diff --git a/go.mod b/go.mod index 5fc1db5..b69800f 100644 --- a/go.mod +++ b/go.mod @@ -6,24 +6,19 @@ require ( github.com/alecthomas/repr v0.0.0-20181024024818-d37bc2a10ba1 // indirect github.com/alecthomas/template v0.0.0-20160405071501-a0175ee3bccc // indirect github.com/alecthomas/units v0.0.0-20151022065526-2efee857e7cf // indirect - github.com/beorn7/perks v0.0.0-20160804104726-4c0e84591b9a // indirect github.com/davecgh/go-spew v1.1.1 // indirect github.com/howeyc/fsnotify v0.0.0-20151003194602-f0c08ee9c607 github.com/kr/pretty v0.1.0 // indirect github.com/mattn/go-isatty v0.0.4 // indirect - github.com/matttproud/golang_protobuf_extensions v1.0.0 // indirect github.com/onsi/ginkgo v1.7.0 // indirect github.com/onsi/gomega v1.4.3 // indirect github.com/pmezard/go-difflib v1.0.0 // indirect - github.com/prometheus/client_golang v0.8.0 - github.com/prometheus/client_model v0.0.0-20170216185247-6f3806018612 // indirect - github.com/prometheus/common v0.0.0-20170731114204-61f87aac8082 - github.com/prometheus/procfs v0.0.0-20170703101242-e645f4e5aaa8 // indirect + github.com/prometheus/client_golang v0.9.2 + github.com/prometheus/common v0.0.0-20181126121408-4724e9255275 github.com/sergi/go-diff v1.0.0 // indirect github.com/sirupsen/logrus v1.0.3 // indirect github.com/stretchr/testify v1.2.2 // indirect golang.org/x/crypto v0.0.0-20170825220121-81e90905daef // indirect - golang.org/x/sync v0.0.0-20181108010431-42b317875d0f // indirect gopkg.in/airbrake/gobrake.v2 v2.0.9 // indirect gopkg.in/alecthomas/kingpin.v2 v2.2.5 gopkg.in/check.v1 v1.0.0-20180628173108-788fd7840127 // indirect diff --git a/go.sum b/go.sum index 7821b5d..13db39e 100644 --- a/go.sum +++ b/go.sum @@ -8,8 +8,8 @@ github.com/alecthomas/template v0.0.0-20160405071501-a0175ee3bccc h1:cAKDfWh5Vpd github.com/alecthomas/template v0.0.0-20160405071501-a0175ee3bccc/go.mod h1:LOuyumcjzFXgccqObfd/Ljyb9UuFJ6TxHnclSeseNhc= github.com/alecthomas/units v0.0.0-20151022065526-2efee857e7cf h1:qet1QNfXsQxTZqLG4oE62mJzwPIB8+Tee4RNCL9ulrY= github.com/alecthomas/units v0.0.0-20151022065526-2efee857e7cf/go.mod h1:ybxpYRFXyAe+OPACYpWeL0wqObRcbAqCMya13uyzqw0= -github.com/beorn7/perks v0.0.0-20160804104726-4c0e84591b9a h1:BtpsbiV638WQZwhA98cEZw2BsbnQJrbd0BI7tsy0W1c= -github.com/beorn7/perks v0.0.0-20160804104726-4c0e84591b9a/go.mod h1:Dwedo/Wpr24TaqPxmxbtue+5NUziq4I4S80YR8gNf3Q= +github.com/beorn7/perks v0.0.0-20180321164747-3a771d992973 h1:xJ4a3vCFaGF/jqvzLMYoU8P317H5OQ+Via4RmuPwCS0= +github.com/beorn7/perks v0.0.0-20180321164747-3a771d992973/go.mod h1:Dwedo/Wpr24TaqPxmxbtue+5NUziq4I4S80YR8gNf3Q= github.com/davecgh/go-spew v1.1.1 h1:vj9j/u1bqnvCEfJOwUhtlOARqs3+rkHYY13jYWTU97c= github.com/davecgh/go-spew v1.1.1/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38= github.com/fsnotify/fsnotify v1.4.7 h1:IXs+QLmnXW2CcXuY+8Mzv/fWEsPGWxqefPtCP5CnV9I= @@ -27,8 +27,8 @@ github.com/kr/text v0.1.0 h1:45sCR5RtlFHMR4UwH9sdQ5TC8v0qDQCHnXt+kaKSTVE= github.com/kr/text v0.1.0/go.mod h1:4Jbv+DJW3UT/LiOwJeYQe1efqtUx/iVham/4vfdArNI= github.com/mattn/go-isatty v0.0.4 h1:bnP0vzxcAdeI1zdubAl5PjU6zsERjGZb7raWodagDYs= github.com/mattn/go-isatty v0.0.4/go.mod h1:M+lRXTBqGeGNdLjl/ufCoiOlB5xdOkqRJdNxMWT7Zi4= -github.com/matttproud/golang_protobuf_extensions v1.0.0 h1:YNOwxxSJzSUARoD9KRZLzM9Y858MNGCOACTvCW9TSAc= -github.com/matttproud/golang_protobuf_extensions v1.0.0/go.mod h1:D8He9yQNgCq6Z5Ld7szi9bcBfOoFv/3dc6xSMkL2PC0= +github.com/matttproud/golang_protobuf_extensions v1.0.1 h1:4hp9jkHxhMHkqkrB3Ix0jegS5sx/RkqARlsWZ6pIwiU= +github.com/matttproud/golang_protobuf_extensions v1.0.1/go.mod h1:D8He9yQNgCq6Z5Ld7szi9bcBfOoFv/3dc6xSMkL2PC0= github.com/onsi/ginkgo v1.6.0/go.mod h1:lLunBs/Ym6LB5Z9jYTR76FiuTmxDTDusOGeTQH+WWjE= github.com/onsi/ginkgo v1.7.0 h1:WSHQ+IS43OoUrWtD1/bbclrwK8TTH5hzp+umCiuxHgs= github.com/onsi/ginkgo v1.7.0/go.mod h1:lLunBs/Ym6LB5Z9jYTR76FiuTmxDTDusOGeTQH+WWjE= @@ -36,14 +36,14 @@ github.com/onsi/gomega v1.4.3 h1:RE1xgDvH7imwFD45h+u2SgIfERHlS2yNG4DObb5BSKU= github.com/onsi/gomega v1.4.3/go.mod h1:ex+gbHU/CVuBBDIJjb2X0qEXbFg53c61hWP/1CpauHY= github.com/pmezard/go-difflib v1.0.0 h1:4DBwDE0NGyQoBHbLQYPwSUPoCMWR5BEzIk/f1lZbAQM= github.com/pmezard/go-difflib v1.0.0/go.mod h1:iKH77koFhYxTK1pcRnkKkqfTogsbg7gZNVY4sRDYZ/4= -github.com/prometheus/client_golang v0.8.0 h1:1921Yw9Gc3iSc4VQh3PIoOqgPCZS7G/4xQNVUp8Mda8= -github.com/prometheus/client_golang v0.8.0/go.mod h1:7SWBe2y4D6OKWSNQJUaRYU/AaXPKyh/dDVn+NZz0KFw= -github.com/prometheus/client_model v0.0.0-20170216185247-6f3806018612 h1:13pIdM2tpaDi4OVe24fgoIS7ZTqMt0QI+bwQsX5hq+g= -github.com/prometheus/client_model v0.0.0-20170216185247-6f3806018612/go.mod h1:MbSGuTsp3dbXC40dX6PRTWyKYBIrTGTE9sqQNg2J8bo= -github.com/prometheus/common v0.0.0-20170731114204-61f87aac8082 h1:M/45ksQhBkhxI65UXRNvyuF6sV7A08GMYk39aGZQlJQ= -github.com/prometheus/common v0.0.0-20170731114204-61f87aac8082/go.mod h1:daVV7qP5qjZbuso7PdcryaAu0sAZbrN9i7WWcTMWvro= -github.com/prometheus/procfs v0.0.0-20170703101242-e645f4e5aaa8 h1:uZfczEBIA1FZfOQo4/JWgGnMNd/4HVsM9A+B30wtlkA= -github.com/prometheus/procfs v0.0.0-20170703101242-e645f4e5aaa8/go.mod h1:c3At6R/oaqEKCNdg8wHV1ftS6bRYblBhIjjI8uT2IGk= +github.com/prometheus/client_golang v0.9.2 h1:awm861/B8OKDd2I/6o1dy3ra4BamzKhYOiGItCeZ740= +github.com/prometheus/client_golang v0.9.2/go.mod h1:OsXs2jCmiKlQ1lTBmv21f2mNfw4xf/QclQDMrYNZzcM= +github.com/prometheus/client_model v0.0.0-20180712105110-5c3871d89910 h1:idejC8f05m9MGOsuEi1ATq9shN03HrxNkD/luQvxCv8= +github.com/prometheus/client_model v0.0.0-20180712105110-5c3871d89910/go.mod h1:MbSGuTsp3dbXC40dX6PRTWyKYBIrTGTE9sqQNg2J8bo= +github.com/prometheus/common v0.0.0-20181126121408-4724e9255275 h1:PnBWHBf+6L0jOqq0gIVUe6Yk0/QMZ640k6NvkxcBf+8= +github.com/prometheus/common v0.0.0-20181126121408-4724e9255275/go.mod h1:daVV7qP5qjZbuso7PdcryaAu0sAZbrN9i7WWcTMWvro= +github.com/prometheus/procfs v0.0.0-20181204211112-1dc9a6cbc91a h1:9a8MnZMP0X2nLJdBg+pBmGgkJlSaKC2KaQmTCk1XDtE= +github.com/prometheus/procfs v0.0.0-20181204211112-1dc9a6cbc91a/go.mod h1:c3At6R/oaqEKCNdg8wHV1ftS6bRYblBhIjjI8uT2IGk= github.com/sergi/go-diff v1.0.0 h1:Kpca3qRNrduNnOQeazBd0ysaKrUJiIuISHxogkT9RPQ= github.com/sergi/go-diff v1.0.0/go.mod h1:0CfEIISq7TuYL3j771MWULgwwjU+GofnZX9QAmXWZgo= github.com/sirupsen/logrus v1.0.3 h1:B5C/igNWoiULof20pKfY4VntcIPqKuwEmoLZrabbUrc= @@ -54,6 +54,8 @@ golang.org/x/crypto v0.0.0-20170825220121-81e90905daef h1:R8ubLIilYRXIXpgjOg2l/E golang.org/x/crypto v0.0.0-20170825220121-81e90905daef/go.mod h1:6SG95UA2DQfeDnfUPMdvaQW0Q7yPrPDi9nlGo2tz2b4= golang.org/x/net v0.0.0-20180906233101-161cd47e91fd h1:nTDtHvHSdCn1m6ITfMRqtOd/9+7a3s8RBNOZ3eYZzJA= golang.org/x/net v0.0.0-20180906233101-161cd47e91fd/go.mod h1:mL1N/T3taQHkDXs73rZJwtUhF3w3ftmwwsq0BUmARs4= +golang.org/x/net v0.0.0-20181201002055-351d144fa1fc h1:a3CU5tJYVj92DY2LaA1kUkrsqD5/3mLDhx2NcNqyW+0= +golang.org/x/net v0.0.0-20181201002055-351d144fa1fc/go.mod h1:mL1N/T3taQHkDXs73rZJwtUhF3w3ftmwwsq0BUmARs4= golang.org/x/sync v0.0.0-20180314180146-1d60e4601c6f/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM= golang.org/x/sync v0.0.0-20181108010431-42b317875d0f h1:Bl/8QSvNqXvPGPGXa2z5xUTmV7VDcZyvRZ+QQXkXTZQ= golang.org/x/sync v0.0.0-20181108010431-42b317875d0f/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM= diff --git a/vendor/github.com/beorn7/perks/quantile/stream.go b/vendor/github.com/beorn7/perks/quantile/stream.go index f4cabd6..d7d14f8 100644 --- a/vendor/github.com/beorn7/perks/quantile/stream.go +++ b/vendor/github.com/beorn7/perks/quantile/stream.go @@ -77,15 +77,20 @@ func NewHighBiased(epsilon float64) *Stream { // is guaranteed to be within (Quantile±Epsilon). // // See http://www.cs.rutgers.edu/~muthu/bquant.pdf for time, space, and error properties. -func NewTargeted(targets map[float64]float64) *Stream { +func NewTargeted(targetMap map[float64]float64) *Stream { + // Convert map to slice to avoid slow iterations on a map. + // ƒ is called on the hot path, so converting the map to a slice + // beforehand results in significant CPU savings. + targets := targetMapToSlice(targetMap) + ƒ := func(s *stream, r float64) float64 { var m = math.MaxFloat64 var f float64 - for quantile, epsilon := range targets { - if quantile*s.n <= r { - f = (2 * epsilon * r) / quantile + for _, t := range targets { + if t.quantile*s.n <= r { + f = (2 * t.epsilon * r) / t.quantile } else { - f = (2 * epsilon * (s.n - r)) / (1 - quantile) + f = (2 * t.epsilon * (s.n - r)) / (1 - t.quantile) } if f < m { m = f @@ -96,6 +101,25 @@ func NewTargeted(targets map[float64]float64) *Stream { return newStream(ƒ) } +type target struct { + quantile float64 + epsilon float64 +} + +func targetMapToSlice(targetMap map[float64]float64) []target { + targets := make([]target, 0, len(targetMap)) + + for quantile, epsilon := range targetMap { + t := target{ + quantile: quantile, + epsilon: epsilon, + } + targets = append(targets, t) + } + + return targets +} + // Stream computes quantiles for a stream of float64s. It is not thread-safe by // design. Take care when using across multiple goroutines. type Stream struct { diff --git a/vendor/github.com/matttproud/golang_protobuf_extensions/pbutil/.gitignore b/vendor/github.com/matttproud/golang_protobuf_extensions/pbutil/.gitignore new file mode 100644 index 0000000..e16fb94 --- /dev/null +++ b/vendor/github.com/matttproud/golang_protobuf_extensions/pbutil/.gitignore @@ -0,0 +1 @@ +cover.dat diff --git a/vendor/github.com/matttproud/golang_protobuf_extensions/pbutil/Makefile b/vendor/github.com/matttproud/golang_protobuf_extensions/pbutil/Makefile new file mode 100644 index 0000000..81be214 --- /dev/null +++ b/vendor/github.com/matttproud/golang_protobuf_extensions/pbutil/Makefile @@ -0,0 +1,7 @@ +all: + +cover: + go test -cover -v -coverprofile=cover.dat ./... + go tool cover -func cover.dat + +.PHONY: cover diff --git a/vendor/github.com/prometheus/client_golang/AUTHORS.md b/vendor/github.com/prometheus/client_golang/AUTHORS.md deleted file mode 100644 index c5275d5..0000000 --- a/vendor/github.com/prometheus/client_golang/AUTHORS.md +++ /dev/null @@ -1,18 +0,0 @@ -The Prometheus project was started by Matt T. Proud (emeritus) and -Julius Volz in 2012. - -Maintainers of this repository: - -* Björn Rabenstein - -The following individuals have contributed code to this repository -(listed in alphabetical order): - -* Bernerd Schaefer -* Björn Rabenstein -* Daniel Bornkessel -* Jeff Younker -* Julius Volz -* Matt T. Proud -* Tobias Schmidt - diff --git a/vendor/github.com/prometheus/client_golang/prometheus/collector.go b/vendor/github.com/prometheus/client_golang/prometheus/collector.go index 623d3d8..c0d70b2 100644 --- a/vendor/github.com/prometheus/client_golang/prometheus/collector.go +++ b/vendor/github.com/prometheus/client_golang/prometheus/collector.go @@ -29,27 +29,72 @@ type Collector interface { // collected by this Collector to the provided channel and returns once // the last descriptor has been sent. The sent descriptors fulfill the // consistency and uniqueness requirements described in the Desc - // documentation. (It is valid if one and the same Collector sends - // duplicate descriptors. Those duplicates are simply ignored. However, - // two different Collectors must not send duplicate descriptors.) This - // method idempotently sends the same descriptors throughout the - // lifetime of the Collector. If a Collector encounters an error while - // executing this method, it must send an invalid descriptor (created - // with NewInvalidDesc) to signal the error to the registry. + // documentation. + // + // It is valid if one and the same Collector sends duplicate + // descriptors. Those duplicates are simply ignored. However, two + // different Collectors must not send duplicate descriptors. + // + // Sending no descriptor at all marks the Collector as “unchecked”, + // i.e. no checks will be performed at registration time, and the + // Collector may yield any Metric it sees fit in its Collect method. + // + // This method idempotently sends the same descriptors throughout the + // lifetime of the Collector. It may be called concurrently and + // therefore must be implemented in a concurrency safe way. + // + // If a Collector encounters an error while executing this method, it + // must send an invalid descriptor (created with NewInvalidDesc) to + // signal the error to the registry. Describe(chan<- *Desc) // Collect is called by the Prometheus registry when collecting // metrics. The implementation sends each collected metric via the // provided channel and returns once the last metric has been sent. The - // descriptor of each sent metric is one of those returned by - // Describe. Returned metrics that share the same descriptor must differ - // in their variable label values. This method may be called - // concurrently and must therefore be implemented in a concurrency safe - // way. Blocking occurs at the expense of total performance of rendering - // all registered metrics. Ideally, Collector implementations support - // concurrent readers. + // descriptor of each sent metric is one of those returned by Describe + // (unless the Collector is unchecked, see above). Returned metrics that + // share the same descriptor must differ in their variable label + // values. + // + // This method may be called concurrently and must therefore be + // implemented in a concurrency safe way. Blocking occurs at the expense + // of total performance of rendering all registered metrics. Ideally, + // Collector implementations support concurrent readers. Collect(chan<- Metric) } +// DescribeByCollect is a helper to implement the Describe method of a custom +// Collector. It collects the metrics from the provided Collector and sends +// their descriptors to the provided channel. +// +// If a Collector collects the same metrics throughout its lifetime, its +// Describe method can simply be implemented as: +// +// func (c customCollector) Describe(ch chan<- *Desc) { +// DescribeByCollect(c, ch) +// } +// +// However, this will not work if the metrics collected change dynamically over +// the lifetime of the Collector in a way that their combined set of descriptors +// changes as well. The shortcut implementation will then violate the contract +// of the Describe method. If a Collector sometimes collects no metrics at all +// (for example vectors like CounterVec, GaugeVec, etc., which only collect +// metrics after a metric with a fully specified label set has been accessed), +// it might even get registered as an unchecked Collecter (cf. the Register +// method of the Registerer interface). Hence, only use this shortcut +// implementation of Describe if you are certain to fulfill the contract. +// +// The Collector example demonstrates a use of DescribeByCollect. +func DescribeByCollect(c Collector, descs chan<- *Desc) { + metrics := make(chan Metric) + go func() { + c.Collect(metrics) + close(metrics) + }() + for m := range metrics { + descs <- m.Desc() + } +} + // selfCollector implements Collector for a single Metric so that the Metric // collects itself. Add it as an anonymous field to a struct that implements // Metric, and call init with the Metric itself as an argument. diff --git a/vendor/github.com/prometheus/client_golang/prometheus/counter.go b/vendor/github.com/prometheus/client_golang/prometheus/counter.go index ee37949..d463e36 100644 --- a/vendor/github.com/prometheus/client_golang/prometheus/counter.go +++ b/vendor/github.com/prometheus/client_golang/prometheus/counter.go @@ -15,6 +15,10 @@ package prometheus import ( "errors" + "math" + "sync/atomic" + + dto "github.com/prometheus/client_model/go" ) // Counter is a Metric that represents a single numerical value that only ever @@ -30,16 +34,8 @@ type Counter interface { Metric Collector - // Set is used to set the Counter to an arbitrary value. It is only used - // if you have to transfer a value from an external counter into this - // Prometheus metric. Do not use it for regular handling of a - // Prometheus counter (as it can be used to break the contract of - // monotonically increasing values). - // - // Deprecated: Use NewConstMetric to create a counter for an external - // value. A Counter should never be set. - Set(float64) - // Inc increments the counter by 1. + // Inc increments the counter by 1. Use Add to increment it by arbitrary + // non-negative values. Inc() // Add adds the given value to the counter. It panics if the value is < // 0. @@ -50,6 +46,14 @@ type Counter interface { type CounterOpts Opts // NewCounter creates a new Counter based on the provided CounterOpts. +// +// The returned implementation tracks the counter value in two separate +// variables, a float64 and a uint64. The latter is used to track calls of the +// Inc method and calls of the Add method with a value that can be represented +// as a uint64. This allows atomic increments of the counter with optimal +// performance. (It is common to have an Inc call in very hot execution paths.) +// Both internal tracking values are added up in the Write method. This has to +// be taken into account when it comes to precision and overflow behavior. func NewCounter(opts CounterOpts) Counter { desc := NewDesc( BuildFQName(opts.Namespace, opts.Subsystem, opts.Name), @@ -57,20 +61,58 @@ func NewCounter(opts CounterOpts) Counter { nil, opts.ConstLabels, ) - result := &counter{value: value{desc: desc, valType: CounterValue, labelPairs: desc.constLabelPairs}} + result := &counter{desc: desc, labelPairs: desc.constLabelPairs} result.init(result) // Init self-collection. return result } type counter struct { - value + // valBits contains the bits of the represented float64 value, while + // valInt stores values that are exact integers. Both have to go first + // in the struct to guarantee alignment for atomic operations. + // http://golang.org/pkg/sync/atomic/#pkg-note-BUG + valBits uint64 + valInt uint64 + + selfCollector + desc *Desc + + labelPairs []*dto.LabelPair +} + +func (c *counter) Desc() *Desc { + return c.desc } func (c *counter) Add(v float64) { if v < 0 { panic(errors.New("counter cannot decrease in value")) } - c.value.Add(v) + ival := uint64(v) + if float64(ival) == v { + atomic.AddUint64(&c.valInt, ival) + return + } + + for { + oldBits := atomic.LoadUint64(&c.valBits) + newBits := math.Float64bits(math.Float64frombits(oldBits) + v) + if atomic.CompareAndSwapUint64(&c.valBits, oldBits, newBits) { + return + } + } +} + +func (c *counter) Inc() { + atomic.AddUint64(&c.valInt, 1) +} + +func (c *counter) Write(out *dto.Metric) error { + fval := math.Float64frombits(atomic.LoadUint64(&c.valBits)) + ival := atomic.LoadUint64(&c.valInt) + val := fval + float64(ival) + + return populateMetric(CounterValue, val, c.labelPairs, out) } // CounterVec is a Collector that bundles a set of Counters that all share the @@ -78,16 +120,12 @@ func (c *counter) Add(v float64) { // if you want to count the same thing partitioned by various dimensions // (e.g. number of HTTP requests, partitioned by response code and // method). Create instances with NewCounterVec. -// -// CounterVec embeds MetricVec. See there for a full list of methods with -// detailed documentation. type CounterVec struct { - *MetricVec + *metricVec } // NewCounterVec creates a new CounterVec based on the provided CounterOpts and -// partitioned by the given label names. At least one label name must be -// provided. +// partitioned by the given label names. func NewCounterVec(opts CounterOpts, labelNames []string) *CounterVec { desc := NewDesc( BuildFQName(opts.Namespace, opts.Subsystem, opts.Name), @@ -96,34 +134,62 @@ func NewCounterVec(opts CounterOpts, labelNames []string) *CounterVec { opts.ConstLabels, ) return &CounterVec{ - MetricVec: newMetricVec(desc, func(lvs ...string) Metric { - result := &counter{value: value{ - desc: desc, - valType: CounterValue, - labelPairs: makeLabelPairs(desc, lvs), - }} + metricVec: newMetricVec(desc, func(lvs ...string) Metric { + if len(lvs) != len(desc.variableLabels) { + panic(makeInconsistentCardinalityError(desc.fqName, desc.variableLabels, lvs)) + } + result := &counter{desc: desc, labelPairs: makeLabelPairs(desc, lvs)} result.init(result) // Init self-collection. return result }), } } -// GetMetricWithLabelValues replaces the method of the same name in -// MetricVec. The difference is that this method returns a Counter and not a -// Metric so that no type conversion is required. -func (m *CounterVec) GetMetricWithLabelValues(lvs ...string) (Counter, error) { - metric, err := m.MetricVec.GetMetricWithLabelValues(lvs...) +// GetMetricWithLabelValues returns the Counter for the given slice of label +// values (same order as the VariableLabels in Desc). If that combination of +// label values is accessed for the first time, a new Counter is created. +// +// It is possible to call this method without using the returned Counter to only +// create the new Counter but leave it at its starting value 0. See also the +// SummaryVec example. +// +// Keeping the Counter for later use is possible (and should be considered if +// performance is critical), but keep in mind that Reset, DeleteLabelValues and +// Delete can be used to delete the Counter from the CounterVec. In that case, +// the Counter will still exist, but it will not be exported anymore, even if a +// Counter with the same label values is created later. +// +// An error is returned if the number of label values is not the same as the +// number of VariableLabels in Desc (minus any curried labels). +// +// Note that for more than one label value, this method is prone to mistakes +// caused by an incorrect order of arguments. Consider GetMetricWith(Labels) as +// an alternative to avoid that type of mistake. For higher label numbers, the +// latter has a much more readable (albeit more verbose) syntax, but it comes +// with a performance overhead (for creating and processing the Labels map). +// See also the GaugeVec example. +func (v *CounterVec) GetMetricWithLabelValues(lvs ...string) (Counter, error) { + metric, err := v.metricVec.getMetricWithLabelValues(lvs...) if metric != nil { return metric.(Counter), err } return nil, err } -// GetMetricWith replaces the method of the same name in MetricVec. The -// difference is that this method returns a Counter and not a Metric so that no -// type conversion is required. -func (m *CounterVec) GetMetricWith(labels Labels) (Counter, error) { - metric, err := m.MetricVec.GetMetricWith(labels) +// GetMetricWith returns the Counter for the given Labels map (the label names +// must match those of the VariableLabels in Desc). If that label map is +// accessed for the first time, a new Counter is created. Implications of +// creating a Counter without using it and keeping the Counter for later use are +// the same as for GetMetricWithLabelValues. +// +// An error is returned if the number and names of the Labels are inconsistent +// with those of the VariableLabels in Desc (minus any curried labels). +// +// This method is used for the same purpose as +// GetMetricWithLabelValues(...string). See there for pros and cons of the two +// methods. +func (v *CounterVec) GetMetricWith(labels Labels) (Counter, error) { + metric, err := v.metricVec.getMetricWith(labels) if metric != nil { return metric.(Counter), err } @@ -131,18 +197,57 @@ func (m *CounterVec) GetMetricWith(labels Labels) (Counter, error) { } // WithLabelValues works as GetMetricWithLabelValues, but panics where -// GetMetricWithLabelValues would have returned an error. By not returning an -// error, WithLabelValues allows shortcuts like +// GetMetricWithLabelValues would have returned an error. Not returning an +// error allows shortcuts like // myVec.WithLabelValues("404", "GET").Add(42) -func (m *CounterVec) WithLabelValues(lvs ...string) Counter { - return m.MetricVec.WithLabelValues(lvs...).(Counter) +func (v *CounterVec) WithLabelValues(lvs ...string) Counter { + c, err := v.GetMetricWithLabelValues(lvs...) + if err != nil { + panic(err) + } + return c } // With works as GetMetricWith, but panics where GetMetricWithLabels would have -// returned an error. By not returning an error, With allows shortcuts like -// myVec.With(Labels{"code": "404", "method": "GET"}).Add(42) -func (m *CounterVec) With(labels Labels) Counter { - return m.MetricVec.With(labels).(Counter) +// returned an error. Not returning an error allows shortcuts like +// myVec.With(prometheus.Labels{"code": "404", "method": "GET"}).Add(42) +func (v *CounterVec) With(labels Labels) Counter { + c, err := v.GetMetricWith(labels) + if err != nil { + panic(err) + } + return c +} + +// CurryWith returns a vector curried with the provided labels, i.e. the +// returned vector has those labels pre-set for all labeled operations performed +// on it. The cardinality of the curried vector is reduced accordingly. The +// order of the remaining labels stays the same (just with the curried labels +// taken out of the sequence – which is relevant for the +// (GetMetric)WithLabelValues methods). It is possible to curry a curried +// vector, but only with labels not yet used for currying before. +// +// The metrics contained in the CounterVec are shared between the curried and +// uncurried vectors. They are just accessed differently. Curried and uncurried +// vectors behave identically in terms of collection. Only one must be +// registered with a given registry (usually the uncurried version). The Reset +// method deletes all metrics, even if called on a curried vector. +func (v *CounterVec) CurryWith(labels Labels) (*CounterVec, error) { + vec, err := v.curryWith(labels) + if vec != nil { + return &CounterVec{vec}, err + } + return nil, err +} + +// MustCurryWith works as CurryWith but panics where CurryWith would have +// returned an error. +func (v *CounterVec) MustCurryWith(labels Labels) *CounterVec { + vec, err := v.CurryWith(labels) + if err != nil { + panic(err) + } + return vec } // CounterFunc is a Counter whose value is determined at collect time by calling a diff --git a/vendor/github.com/prometheus/client_golang/prometheus/desc.go b/vendor/github.com/prometheus/client_golang/prometheus/desc.go index 77f4b30..1d034f8 100644 --- a/vendor/github.com/prometheus/client_golang/prometheus/desc.go +++ b/vendor/github.com/prometheus/client_golang/prometheus/desc.go @@ -16,33 +16,15 @@ package prometheus import ( "errors" "fmt" - "regexp" "sort" "strings" "github.com/golang/protobuf/proto" + "github.com/prometheus/common/model" dto "github.com/prometheus/client_model/go" ) -var ( - metricNameRE = regexp.MustCompile(`^[a-zA-Z_][a-zA-Z0-9_:]*$`) - labelNameRE = regexp.MustCompile("^[a-zA-Z_][a-zA-Z0-9_]*$") -) - -// reservedLabelPrefix is a prefix which is not legal in user-supplied -// label names. -const reservedLabelPrefix = "__" - -// Labels represents a collection of label name -> value mappings. This type is -// commonly used with the With(Labels) and GetMetricWith(Labels) methods of -// metric vector Collectors, e.g.: -// myVec.With(Labels{"code": "404", "method": "GET"}).Add(42) -// -// The other use-case is the specification of constant label pairs in Opts or to -// create a Desc. -type Labels map[string]string - // Desc is the descriptor used by every Prometheus Metric. It is essentially // the immutable meta-data of a Metric. The normal Metric implementations // included in this package manage their Desc under the hood. Users only have to @@ -78,32 +60,27 @@ type Desc struct { // Help string. Each Desc with the same fqName must have the same // dimHash. dimHash uint64 - // err is an error that occured during construction. It is reported on + // err is an error that occurred during construction. It is reported on // registration time. err error } // NewDesc allocates and initializes a new Desc. Errors are recorded in the Desc // and will be reported on registration time. variableLabels and constLabels can -// be nil if no such labels should be set. fqName and help must not be empty. +// be nil if no such labels should be set. fqName must not be empty. // // variableLabels only contain the label names. Their label values are variable // and therefore not part of the Desc. (They are managed within the Metric.) // // For constLabels, the label values are constant. Therefore, they are fully -// specified in the Desc. See the Opts documentation for the implications of -// constant labels. +// specified in the Desc. See the Collector example for a usage pattern. func NewDesc(fqName, help string, variableLabels []string, constLabels Labels) *Desc { d := &Desc{ fqName: fqName, help: help, variableLabels: variableLabels, } - if help == "" { - d.err = errors.New("empty help string") - return d - } - if !metricNameRE.MatchString(fqName) { + if !model.IsValidMetricName(model.LabelValue(fqName)) { d.err = fmt.Errorf("%q is not a valid metric name", fqName) return d } @@ -116,7 +93,7 @@ func NewDesc(fqName, help string, variableLabels []string, constLabels Labels) * // First add only the const label names and sort them... for labelName := range constLabels { if !checkLabelName(labelName) { - d.err = fmt.Errorf("%q is not a valid label name", labelName) + d.err = fmt.Errorf("%q is not a valid label name for metric %q", labelName, fqName) return d } labelNames = append(labelNames, labelName) @@ -127,12 +104,18 @@ func NewDesc(fqName, help string, variableLabels []string, constLabels Labels) * for _, labelName := range labelNames { labelValues = append(labelValues, constLabels[labelName]) } + // Validate the const label values. They can't have a wrong cardinality, so + // use in len(labelValues) as expectedNumberOfValues. + if err := validateLabelValues(labelValues, len(labelValues)); err != nil { + d.err = err + return d + } // Now add the variable label names, but prefix them with something that // cannot be in a regular label name. That prevents matching the label // dimension with a different mix between preset and variable labels. for _, labelName := range variableLabels { if !checkLabelName(labelName) { - d.err = fmt.Errorf("%q is not a valid label name", labelName) + d.err = fmt.Errorf("%q is not a valid label name for metric %q", labelName, fqName) return d } labelNames = append(labelNames, "$"+labelName) @@ -142,6 +125,7 @@ func NewDesc(fqName, help string, variableLabels []string, constLabels Labels) * d.err = errors.New("duplicate label names") return d } + vh := hashNew() for _, val := range labelValues { vh = hashAdd(vh, val) @@ -168,7 +152,7 @@ func NewDesc(fqName, help string, variableLabels []string, constLabels Labels) * Value: proto.String(v), }) } - sort.Sort(LabelPairSorter(d.constLabelPairs)) + sort.Sort(labelPairSorter(d.constLabelPairs)) return d } @@ -198,8 +182,3 @@ func (d *Desc) String() string { d.variableLabels, ) } - -func checkLabelName(l string) bool { - return labelNameRE.MatchString(l) && - !strings.HasPrefix(l, reservedLabelPrefix) -} diff --git a/vendor/github.com/prometheus/client_golang/prometheus/doc.go b/vendor/github.com/prometheus/client_golang/prometheus/doc.go index b15a2d3..5d9525d 100644 --- a/vendor/github.com/prometheus/client_golang/prometheus/doc.go +++ b/vendor/github.com/prometheus/client_golang/prometheus/doc.go @@ -11,13 +11,15 @@ // See the License for the specific language governing permissions and // limitations under the License. -// Package prometheus provides metrics primitives to instrument code for -// monitoring. It also offers a registry for metrics. Sub-packages allow to -// expose the registered metrics via HTTP (package promhttp) or push them to a -// Pushgateway (package push). +// Package prometheus is the core instrumentation package. It provides metrics +// primitives to instrument code for monitoring. It also offers a registry for +// metrics. Sub-packages allow to expose the registered metrics via HTTP +// (package promhttp) or push them to a Pushgateway (package push). There is +// also a sub-package promauto, which provides metrics constructors with +// automatic registration. // // All exported functions and methods are safe to be used concurrently unless -//specified otherwise. +// specified otherwise. // // A Basic Example // @@ -26,6 +28,7 @@ // package main // // import ( +// "log" // "net/http" // // "github.com/prometheus/client_golang/prometheus" @@ -59,7 +62,7 @@ // // The Handler function provides a default handler to expose metrics // // via an HTTP server. "/metrics" is the usual endpoint for that. // http.Handle("/metrics", promhttp.Handler()) -// http.ListenAndServe(":8080", nil) +// log.Fatal(http.ListenAndServe(":8080", nil)) // } // // @@ -69,9 +72,12 @@ // Metrics // // The number of exported identifiers in this package might appear a bit -// overwhelming. Hovever, in addition to the basic plumbing shown in the example +// overwhelming. However, in addition to the basic plumbing shown in the example // above, you only need to understand the different metric types and their -// vector versions for basic usage. +// vector versions for basic usage. Furthermore, if you are not concerned with +// fine-grained control of when and how to register metrics with the registry, +// have a look at the promauto package, which will effectively allow you to +// ignore registration altogether in simple cases. // // Above, you have already touched the Counter and the Gauge. There are two more // advanced metric types: the Summary and Histogram. A more thorough description @@ -95,8 +101,8 @@ // SummaryVec, HistogramVec, and UntypedVec are not. // // To create instances of Metrics and their vector versions, you need a suitable -// …Opts struct, i.e. GaugeOpts, CounterOpts, SummaryOpts, -// HistogramOpts, or UntypedOpts. +// …Opts struct, i.e. GaugeOpts, CounterOpts, SummaryOpts, HistogramOpts, or +// UntypedOpts. // // Custom Collectors and constant Metrics // @@ -114,8 +120,18 @@ // Metric instances “on the fly” using NewConstMetric, NewConstHistogram, and // NewConstSummary (and their respective Must… versions). That will happen in // the Collect method. The Describe method has to return separate Desc -// instances, representative of the “throw-away” metrics to be created -// later. NewDesc comes in handy to create those Desc instances. +// instances, representative of the “throw-away” metrics to be created later. +// NewDesc comes in handy to create those Desc instances. Alternatively, you +// could return no Desc at all, which will marke the Collector “unchecked”. No +// checks are porformed at registration time, but metric consistency will still +// be ensured at scrape time, i.e. any inconsistencies will lead to scrape +// errors. Thus, with unchecked Collectors, the responsibility to not collect +// metrics that lead to inconsistencies in the total scrape result lies with the +// implementer of the Collector. While this is not a desirable state, it is +// sometimes necessary. The typical use case is a situatios where the exact +// metrics to be returned by a Collector cannot be predicted at registration +// time, but the implementer has sufficient knowledge of the whole system to +// guarantee metric consistency. // // The Collector example illustrates the use case. You can also look at the // source code of the processCollector (mirroring process metrics), the @@ -129,34 +145,34 @@ // Advanced Uses of the Registry // // While MustRegister is the by far most common way of registering a Collector, -// sometimes you might want to handle the errors the registration might -// cause. As suggested by the name, MustRegister panics if an error occurs. With -// the Register function, the error is returned and can be handled. +// sometimes you might want to handle the errors the registration might cause. +// As suggested by the name, MustRegister panics if an error occurs. With the +// Register function, the error is returned and can be handled. // // An error is returned if the registered Collector is incompatible or // inconsistent with already registered metrics. The registry aims for -// consistency of the collected metrics according to the Prometheus data -// model. Inconsistencies are ideally detected at registration time, not at -// collect time. The former will usually be detected at start-up time of a -// program, while the latter will only happen at scrape time, possibly not even -// on the first scrape if the inconsistency only becomes relevant later. That is -// the main reason why a Collector and a Metric have to describe themselves to -// the registry. +// consistency of the collected metrics according to the Prometheus data model. +// Inconsistencies are ideally detected at registration time, not at collect +// time. The former will usually be detected at start-up time of a program, +// while the latter will only happen at scrape time, possibly not even on the +// first scrape if the inconsistency only becomes relevant later. That is the +// main reason why a Collector and a Metric have to describe themselves to the +// registry. // // So far, everything we did operated on the so-called default registry, as it -// can be found in the global DefaultRegistry variable. With NewRegistry, you +// can be found in the global DefaultRegisterer variable. With NewRegistry, you // can create a custom registry, or you can even implement the Registerer or -// Gatherer interfaces yourself. The methods Register and Unregister work in -// the same way on a custom registry as the global functions Register and -// Unregister on the default registry. +// Gatherer interfaces yourself. The methods Register and Unregister work in the +// same way on a custom registry as the global functions Register and Unregister +// on the default registry. // -// There are a number of uses for custom registries: You can use registries -// with special properties, see NewPedanticRegistry. You can avoid global state, -// as it is imposed by the DefaultRegistry. You can use multiple registries at -// the same time to expose different metrics in different ways. You can use +// There are a number of uses for custom registries: You can use registries with +// special properties, see NewPedanticRegistry. You can avoid global state, as +// it is imposed by the DefaultRegisterer. You can use multiple registries at +// the same time to expose different metrics in different ways. You can use // separate registries for testing purposes. // -// Also note that the DefaultRegistry comes registered with a Collector for Go +// Also note that the DefaultRegisterer comes registered with a Collector for Go // runtime metrics (via NewGoCollector) and a Collector for process metrics (via // NewProcessCollector). With a custom registry, you are in control and decide // yourself about the Collectors to register. @@ -166,16 +182,20 @@ // The Registry implements the Gatherer interface. The caller of the Gather // method can then expose the gathered metrics in some way. Usually, the metrics // are served via HTTP on the /metrics endpoint. That's happening in the example -// above. The tools to expose metrics via HTTP are in the promhttp -// sub-package. (The top-level functions in the prometheus package are -// deprecated.) +// above. The tools to expose metrics via HTTP are in the promhttp sub-package. +// (The top-level functions in the prometheus package are deprecated.) // // Pushing to the Pushgateway // // Function for pushing to the Pushgateway can be found in the push sub-package. // +// Graphite Bridge +// +// Functions and examples to push metrics from a Gatherer to Graphite can be +// found in the graphite sub-package. +// // Other Means of Exposition // -// More ways of exposing metrics can easily be added. Sending metrics to -// Graphite would be an example that will soon be implemented. +// More ways of exposing metrics can easily be added by following the approaches +// of the existing implementations. package prometheus diff --git a/vendor/github.com/prometheus/client_golang/prometheus/fnv.go b/vendor/github.com/prometheus/client_golang/prometheus/fnv.go index e3b67df..3d383a7 100644 --- a/vendor/github.com/prometheus/client_golang/prometheus/fnv.go +++ b/vendor/github.com/prometheus/client_golang/prometheus/fnv.go @@ -1,3 +1,16 @@ +// Copyright 2018 The Prometheus Authors +// Licensed under the Apache License, Version 2.0 (the "License"); +// you may not use this file except in compliance with the License. +// You may obtain a copy of the License at +// +// http://www.apache.org/licenses/LICENSE-2.0 +// +// Unless required by applicable law or agreed to in writing, software +// distributed under the License is distributed on an "AS IS" BASIS, +// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. +// See the License for the specific language governing permissions and +// limitations under the License. + package prometheus // Inline and byte-free variant of hash/fnv's fnv64a. diff --git a/vendor/github.com/prometheus/client_golang/prometheus/gauge.go b/vendor/github.com/prometheus/client_golang/prometheus/gauge.go index 8b70e51..71d406b 100644 --- a/vendor/github.com/prometheus/client_golang/prometheus/gauge.go +++ b/vendor/github.com/prometheus/client_golang/prometheus/gauge.go @@ -13,6 +13,14 @@ package prometheus +import ( + "math" + "sync/atomic" + "time" + + dto "github.com/prometheus/client_model/go" +) + // Gauge is a Metric that represents a single numerical value that can // arbitrarily go up and down. // @@ -27,29 +35,95 @@ type Gauge interface { // Set sets the Gauge to an arbitrary value. Set(float64) - // Inc increments the Gauge by 1. + // Inc increments the Gauge by 1. Use Add to increment it by arbitrary + // values. Inc() - // Dec decrements the Gauge by 1. + // Dec decrements the Gauge by 1. Use Sub to decrement it by arbitrary + // values. Dec() - // Add adds the given value to the Gauge. (The value can be - // negative, resulting in a decrease of the Gauge.) + // Add adds the given value to the Gauge. (The value can be negative, + // resulting in a decrease of the Gauge.) Add(float64) // Sub subtracts the given value from the Gauge. (The value can be // negative, resulting in an increase of the Gauge.) Sub(float64) + + // SetToCurrentTime sets the Gauge to the current Unix time in seconds. + SetToCurrentTime() } // GaugeOpts is an alias for Opts. See there for doc comments. type GaugeOpts Opts // NewGauge creates a new Gauge based on the provided GaugeOpts. +// +// The returned implementation is optimized for a fast Set method. If you have a +// choice for managing the value of a Gauge via Set vs. Inc/Dec/Add/Sub, pick +// the former. For example, the Inc method of the returned Gauge is slower than +// the Inc method of a Counter returned by NewCounter. This matches the typical +// scenarios for Gauges and Counters, where the former tends to be Set-heavy and +// the latter Inc-heavy. func NewGauge(opts GaugeOpts) Gauge { - return newValue(NewDesc( + desc := NewDesc( BuildFQName(opts.Namespace, opts.Subsystem, opts.Name), opts.Help, nil, opts.ConstLabels, - ), GaugeValue, 0) + ) + result := &gauge{desc: desc, labelPairs: desc.constLabelPairs} + result.init(result) // Init self-collection. + return result +} + +type gauge struct { + // valBits contains the bits of the represented float64 value. It has + // to go first in the struct to guarantee alignment for atomic + // operations. http://golang.org/pkg/sync/atomic/#pkg-note-BUG + valBits uint64 + + selfCollector + + desc *Desc + labelPairs []*dto.LabelPair +} + +func (g *gauge) Desc() *Desc { + return g.desc +} + +func (g *gauge) Set(val float64) { + atomic.StoreUint64(&g.valBits, math.Float64bits(val)) +} + +func (g *gauge) SetToCurrentTime() { + g.Set(float64(time.Now().UnixNano()) / 1e9) +} + +func (g *gauge) Inc() { + g.Add(1) +} + +func (g *gauge) Dec() { + g.Add(-1) +} + +func (g *gauge) Add(val float64) { + for { + oldBits := atomic.LoadUint64(&g.valBits) + newBits := math.Float64bits(math.Float64frombits(oldBits) + val) + if atomic.CompareAndSwapUint64(&g.valBits, oldBits, newBits) { + return + } + } +} + +func (g *gauge) Sub(val float64) { + g.Add(val * -1) +} + +func (g *gauge) Write(out *dto.Metric) error { + val := math.Float64frombits(atomic.LoadUint64(&g.valBits)) + return populateMetric(GaugeValue, val, g.labelPairs, out) } // GaugeVec is a Collector that bundles a set of Gauges that all share the same @@ -58,12 +132,11 @@ func NewGauge(opts GaugeOpts) Gauge { // (e.g. number of operations queued, partitioned by user and operation // type). Create instances with NewGaugeVec. type GaugeVec struct { - *MetricVec + *metricVec } // NewGaugeVec creates a new GaugeVec based on the provided GaugeOpts and -// partitioned by the given label names. At least one label name must be -// provided. +// partitioned by the given label names. func NewGaugeVec(opts GaugeOpts, labelNames []string) *GaugeVec { desc := NewDesc( BuildFQName(opts.Namespace, opts.Subsystem, opts.Name), @@ -72,28 +145,62 @@ func NewGaugeVec(opts GaugeOpts, labelNames []string) *GaugeVec { opts.ConstLabels, ) return &GaugeVec{ - MetricVec: newMetricVec(desc, func(lvs ...string) Metric { - return newValue(desc, GaugeValue, 0, lvs...) + metricVec: newMetricVec(desc, func(lvs ...string) Metric { + if len(lvs) != len(desc.variableLabels) { + panic(makeInconsistentCardinalityError(desc.fqName, desc.variableLabels, lvs)) + } + result := &gauge{desc: desc, labelPairs: makeLabelPairs(desc, lvs)} + result.init(result) // Init self-collection. + return result }), } } -// GetMetricWithLabelValues replaces the method of the same name in -// MetricVec. The difference is that this method returns a Gauge and not a -// Metric so that no type conversion is required. -func (m *GaugeVec) GetMetricWithLabelValues(lvs ...string) (Gauge, error) { - metric, err := m.MetricVec.GetMetricWithLabelValues(lvs...) +// GetMetricWithLabelValues returns the Gauge for the given slice of label +// values (same order as the VariableLabels in Desc). If that combination of +// label values is accessed for the first time, a new Gauge is created. +// +// It is possible to call this method without using the returned Gauge to only +// create the new Gauge but leave it at its starting value 0. See also the +// SummaryVec example. +// +// Keeping the Gauge for later use is possible (and should be considered if +// performance is critical), but keep in mind that Reset, DeleteLabelValues and +// Delete can be used to delete the Gauge from the GaugeVec. In that case, the +// Gauge will still exist, but it will not be exported anymore, even if a +// Gauge with the same label values is created later. See also the CounterVec +// example. +// +// An error is returned if the number of label values is not the same as the +// number of VariableLabels in Desc (minus any curried labels). +// +// Note that for more than one label value, this method is prone to mistakes +// caused by an incorrect order of arguments. Consider GetMetricWith(Labels) as +// an alternative to avoid that type of mistake. For higher label numbers, the +// latter has a much more readable (albeit more verbose) syntax, but it comes +// with a performance overhead (for creating and processing the Labels map). +func (v *GaugeVec) GetMetricWithLabelValues(lvs ...string) (Gauge, error) { + metric, err := v.metricVec.getMetricWithLabelValues(lvs...) if metric != nil { return metric.(Gauge), err } return nil, err } -// GetMetricWith replaces the method of the same name in MetricVec. The -// difference is that this method returns a Gauge and not a Metric so that no -// type conversion is required. -func (m *GaugeVec) GetMetricWith(labels Labels) (Gauge, error) { - metric, err := m.MetricVec.GetMetricWith(labels) +// GetMetricWith returns the Gauge for the given Labels map (the label names +// must match those of the VariableLabels in Desc). If that label map is +// accessed for the first time, a new Gauge is created. Implications of +// creating a Gauge without using it and keeping the Gauge for later use are +// the same as for GetMetricWithLabelValues. +// +// An error is returned if the number and names of the Labels are inconsistent +// with those of the VariableLabels in Desc (minus any curried labels). +// +// This method is used for the same purpose as +// GetMetricWithLabelValues(...string). See there for pros and cons of the two +// methods. +func (v *GaugeVec) GetMetricWith(labels Labels) (Gauge, error) { + metric, err := v.metricVec.getMetricWith(labels) if metric != nil { return metric.(Gauge), err } @@ -101,18 +208,57 @@ func (m *GaugeVec) GetMetricWith(labels Labels) (Gauge, error) { } // WithLabelValues works as GetMetricWithLabelValues, but panics where -// GetMetricWithLabelValues would have returned an error. By not returning an -// error, WithLabelValues allows shortcuts like +// GetMetricWithLabelValues would have returned an error. Not returning an +// error allows shortcuts like // myVec.WithLabelValues("404", "GET").Add(42) -func (m *GaugeVec) WithLabelValues(lvs ...string) Gauge { - return m.MetricVec.WithLabelValues(lvs...).(Gauge) +func (v *GaugeVec) WithLabelValues(lvs ...string) Gauge { + g, err := v.GetMetricWithLabelValues(lvs...) + if err != nil { + panic(err) + } + return g } // With works as GetMetricWith, but panics where GetMetricWithLabels would have -// returned an error. By not returning an error, With allows shortcuts like -// myVec.With(Labels{"code": "404", "method": "GET"}).Add(42) -func (m *GaugeVec) With(labels Labels) Gauge { - return m.MetricVec.With(labels).(Gauge) +// returned an error. Not returning an error allows shortcuts like +// myVec.With(prometheus.Labels{"code": "404", "method": "GET"}).Add(42) +func (v *GaugeVec) With(labels Labels) Gauge { + g, err := v.GetMetricWith(labels) + if err != nil { + panic(err) + } + return g +} + +// CurryWith returns a vector curried with the provided labels, i.e. the +// returned vector has those labels pre-set for all labeled operations performed +// on it. The cardinality of the curried vector is reduced accordingly. The +// order of the remaining labels stays the same (just with the curried labels +// taken out of the sequence – which is relevant for the +// (GetMetric)WithLabelValues methods). It is possible to curry a curried +// vector, but only with labels not yet used for currying before. +// +// The metrics contained in the GaugeVec are shared between the curried and +// uncurried vectors. They are just accessed differently. Curried and uncurried +// vectors behave identically in terms of collection. Only one must be +// registered with a given registry (usually the uncurried version). The Reset +// method deletes all metrics, even if called on a curried vector. +func (v *GaugeVec) CurryWith(labels Labels) (*GaugeVec, error) { + vec, err := v.curryWith(labels) + if vec != nil { + return &GaugeVec{vec}, err + } + return nil, err +} + +// MustCurryWith works as CurryWith but panics where CurryWith would have +// returned an error. +func (v *GaugeVec) MustCurryWith(labels Labels) *GaugeVec { + vec, err := v.CurryWith(labels) + if err != nil { + panic(err) + } + return vec } // GaugeFunc is a Gauge whose value is determined at collect time by calling a diff --git a/vendor/github.com/prometheus/client_golang/prometheus/go_collector.go b/vendor/github.com/prometheus/client_golang/prometheus/go_collector.go index abc9d4e..ba3b933 100644 --- a/vendor/github.com/prometheus/client_golang/prometheus/go_collector.go +++ b/vendor/github.com/prometheus/client_golang/prometheus/go_collector.go @@ -1,3 +1,16 @@ +// Copyright 2018 The Prometheus Authors +// Licensed under the Apache License, Version 2.0 (the "License"); +// you may not use this file except in compliance with the License. +// You may obtain a copy of the License at +// +// http://www.apache.org/licenses/LICENSE-2.0 +// +// Unless required by applicable law or agreed to in writing, software +// distributed under the License is distributed on an "AS IS" BASIS, +// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. +// See the License for the specific language governing permissions and +// limitations under the License. + package prometheus import ( @@ -8,26 +21,39 @@ import ( ) type goCollector struct { - goroutines Gauge - gcDesc *Desc + goroutinesDesc *Desc + threadsDesc *Desc + gcDesc *Desc + goInfoDesc *Desc // metrics to describe and collect metrics memStatsMetrics } -// NewGoCollector returns a collector which exports metrics about the current -// go process. +// NewGoCollector returns a collector which exports metrics about the current Go +// process. This includes memory stats. To collect those, runtime.ReadMemStats +// is called. This causes a stop-the-world, which is very short with Go1.9+ +// (~25µs). However, with older Go versions, the stop-the-world duration depends +// on the heap size and can be quite significant (~1.7 ms/GiB as per +// https://go-review.googlesource.com/c/go/+/34937). func NewGoCollector() Collector { return &goCollector{ - goroutines: NewGauge(GaugeOpts{ - Namespace: "go", - Name: "goroutines", - Help: "Number of goroutines that currently exist.", - }), + goroutinesDesc: NewDesc( + "go_goroutines", + "Number of goroutines that currently exist.", + nil, nil), + threadsDesc: NewDesc( + "go_threads", + "Number of OS threads created.", + nil, nil), gcDesc: NewDesc( "go_gc_duration_seconds", "A summary of the GC invocation durations.", nil, nil), + goInfoDesc: NewDesc( + "go_info", + "Information about the Go environment.", + nil, Labels{"version": runtime.Version()}), metrics: memStatsMetrics{ { desc: NewDesc( @@ -48,7 +74,7 @@ func NewGoCollector() Collector { }, { desc: NewDesc( memstatNamespace("sys_bytes"), - "Number of bytes obtained by system. Sum of all system allocations.", + "Number of bytes obtained from system.", nil, nil, ), eval: func(ms *runtime.MemStats) float64 { return float64(ms.Sys) }, @@ -111,12 +137,12 @@ func NewGoCollector() Collector { valType: GaugeValue, }, { desc: NewDesc( - memstatNamespace("heap_released_bytes_total"), - "Total number of heap bytes released to OS.", + memstatNamespace("heap_released_bytes"), + "Number of heap bytes released to OS.", nil, nil, ), eval: func(ms *runtime.MemStats) float64 { return float64(ms.HeapReleased) }, - valType: CounterValue, + valType: GaugeValue, }, { desc: NewDesc( memstatNamespace("heap_objects"), @@ -213,6 +239,14 @@ func NewGoCollector() Collector { ), eval: func(ms *runtime.MemStats) float64 { return float64(ms.LastGC) / 1e9 }, valType: GaugeValue, + }, { + desc: NewDesc( + memstatNamespace("gc_cpu_fraction"), + "The fraction of this program's available CPU time used by the GC since the program started.", + nil, nil, + ), + eval: func(ms *runtime.MemStats) float64 { return ms.GCCPUFraction }, + valType: GaugeValue, }, }, } @@ -224,9 +258,10 @@ func memstatNamespace(s string) string { // Describe returns all descriptions of the collector. func (c *goCollector) Describe(ch chan<- *Desc) { - ch <- c.goroutines.Desc() + ch <- c.goroutinesDesc + ch <- c.threadsDesc ch <- c.gcDesc - + ch <- c.goInfoDesc for _, i := range c.metrics { ch <- i.desc } @@ -234,8 +269,9 @@ func (c *goCollector) Describe(ch chan<- *Desc) { // Collect returns the current state of all metrics of the collector. func (c *goCollector) Collect(ch chan<- Metric) { - c.goroutines.Set(float64(runtime.NumGoroutine())) - ch <- c.goroutines + ch <- MustNewConstMetric(c.goroutinesDesc, GaugeValue, float64(runtime.NumGoroutine())) + n, _ := runtime.ThreadCreateProfile(nil) + ch <- MustNewConstMetric(c.threadsDesc, GaugeValue, float64(n)) var stats debug.GCStats stats.PauseQuantiles = make([]time.Duration, 5) @@ -246,7 +282,9 @@ func (c *goCollector) Collect(ch chan<- Metric) { quantiles[float64(idx+1)/float64(len(stats.PauseQuantiles)-1)] = pq.Seconds() } quantiles[0.0] = stats.PauseQuantiles[0].Seconds() - ch <- MustNewConstSummary(c.gcDesc, uint64(stats.NumGC), float64(stats.PauseTotal.Seconds()), quantiles) + ch <- MustNewConstSummary(c.gcDesc, uint64(stats.NumGC), stats.PauseTotal.Seconds(), quantiles) + + ch <- MustNewConstMetric(c.goInfoDesc, GaugeValue, 1) ms := &runtime.MemStats{} runtime.ReadMemStats(ms) diff --git a/vendor/github.com/prometheus/client_golang/prometheus/histogram.go b/vendor/github.com/prometheus/client_golang/prometheus/histogram.go index 9719e8f..f88da70 100644 --- a/vendor/github.com/prometheus/client_golang/prometheus/histogram.go +++ b/vendor/github.com/prometheus/client_golang/prometheus/histogram.go @@ -16,7 +16,9 @@ package prometheus import ( "fmt" "math" + "runtime" "sort" + "sync" "sync/atomic" "github.com/golang/protobuf/proto" @@ -108,8 +110,9 @@ func ExponentialBuckets(start, factor float64, count int) []float64 { } // HistogramOpts bundles the options for creating a Histogram metric. It is -// mandatory to set Name and Help to a non-empty string. All other fields are -// optional and can safely be left at their zero value. +// mandatory to set Name to a non-empty string. All other fields are optional +// and can safely be left at their zero value, although it is strongly +// encouraged to set a Help string. type HistogramOpts struct { // Namespace, Subsystem, and Name are components of the fully-qualified // name of the Histogram (created by joining these components with @@ -120,29 +123,22 @@ type HistogramOpts struct { Subsystem string Name string - // Help provides information about this Histogram. Mandatory! + // Help provides information about this Histogram. // // Metrics with the same fully-qualified name must have the same Help // string. Help string - // ConstLabels are used to attach fixed labels to this - // Histogram. Histograms with the same fully-qualified name must have the - // same label names in their ConstLabels. + // ConstLabels are used to attach fixed labels to this metric. Metrics + // with the same fully-qualified name must have the same label names in + // their ConstLabels. // - // Note that in most cases, labels have a value that varies during the - // lifetime of a process. Those labels are usually managed with a - // HistogramVec. ConstLabels serve only special purposes. One is for the - // special case where the value of a label does not change during the - // lifetime of a process, e.g. if the revision of the running binary is - // put into a label. Another, more advanced purpose is if more than one - // Collector needs to collect Histograms with the same fully-qualified - // name. In that case, those Summaries must differ in the values of - // their ConstLabels. See the Collector examples. - // - // If the value of a label never changes (not even between binaries), - // that label most likely should not be a label at all (but part of the - // metric name). + // ConstLabels are only used rarely. In particular, do not use them to + // attach the same labels to all your metrics. Those use cases are + // better covered by target labels set by the scraping Prometheus + // server, or by one specific metric (e.g. a build_info or a + // machine_role metric). See also + // https://prometheus.io/docs/instrumenting/writing_exporters/#target-labels,-not-static-scraped-labels ConstLabels Labels // Buckets defines the buckets into which observations are counted. Each @@ -169,7 +165,7 @@ func NewHistogram(opts HistogramOpts) Histogram { func newHistogram(desc *Desc, opts HistogramOpts, labelValues ...string) Histogram { if len(desc.variableLabels) != len(labelValues) { - panic(errInconsistentCardinality) + panic(makeInconsistentCardinalityError(desc.fqName, desc.variableLabels, labelValues)) } for _, n := range desc.variableLabels { @@ -191,6 +187,7 @@ func newHistogram(desc *Desc, opts HistogramOpts, labelValues ...string) Histogr desc: desc, upperBounds: opts.Buckets, labelPairs: makeLabelPairs(desc, labelValues), + counts: [2]*histogramCounts{&histogramCounts{}, &histogramCounts{}}, } for i, upperBound := range h.upperBounds { if i < len(h.upperBounds)-1 { @@ -207,28 +204,53 @@ func newHistogram(desc *Desc, opts HistogramOpts, labelValues ...string) Histogr } } } - // Finally we know the final length of h.upperBounds and can make counts. - h.counts = make([]uint64, len(h.upperBounds)) + // Finally we know the final length of h.upperBounds and can make counts + // for both states: + h.counts[0].buckets = make([]uint64, len(h.upperBounds)) + h.counts[1].buckets = make([]uint64, len(h.upperBounds)) h.init(h) // Init self-collection. return h } -type histogram struct { +type histogramCounts struct { // sumBits contains the bits of the float64 representing the sum of all // observations. sumBits and count have to go first in the struct to // guarantee alignment for atomic operations. // http://golang.org/pkg/sync/atomic/#pkg-note-BUG sumBits uint64 count uint64 + buckets []uint64 +} + +type histogram struct { + // countAndHotIdx is a complicated one. For lock-free yet atomic + // observations, we need to save the total count of observations again, + // combined with the index of the currently-hot counts struct, so that + // we can perform the operation on both values atomically. The least + // significant bit defines the hot counts struct. The remaining 63 bits + // represent the total count of observations. This happens under the + // assumption that the 63bit count will never overflow. Rationale: An + // observations takes about 30ns. Let's assume it could happen in + // 10ns. Overflowing the counter will then take at least (2^63)*10ns, + // which is about 3000 years. + // + // This has to be first in the struct for 64bit alignment. See + // http://golang.org/pkg/sync/atomic/#pkg-note-BUG + countAndHotIdx uint64 selfCollector - // Note that there is no mutex required. - - desc *Desc + desc *Desc + writeMtx sync.Mutex // Only used in the Write method. upperBounds []float64 - counts []uint64 + + // Two counts, one is "hot" for lock-free observations, the other is + // "cold" for writing out a dto.Metric. It has to be an array of + // pointers to guarantee 64bit alignment of the histogramCounts, see + // http://golang.org/pkg/sync/atomic/#pkg-note-BUG. + counts [2]*histogramCounts + hotIdx int // Index of currently-hot counts. Only used within Write. labelPairs []*dto.LabelPair } @@ -248,36 +270,113 @@ func (h *histogram) Observe(v float64) { // 100 buckets: 78.1 ns/op linear - binary 54.9 ns/op // 300 buckets: 154 ns/op linear - binary 61.6 ns/op i := sort.SearchFloat64s(h.upperBounds, v) - if i < len(h.counts) { - atomic.AddUint64(&h.counts[i], 1) + + // We increment h.countAndHotIdx by 2 so that the counter in the upper + // 63 bits gets incremented by 1. At the same time, we get the new value + // back, which we can use to find the currently-hot counts. + n := atomic.AddUint64(&h.countAndHotIdx, 2) + hotCounts := h.counts[n%2] + + if i < len(h.upperBounds) { + atomic.AddUint64(&hotCounts.buckets[i], 1) } - atomic.AddUint64(&h.count, 1) for { - oldBits := atomic.LoadUint64(&h.sumBits) + oldBits := atomic.LoadUint64(&hotCounts.sumBits) newBits := math.Float64bits(math.Float64frombits(oldBits) + v) - if atomic.CompareAndSwapUint64(&h.sumBits, oldBits, newBits) { + if atomic.CompareAndSwapUint64(&hotCounts.sumBits, oldBits, newBits) { break } } + // Increment count last as we take it as a signal that the observation + // is complete. + atomic.AddUint64(&hotCounts.count, 1) } func (h *histogram) Write(out *dto.Metric) error { - his := &dto.Histogram{} - buckets := make([]*dto.Bucket, len(h.upperBounds)) + var ( + his = &dto.Histogram{} + buckets = make([]*dto.Bucket, len(h.upperBounds)) + hotCounts, coldCounts *histogramCounts + count uint64 + ) - his.SampleSum = proto.Float64(math.Float64frombits(atomic.LoadUint64(&h.sumBits))) - his.SampleCount = proto.Uint64(atomic.LoadUint64(&h.count)) - var count uint64 + // For simplicity, we mutex the rest of this method. It is not in the + // hot path, i.e. Observe is called much more often than Write. The + // complication of making Write lock-free isn't worth it. + h.writeMtx.Lock() + defer h.writeMtx.Unlock() + + // This is a bit arcane, which is why the following spells out this if + // clause in English: + // + // If the currently-hot counts struct is #0, we atomically increment + // h.countAndHotIdx by 1 so that from now on Observe will use the counts + // struct #1. Furthermore, the atomic increment gives us the new value, + // which, in its most significant 63 bits, tells us the count of + // observations done so far up to and including currently ongoing + // observations still using the counts struct just changed from hot to + // cold. To have a normal uint64 for the count, we bitshift by 1 and + // save the result in count. We also set h.hotIdx to 1 for the next + // Write call, and we will refer to counts #1 as hotCounts and to counts + // #0 as coldCounts. + // + // If the currently-hot counts struct is #1, we do the corresponding + // things the other way round. We have to _decrement_ h.countAndHotIdx + // (which is a bit arcane in itself, as we have to express -1 with an + // unsigned int...). + if h.hotIdx == 0 { + count = atomic.AddUint64(&h.countAndHotIdx, 1) >> 1 + h.hotIdx = 1 + hotCounts = h.counts[1] + coldCounts = h.counts[0] + } else { + count = atomic.AddUint64(&h.countAndHotIdx, ^uint64(0)) >> 1 // Decrement. + h.hotIdx = 0 + hotCounts = h.counts[0] + coldCounts = h.counts[1] + } + + // Now we have to wait for the now-declared-cold counts to actually cool + // down, i.e. wait for all observations still using it to finish. That's + // the case once the count in the cold counts struct is the same as the + // one atomically retrieved from the upper 63bits of h.countAndHotIdx. + for { + if count == atomic.LoadUint64(&coldCounts.count) { + break + } + runtime.Gosched() // Let observations get work done. + } + + his.SampleCount = proto.Uint64(count) + his.SampleSum = proto.Float64(math.Float64frombits(atomic.LoadUint64(&coldCounts.sumBits))) + var cumCount uint64 for i, upperBound := range h.upperBounds { - count += atomic.LoadUint64(&h.counts[i]) + cumCount += atomic.LoadUint64(&coldCounts.buckets[i]) buckets[i] = &dto.Bucket{ - CumulativeCount: proto.Uint64(count), + CumulativeCount: proto.Uint64(cumCount), UpperBound: proto.Float64(upperBound), } } + his.Bucket = buckets out.Histogram = his out.Label = h.labelPairs + + // Finally add all the cold counts to the new hot counts and reset the cold counts. + atomic.AddUint64(&hotCounts.count, count) + atomic.StoreUint64(&coldCounts.count, 0) + for { + oldBits := atomic.LoadUint64(&hotCounts.sumBits) + newBits := math.Float64bits(math.Float64frombits(oldBits) + his.GetSampleSum()) + if atomic.CompareAndSwapUint64(&hotCounts.sumBits, oldBits, newBits) { + atomic.StoreUint64(&coldCounts.sumBits, 0) + break + } + } + for i := range h.upperBounds { + atomic.AddUint64(&hotCounts.buckets[i], atomic.LoadUint64(&coldCounts.buckets[i])) + atomic.StoreUint64(&coldCounts.buckets[i], 0) + } return nil } @@ -287,12 +386,11 @@ func (h *histogram) Write(out *dto.Metric) error { // (e.g. HTTP request latencies, partitioned by status code and method). Create // instances with NewHistogramVec. type HistogramVec struct { - *MetricVec + *metricVec } // NewHistogramVec creates a new HistogramVec based on the provided HistogramOpts and -// partitioned by the given label names. At least one label name must be -// provided. +// partitioned by the given label names. func NewHistogramVec(opts HistogramOpts, labelNames []string) *HistogramVec { desc := NewDesc( BuildFQName(opts.Namespace, opts.Subsystem, opts.Name), @@ -301,47 +399,116 @@ func NewHistogramVec(opts HistogramOpts, labelNames []string) *HistogramVec { opts.ConstLabels, ) return &HistogramVec{ - MetricVec: newMetricVec(desc, func(lvs ...string) Metric { + metricVec: newMetricVec(desc, func(lvs ...string) Metric { return newHistogram(desc, opts, lvs...) }), } } -// GetMetricWithLabelValues replaces the method of the same name in -// MetricVec. The difference is that this method returns a Histogram and not a -// Metric so that no type conversion is required. -func (m *HistogramVec) GetMetricWithLabelValues(lvs ...string) (Histogram, error) { - metric, err := m.MetricVec.GetMetricWithLabelValues(lvs...) +// GetMetricWithLabelValues returns the Histogram for the given slice of label +// values (same order as the VariableLabels in Desc). If that combination of +// label values is accessed for the first time, a new Histogram is created. +// +// It is possible to call this method without using the returned Histogram to only +// create the new Histogram but leave it at its starting value, a Histogram without +// any observations. +// +// Keeping the Histogram for later use is possible (and should be considered if +// performance is critical), but keep in mind that Reset, DeleteLabelValues and +// Delete can be used to delete the Histogram from the HistogramVec. In that case, the +// Histogram will still exist, but it will not be exported anymore, even if a +// Histogram with the same label values is created later. See also the CounterVec +// example. +// +// An error is returned if the number of label values is not the same as the +// number of VariableLabels in Desc (minus any curried labels). +// +// Note that for more than one label value, this method is prone to mistakes +// caused by an incorrect order of arguments. Consider GetMetricWith(Labels) as +// an alternative to avoid that type of mistake. For higher label numbers, the +// latter has a much more readable (albeit more verbose) syntax, but it comes +// with a performance overhead (for creating and processing the Labels map). +// See also the GaugeVec example. +func (v *HistogramVec) GetMetricWithLabelValues(lvs ...string) (Observer, error) { + metric, err := v.metricVec.getMetricWithLabelValues(lvs...) if metric != nil { - return metric.(Histogram), err + return metric.(Observer), err } return nil, err } -// GetMetricWith replaces the method of the same name in MetricVec. The -// difference is that this method returns a Histogram and not a Metric so that no -// type conversion is required. -func (m *HistogramVec) GetMetricWith(labels Labels) (Histogram, error) { - metric, err := m.MetricVec.GetMetricWith(labels) +// GetMetricWith returns the Histogram for the given Labels map (the label names +// must match those of the VariableLabels in Desc). If that label map is +// accessed for the first time, a new Histogram is created. Implications of +// creating a Histogram without using it and keeping the Histogram for later use +// are the same as for GetMetricWithLabelValues. +// +// An error is returned if the number and names of the Labels are inconsistent +// with those of the VariableLabels in Desc (minus any curried labels). +// +// This method is used for the same purpose as +// GetMetricWithLabelValues(...string). See there for pros and cons of the two +// methods. +func (v *HistogramVec) GetMetricWith(labels Labels) (Observer, error) { + metric, err := v.metricVec.getMetricWith(labels) if metric != nil { - return metric.(Histogram), err + return metric.(Observer), err } return nil, err } // WithLabelValues works as GetMetricWithLabelValues, but panics where -// GetMetricWithLabelValues would have returned an error. By not returning an -// error, WithLabelValues allows shortcuts like +// GetMetricWithLabelValues would have returned an error. Not returning an +// error allows shortcuts like // myVec.WithLabelValues("404", "GET").Observe(42.21) -func (m *HistogramVec) WithLabelValues(lvs ...string) Histogram { - return m.MetricVec.WithLabelValues(lvs...).(Histogram) +func (v *HistogramVec) WithLabelValues(lvs ...string) Observer { + h, err := v.GetMetricWithLabelValues(lvs...) + if err != nil { + panic(err) + } + return h } -// With works as GetMetricWith, but panics where GetMetricWithLabels would have -// returned an error. By not returning an error, With allows shortcuts like -// myVec.With(Labels{"code": "404", "method": "GET"}).Observe(42.21) -func (m *HistogramVec) With(labels Labels) Histogram { - return m.MetricVec.With(labels).(Histogram) +// With works as GetMetricWith but panics where GetMetricWithLabels would have +// returned an error. Not returning an error allows shortcuts like +// myVec.With(prometheus.Labels{"code": "404", "method": "GET"}).Observe(42.21) +func (v *HistogramVec) With(labels Labels) Observer { + h, err := v.GetMetricWith(labels) + if err != nil { + panic(err) + } + return h +} + +// CurryWith returns a vector curried with the provided labels, i.e. the +// returned vector has those labels pre-set for all labeled operations performed +// on it. The cardinality of the curried vector is reduced accordingly. The +// order of the remaining labels stays the same (just with the curried labels +// taken out of the sequence – which is relevant for the +// (GetMetric)WithLabelValues methods). It is possible to curry a curried +// vector, but only with labels not yet used for currying before. +// +// The metrics contained in the HistogramVec are shared between the curried and +// uncurried vectors. They are just accessed differently. Curried and uncurried +// vectors behave identically in terms of collection. Only one must be +// registered with a given registry (usually the uncurried version). The Reset +// method deletes all metrics, even if called on a curried vector. +func (v *HistogramVec) CurryWith(labels Labels) (ObserverVec, error) { + vec, err := v.curryWith(labels) + if vec != nil { + return &HistogramVec{vec}, err + } + return nil, err +} + +// MustCurryWith works as CurryWith but panics where CurryWith would have +// returned an error. +func (v *HistogramVec) MustCurryWith(labels Labels) ObserverVec { + vec, err := v.CurryWith(labels) + if err != nil { + panic(err) + } + return vec } type constHistogram struct { @@ -393,7 +560,7 @@ func (h *constHistogram) Write(out *dto.Metric) error { // bucket. // // NewConstHistogram returns an error if the length of labelValues is not -// consistent with the variable labels in Desc. +// consistent with the variable labels in Desc or if Desc is invalid. func NewConstHistogram( desc *Desc, count uint64, @@ -401,8 +568,11 @@ func NewConstHistogram( buckets map[float64]uint64, labelValues ...string, ) (Metric, error) { - if len(desc.variableLabels) != len(labelValues) { - return nil, errInconsistentCardinality + if desc.err != nil { + return nil, desc.err + } + if err := validateLabelValues(labelValues, len(desc.variableLabels)); err != nil { + return nil, err } return &constHistogram{ desc: desc, diff --git a/vendor/github.com/prometheus/client_golang/prometheus/http.go b/vendor/github.com/prometheus/client_golang/prometheus/http.go index 67ee5ac..9f0875b 100644 --- a/vendor/github.com/prometheus/client_golang/prometheus/http.go +++ b/vendor/github.com/prometheus/client_golang/prometheus/http.go @@ -15,9 +15,7 @@ package prometheus import ( "bufio" - "bytes" "compress/gzip" - "fmt" "io" "net" "net/http" @@ -41,19 +39,10 @@ const ( acceptEncodingHeader = "Accept-Encoding" ) -var bufPool sync.Pool - -func getBuf() *bytes.Buffer { - buf := bufPool.Get() - if buf == nil { - return &bytes.Buffer{} - } - return buf.(*bytes.Buffer) -} - -func giveBuf(buf *bytes.Buffer) { - buf.Reset() - bufPool.Put(buf) +var gzipPool = sync.Pool{ + New: func() interface{} { + return gzip.NewWriter(nil) + }, } // Handler returns an HTTP handler for the DefaultGatherer. It is @@ -61,68 +50,50 @@ func giveBuf(buf *bytes.Buffer) { // name). // // Deprecated: Please note the issues described in the doc comment of -// InstrumentHandler. You might want to consider using promhttp.Handler instead -// (which is non instrumented). +// InstrumentHandler. You might want to consider using promhttp.Handler instead. func Handler() http.Handler { return InstrumentHandler("prometheus", UninstrumentedHandler()) } // UninstrumentedHandler returns an HTTP handler for the DefaultGatherer. // -// Deprecated: Use promhttp.Handler instead. See there for further documentation. +// Deprecated: Use promhttp.HandlerFor(DefaultGatherer, promhttp.HandlerOpts{}) +// instead. See there for further documentation. func UninstrumentedHandler() http.Handler { - return http.HandlerFunc(func(w http.ResponseWriter, req *http.Request) { + return http.HandlerFunc(func(rsp http.ResponseWriter, req *http.Request) { mfs, err := DefaultGatherer.Gather() if err != nil { - http.Error(w, "An error has occurred during metrics collection:\n\n"+err.Error(), http.StatusInternalServerError) + httpError(rsp, err) return } contentType := expfmt.Negotiate(req.Header) - buf := getBuf() - defer giveBuf(buf) - writer, encoding := decorateWriter(req, buf) - enc := expfmt.NewEncoder(writer, contentType) - var lastErr error + header := rsp.Header() + header.Set(contentTypeHeader, string(contentType)) + + w := io.Writer(rsp) + if gzipAccepted(req.Header) { + header.Set(contentEncodingHeader, "gzip") + gz := gzipPool.Get().(*gzip.Writer) + defer gzipPool.Put(gz) + + gz.Reset(w) + defer gz.Close() + + w = gz + } + + enc := expfmt.NewEncoder(w, contentType) + for _, mf := range mfs { if err := enc.Encode(mf); err != nil { - lastErr = err - http.Error(w, "An error has occurred during metrics encoding:\n\n"+err.Error(), http.StatusInternalServerError) + httpError(rsp, err) return } } - if closer, ok := writer.(io.Closer); ok { - closer.Close() - } - if lastErr != nil && buf.Len() == 0 { - http.Error(w, "No metrics encoded, last error:\n\n"+err.Error(), http.StatusInternalServerError) - return - } - header := w.Header() - header.Set(contentTypeHeader, string(contentType)) - header.Set(contentLengthHeader, fmt.Sprint(buf.Len())) - if encoding != "" { - header.Set(contentEncodingHeader, encoding) - } - w.Write(buf.Bytes()) }) } -// decorateWriter wraps a writer to handle gzip compression if requested. It -// returns the decorated writer and the appropriate "Content-Encoding" header -// (which is empty if no compression is enabled). -func decorateWriter(request *http.Request, writer io.Writer) (io.Writer, string) { - header := request.Header.Get(acceptEncodingHeader) - parts := strings.Split(header, ",") - for _, part := range parts { - part := strings.TrimSpace(part) - if part == "gzip" || strings.HasPrefix(part, "gzip;") { - return gzip.NewWriter(writer), "gzip" - } - } - return writer, "" -} - var instLabels = []string{"method", "code"} type nower interface { @@ -139,16 +110,6 @@ var now nower = nowFunc(func() time.Time { return time.Now() }) -func nowSeries(t ...time.Time) nower { - return nowFunc(func() time.Time { - defer func() { - t = t[1:] - }() - - return t[0] - }) -} - // InstrumentHandler wraps the given HTTP handler for instrumentation. It // registers four metric collectors (if not already done) and reports HTTP // metrics to the (newly or already) registered collectors: http_requests_total @@ -158,23 +119,16 @@ func nowSeries(t ...time.Time) nower { // value. http_requests_total is a metric vector partitioned by HTTP method // (label name "method") and HTTP status code (label name "code"). // -// Deprecated: InstrumentHandler has several issues: -// -// - It uses Summaries rather than Histograms. Summaries are not useful if -// aggregation across multiple instances is required. -// -// - It uses microseconds as unit, which is deprecated and should be replaced by -// seconds. -// -// - The size of the request is calculated in a separate goroutine. Since this -// calculator requires access to the request header, it creates a race with -// any writes to the header performed during request handling. -// httputil.ReverseProxy is a prominent example for a handler -// performing such writes. -// -// Upcoming versions of this package will provide ways of instrumenting HTTP -// handlers that are more flexible and have fewer issues. Please prefer direct -// instrumentation in the meantime. +// Deprecated: InstrumentHandler has several issues. Use the tooling provided in +// package promhttp instead. The issues are the following: (1) It uses Summaries +// rather than Histograms. Summaries are not useful if aggregation across +// multiple instances is required. (2) It uses microseconds as unit, which is +// deprecated and should be replaced by seconds. (3) The size of the request is +// calculated in a separate goroutine. Since this calculator requires access to +// the request header, it creates a race with any writes to the header performed +// during request handling. httputil.ReverseProxy is a prominent example for a +// handler performing such writes. (4) It has additional issues with HTTP/2, cf. +// https://github.com/prometheus/client_golang/issues/272. func InstrumentHandler(handlerName string, handler http.Handler) http.HandlerFunc { return InstrumentHandlerFunc(handlerName, handler.ServeHTTP) } @@ -184,12 +138,13 @@ func InstrumentHandler(handlerName string, handler http.Handler) http.HandlerFun // issues). // // Deprecated: InstrumentHandlerFunc is deprecated for the same reasons as -// InstrumentHandler is. +// InstrumentHandler is. Use the tooling provided in package promhttp instead. func InstrumentHandlerFunc(handlerName string, handlerFunc func(http.ResponseWriter, *http.Request)) http.HandlerFunc { return InstrumentHandlerFuncWithOpts( SummaryOpts{ Subsystem: "http", ConstLabels: Labels{"handler": handlerName}, + Objectives: map[float64]float64{0.5: 0.05, 0.9: 0.01, 0.99: 0.001}, }, handlerFunc, ) @@ -222,7 +177,7 @@ func InstrumentHandlerFunc(handlerName string, handlerFunc func(http.ResponseWri // SummaryOpts. // // Deprecated: InstrumentHandlerWithOpts is deprecated for the same reasons as -// InstrumentHandler is. +// InstrumentHandler is. Use the tooling provided in package promhttp instead. func InstrumentHandlerWithOpts(opts SummaryOpts, handler http.Handler) http.HandlerFunc { return InstrumentHandlerFuncWithOpts(opts, handler.ServeHTTP) } @@ -233,7 +188,7 @@ func InstrumentHandlerWithOpts(opts SummaryOpts, handler http.Handler) http.Hand // SummaryOpts are used. // // Deprecated: InstrumentHandlerFuncWithOpts is deprecated for the same reasons -// as InstrumentHandler is. +// as InstrumentHandler is. Use the tooling provided in package promhttp instead. func InstrumentHandlerFuncWithOpts(opts SummaryOpts, handlerFunc func(http.ResponseWriter, *http.Request)) http.HandlerFunc { reqCnt := NewCounterVec( CounterOpts{ @@ -245,34 +200,52 @@ func InstrumentHandlerFuncWithOpts(opts SummaryOpts, handlerFunc func(http.Respo }, instLabels, ) + if err := Register(reqCnt); err != nil { + if are, ok := err.(AlreadyRegisteredError); ok { + reqCnt = are.ExistingCollector.(*CounterVec) + } else { + panic(err) + } + } opts.Name = "request_duration_microseconds" opts.Help = "The HTTP request latencies in microseconds." reqDur := NewSummary(opts) + if err := Register(reqDur); err != nil { + if are, ok := err.(AlreadyRegisteredError); ok { + reqDur = are.ExistingCollector.(Summary) + } else { + panic(err) + } + } opts.Name = "request_size_bytes" opts.Help = "The HTTP request sizes in bytes." reqSz := NewSummary(opts) + if err := Register(reqSz); err != nil { + if are, ok := err.(AlreadyRegisteredError); ok { + reqSz = are.ExistingCollector.(Summary) + } else { + panic(err) + } + } opts.Name = "response_size_bytes" opts.Help = "The HTTP response sizes in bytes." resSz := NewSummary(opts) - - regReqCnt := MustRegisterOrGet(reqCnt).(*CounterVec) - regReqDur := MustRegisterOrGet(reqDur).(Summary) - regReqSz := MustRegisterOrGet(reqSz).(Summary) - regResSz := MustRegisterOrGet(resSz).(Summary) + if err := Register(resSz); err != nil { + if are, ok := err.(AlreadyRegisteredError); ok { + resSz = are.ExistingCollector.(Summary) + } else { + panic(err) + } + } return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) { now := time.Now() delegate := &responseWriterDelegator{ResponseWriter: w} - out := make(chan int) - urlLen := 0 - if r.URL != nil { - urlLen = len(r.URL.String()) - } - go computeApproximateRequestSize(r, out, urlLen) + out := computeApproximateRequestSize(r) _, cn := w.(http.CloseNotifier) _, fl := w.(http.Flusher) @@ -290,39 +263,52 @@ func InstrumentHandlerFuncWithOpts(opts SummaryOpts, handlerFunc func(http.Respo method := sanitizeMethod(r.Method) code := sanitizeCode(delegate.status) - regReqCnt.WithLabelValues(method, code).Inc() - regReqDur.Observe(elapsed) - regResSz.Observe(float64(delegate.written)) - regReqSz.Observe(float64(<-out)) + reqCnt.WithLabelValues(method, code).Inc() + reqDur.Observe(elapsed) + resSz.Observe(float64(delegate.written)) + reqSz.Observe(float64(<-out)) }) } -func computeApproximateRequestSize(r *http.Request, out chan int, s int) { - s += len(r.Method) - s += len(r.Proto) - for name, values := range r.Header { - s += len(name) - for _, value := range values { - s += len(value) +func computeApproximateRequestSize(r *http.Request) <-chan int { + // Get URL length in current goroutine for avoiding a race condition. + // HandlerFunc that runs in parallel may modify the URL. + s := 0 + if r.URL != nil { + s += len(r.URL.String()) + } + + out := make(chan int, 1) + + go func() { + s += len(r.Method) + s += len(r.Proto) + for name, values := range r.Header { + s += len(name) + for _, value := range values { + s += len(value) + } } - } - s += len(r.Host) + s += len(r.Host) - // N.B. r.Form and r.MultipartForm are assumed to be included in r.URL. + // N.B. r.Form and r.MultipartForm are assumed to be included in r.URL. - if r.ContentLength != -1 { - s += int(r.ContentLength) - } - out <- s + if r.ContentLength != -1 { + s += int(r.ContentLength) + } + out <- s + close(out) + }() + + return out } type responseWriterDelegator struct { http.ResponseWriter - handler, method string - status int - written int64 - wroteHeader bool + status int + written int64 + wroteHeader bool } func (r *responseWriterDelegator) WriteHeader(code int) { @@ -488,3 +474,31 @@ func sanitizeCode(s int) string { return strconv.Itoa(s) } } + +// gzipAccepted returns whether the client will accept gzip-encoded content. +func gzipAccepted(header http.Header) bool { + a := header.Get(acceptEncodingHeader) + parts := strings.Split(a, ",") + for _, part := range parts { + part = strings.TrimSpace(part) + if part == "gzip" || strings.HasPrefix(part, "gzip;") { + return true + } + } + return false +} + +// httpError removes any content-encoding header and then calls http.Error with +// the provided error and http.StatusInternalServerErrer. Error contents is +// supposed to be uncompressed plain text. However, same as with a plain +// http.Error, any header settings will be void if the header has already been +// sent. The error message will still be written to the writer, but it will +// probably be of limited use. +func httpError(rsp http.ResponseWriter, err error) { + rsp.Header().Del(contentEncodingHeader) + http.Error( + rsp, + "An error has occurred while serving metrics:\n\n"+err.Error(), + http.StatusInternalServerError, + ) +} diff --git a/vendor/github.com/prometheus/client_golang/prometheus/internal/metric.go b/vendor/github.com/prometheus/client_golang/prometheus/internal/metric.go new file mode 100644 index 0000000..351c26e --- /dev/null +++ b/vendor/github.com/prometheus/client_golang/prometheus/internal/metric.go @@ -0,0 +1,85 @@ +// Copyright 2018 The Prometheus Authors +// Licensed under the Apache License, Version 2.0 (the "License"); +// you may not use this file except in compliance with the License. +// You may obtain a copy of the License at +// +// http://www.apache.org/licenses/LICENSE-2.0 +// +// Unless required by applicable law or agreed to in writing, software +// distributed under the License is distributed on an "AS IS" BASIS, +// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. +// See the License for the specific language governing permissions and +// limitations under the License. + +package internal + +import ( + "sort" + + dto "github.com/prometheus/client_model/go" +) + +// metricSorter is a sortable slice of *dto.Metric. +type metricSorter []*dto.Metric + +func (s metricSorter) Len() int { + return len(s) +} + +func (s metricSorter) Swap(i, j int) { + s[i], s[j] = s[j], s[i] +} + +func (s metricSorter) Less(i, j int) bool { + if len(s[i].Label) != len(s[j].Label) { + // This should not happen. The metrics are + // inconsistent. However, we have to deal with the fact, as + // people might use custom collectors or metric family injection + // to create inconsistent metrics. So let's simply compare the + // number of labels in this case. That will still yield + // reproducible sorting. + return len(s[i].Label) < len(s[j].Label) + } + for n, lp := range s[i].Label { + vi := lp.GetValue() + vj := s[j].Label[n].GetValue() + if vi != vj { + return vi < vj + } + } + + // We should never arrive here. Multiple metrics with the same + // label set in the same scrape will lead to undefined ingestion + // behavior. However, as above, we have to provide stable sorting + // here, even for inconsistent metrics. So sort equal metrics + // by their timestamp, with missing timestamps (implying "now") + // coming last. + if s[i].TimestampMs == nil { + return false + } + if s[j].TimestampMs == nil { + return true + } + return s[i].GetTimestampMs() < s[j].GetTimestampMs() +} + +// NormalizeMetricFamilies returns a MetricFamily slice with empty +// MetricFamilies pruned and the remaining MetricFamilies sorted by name within +// the slice, with the contained Metrics sorted within each MetricFamily. +func NormalizeMetricFamilies(metricFamiliesByName map[string]*dto.MetricFamily) []*dto.MetricFamily { + for _, mf := range metricFamiliesByName { + sort.Sort(metricSorter(mf.Metric)) + } + names := make([]string, 0, len(metricFamiliesByName)) + for name, mf := range metricFamiliesByName { + if len(mf.Metric) > 0 { + names = append(names, name) + } + } + sort.Strings(names) + result := make([]*dto.MetricFamily, 0, len(names)) + for _, name := range names { + result = append(result, metricFamiliesByName[name]) + } + return result +} diff --git a/vendor/github.com/prometheus/client_golang/prometheus/labels.go b/vendor/github.com/prometheus/client_golang/prometheus/labels.go new file mode 100644 index 0000000..2744443 --- /dev/null +++ b/vendor/github.com/prometheus/client_golang/prometheus/labels.go @@ -0,0 +1,87 @@ +// Copyright 2018 The Prometheus Authors +// Licensed under the Apache License, Version 2.0 (the "License"); +// you may not use this file except in compliance with the License. +// You may obtain a copy of the License at +// +// http://www.apache.org/licenses/LICENSE-2.0 +// +// Unless required by applicable law or agreed to in writing, software +// distributed under the License is distributed on an "AS IS" BASIS, +// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. +// See the License for the specific language governing permissions and +// limitations under the License. + +package prometheus + +import ( + "errors" + "fmt" + "strings" + "unicode/utf8" + + "github.com/prometheus/common/model" +) + +// Labels represents a collection of label name -> value mappings. This type is +// commonly used with the With(Labels) and GetMetricWith(Labels) methods of +// metric vector Collectors, e.g.: +// myVec.With(Labels{"code": "404", "method": "GET"}).Add(42) +// +// The other use-case is the specification of constant label pairs in Opts or to +// create a Desc. +type Labels map[string]string + +// reservedLabelPrefix is a prefix which is not legal in user-supplied +// label names. +const reservedLabelPrefix = "__" + +var errInconsistentCardinality = errors.New("inconsistent label cardinality") + +func makeInconsistentCardinalityError(fqName string, labels, labelValues []string) error { + return fmt.Errorf( + "%s: %q has %d variable labels named %q but %d values %q were provided", + errInconsistentCardinality, fqName, + len(labels), labels, + len(labelValues), labelValues, + ) +} + +func validateValuesInLabels(labels Labels, expectedNumberOfValues int) error { + if len(labels) != expectedNumberOfValues { + return fmt.Errorf( + "%s: expected %d label values but got %d in %#v", + errInconsistentCardinality, expectedNumberOfValues, + len(labels), labels, + ) + } + + for name, val := range labels { + if !utf8.ValidString(val) { + return fmt.Errorf("label %s: value %q is not valid UTF-8", name, val) + } + } + + return nil +} + +func validateLabelValues(vals []string, expectedNumberOfValues int) error { + if len(vals) != expectedNumberOfValues { + return fmt.Errorf( + "%s: expected %d label values but got %d in %#v", + errInconsistentCardinality, expectedNumberOfValues, + len(vals), vals, + ) + } + + for _, val := range vals { + if !utf8.ValidString(val) { + return fmt.Errorf("label value %q is not valid UTF-8", val) + } + } + + return nil +} + +func checkLabelName(l string) bool { + return model.LabelName(l).IsValid() && !strings.HasPrefix(l, reservedLabelPrefix) +} diff --git a/vendor/github.com/prometheus/client_golang/prometheus/metric.go b/vendor/github.com/prometheus/client_golang/prometheus/metric.go index d4063d9..55e6d86 100644 --- a/vendor/github.com/prometheus/client_golang/prometheus/metric.go +++ b/vendor/github.com/prometheus/client_golang/prometheus/metric.go @@ -15,6 +15,9 @@ package prometheus import ( "strings" + "time" + + "github.com/golang/protobuf/proto" dto "github.com/prometheus/client_model/go" ) @@ -43,9 +46,8 @@ type Metric interface { // While populating dto.Metric, it is the responsibility of the // implementation to ensure validity of the Metric protobuf (like valid // UTF-8 strings or syntactically valid metric and label names). It is - // recommended to sort labels lexicographically. (Implementers may find - // LabelPairSorter useful for that.) Callers of Write should still make - // sure of sorting if they depend on it. + // recommended to sort labels lexicographically. Callers of Write should + // still make sure of sorting if they depend on it. Write(*dto.Metric) error // TODO(beorn7): The original rationale of passing in a pre-allocated // dto.Metric protobuf to save allocations has disappeared. The @@ -57,8 +59,9 @@ type Metric interface { // implementation XXX has its own XXXOpts type, but in most cases, it is just be // an alias of this type (which might change when the requirement arises.) // -// It is mandatory to set Name and Help to a non-empty string. All other fields -// are optional and can safely be left at their zero value. +// It is mandatory to set Name to a non-empty string. All other fields are +// optional and can safely be left at their zero value, although it is strongly +// encouraged to set a Help string. type Opts struct { // Namespace, Subsystem, and Name are components of the fully-qualified // name of the Metric (created by joining these components with @@ -69,7 +72,7 @@ type Opts struct { Subsystem string Name string - // Help provides information about this metric. Mandatory! + // Help provides information about this metric. // // Metrics with the same fully-qualified name must have the same Help // string. @@ -79,20 +82,12 @@ type Opts struct { // with the same fully-qualified name must have the same label names in // their ConstLabels. // - // Note that in most cases, labels have a value that varies during the - // lifetime of a process. Those labels are usually managed with a metric - // vector collector (like CounterVec, GaugeVec, UntypedVec). ConstLabels - // serve only special purposes. One is for the special case where the - // value of a label does not change during the lifetime of a process, - // e.g. if the revision of the running binary is put into a - // label. Another, more advanced purpose is if more than one Collector - // needs to collect Metrics with the same fully-qualified name. In that - // case, those Metrics must differ in the values of their - // ConstLabels. See the Collector examples. - // - // If the value of a label never changes (not even between binaries), - // that label most likely should not be a label at all (but part of the - // metric name). + // ConstLabels are only used rarely. In particular, do not use them to + // attach the same labels to all your metrics. Those use cases are + // better covered by target labels set by the scraping Prometheus + // server, or by one specific metric (e.g. a build_info or a + // machine_role metric). See also + // https://prometheus.io/docs/instrumenting/writing_exporters/#target-labels,-not-static-scraped-labels ConstLabels Labels } @@ -118,37 +113,22 @@ func BuildFQName(namespace, subsystem, name string) string { return name } -// LabelPairSorter implements sort.Interface. It is used to sort a slice of -// dto.LabelPair pointers. This is useful for implementing the Write method of -// custom metrics. -type LabelPairSorter []*dto.LabelPair +// labelPairSorter implements sort.Interface. It is used to sort a slice of +// dto.LabelPair pointers. +type labelPairSorter []*dto.LabelPair -func (s LabelPairSorter) Len() int { +func (s labelPairSorter) Len() int { return len(s) } -func (s LabelPairSorter) Swap(i, j int) { +func (s labelPairSorter) Swap(i, j int) { s[i], s[j] = s[j], s[i] } -func (s LabelPairSorter) Less(i, j int) bool { +func (s labelPairSorter) Less(i, j int) bool { return s[i].GetName() < s[j].GetName() } -type hashSorter []uint64 - -func (s hashSorter) Len() int { - return len(s) -} - -func (s hashSorter) Swap(i, j int) { - s[i], s[j] = s[j], s[i] -} - -func (s hashSorter) Less(i, j int) bool { - return s[i] < s[j] -} - type invalidMetric struct { desc *Desc err error @@ -164,3 +144,31 @@ func NewInvalidMetric(desc *Desc, err error) Metric { func (m *invalidMetric) Desc() *Desc { return m.desc } func (m *invalidMetric) Write(*dto.Metric) error { return m.err } + +type timestampedMetric struct { + Metric + t time.Time +} + +func (m timestampedMetric) Write(pb *dto.Metric) error { + e := m.Metric.Write(pb) + pb.TimestampMs = proto.Int64(m.t.Unix()*1000 + int64(m.t.Nanosecond()/1000000)) + return e +} + +// NewMetricWithTimestamp returns a new Metric wrapping the provided Metric in a +// way that it has an explicit timestamp set to the provided Time. This is only +// useful in rare cases as the timestamp of a Prometheus metric should usually +// be set by the Prometheus server during scraping. Exceptions include mirroring +// metrics with given timestamps from other metric +// sources. +// +// NewMetricWithTimestamp works best with MustNewConstMetric, +// MustNewConstHistogram, and MustNewConstSummary, see example. +// +// Currently, the exposition formats used by Prometheus are limited to +// millisecond resolution. Thus, the provided time will be rounded down to the +// next full millisecond value. +func NewMetricWithTimestamp(t time.Time, m Metric) Metric { + return timestampedMetric{Metric: m, t: t} +} diff --git a/vendor/github.com/prometheus/client_golang/prometheus/observer.go b/vendor/github.com/prometheus/client_golang/prometheus/observer.go new file mode 100644 index 0000000..5806cd0 --- /dev/null +++ b/vendor/github.com/prometheus/client_golang/prometheus/observer.go @@ -0,0 +1,52 @@ +// Copyright 2017 The Prometheus Authors +// Licensed under the Apache License, Version 2.0 (the "License"); +// you may not use this file except in compliance with the License. +// You may obtain a copy of the License at +// +// http://www.apache.org/licenses/LICENSE-2.0 +// +// Unless required by applicable law or agreed to in writing, software +// distributed under the License is distributed on an "AS IS" BASIS, +// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. +// See the License for the specific language governing permissions and +// limitations under the License. + +package prometheus + +// Observer is the interface that wraps the Observe method, which is used by +// Histogram and Summary to add observations. +type Observer interface { + Observe(float64) +} + +// The ObserverFunc type is an adapter to allow the use of ordinary +// functions as Observers. If f is a function with the appropriate +// signature, ObserverFunc(f) is an Observer that calls f. +// +// This adapter is usually used in connection with the Timer type, and there are +// two general use cases: +// +// The most common one is to use a Gauge as the Observer for a Timer. +// See the "Gauge" Timer example. +// +// The more advanced use case is to create a function that dynamically decides +// which Observer to use for observing the duration. See the "Complex" Timer +// example. +type ObserverFunc func(float64) + +// Observe calls f(value). It implements Observer. +func (f ObserverFunc) Observe(value float64) { + f(value) +} + +// ObserverVec is an interface implemented by `HistogramVec` and `SummaryVec`. +type ObserverVec interface { + GetMetricWith(Labels) (Observer, error) + GetMetricWithLabelValues(lvs ...string) (Observer, error) + With(Labels) Observer + WithLabelValues(...string) Observer + CurryWith(Labels) (ObserverVec, error) + MustCurryWith(Labels) ObserverVec + + Collector +} diff --git a/vendor/github.com/prometheus/client_golang/prometheus/process_collector.go b/vendor/github.com/prometheus/client_golang/prometheus/process_collector.go index e31e62e..55176d5 100644 --- a/vendor/github.com/prometheus/client_golang/prometheus/process_collector.go +++ b/vendor/github.com/prometheus/client_golang/prometheus/process_collector.go @@ -13,89 +13,139 @@ package prometheus -import "github.com/prometheus/procfs" +import ( + "errors" + "os" + + "github.com/prometheus/procfs" +) type processCollector struct { - pid int collectFn func(chan<- Metric) pidFn func() (int, error) - cpuTotal Counter - openFDs, maxFDs Gauge - vsize, rss Gauge - startTime Gauge + reportErrors bool + cpuTotal *Desc + openFDs, maxFDs *Desc + vsize, maxVsize *Desc + rss *Desc + startTime *Desc +} + +// ProcessCollectorOpts defines the behavior of a process metrics collector +// created with NewProcessCollector. +type ProcessCollectorOpts struct { + // PidFn returns the PID of the process the collector collects metrics + // for. It is called upon each collection. By default, the PID of the + // current process is used, as determined on construction time by + // calling os.Getpid(). + PidFn func() (int, error) + // If non-empty, each of the collected metrics is prefixed by the + // provided string and an underscore ("_"). + Namespace string + // If true, any error encountered during collection is reported as an + // invalid metric (see NewInvalidMetric). Otherwise, errors are ignored + // and the collected metrics will be incomplete. (Possibly, no metrics + // will be collected at all.) While that's usually not desired, it is + // appropriate for the common "mix-in" of process metrics, where process + // metrics are nice to have, but failing to collect them should not + // disrupt the collection of the remaining metrics. + ReportErrors bool } // NewProcessCollector returns a collector which exports the current state of -// process metrics including cpu, memory and file descriptor usage as well as -// the process start time for the given process id under the given namespace. -func NewProcessCollector(pid int, namespace string) Collector { - return NewProcessCollectorPIDFn( - func() (int, error) { return pid, nil }, - namespace, - ) -} +// process metrics including CPU, memory and file descriptor usage as well as +// the process start time. The detailed behavior is defined by the provided +// ProcessCollectorOpts. The zero value of ProcessCollectorOpts creates a +// collector for the current process with an empty namespace string and no error +// reporting. +// +// Currently, the collector depends on a Linux-style proc filesystem and +// therefore only exports metrics for Linux. +// +// Note: An older version of this function had the following signature: +// +// NewProcessCollector(pid int, namespace string) Collector +// +// Most commonly, it was called as +// +// NewProcessCollector(os.Getpid(), "") +// +// The following call of the current version is equivalent to the above: +// +// NewProcessCollector(ProcessCollectorOpts{}) +func NewProcessCollector(opts ProcessCollectorOpts) Collector { + ns := "" + if len(opts.Namespace) > 0 { + ns = opts.Namespace + "_" + } -// NewProcessCollectorPIDFn returns a collector which exports the current state -// of process metrics including cpu, memory and file descriptor usage as well -// as the process start time under the given namespace. The given pidFn is -// called on each collect and is used to determine the process to export -// metrics for. -func NewProcessCollectorPIDFn( - pidFn func() (int, error), - namespace string, -) Collector { - c := processCollector{ - pidFn: pidFn, - collectFn: func(chan<- Metric) {}, + c := &processCollector{ + reportErrors: opts.ReportErrors, + cpuTotal: NewDesc( + ns+"process_cpu_seconds_total", + "Total user and system CPU time spent in seconds.", + nil, nil, + ), + openFDs: NewDesc( + ns+"process_open_fds", + "Number of open file descriptors.", + nil, nil, + ), + maxFDs: NewDesc( + ns+"process_max_fds", + "Maximum number of open file descriptors.", + nil, nil, + ), + vsize: NewDesc( + ns+"process_virtual_memory_bytes", + "Virtual memory size in bytes.", + nil, nil, + ), + maxVsize: NewDesc( + ns+"process_virtual_memory_max_bytes", + "Maximum amount of virtual memory available in bytes.", + nil, nil, + ), + rss: NewDesc( + ns+"process_resident_memory_bytes", + "Resident memory size in bytes.", + nil, nil, + ), + startTime: NewDesc( + ns+"process_start_time_seconds", + "Start time of the process since unix epoch in seconds.", + nil, nil, + ), + } - cpuTotal: NewCounter(CounterOpts{ - Namespace: namespace, - Name: "process_cpu_seconds_total", - Help: "Total user and system CPU time spent in seconds.", - }), - openFDs: NewGauge(GaugeOpts{ - Namespace: namespace, - Name: "process_open_fds", - Help: "Number of open file descriptors.", - }), - maxFDs: NewGauge(GaugeOpts{ - Namespace: namespace, - Name: "process_max_fds", - Help: "Maximum number of open file descriptors.", - }), - vsize: NewGauge(GaugeOpts{ - Namespace: namespace, - Name: "process_virtual_memory_bytes", - Help: "Virtual memory size in bytes.", - }), - rss: NewGauge(GaugeOpts{ - Namespace: namespace, - Name: "process_resident_memory_bytes", - Help: "Resident memory size in bytes.", - }), - startTime: NewGauge(GaugeOpts{ - Namespace: namespace, - Name: "process_start_time_seconds", - Help: "Start time of the process since unix epoch in seconds.", - }), + if opts.PidFn == nil { + pid := os.Getpid() + c.pidFn = func() (int, error) { return pid, nil } + } else { + c.pidFn = opts.PidFn } // Set up process metric collection if supported by the runtime. if _, err := procfs.NewStat(); err == nil { c.collectFn = c.processCollect + } else { + c.collectFn = func(ch chan<- Metric) { + c.reportError(ch, nil, errors.New("process metrics not supported on this platform")) + } } - return &c + return c } // Describe returns all descriptions of the collector. func (c *processCollector) Describe(ch chan<- *Desc) { - ch <- c.cpuTotal.Desc() - ch <- c.openFDs.Desc() - ch <- c.maxFDs.Desc() - ch <- c.vsize.Desc() - ch <- c.rss.Desc() - ch <- c.startTime.Desc() + ch <- c.cpuTotal + ch <- c.openFDs + ch <- c.maxFDs + ch <- c.vsize + ch <- c.maxVsize + ch <- c.rss + ch <- c.startTime } // Collect returns the current state of all metrics of the collector. @@ -103,40 +153,52 @@ func (c *processCollector) Collect(ch chan<- Metric) { c.collectFn(ch) } -// TODO(ts): Bring back error reporting by reverting 7faf9e7 as soon as the -// client allows users to configure the error behavior. func (c *processCollector) processCollect(ch chan<- Metric) { pid, err := c.pidFn() if err != nil { + c.reportError(ch, nil, err) return } p, err := procfs.NewProc(pid) if err != nil { + c.reportError(ch, nil, err) return } if stat, err := p.NewStat(); err == nil { - c.cpuTotal.Set(stat.CPUTime()) - ch <- c.cpuTotal - c.vsize.Set(float64(stat.VirtualMemory())) - ch <- c.vsize - c.rss.Set(float64(stat.ResidentMemory())) - ch <- c.rss - + ch <- MustNewConstMetric(c.cpuTotal, CounterValue, stat.CPUTime()) + ch <- MustNewConstMetric(c.vsize, GaugeValue, float64(stat.VirtualMemory())) + ch <- MustNewConstMetric(c.rss, GaugeValue, float64(stat.ResidentMemory())) if startTime, err := stat.StartTime(); err == nil { - c.startTime.Set(startTime) - ch <- c.startTime + ch <- MustNewConstMetric(c.startTime, GaugeValue, startTime) + } else { + c.reportError(ch, c.startTime, err) } + } else { + c.reportError(ch, nil, err) } if fds, err := p.FileDescriptorsLen(); err == nil { - c.openFDs.Set(float64(fds)) - ch <- c.openFDs + ch <- MustNewConstMetric(c.openFDs, GaugeValue, float64(fds)) + } else { + c.reportError(ch, c.openFDs, err) } if limits, err := p.NewLimits(); err == nil { - c.maxFDs.Set(float64(limits.OpenFiles)) - ch <- c.maxFDs + ch <- MustNewConstMetric(c.maxFDs, GaugeValue, float64(limits.OpenFiles)) + ch <- MustNewConstMetric(c.maxVsize, GaugeValue, float64(limits.AddressSpace)) + } else { + c.reportError(ch, nil, err) } } + +func (c *processCollector) reportError(ch chan<- Metric, desc *Desc, err error) { + if !c.reportErrors { + return + } + if desc == nil { + desc = NewInvalidDesc(err) + } + ch <- NewInvalidMetric(desc, err) +} diff --git a/vendor/github.com/prometheus/client_golang/prometheus/registry.go b/vendor/github.com/prometheus/client_golang/prometheus/registry.go index 32a3986..b5e70b9 100644 --- a/vendor/github.com/prometheus/client_golang/prometheus/registry.go +++ b/vendor/github.com/prometheus/client_golang/prometheus/registry.go @@ -15,15 +15,22 @@ package prometheus import ( "bytes" - "errors" "fmt" + "io/ioutil" "os" + "path/filepath" + "runtime" "sort" + "strings" "sync" + "unicode/utf8" "github.com/golang/protobuf/proto" + "github.com/prometheus/common/expfmt" dto "github.com/prometheus/client_model/go" + + "github.com/prometheus/client_golang/prometheus/internal" ) const ( @@ -35,13 +42,14 @@ const ( // DefaultRegisterer and DefaultGatherer are the implementations of the // Registerer and Gatherer interface a number of convenience functions in this // package act on. Initially, both variables point to the same Registry, which -// has a process collector (see NewProcessCollector) and a Go collector (see -// NewGoCollector) already registered. This approach to keep default instances -// as global state mirrors the approach of other packages in the Go standard -// library. Note that there are caveats. Change the variables with caution and -// only if you understand the consequences. Users who want to avoid global state -// altogether should not use the convenience function and act on custom -// instances instead. +// has a process collector (currently on Linux only, see NewProcessCollector) +// and a Go collector (see NewGoCollector, in particular the note about +// stop-the-world implication with Go versions older than 1.9) already +// registered. This approach to keep default instances as global state mirrors +// the approach of other packages in the Go standard library. Note that there +// are caveats. Change the variables with caution and only if you understand the +// consequences. Users who want to avoid global state altogether should not use +// the convenience functions and act on custom instances instead. var ( defaultRegistry = NewRegistry() DefaultRegisterer Registerer = defaultRegistry @@ -49,7 +57,7 @@ var ( ) func init() { - MustRegister(NewProcessCollector(os.Getpid(), "")) + MustRegister(NewProcessCollector(ProcessCollectorOpts{})) MustRegister(NewGoCollector()) } @@ -65,7 +73,8 @@ func NewRegistry() *Registry { // NewPedanticRegistry returns a registry that checks during collection if each // collected Metric is consistent with its reported Desc, and if the Desc has -// actually been registered with the registry. +// actually been registered with the registry. Unchecked Collectors (those whose +// Describe methed does not yield any descriptors) are excluded from the check. // // Usually, a Registry will be happy as long as the union of all collected // Metrics is consistent and valid even if some metrics are not consistent with @@ -80,7 +89,7 @@ func NewPedanticRegistry() *Registry { // Registerer is the interface for the part of a registry in charge of // registering and unregistering. Users of custom registries should use -// Registerer as type for registration purposes (rather then the Registry type +// Registerer as type for registration purposes (rather than the Registry type // directly). In that way, they are free to use custom Registerer implementation // (e.g. for testing purposes). type Registerer interface { @@ -95,8 +104,13 @@ type Registerer interface { // returned error is an instance of AlreadyRegisteredError, which // contains the previously registered Collector. // - // It is in general not safe to register the same Collector multiple - // times concurrently. + // A Collector whose Describe method does not yield any Desc is treated + // as unchecked. Registration will always succeed. No check for + // re-registering (see previous paragraph) is performed. Thus, the + // caller is responsible for not double-registering the same unchecked + // Collector, and for providing a Collector that will not cause + // inconsistent metrics on collection. (This would lead to scrape + // errors.) Register(Collector) error // MustRegister works like Register but registers any number of // Collectors and panics upon the first registration that causes an @@ -105,7 +119,9 @@ type Registerer interface { // Unregister unregisters the Collector that equals the Collector passed // in as an argument. (Two Collectors are considered equal if their // Describe method yields the same set of descriptors.) The function - // returns whether a Collector was unregistered. + // returns whether a Collector was unregistered. Note that an unchecked + // Collector cannot be unregistered (as its Describe method does not + // yield any descriptor). // // Note that even after unregistering, it will not be possible to // register a new Collector that is inconsistent with the unregistered @@ -123,15 +139,23 @@ type Registerer interface { type Gatherer interface { // Gather calls the Collect method of the registered Collectors and then // gathers the collected metrics into a lexicographically sorted slice - // of MetricFamily protobufs. Even if an error occurs, Gather attempts - // to gather as many metrics as possible. Hence, if a non-nil error is - // returned, the returned MetricFamily slice could be nil (in case of a - // fatal error that prevented any meaningful metric collection) or - // contain a number of MetricFamily protobufs, some of which might be - // incomplete, and some might be missing altogether. The returned error - // (which might be a MultiError) explains the details. In scenarios - // where complete collection is critical, the returned MetricFamily - // protobufs should be disregarded if the returned error is non-nil. + // of uniquely named MetricFamily protobufs. Gather ensures that the + // returned slice is valid and self-consistent so that it can be used + // for valid exposition. As an exception to the strict consistency + // requirements described for metric.Desc, Gather will tolerate + // different sets of label names for metrics of the same metric family. + // + // Even if an error occurs, Gather attempts to gather as many metrics as + // possible. Hence, if a non-nil error is returned, the returned + // MetricFamily slice could be nil (in case of a fatal error that + // prevented any meaningful metric collection) or contain a number of + // MetricFamily protobufs, some of which might be incomplete, and some + // might be missing altogether. The returned error (which might be a + // MultiError) explains the details. Note that this is mostly useful for + // debugging purposes. If the gathered protobufs are to be used for + // exposition in actual monitoring, it is almost always better to not + // expose an incomplete result and instead disregard the returned + // MetricFamily protobufs in case the returned error is non-nil. Gather() ([]*dto.MetricFamily, error) } @@ -152,38 +176,6 @@ func MustRegister(cs ...Collector) { DefaultRegisterer.MustRegister(cs...) } -// RegisterOrGet registers the provided Collector with the DefaultRegisterer and -// returns the Collector, unless an equal Collector was registered before, in -// which case that Collector is returned. -// -// Deprecated: RegisterOrGet is merely a convenience function for the -// implementation as described in the documentation for -// AlreadyRegisteredError. As the use case is relatively rare, this function -// will be removed in a future version of this package to clean up the -// namespace. -func RegisterOrGet(c Collector) (Collector, error) { - if err := Register(c); err != nil { - if are, ok := err.(AlreadyRegisteredError); ok { - return are.ExistingCollector, nil - } - return nil, err - } - return c, nil -} - -// MustRegisterOrGet behaves like RegisterOrGet but panics instead of returning -// an error. -// -// Deprecated: This is deprecated for the same reason RegisterOrGet is. See -// there for details. -func MustRegisterOrGet(c Collector) Collector { - c, err := RegisterOrGet(c) - if err != nil { - panic(err) - } - return c -} - // Unregister removes the registration of the provided Collector from the // DefaultRegisterer. // @@ -201,25 +193,6 @@ func (gf GathererFunc) Gather() ([]*dto.MetricFamily, error) { return gf() } -// SetMetricFamilyInjectionHook replaces the DefaultGatherer with one that -// gathers from the previous DefaultGatherers but then merges the MetricFamily -// protobufs returned from the provided hook function with the MetricFamily -// protobufs returned from the original DefaultGatherer. -// -// Deprecated: This function manipulates the DefaultGatherer variable. Consider -// the implications, i.e. don't do this concurrently with any uses of the -// DefaultGatherer. In the rare cases where you need to inject MetricFamily -// protobufs directly, it is recommended to use a custom Registry and combine it -// with a custom Gatherer using the Gatherers type (see -// there). SetMetricFamilyInjectionHook only exists for compatibility reasons -// with previous versions of this package. -func SetMetricFamilyInjectionHook(hook func() []*dto.MetricFamily) { - DefaultGatherer = Gatherers{ - DefaultGatherer, - GathererFunc(func() ([]*dto.MetricFamily, error) { return hook(), nil }), - } -} - // AlreadyRegisteredError is returned by the Register method if the Collector to // be registered has already been registered before, or a different Collector // that collects the same metrics has been registered before. Registration fails @@ -252,6 +225,13 @@ func (errs MultiError) Error() string { return buf.String() } +// Append appends the provided error if it is not nil. +func (errs *MultiError) Append(err error) { + if err != nil { + *errs = append(*errs, err) + } +} + // MaybeUnwrap returns nil if len(errs) is 0. It returns the first and only // contained error as error if len(errs is 1). In all other cases, it returns // the MultiError directly. This is helpful for returning a MultiError in a way @@ -276,6 +256,7 @@ type Registry struct { collectorsByID map[uint64]Collector // ID is a hash of the descIDs. descIDs map[uint64]struct{} dimHashesByName map[string]uint64 + uncheckedCollectors []Collector pedanticChecksEnabled bool } @@ -293,8 +274,13 @@ func (r *Registry) Register(c Collector) error { close(descChan) }() r.mtx.Lock() - defer r.mtx.Unlock() - // Coduct various tests... + defer func() { + // Drain channel in case of premature return to not leak a goroutine. + for range descChan { + } + r.mtx.Unlock() + }() + // Conduct various tests... for desc := range descChan { // Is the descriptor valid at all? @@ -333,9 +319,10 @@ func (r *Registry) Register(c Collector) error { } } } - // Did anything happen at all? + // A Collector yielding no Desc at all is considered unchecked. if len(newDescIDs) == 0 { - return errors.New("collector has no descriptors") + r.uncheckedCollectors = append(r.uncheckedCollectors, c) + return nil } if existing, exists := r.collectorsByID[collectorID]; exists { return AlreadyRegisteredError{ @@ -409,31 +396,25 @@ func (r *Registry) MustRegister(cs ...Collector) { // Gather implements Gatherer. func (r *Registry) Gather() ([]*dto.MetricFamily, error) { var ( - metricChan = make(chan Metric, capMetricChan) - metricHashes = map[uint64]struct{}{} - dimHashes = map[string]uint64{} - wg sync.WaitGroup - errs MultiError // The collected errors to return in the end. - registeredDescIDs map[uint64]struct{} // Only used for pedantic checks + checkedMetricChan = make(chan Metric, capMetricChan) + uncheckedMetricChan = make(chan Metric, capMetricChan) + metricHashes = map[uint64]struct{}{} + wg sync.WaitGroup + errs MultiError // The collected errors to return in the end. + registeredDescIDs map[uint64]struct{} // Only used for pedantic checks ) r.mtx.RLock() + goroutineBudget := len(r.collectorsByID) + len(r.uncheckedCollectors) metricFamiliesByName := make(map[string]*dto.MetricFamily, len(r.dimHashesByName)) - - // Scatter. - // (Collectors could be complex and slow, so we call them all at once.) - wg.Add(len(r.collectorsByID)) - go func() { - wg.Wait() - close(metricChan) - }() + checkedCollectors := make(chan Collector, len(r.collectorsByID)) + uncheckedCollectors := make(chan Collector, len(r.uncheckedCollectors)) for _, collector := range r.collectorsByID { - go func(collector Collector) { - defer wg.Done() - collector.Collect(metricChan) - }(collector) + checkedCollectors <- collector + } + for _, collector := range r.uncheckedCollectors { + uncheckedCollectors <- collector } - // In case pedantic checks are enabled, we have to copy the map before // giving up the RLock. if r.pedanticChecksEnabled { @@ -442,127 +423,258 @@ func (r *Registry) Gather() ([]*dto.MetricFamily, error) { registeredDescIDs[id] = struct{}{} } } - r.mtx.RUnlock() - // Drain metricChan in case of premature return. + wg.Add(goroutineBudget) + + collectWorker := func() { + for { + select { + case collector := <-checkedCollectors: + collector.Collect(checkedMetricChan) + case collector := <-uncheckedCollectors: + collector.Collect(uncheckedMetricChan) + default: + return + } + wg.Done() + } + } + + // Start the first worker now to make sure at least one is running. + go collectWorker() + goroutineBudget-- + + // Close checkedMetricChan and uncheckedMetricChan once all collectors + // are collected. + go func() { + wg.Wait() + close(checkedMetricChan) + close(uncheckedMetricChan) + }() + + // Drain checkedMetricChan and uncheckedMetricChan in case of premature return. defer func() { - for _ = range metricChan { + if checkedMetricChan != nil { + for range checkedMetricChan { + } + } + if uncheckedMetricChan != nil { + for range uncheckedMetricChan { + } } }() - // Gather. - for metric := range metricChan { - // This could be done concurrently, too, but it required locking - // of metricFamiliesByName (and of metricHashes if checks are - // enabled). Most likely not worth it. - desc := metric.Desc() - dtoMetric := &dto.Metric{} - if err := metric.Write(dtoMetric); err != nil { - errs = append(errs, fmt.Errorf( - "error collecting metric %v: %s", desc, err, + // Copy the channel references so we can nil them out later to remove + // them from the select statements below. + cmc := checkedMetricChan + umc := uncheckedMetricChan + + for { + select { + case metric, ok := <-cmc: + if !ok { + cmc = nil + break + } + errs.Append(processMetric( + metric, metricFamiliesByName, + metricHashes, + registeredDescIDs, )) - continue + case metric, ok := <-umc: + if !ok { + umc = nil + break + } + errs.Append(processMetric( + metric, metricFamiliesByName, + metricHashes, + nil, + )) + default: + if goroutineBudget <= 0 || len(checkedCollectors)+len(uncheckedCollectors) == 0 { + // All collectors are already being worked on or + // we have already as many goroutines started as + // there are collectors. Do the same as above, + // just without the default. + select { + case metric, ok := <-cmc: + if !ok { + cmc = nil + break + } + errs.Append(processMetric( + metric, metricFamiliesByName, + metricHashes, + registeredDescIDs, + )) + case metric, ok := <-umc: + if !ok { + umc = nil + break + } + errs.Append(processMetric( + metric, metricFamiliesByName, + metricHashes, + nil, + )) + } + break + } + // Start more workers. + go collectWorker() + goroutineBudget-- + runtime.Gosched() } - metricFamily, ok := metricFamiliesByName[desc.fqName] - if ok { - if metricFamily.GetHelp() != desc.help { - errs = append(errs, fmt.Errorf( - "collected metric %s %s has help %q but should have %q", - desc.fqName, dtoMetric, desc.help, metricFamily.GetHelp(), - )) - continue - } - // TODO(beorn7): Simplify switch once Desc has type. - switch metricFamily.GetType() { - case dto.MetricType_COUNTER: - if dtoMetric.Counter == nil { - errs = append(errs, fmt.Errorf( - "collected metric %s %s should be a Counter", - desc.fqName, dtoMetric, - )) - continue - } - case dto.MetricType_GAUGE: - if dtoMetric.Gauge == nil { - errs = append(errs, fmt.Errorf( - "collected metric %s %s should be a Gauge", - desc.fqName, dtoMetric, - )) - continue - } - case dto.MetricType_SUMMARY: - if dtoMetric.Summary == nil { - errs = append(errs, fmt.Errorf( - "collected metric %s %s should be a Summary", - desc.fqName, dtoMetric, - )) - continue - } - case dto.MetricType_UNTYPED: - if dtoMetric.Untyped == nil { - errs = append(errs, fmt.Errorf( - "collected metric %s %s should be Untyped", - desc.fqName, dtoMetric, - )) - continue - } - case dto.MetricType_HISTOGRAM: - if dtoMetric.Histogram == nil { - errs = append(errs, fmt.Errorf( - "collected metric %s %s should be a Histogram", - desc.fqName, dtoMetric, - )) - continue - } - default: - panic("encountered MetricFamily with invalid type") - } - } else { - metricFamily = &dto.MetricFamily{} - metricFamily.Name = proto.String(desc.fqName) - metricFamily.Help = proto.String(desc.help) - // TODO(beorn7): Simplify switch once Desc has type. - switch { - case dtoMetric.Gauge != nil: - metricFamily.Type = dto.MetricType_GAUGE.Enum() - case dtoMetric.Counter != nil: - metricFamily.Type = dto.MetricType_COUNTER.Enum() - case dtoMetric.Summary != nil: - metricFamily.Type = dto.MetricType_SUMMARY.Enum() - case dtoMetric.Untyped != nil: - metricFamily.Type = dto.MetricType_UNTYPED.Enum() - case dtoMetric.Histogram != nil: - metricFamily.Type = dto.MetricType_HISTOGRAM.Enum() - default: - errs = append(errs, fmt.Errorf( - "empty metric collected: %s", dtoMetric, - )) - continue - } - metricFamiliesByName[desc.fqName] = metricFamily + // Once both checkedMetricChan and uncheckdMetricChan are closed + // and drained, the contraption above will nil out cmc and umc, + // and then we can leave the collect loop here. + if cmc == nil && umc == nil { + break } - if err := checkMetricConsistency(metricFamily, dtoMetric, metricHashes, dimHashes); err != nil { - errs = append(errs, err) - continue - } - if r.pedanticChecksEnabled { - // Is the desc registered at all? - if _, exist := registeredDescIDs[desc.id]; !exist { - errs = append(errs, fmt.Errorf( - "collected metric %s %s with unregistered descriptor %s", - metricFamily.GetName(), dtoMetric, desc, - )) - continue - } - if err := checkDescConsistency(metricFamily, dtoMetric, desc); err != nil { - errs = append(errs, err) - continue - } - } - metricFamily.Metric = append(metricFamily.Metric, dtoMetric) } - return normalizeMetricFamilies(metricFamiliesByName), errs.MaybeUnwrap() + return internal.NormalizeMetricFamilies(metricFamiliesByName), errs.MaybeUnwrap() +} + +// WriteToTextfile calls Gather on the provided Gatherer, encodes the result in the +// Prometheus text format, and writes it to a temporary file. Upon success, the +// temporary file is renamed to the provided filename. +// +// This is intended for use with the textfile collector of the node exporter. +// Note that the node exporter expects the filename to be suffixed with ".prom". +func WriteToTextfile(filename string, g Gatherer) error { + tmp, err := ioutil.TempFile(filepath.Dir(filename), filepath.Base(filename)) + if err != nil { + return err + } + defer os.Remove(tmp.Name()) + + mfs, err := g.Gather() + if err != nil { + return err + } + for _, mf := range mfs { + if _, err := expfmt.MetricFamilyToText(tmp, mf); err != nil { + return err + } + } + if err := tmp.Close(); err != nil { + return err + } + + if err := os.Chmod(tmp.Name(), 0644); err != nil { + return err + } + return os.Rename(tmp.Name(), filename) +} + +// processMetric is an internal helper method only used by the Gather method. +func processMetric( + metric Metric, + metricFamiliesByName map[string]*dto.MetricFamily, + metricHashes map[uint64]struct{}, + registeredDescIDs map[uint64]struct{}, +) error { + desc := metric.Desc() + // Wrapped metrics collected by an unchecked Collector can have an + // invalid Desc. + if desc.err != nil { + return desc.err + } + dtoMetric := &dto.Metric{} + if err := metric.Write(dtoMetric); err != nil { + return fmt.Errorf("error collecting metric %v: %s", desc, err) + } + metricFamily, ok := metricFamiliesByName[desc.fqName] + if ok { // Existing name. + if metricFamily.GetHelp() != desc.help { + return fmt.Errorf( + "collected metric %s %s has help %q but should have %q", + desc.fqName, dtoMetric, desc.help, metricFamily.GetHelp(), + ) + } + // TODO(beorn7): Simplify switch once Desc has type. + switch metricFamily.GetType() { + case dto.MetricType_COUNTER: + if dtoMetric.Counter == nil { + return fmt.Errorf( + "collected metric %s %s should be a Counter", + desc.fqName, dtoMetric, + ) + } + case dto.MetricType_GAUGE: + if dtoMetric.Gauge == nil { + return fmt.Errorf( + "collected metric %s %s should be a Gauge", + desc.fqName, dtoMetric, + ) + } + case dto.MetricType_SUMMARY: + if dtoMetric.Summary == nil { + return fmt.Errorf( + "collected metric %s %s should be a Summary", + desc.fqName, dtoMetric, + ) + } + case dto.MetricType_UNTYPED: + if dtoMetric.Untyped == nil { + return fmt.Errorf( + "collected metric %s %s should be Untyped", + desc.fqName, dtoMetric, + ) + } + case dto.MetricType_HISTOGRAM: + if dtoMetric.Histogram == nil { + return fmt.Errorf( + "collected metric %s %s should be a Histogram", + desc.fqName, dtoMetric, + ) + } + default: + panic("encountered MetricFamily with invalid type") + } + } else { // New name. + metricFamily = &dto.MetricFamily{} + metricFamily.Name = proto.String(desc.fqName) + metricFamily.Help = proto.String(desc.help) + // TODO(beorn7): Simplify switch once Desc has type. + switch { + case dtoMetric.Gauge != nil: + metricFamily.Type = dto.MetricType_GAUGE.Enum() + case dtoMetric.Counter != nil: + metricFamily.Type = dto.MetricType_COUNTER.Enum() + case dtoMetric.Summary != nil: + metricFamily.Type = dto.MetricType_SUMMARY.Enum() + case dtoMetric.Untyped != nil: + metricFamily.Type = dto.MetricType_UNTYPED.Enum() + case dtoMetric.Histogram != nil: + metricFamily.Type = dto.MetricType_HISTOGRAM.Enum() + default: + return fmt.Errorf("empty metric collected: %s", dtoMetric) + } + if err := checkSuffixCollisions(metricFamily, metricFamiliesByName); err != nil { + return err + } + metricFamiliesByName[desc.fqName] = metricFamily + } + if err := checkMetricConsistency(metricFamily, dtoMetric, metricHashes); err != nil { + return err + } + if registeredDescIDs != nil { + // Is the desc registered at all? + if _, exist := registeredDescIDs[desc.id]; !exist { + return fmt.Errorf( + "collected metric %s %s with unregistered descriptor %s", + metricFamily.GetName(), dtoMetric, desc, + ) + } + if err := checkDescConsistency(metricFamily, dtoMetric, desc); err != nil { + return err + } + } + metricFamily.Metric = append(metricFamily.Metric, dtoMetric) + return nil } // Gatherers is a slice of Gatherer instances that implements the Gatherer @@ -588,7 +700,6 @@ func (gs Gatherers) Gather() ([]*dto.MetricFamily, error) { var ( metricFamiliesByName = map[string]*dto.MetricFamily{} metricHashes = map[uint64]struct{}{} - dimHashes = map[string]uint64{} errs MultiError // The collected errors to return in the end. ) @@ -625,10 +736,14 @@ func (gs Gatherers) Gather() ([]*dto.MetricFamily, error) { existingMF.Name = mf.Name existingMF.Help = mf.Help existingMF.Type = mf.Type + if err := checkSuffixCollisions(existingMF, metricFamiliesByName); err != nil { + errs = append(errs, err) + continue + } metricFamiliesByName[mf.GetName()] = existingMF } for _, m := range mf.Metric { - if err := checkMetricConsistency(existingMF, m, metricHashes, dimHashes); err != nil { + if err := checkMetricConsistency(existingMF, m, metricHashes); err != nil { errs = append(errs, err) continue } @@ -636,88 +751,80 @@ func (gs Gatherers) Gather() ([]*dto.MetricFamily, error) { } } } - return normalizeMetricFamilies(metricFamiliesByName), errs.MaybeUnwrap() + return internal.NormalizeMetricFamilies(metricFamiliesByName), errs.MaybeUnwrap() } -// metricSorter is a sortable slice of *dto.Metric. -type metricSorter []*dto.Metric - -func (s metricSorter) Len() int { - return len(s) -} - -func (s metricSorter) Swap(i, j int) { - s[i], s[j] = s[j], s[i] -} - -func (s metricSorter) Less(i, j int) bool { - if len(s[i].Label) != len(s[j].Label) { - // This should not happen. The metrics are - // inconsistent. However, we have to deal with the fact, as - // people might use custom collectors or metric family injection - // to create inconsistent metrics. So let's simply compare the - // number of labels in this case. That will still yield - // reproducible sorting. - return len(s[i].Label) < len(s[j].Label) +// checkSuffixCollisions checks for collisions with the “magic” suffixes the +// Prometheus text format and the internal metric representation of the +// Prometheus server add while flattening Summaries and Histograms. +func checkSuffixCollisions(mf *dto.MetricFamily, mfs map[string]*dto.MetricFamily) error { + var ( + newName = mf.GetName() + newType = mf.GetType() + newNameWithoutSuffix = "" + ) + switch { + case strings.HasSuffix(newName, "_count"): + newNameWithoutSuffix = newName[:len(newName)-6] + case strings.HasSuffix(newName, "_sum"): + newNameWithoutSuffix = newName[:len(newName)-4] + case strings.HasSuffix(newName, "_bucket"): + newNameWithoutSuffix = newName[:len(newName)-7] } - for n, lp := range s[i].Label { - vi := lp.GetValue() - vj := s[j].Label[n].GetValue() - if vi != vj { - return vi < vj + if newNameWithoutSuffix != "" { + if existingMF, ok := mfs[newNameWithoutSuffix]; ok { + switch existingMF.GetType() { + case dto.MetricType_SUMMARY: + if !strings.HasSuffix(newName, "_bucket") { + return fmt.Errorf( + "collected metric named %q collides with previously collected summary named %q", + newName, newNameWithoutSuffix, + ) + } + case dto.MetricType_HISTOGRAM: + return fmt.Errorf( + "collected metric named %q collides with previously collected histogram named %q", + newName, newNameWithoutSuffix, + ) + } } } - - // We should never arrive here. Multiple metrics with the same - // label set in the same scrape will lead to undefined ingestion - // behavior. However, as above, we have to provide stable sorting - // here, even for inconsistent metrics. So sort equal metrics - // by their timestamp, with missing timestamps (implying "now") - // coming last. - if s[i].TimestampMs == nil { - return false - } - if s[j].TimestampMs == nil { - return true - } - return s[i].GetTimestampMs() < s[j].GetTimestampMs() -} - -// normalizeMetricFamilies returns a MetricFamily slice whith empty -// MetricFamilies pruned and the remaining MetricFamilies sorted by name within -// the slice, with the contained Metrics sorted within each MetricFamily. -func normalizeMetricFamilies(metricFamiliesByName map[string]*dto.MetricFamily) []*dto.MetricFamily { - for _, mf := range metricFamiliesByName { - sort.Sort(metricSorter(mf.Metric)) - } - names := make([]string, 0, len(metricFamiliesByName)) - for name, mf := range metricFamiliesByName { - if len(mf.Metric) > 0 { - names = append(names, name) + if newType == dto.MetricType_SUMMARY || newType == dto.MetricType_HISTOGRAM { + if _, ok := mfs[newName+"_count"]; ok { + return fmt.Errorf( + "collected histogram or summary named %q collides with previously collected metric named %q", + newName, newName+"_count", + ) + } + if _, ok := mfs[newName+"_sum"]; ok { + return fmt.Errorf( + "collected histogram or summary named %q collides with previously collected metric named %q", + newName, newName+"_sum", + ) } } - sort.Strings(names) - result := make([]*dto.MetricFamily, 0, len(names)) - for _, name := range names { - result = append(result, metricFamiliesByName[name]) + if newType == dto.MetricType_HISTOGRAM { + if _, ok := mfs[newName+"_bucket"]; ok { + return fmt.Errorf( + "collected histogram named %q collides with previously collected metric named %q", + newName, newName+"_bucket", + ) + } } - return result + return nil } // checkMetricConsistency checks if the provided Metric is consistent with the -// provided MetricFamily. It also hashed the Metric labels and the MetricFamily -// name. If the resulting hash is alread in the provided metricHashes, an error -// is returned. If not, it is added to metricHashes. The provided dimHashes maps -// MetricFamily names to their dimHash (hashed sorted label names). If dimHashes -// doesn't yet contain a hash for the provided MetricFamily, it is -// added. Otherwise, an error is returned if the existing dimHashes in not equal -// the calculated dimHash. +// provided MetricFamily. It also hashes the Metric labels and the MetricFamily +// name. If the resulting hash is already in the provided metricHashes, an error +// is returned. If not, it is added to metricHashes. func checkMetricConsistency( metricFamily *dto.MetricFamily, dtoMetric *dto.Metric, metricHashes map[uint64]struct{}, - dimHashes map[string]uint64, ) error { + name := metricFamily.GetName() + // Type consistency with metric family. if metricFamily.GetType() == dto.MetricType_GAUGE && dtoMetric.Gauge == nil || metricFamily.GetType() == dto.MetricType_COUNTER && dtoMetric.Counter == nil || @@ -725,41 +832,65 @@ func checkMetricConsistency( metricFamily.GetType() == dto.MetricType_HISTOGRAM && dtoMetric.Histogram == nil || metricFamily.GetType() == dto.MetricType_UNTYPED && dtoMetric.Untyped == nil { return fmt.Errorf( - "collected metric %s %s is not a %s", - metricFamily.GetName(), dtoMetric, metricFamily.GetType(), + "collected metric %q { %s} is not a %s", + name, dtoMetric, metricFamily.GetType(), ) } - // Is the metric unique (i.e. no other metric with the same name and the same label values)? + previousLabelName := "" + for _, labelPair := range dtoMetric.GetLabel() { + labelName := labelPair.GetName() + if labelName == previousLabelName { + return fmt.Errorf( + "collected metric %q { %s} has two or more labels with the same name: %s", + name, dtoMetric, labelName, + ) + } + if !checkLabelName(labelName) { + return fmt.Errorf( + "collected metric %q { %s} has a label with an invalid name: %s", + name, dtoMetric, labelName, + ) + } + if dtoMetric.Summary != nil && labelName == quantileLabel { + return fmt.Errorf( + "collected metric %q { %s} must not have an explicit %q label", + name, dtoMetric, quantileLabel, + ) + } + if !utf8.ValidString(labelPair.GetValue()) { + return fmt.Errorf( + "collected metric %q { %s} has a label named %q whose value is not utf8: %#v", + name, dtoMetric, labelName, labelPair.GetValue()) + } + previousLabelName = labelName + } + + // Is the metric unique (i.e. no other metric with the same name and the same labels)? h := hashNew() - h = hashAdd(h, metricFamily.GetName()) + h = hashAdd(h, name) h = hashAddByte(h, separatorByte) - dh := hashNew() // Make sure label pairs are sorted. We depend on it for the consistency // check. - sort.Sort(LabelPairSorter(dtoMetric.Label)) + if !sort.IsSorted(labelPairSorter(dtoMetric.Label)) { + // We cannot sort dtoMetric.Label in place as it is immutable by contract. + copiedLabels := make([]*dto.LabelPair, len(dtoMetric.Label)) + copy(copiedLabels, dtoMetric.Label) + sort.Sort(labelPairSorter(copiedLabels)) + dtoMetric.Label = copiedLabels + } for _, lp := range dtoMetric.Label { + h = hashAdd(h, lp.GetName()) + h = hashAddByte(h, separatorByte) h = hashAdd(h, lp.GetValue()) h = hashAddByte(h, separatorByte) - dh = hashAdd(dh, lp.GetName()) - dh = hashAddByte(dh, separatorByte) } if _, exists := metricHashes[h]; exists { return fmt.Errorf( - "collected metric %s %s was collected before with the same name and label values", - metricFamily.GetName(), dtoMetric, + "collected metric %q { %s} was collected before with the same name and label values", + name, dtoMetric, ) } - if dimHash, ok := dimHashes[metricFamily.GetName()]; ok { - if dimHash != dh { - return fmt.Errorf( - "collected metric %s %s has label dimensions inconsistent with previously collected metrics in the same metric family", - metricFamily.GetName(), dtoMetric, - ) - } - } else { - dimHashes[metricFamily.GetName()] = dh - } metricHashes[h] = struct{}{} return nil } @@ -778,8 +909,8 @@ func checkDescConsistency( } // Is the desc consistent with the content of the metric? - lpsFromDesc := make([]*dto.LabelPair, 0, len(dtoMetric.Label)) - lpsFromDesc = append(lpsFromDesc, desc.constLabelPairs...) + lpsFromDesc := make([]*dto.LabelPair, len(desc.constLabelPairs), len(dtoMetric.Label)) + copy(lpsFromDesc, desc.constLabelPairs) for _, l := range desc.variableLabels { lpsFromDesc = append(lpsFromDesc, &dto.LabelPair{ Name: proto.String(l), @@ -791,7 +922,7 @@ func checkDescConsistency( metricFamily.GetName(), dtoMetric, desc, ) } - sort.Sort(LabelPairSorter(lpsFromDesc)) + sort.Sort(labelPairSorter(lpsFromDesc)) for i, lpFromDesc := range lpsFromDesc { lpFromMetric := dtoMetric.Label[i] if lpFromDesc.GetName() != lpFromMetric.GetName() || diff --git a/vendor/github.com/prometheus/client_golang/prometheus/summary.go b/vendor/github.com/prometheus/client_golang/prometheus/summary.go index bce05bf..2980614 100644 --- a/vendor/github.com/prometheus/client_golang/prometheus/summary.go +++ b/vendor/github.com/prometheus/client_golang/prometheus/summary.go @@ -36,7 +36,10 @@ const quantileLabel = "quantile" // // A typical use-case is the observation of request latencies. By default, a // Summary provides the median, the 90th and the 99th percentile of the latency -// as rank estimations. +// as rank estimations. However, the default behavior will change in the +// upcoming v0.10 of the library. There will be no rank estimations at all by +// default. For a sane transition, it is recommended to set the desired rank +// estimations explicitly. // // Note that the rank estimations cannot be aggregated in a meaningful way with // the Prometheus query language (i.e. you cannot average or add them). If you @@ -54,6 +57,9 @@ type Summary interface { } // DefObjectives are the default Summary quantile values. +// +// Deprecated: DefObjectives will not be used as the default objectives in +// v0.10 of the library. The default Summary will have no quantiles then. var ( DefObjectives = map[float64]float64{0.5: 0.05, 0.9: 0.01, 0.99: 0.001} @@ -75,8 +81,10 @@ const ( ) // SummaryOpts bundles the options for creating a Summary metric. It is -// mandatory to set Name and Help to a non-empty string. All other fields are -// optional and can safely be left at their zero value. +// mandatory to set Name to a non-empty string. While all other fields are +// optional and can safely be left at their zero value, it is recommended to set +// a help string and to explicitly set the Objectives field to the desired value +// as the default value will change in the upcoming v0.10 of the library. type SummaryOpts struct { // Namespace, Subsystem, and Name are components of the fully-qualified // name of the Summary (created by joining these components with @@ -87,35 +95,39 @@ type SummaryOpts struct { Subsystem string Name string - // Help provides information about this Summary. Mandatory! + // Help provides information about this Summary. // // Metrics with the same fully-qualified name must have the same Help // string. Help string - // ConstLabels are used to attach fixed labels to this - // Summary. Summaries with the same fully-qualified name must have the - // same label names in their ConstLabels. + // ConstLabels are used to attach fixed labels to this metric. Metrics + // with the same fully-qualified name must have the same label names in + // their ConstLabels. // - // Note that in most cases, labels have a value that varies during the - // lifetime of a process. Those labels are usually managed with a - // SummaryVec. ConstLabels serve only special purposes. One is for the - // special case where the value of a label does not change during the - // lifetime of a process, e.g. if the revision of the running binary is - // put into a label. Another, more advanced purpose is if more than one - // Collector needs to collect Summaries with the same fully-qualified - // name. In that case, those Summaries must differ in the values of - // their ConstLabels. See the Collector examples. + // Due to the way a Summary is represented in the Prometheus text format + // and how it is handled by the Prometheus server internally, “quantile” + // is an illegal label name. Construction of a Summary or SummaryVec + // will panic if this label name is used in ConstLabels. // - // If the value of a label never changes (not even between binaries), - // that label most likely should not be a label at all (but part of the - // metric name). + // ConstLabels are only used rarely. In particular, do not use them to + // attach the same labels to all your metrics. Those use cases are + // better covered by target labels set by the scraping Prometheus + // server, or by one specific metric (e.g. a build_info or a + // machine_role metric). See also + // https://prometheus.io/docs/instrumenting/writing_exporters/#target-labels,-not-static-scraped-labels ConstLabels Labels // Objectives defines the quantile rank estimates with their respective - // absolute error. If Objectives[q] = e, then the value reported - // for q will be the φ-quantile value for some φ between q-e and q+e. - // The default value is DefObjectives. + // absolute error. If Objectives[q] = e, then the value reported for q + // will be the φ-quantile value for some φ between q-e and q+e. The + // default value is DefObjectives. It is used if Objectives is left at + // its zero value (i.e. nil). To create a Summary without Objectives, + // set it to an empty map (i.e. map[float64]float64{}). + // + // Deprecated: Note that the current value of DefObjectives is + // deprecated. It will be replaced by an empty map in v0.10 of the + // library. Please explicitly set Objectives to the desired value. Objectives map[float64]float64 // MaxAge defines the duration for which an observation stays relevant @@ -169,7 +181,7 @@ func NewSummary(opts SummaryOpts) Summary { func newSummary(desc *Desc, opts SummaryOpts, labelValues ...string) Summary { if len(desc.variableLabels) != len(labelValues) { - panic(errInconsistentCardinality) + panic(makeInconsistentCardinalityError(desc.fqName, desc.variableLabels, labelValues)) } for _, n := range desc.variableLabels { @@ -183,7 +195,7 @@ func newSummary(desc *Desc, opts SummaryOpts, labelValues ...string) Summary { } } - if len(opts.Objectives) == 0 { + if opts.Objectives == nil { opts.Objectives = DefObjectives } @@ -390,13 +402,21 @@ func (s quantSort) Less(i, j int) bool { // (e.g. HTTP request latencies, partitioned by status code and method). Create // instances with NewSummaryVec. type SummaryVec struct { - *MetricVec + *metricVec } // NewSummaryVec creates a new SummaryVec based on the provided SummaryOpts and -// partitioned by the given label names. At least one label name must be -// provided. +// partitioned by the given label names. +// +// Due to the way a Summary is represented in the Prometheus text format and how +// it is handled by the Prometheus server internally, “quantile” is an illegal +// label name. NewSummaryVec will panic if this label name is used. func NewSummaryVec(opts SummaryOpts, labelNames []string) *SummaryVec { + for _, ln := range labelNames { + if ln == quantileLabel { + panic(errQuantileLabelNotAllowed) + } + } desc := NewDesc( BuildFQName(opts.Namespace, opts.Subsystem, opts.Name), opts.Help, @@ -404,47 +424,116 @@ func NewSummaryVec(opts SummaryOpts, labelNames []string) *SummaryVec { opts.ConstLabels, ) return &SummaryVec{ - MetricVec: newMetricVec(desc, func(lvs ...string) Metric { + metricVec: newMetricVec(desc, func(lvs ...string) Metric { return newSummary(desc, opts, lvs...) }), } } -// GetMetricWithLabelValues replaces the method of the same name in -// MetricVec. The difference is that this method returns a Summary and not a -// Metric so that no type conversion is required. -func (m *SummaryVec) GetMetricWithLabelValues(lvs ...string) (Summary, error) { - metric, err := m.MetricVec.GetMetricWithLabelValues(lvs...) +// GetMetricWithLabelValues returns the Summary for the given slice of label +// values (same order as the VariableLabels in Desc). If that combination of +// label values is accessed for the first time, a new Summary is created. +// +// It is possible to call this method without using the returned Summary to only +// create the new Summary but leave it at its starting value, a Summary without +// any observations. +// +// Keeping the Summary for later use is possible (and should be considered if +// performance is critical), but keep in mind that Reset, DeleteLabelValues and +// Delete can be used to delete the Summary from the SummaryVec. In that case, +// the Summary will still exist, but it will not be exported anymore, even if a +// Summary with the same label values is created later. See also the CounterVec +// example. +// +// An error is returned if the number of label values is not the same as the +// number of VariableLabels in Desc (minus any curried labels). +// +// Note that for more than one label value, this method is prone to mistakes +// caused by an incorrect order of arguments. Consider GetMetricWith(Labels) as +// an alternative to avoid that type of mistake. For higher label numbers, the +// latter has a much more readable (albeit more verbose) syntax, but it comes +// with a performance overhead (for creating and processing the Labels map). +// See also the GaugeVec example. +func (v *SummaryVec) GetMetricWithLabelValues(lvs ...string) (Observer, error) { + metric, err := v.metricVec.getMetricWithLabelValues(lvs...) if metric != nil { - return metric.(Summary), err + return metric.(Observer), err } return nil, err } -// GetMetricWith replaces the method of the same name in MetricVec. The -// difference is that this method returns a Summary and not a Metric so that no -// type conversion is required. -func (m *SummaryVec) GetMetricWith(labels Labels) (Summary, error) { - metric, err := m.MetricVec.GetMetricWith(labels) +// GetMetricWith returns the Summary for the given Labels map (the label names +// must match those of the VariableLabels in Desc). If that label map is +// accessed for the first time, a new Summary is created. Implications of +// creating a Summary without using it and keeping the Summary for later use are +// the same as for GetMetricWithLabelValues. +// +// An error is returned if the number and names of the Labels are inconsistent +// with those of the VariableLabels in Desc (minus any curried labels). +// +// This method is used for the same purpose as +// GetMetricWithLabelValues(...string). See there for pros and cons of the two +// methods. +func (v *SummaryVec) GetMetricWith(labels Labels) (Observer, error) { + metric, err := v.metricVec.getMetricWith(labels) if metric != nil { - return metric.(Summary), err + return metric.(Observer), err } return nil, err } // WithLabelValues works as GetMetricWithLabelValues, but panics where -// GetMetricWithLabelValues would have returned an error. By not returning an -// error, WithLabelValues allows shortcuts like +// GetMetricWithLabelValues would have returned an error. Not returning an +// error allows shortcuts like // myVec.WithLabelValues("404", "GET").Observe(42.21) -func (m *SummaryVec) WithLabelValues(lvs ...string) Summary { - return m.MetricVec.WithLabelValues(lvs...).(Summary) +func (v *SummaryVec) WithLabelValues(lvs ...string) Observer { + s, err := v.GetMetricWithLabelValues(lvs...) + if err != nil { + panic(err) + } + return s } // With works as GetMetricWith, but panics where GetMetricWithLabels would have -// returned an error. By not returning an error, With allows shortcuts like -// myVec.With(Labels{"code": "404", "method": "GET"}).Observe(42.21) -func (m *SummaryVec) With(labels Labels) Summary { - return m.MetricVec.With(labels).(Summary) +// returned an error. Not returning an error allows shortcuts like +// myVec.With(prometheus.Labels{"code": "404", "method": "GET"}).Observe(42.21) +func (v *SummaryVec) With(labels Labels) Observer { + s, err := v.GetMetricWith(labels) + if err != nil { + panic(err) + } + return s +} + +// CurryWith returns a vector curried with the provided labels, i.e. the +// returned vector has those labels pre-set for all labeled operations performed +// on it. The cardinality of the curried vector is reduced accordingly. The +// order of the remaining labels stays the same (just with the curried labels +// taken out of the sequence – which is relevant for the +// (GetMetric)WithLabelValues methods). It is possible to curry a curried +// vector, but only with labels not yet used for currying before. +// +// The metrics contained in the SummaryVec are shared between the curried and +// uncurried vectors. They are just accessed differently. Curried and uncurried +// vectors behave identically in terms of collection. Only one must be +// registered with a given registry (usually the uncurried version). The Reset +// method deletes all metrics, even if called on a curried vector. +func (v *SummaryVec) CurryWith(labels Labels) (ObserverVec, error) { + vec, err := v.curryWith(labels) + if vec != nil { + return &SummaryVec{vec}, err + } + return nil, err +} + +// MustCurryWith works as CurryWith but panics where CurryWith would have +// returned an error. +func (v *SummaryVec) MustCurryWith(labels Labels) ObserverVec { + vec, err := v.CurryWith(labels) + if err != nil { + panic(err) + } + return vec } type constSummary struct { @@ -497,7 +586,7 @@ func (s *constSummary) Write(out *dto.Metric) error { // map[float64]float64{0.5: 0.23, 0.99: 0.56} // // NewConstSummary returns an error if the length of labelValues is not -// consistent with the variable labels in Desc. +// consistent with the variable labels in Desc or if Desc is invalid. func NewConstSummary( desc *Desc, count uint64, @@ -505,8 +594,11 @@ func NewConstSummary( quantiles map[float64]float64, labelValues ...string, ) (Metric, error) { - if len(desc.variableLabels) != len(labelValues) { - return nil, errInconsistentCardinality + if desc.err != nil { + return nil, desc.err + } + if err := validateLabelValues(labelValues, len(desc.variableLabels)); err != nil { + return nil, err } return &constSummary{ desc: desc, diff --git a/vendor/github.com/prometheus/client_golang/prometheus/timer.go b/vendor/github.com/prometheus/client_golang/prometheus/timer.go new file mode 100644 index 0000000..8d5f105 --- /dev/null +++ b/vendor/github.com/prometheus/client_golang/prometheus/timer.go @@ -0,0 +1,54 @@ +// Copyright 2016 The Prometheus Authors +// Licensed under the Apache License, Version 2.0 (the "License"); +// you may not use this file except in compliance with the License. +// You may obtain a copy of the License at +// +// http://www.apache.org/licenses/LICENSE-2.0 +// +// Unless required by applicable law or agreed to in writing, software +// distributed under the License is distributed on an "AS IS" BASIS, +// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. +// See the License for the specific language governing permissions and +// limitations under the License. + +package prometheus + +import "time" + +// Timer is a helper type to time functions. Use NewTimer to create new +// instances. +type Timer struct { + begin time.Time + observer Observer +} + +// NewTimer creates a new Timer. The provided Observer is used to observe a +// duration in seconds. Timer is usually used to time a function call in the +// following way: +// func TimeMe() { +// timer := NewTimer(myHistogram) +// defer timer.ObserveDuration() +// // Do actual work. +// } +func NewTimer(o Observer) *Timer { + return &Timer{ + begin: time.Now(), + observer: o, + } +} + +// ObserveDuration records the duration passed since the Timer was created with +// NewTimer. It calls the Observe method of the Observer provided during +// construction with the duration in seconds as an argument. The observed +// duration is also returned. ObserveDuration is usually called with a defer +// statement. +// +// Note that this method is only guaranteed to never observe negative durations +// if used with Go1.9+. +func (t *Timer) ObserveDuration() time.Duration { + d := time.Since(t.begin) + if t.observer != nil { + t.observer.Observe(d.Seconds()) + } + return d +} diff --git a/vendor/github.com/prometheus/client_golang/prometheus/untyped.go b/vendor/github.com/prometheus/client_golang/prometheus/untyped.go index 5faf7e6..0f9ce63 100644 --- a/vendor/github.com/prometheus/client_golang/prometheus/untyped.go +++ b/vendor/github.com/prometheus/client_golang/prometheus/untyped.go @@ -13,108 +13,12 @@ package prometheus -// Untyped is a Metric that represents a single numerical value that can -// arbitrarily go up and down. -// -// An Untyped metric works the same as a Gauge. The only difference is that to -// no type information is implied. -// -// To create Untyped instances, use NewUntyped. -type Untyped interface { - Metric - Collector - - // Set sets the Untyped metric to an arbitrary value. - Set(float64) - // Inc increments the Untyped metric by 1. - Inc() - // Dec decrements the Untyped metric by 1. - Dec() - // Add adds the given value to the Untyped metric. (The value can be - // negative, resulting in a decrease.) - Add(float64) - // Sub subtracts the given value from the Untyped metric. (The value can - // be negative, resulting in an increase.) - Sub(float64) -} - // UntypedOpts is an alias for Opts. See there for doc comments. type UntypedOpts Opts -// NewUntyped creates a new Untyped metric from the provided UntypedOpts. -func NewUntyped(opts UntypedOpts) Untyped { - return newValue(NewDesc( - BuildFQName(opts.Namespace, opts.Subsystem, opts.Name), - opts.Help, - nil, - opts.ConstLabels, - ), UntypedValue, 0) -} - -// UntypedVec is a Collector that bundles a set of Untyped metrics that all -// share the same Desc, but have different values for their variable -// labels. This is used if you want to count the same thing partitioned by -// various dimensions. Create instances with NewUntypedVec. -type UntypedVec struct { - *MetricVec -} - -// NewUntypedVec creates a new UntypedVec based on the provided UntypedOpts and -// partitioned by the given label names. At least one label name must be -// provided. -func NewUntypedVec(opts UntypedOpts, labelNames []string) *UntypedVec { - desc := NewDesc( - BuildFQName(opts.Namespace, opts.Subsystem, opts.Name), - opts.Help, - labelNames, - opts.ConstLabels, - ) - return &UntypedVec{ - MetricVec: newMetricVec(desc, func(lvs ...string) Metric { - return newValue(desc, UntypedValue, 0, lvs...) - }), - } -} - -// GetMetricWithLabelValues replaces the method of the same name in -// MetricVec. The difference is that this method returns an Untyped and not a -// Metric so that no type conversion is required. -func (m *UntypedVec) GetMetricWithLabelValues(lvs ...string) (Untyped, error) { - metric, err := m.MetricVec.GetMetricWithLabelValues(lvs...) - if metric != nil { - return metric.(Untyped), err - } - return nil, err -} - -// GetMetricWith replaces the method of the same name in MetricVec. The -// difference is that this method returns an Untyped and not a Metric so that no -// type conversion is required. -func (m *UntypedVec) GetMetricWith(labels Labels) (Untyped, error) { - metric, err := m.MetricVec.GetMetricWith(labels) - if metric != nil { - return metric.(Untyped), err - } - return nil, err -} - -// WithLabelValues works as GetMetricWithLabelValues, but panics where -// GetMetricWithLabelValues would have returned an error. By not returning an -// error, WithLabelValues allows shortcuts like -// myVec.WithLabelValues("404", "GET").Add(42) -func (m *UntypedVec) WithLabelValues(lvs ...string) Untyped { - return m.MetricVec.WithLabelValues(lvs...).(Untyped) -} - -// With works as GetMetricWith, but panics where GetMetricWithLabels would have -// returned an error. By not returning an error, With allows shortcuts like -// myVec.With(Labels{"code": "404", "method": "GET"}).Add(42) -func (m *UntypedVec) With(labels Labels) Untyped { - return m.MetricVec.With(labels).(Untyped) -} - -// UntypedFunc is an Untyped whose value is determined at collect time by -// calling a provided function. +// UntypedFunc works like GaugeFunc but the collected metric is of type +// "Untyped". UntypedFunc is useful to mirror an external metric of unknown +// type. // // To create UntypedFunc instances, use NewUntypedFunc. type UntypedFunc interface { diff --git a/vendor/github.com/prometheus/client_golang/prometheus/value.go b/vendor/github.com/prometheus/client_golang/prometheus/value.go index a944c37..eb248f1 100644 --- a/vendor/github.com/prometheus/client_golang/prometheus/value.go +++ b/vendor/github.com/prometheus/client_golang/prometheus/value.go @@ -14,15 +14,12 @@ package prometheus import ( - "errors" "fmt" - "math" "sort" - "sync/atomic" - - dto "github.com/prometheus/client_model/go" "github.com/golang/protobuf/proto" + + dto "github.com/prometheus/client_model/go" ) // ValueType is an enumeration of metric types that represent a simple value. @@ -36,77 +33,6 @@ const ( UntypedValue ) -var errInconsistentCardinality = errors.New("inconsistent label cardinality") - -// value is a generic metric for simple values. It implements Metric, Collector, -// Counter, Gauge, and Untyped. Its effective type is determined by -// ValueType. This is a low-level building block used by the library to back the -// implementations of Counter, Gauge, and Untyped. -type value struct { - // valBits containst the bits of the represented float64 value. It has - // to go first in the struct to guarantee alignment for atomic - // operations. http://golang.org/pkg/sync/atomic/#pkg-note-BUG - valBits uint64 - - selfCollector - - desc *Desc - valType ValueType - labelPairs []*dto.LabelPair -} - -// newValue returns a newly allocated value with the given Desc, ValueType, -// sample value and label values. It panics if the number of label -// values is different from the number of variable labels in Desc. -func newValue(desc *Desc, valueType ValueType, val float64, labelValues ...string) *value { - if len(labelValues) != len(desc.variableLabels) { - panic(errInconsistentCardinality) - } - result := &value{ - desc: desc, - valType: valueType, - valBits: math.Float64bits(val), - labelPairs: makeLabelPairs(desc, labelValues), - } - result.init(result) - return result -} - -func (v *value) Desc() *Desc { - return v.desc -} - -func (v *value) Set(val float64) { - atomic.StoreUint64(&v.valBits, math.Float64bits(val)) -} - -func (v *value) Inc() { - v.Add(1) -} - -func (v *value) Dec() { - v.Add(-1) -} - -func (v *value) Add(val float64) { - for { - oldBits := atomic.LoadUint64(&v.valBits) - newBits := math.Float64bits(math.Float64frombits(oldBits) + val) - if atomic.CompareAndSwapUint64(&v.valBits, oldBits, newBits) { - return - } - } -} - -func (v *value) Sub(val float64) { - v.Add(val * -1) -} - -func (v *value) Write(out *dto.Metric) error { - val := math.Float64frombits(atomic.LoadUint64(&v.valBits)) - return populateMetric(v.valType, val, v.labelPairs, out) -} - // valueFunc is a generic metric for simple values retrieved on collect time // from a function. It implements Metric and Collector. Its effective type is // determined by ValueType. This is a low-level building block used by the @@ -151,10 +77,14 @@ func (v *valueFunc) Write(out *dto.Metric) error { // operations. However, when implementing custom Collectors, it is useful as a // throw-away metric that is generated on the fly to send it to Prometheus in // the Collect method. NewConstMetric returns an error if the length of -// labelValues is not consistent with the variable labels in Desc. +// labelValues is not consistent with the variable labels in Desc or if Desc is +// invalid. func NewConstMetric(desc *Desc, valueType ValueType, value float64, labelValues ...string) (Metric, error) { - if len(desc.variableLabels) != len(labelValues) { - return nil, errInconsistentCardinality + if desc.err != nil { + return nil, desc.err + } + if err := validateLabelValues(labelValues, len(desc.variableLabels)); err != nil { + return nil, err } return &constMetric{ desc: desc, @@ -226,9 +156,7 @@ func makeLabelPairs(desc *Desc, labelValues []string) []*dto.LabelPair { Value: proto.String(labelValues[i]), }) } - for _, lp := range desc.constLabelPairs { - labelPairs = append(labelPairs, lp) - } - sort.Sort(LabelPairSorter(labelPairs)) + labelPairs = append(labelPairs, desc.constLabelPairs...) + sort.Sort(labelPairSorter(labelPairs)) return labelPairs } diff --git a/vendor/github.com/prometheus/client_golang/prometheus/vec.go b/vendor/github.com/prometheus/client_golang/prometheus/vec.go index 7f3eef9..14ed9e8 100644 --- a/vendor/github.com/prometheus/client_golang/prometheus/vec.go +++ b/vendor/github.com/prometheus/client_golang/prometheus/vec.go @@ -20,33 +20,180 @@ import ( "github.com/prometheus/common/model" ) -// MetricVec is a Collector to bundle metrics of the same name that -// differ in their label values. MetricVec is usually not used directly but as a -// building block for implementations of vectors of a given metric -// type. GaugeVec, CounterVec, SummaryVec, and UntypedVec are examples already -// provided in this package. -type MetricVec struct { - mtx sync.RWMutex // Protects the children. - children map[uint64][]metricWithLabelValues - desc *Desc +// metricVec is a Collector to bundle metrics of the same name that differ in +// their label values. metricVec is not used directly (and therefore +// unexported). It is used as a building block for implementations of vectors of +// a given metric type, like GaugeVec, CounterVec, SummaryVec, and HistogramVec. +// It also handles label currying. It uses basicMetricVec internally. +type metricVec struct { + *metricMap - newMetric func(labelValues ...string) Metric - hashAdd func(h uint64, s string) uint64 // replace hash function for testing collision handling + curry []curriedLabelValue + + // hashAdd and hashAddByte can be replaced for testing collision handling. + hashAdd func(h uint64, s string) uint64 hashAddByte func(h uint64, b byte) uint64 } -// newMetricVec returns an initialized MetricVec. The concrete value is -// returned for embedding into another struct. -func newMetricVec(desc *Desc, newMetric func(lvs ...string) Metric) *MetricVec { - return &MetricVec{ - children: map[uint64][]metricWithLabelValues{}, - desc: desc, - newMetric: newMetric, +// newMetricVec returns an initialized metricVec. +func newMetricVec(desc *Desc, newMetric func(lvs ...string) Metric) *metricVec { + return &metricVec{ + metricMap: &metricMap{ + metrics: map[uint64][]metricWithLabelValues{}, + desc: desc, + newMetric: newMetric, + }, hashAdd: hashAdd, hashAddByte: hashAddByte, } } +// DeleteLabelValues removes the metric where the variable labels are the same +// as those passed in as labels (same order as the VariableLabels in Desc). It +// returns true if a metric was deleted. +// +// It is not an error if the number of label values is not the same as the +// number of VariableLabels in Desc. However, such inconsistent label count can +// never match an actual metric, so the method will always return false in that +// case. +// +// Note that for more than one label value, this method is prone to mistakes +// caused by an incorrect order of arguments. Consider Delete(Labels) as an +// alternative to avoid that type of mistake. For higher label numbers, the +// latter has a much more readable (albeit more verbose) syntax, but it comes +// with a performance overhead (for creating and processing the Labels map). +// See also the CounterVec example. +func (m *metricVec) DeleteLabelValues(lvs ...string) bool { + h, err := m.hashLabelValues(lvs) + if err != nil { + return false + } + + return m.metricMap.deleteByHashWithLabelValues(h, lvs, m.curry) +} + +// Delete deletes the metric where the variable labels are the same as those +// passed in as labels. It returns true if a metric was deleted. +// +// It is not an error if the number and names of the Labels are inconsistent +// with those of the VariableLabels in Desc. However, such inconsistent Labels +// can never match an actual metric, so the method will always return false in +// that case. +// +// This method is used for the same purpose as DeleteLabelValues(...string). See +// there for pros and cons of the two methods. +func (m *metricVec) Delete(labels Labels) bool { + h, err := m.hashLabels(labels) + if err != nil { + return false + } + + return m.metricMap.deleteByHashWithLabels(h, labels, m.curry) +} + +func (m *metricVec) curryWith(labels Labels) (*metricVec, error) { + var ( + newCurry []curriedLabelValue + oldCurry = m.curry + iCurry int + ) + for i, label := range m.desc.variableLabels { + val, ok := labels[label] + if iCurry < len(oldCurry) && oldCurry[iCurry].index == i { + if ok { + return nil, fmt.Errorf("label name %q is already curried", label) + } + newCurry = append(newCurry, oldCurry[iCurry]) + iCurry++ + } else { + if !ok { + continue // Label stays uncurried. + } + newCurry = append(newCurry, curriedLabelValue{i, val}) + } + } + if l := len(oldCurry) + len(labels) - len(newCurry); l > 0 { + return nil, fmt.Errorf("%d unknown label(s) found during currying", l) + } + + return &metricVec{ + metricMap: m.metricMap, + curry: newCurry, + hashAdd: m.hashAdd, + hashAddByte: m.hashAddByte, + }, nil +} + +func (m *metricVec) getMetricWithLabelValues(lvs ...string) (Metric, error) { + h, err := m.hashLabelValues(lvs) + if err != nil { + return nil, err + } + + return m.metricMap.getOrCreateMetricWithLabelValues(h, lvs, m.curry), nil +} + +func (m *metricVec) getMetricWith(labels Labels) (Metric, error) { + h, err := m.hashLabels(labels) + if err != nil { + return nil, err + } + + return m.metricMap.getOrCreateMetricWithLabels(h, labels, m.curry), nil +} + +func (m *metricVec) hashLabelValues(vals []string) (uint64, error) { + if err := validateLabelValues(vals, len(m.desc.variableLabels)-len(m.curry)); err != nil { + return 0, err + } + + var ( + h = hashNew() + curry = m.curry + iVals, iCurry int + ) + for i := 0; i < len(m.desc.variableLabels); i++ { + if iCurry < len(curry) && curry[iCurry].index == i { + h = m.hashAdd(h, curry[iCurry].value) + iCurry++ + } else { + h = m.hashAdd(h, vals[iVals]) + iVals++ + } + h = m.hashAddByte(h, model.SeparatorByte) + } + return h, nil +} + +func (m *metricVec) hashLabels(labels Labels) (uint64, error) { + if err := validateValuesInLabels(labels, len(m.desc.variableLabels)-len(m.curry)); err != nil { + return 0, err + } + + var ( + h = hashNew() + curry = m.curry + iCurry int + ) + for i, label := range m.desc.variableLabels { + val, ok := labels[label] + if iCurry < len(curry) && curry[iCurry].index == i { + if ok { + return 0, fmt.Errorf("label name %q is already curried", label) + } + h = m.hashAdd(h, curry[iCurry].value) + iCurry++ + } else { + if !ok { + return 0, fmt.Errorf("label name %q missing in label map", label) + } + h = m.hashAdd(h, val) + } + h = m.hashAddByte(h, model.SeparatorByte) + } + return h, nil +} + // metricWithLabelValues provides the metric and its label values for // disambiguation on hash collision. type metricWithLabelValues struct { @@ -54,166 +201,72 @@ type metricWithLabelValues struct { metric Metric } -// Describe implements Collector. The length of the returned slice -// is always one. -func (m *MetricVec) Describe(ch chan<- *Desc) { +// curriedLabelValue sets the curried value for a label at the given index. +type curriedLabelValue struct { + index int + value string +} + +// metricMap is a helper for metricVec and shared between differently curried +// metricVecs. +type metricMap struct { + mtx sync.RWMutex // Protects metrics. + metrics map[uint64][]metricWithLabelValues + desc *Desc + newMetric func(labelValues ...string) Metric +} + +// Describe implements Collector. It will send exactly one Desc to the provided +// channel. +func (m *metricMap) Describe(ch chan<- *Desc) { ch <- m.desc } // Collect implements Collector. -func (m *MetricVec) Collect(ch chan<- Metric) { +func (m *metricMap) Collect(ch chan<- Metric) { m.mtx.RLock() defer m.mtx.RUnlock() - for _, metrics := range m.children { + for _, metrics := range m.metrics { for _, metric := range metrics { ch <- metric.metric } } } -// GetMetricWithLabelValues returns the Metric for the given slice of label -// values (same order as the VariableLabels in Desc). If that combination of -// label values is accessed for the first time, a new Metric is created. -// -// It is possible to call this method without using the returned Metric to only -// create the new Metric but leave it at its start value (e.g. a Summary or -// Histogram without any observations). See also the SummaryVec example. -// -// Keeping the Metric for later use is possible (and should be considered if -// performance is critical), but keep in mind that Reset, DeleteLabelValues and -// Delete can be used to delete the Metric from the MetricVec. In that case, the -// Metric will still exist, but it will not be exported anymore, even if a -// Metric with the same label values is created later. See also the CounterVec -// example. -// -// An error is returned if the number of label values is not the same as the -// number of VariableLabels in Desc. -// -// Note that for more than one label value, this method is prone to mistakes -// caused by an incorrect order of arguments. Consider GetMetricWith(Labels) as -// an alternative to avoid that type of mistake. For higher label numbers, the -// latter has a much more readable (albeit more verbose) syntax, but it comes -// with a performance overhead (for creating and processing the Labels map). -// See also the GaugeVec example. -func (m *MetricVec) GetMetricWithLabelValues(lvs ...string) (Metric, error) { - h, err := m.hashLabelValues(lvs) - if err != nil { - return nil, err - } - - return m.getOrCreateMetricWithLabelValues(h, lvs), nil -} - -// GetMetricWith returns the Metric for the given Labels map (the label names -// must match those of the VariableLabels in Desc). If that label map is -// accessed for the first time, a new Metric is created. Implications of -// creating a Metric without using it and keeping the Metric for later use are -// the same as for GetMetricWithLabelValues. -// -// An error is returned if the number and names of the Labels are inconsistent -// with those of the VariableLabels in Desc. -// -// This method is used for the same purpose as -// GetMetricWithLabelValues(...string). See there for pros and cons of the two -// methods. -func (m *MetricVec) GetMetricWith(labels Labels) (Metric, error) { - h, err := m.hashLabels(labels) - if err != nil { - return nil, err - } - - return m.getOrCreateMetricWithLabels(h, labels), nil -} - -// WithLabelValues works as GetMetricWithLabelValues, but panics if an error -// occurs. The method allows neat syntax like: -// httpReqs.WithLabelValues("404", "POST").Inc() -func (m *MetricVec) WithLabelValues(lvs ...string) Metric { - metric, err := m.GetMetricWithLabelValues(lvs...) - if err != nil { - panic(err) - } - return metric -} - -// With works as GetMetricWith, but panics if an error occurs. The method allows -// neat syntax like: -// httpReqs.With(Labels{"status":"404", "method":"POST"}).Inc() -func (m *MetricVec) With(labels Labels) Metric { - metric, err := m.GetMetricWith(labels) - if err != nil { - panic(err) - } - return metric -} - -// DeleteLabelValues removes the metric where the variable labels are the same -// as those passed in as labels (same order as the VariableLabels in Desc). It -// returns true if a metric was deleted. -// -// It is not an error if the number of label values is not the same as the -// number of VariableLabels in Desc. However, such inconsistent label count can -// never match an actual Metric, so the method will always return false in that -// case. -// -// Note that for more than one label value, this method is prone to mistakes -// caused by an incorrect order of arguments. Consider Delete(Labels) as an -// alternative to avoid that type of mistake. For higher label numbers, the -// latter has a much more readable (albeit more verbose) syntax, but it comes -// with a performance overhead (for creating and processing the Labels map). -// See also the CounterVec example. -func (m *MetricVec) DeleteLabelValues(lvs ...string) bool { +// Reset deletes all metrics in this vector. +func (m *metricMap) Reset() { m.mtx.Lock() defer m.mtx.Unlock() - h, err := m.hashLabelValues(lvs) - if err != nil { - return false + for h := range m.metrics { + delete(m.metrics, h) } - return m.deleteByHashWithLabelValues(h, lvs) -} - -// Delete deletes the metric where the variable labels are the same as those -// passed in as labels. It returns true if a metric was deleted. -// -// It is not an error if the number and names of the Labels are inconsistent -// with those of the VariableLabels in the Desc of the MetricVec. However, such -// inconsistent Labels can never match an actual Metric, so the method will -// always return false in that case. -// -// This method is used for the same purpose as DeleteLabelValues(...string). See -// there for pros and cons of the two methods. -func (m *MetricVec) Delete(labels Labels) bool { - m.mtx.Lock() - defer m.mtx.Unlock() - - h, err := m.hashLabels(labels) - if err != nil { - return false - } - - return m.deleteByHashWithLabels(h, labels) } // deleteByHashWithLabelValues removes the metric from the hash bucket h. If // there are multiple matches in the bucket, use lvs to select a metric and // remove only that metric. -func (m *MetricVec) deleteByHashWithLabelValues(h uint64, lvs []string) bool { - metrics, ok := m.children[h] +func (m *metricMap) deleteByHashWithLabelValues( + h uint64, lvs []string, curry []curriedLabelValue, +) bool { + m.mtx.Lock() + defer m.mtx.Unlock() + + metrics, ok := m.metrics[h] if !ok { return false } - i := m.findMetricWithLabelValues(metrics, lvs) + i := findMetricWithLabelValues(metrics, lvs, curry) if i >= len(metrics) { return false } if len(metrics) > 1 { - m.children[h] = append(metrics[:i], metrics[i+1:]...) + m.metrics[h] = append(metrics[:i], metrics[i+1:]...) } else { - delete(m.children, h) + delete(m.metrics, h) } return true } @@ -221,69 +274,38 @@ func (m *MetricVec) deleteByHashWithLabelValues(h uint64, lvs []string) bool { // deleteByHashWithLabels removes the metric from the hash bucket h. If there // are multiple matches in the bucket, use lvs to select a metric and remove // only that metric. -func (m *MetricVec) deleteByHashWithLabels(h uint64, labels Labels) bool { - metrics, ok := m.children[h] +func (m *metricMap) deleteByHashWithLabels( + h uint64, labels Labels, curry []curriedLabelValue, +) bool { + m.mtx.Lock() + defer m.mtx.Unlock() + + metrics, ok := m.metrics[h] if !ok { return false } - i := m.findMetricWithLabels(metrics, labels) + i := findMetricWithLabels(m.desc, metrics, labels, curry) if i >= len(metrics) { return false } if len(metrics) > 1 { - m.children[h] = append(metrics[:i], metrics[i+1:]...) + m.metrics[h] = append(metrics[:i], metrics[i+1:]...) } else { - delete(m.children, h) + delete(m.metrics, h) } return true } -// Reset deletes all metrics in this vector. -func (m *MetricVec) Reset() { - m.mtx.Lock() - defer m.mtx.Unlock() - - for h := range m.children { - delete(m.children, h) - } -} - -func (m *MetricVec) hashLabelValues(vals []string) (uint64, error) { - if len(vals) != len(m.desc.variableLabels) { - return 0, errInconsistentCardinality - } - h := hashNew() - for _, val := range vals { - h = m.hashAdd(h, val) - h = m.hashAddByte(h, model.SeparatorByte) - } - return h, nil -} - -func (m *MetricVec) hashLabels(labels Labels) (uint64, error) { - if len(labels) != len(m.desc.variableLabels) { - return 0, errInconsistentCardinality - } - h := hashNew() - for _, label := range m.desc.variableLabels { - val, ok := labels[label] - if !ok { - return 0, fmt.Errorf("label name %q missing in label map", label) - } - h = m.hashAdd(h, val) - h = m.hashAddByte(h, model.SeparatorByte) - } - return h, nil -} - // getOrCreateMetricWithLabelValues retrieves the metric by hash and label value // or creates it and returns the new one. // // This function holds the mutex. -func (m *MetricVec) getOrCreateMetricWithLabelValues(hash uint64, lvs []string) Metric { +func (m *metricMap) getOrCreateMetricWithLabelValues( + hash uint64, lvs []string, curry []curriedLabelValue, +) Metric { m.mtx.RLock() - metric, ok := m.getMetricWithLabelValues(hash, lvs) + metric, ok := m.getMetricWithHashAndLabelValues(hash, lvs, curry) m.mtx.RUnlock() if ok { return metric @@ -291,13 +313,11 @@ func (m *MetricVec) getOrCreateMetricWithLabelValues(hash uint64, lvs []string) m.mtx.Lock() defer m.mtx.Unlock() - metric, ok = m.getMetricWithLabelValues(hash, lvs) + metric, ok = m.getMetricWithHashAndLabelValues(hash, lvs, curry) if !ok { - // Copy to avoid allocation in case wo don't go down this code path. - copiedLVs := make([]string, len(lvs)) - copy(copiedLVs, lvs) - metric = m.newMetric(copiedLVs...) - m.children[hash] = append(m.children[hash], metricWithLabelValues{values: copiedLVs, metric: metric}) + inlinedLVs := inlineLabelValues(lvs, curry) + metric = m.newMetric(inlinedLVs...) + m.metrics[hash] = append(m.metrics[hash], metricWithLabelValues{values: inlinedLVs, metric: metric}) } return metric } @@ -306,9 +326,11 @@ func (m *MetricVec) getOrCreateMetricWithLabelValues(hash uint64, lvs []string) // or creates it and returns the new one. // // This function holds the mutex. -func (m *MetricVec) getOrCreateMetricWithLabels(hash uint64, labels Labels) Metric { +func (m *metricMap) getOrCreateMetricWithLabels( + hash uint64, labels Labels, curry []curriedLabelValue, +) Metric { m.mtx.RLock() - metric, ok := m.getMetricWithLabels(hash, labels) + metric, ok := m.getMetricWithHashAndLabels(hash, labels, curry) m.mtx.RUnlock() if ok { return metric @@ -316,33 +338,37 @@ func (m *MetricVec) getOrCreateMetricWithLabels(hash uint64, labels Labels) Metr m.mtx.Lock() defer m.mtx.Unlock() - metric, ok = m.getMetricWithLabels(hash, labels) + metric, ok = m.getMetricWithHashAndLabels(hash, labels, curry) if !ok { - lvs := m.extractLabelValues(labels) + lvs := extractLabelValues(m.desc, labels, curry) metric = m.newMetric(lvs...) - m.children[hash] = append(m.children[hash], metricWithLabelValues{values: lvs, metric: metric}) + m.metrics[hash] = append(m.metrics[hash], metricWithLabelValues{values: lvs, metric: metric}) } return metric } -// getMetricWithLabelValues gets a metric while handling possible collisions in -// the hash space. Must be called while holding read mutex. -func (m *MetricVec) getMetricWithLabelValues(h uint64, lvs []string) (Metric, bool) { - metrics, ok := m.children[h] +// getMetricWithHashAndLabelValues gets a metric while handling possible +// collisions in the hash space. Must be called while holding the read mutex. +func (m *metricMap) getMetricWithHashAndLabelValues( + h uint64, lvs []string, curry []curriedLabelValue, +) (Metric, bool) { + metrics, ok := m.metrics[h] if ok { - if i := m.findMetricWithLabelValues(metrics, lvs); i < len(metrics) { + if i := findMetricWithLabelValues(metrics, lvs, curry); i < len(metrics) { return metrics[i].metric, true } } return nil, false } -// getMetricWithLabels gets a metric while handling possible collisions in +// getMetricWithHashAndLabels gets a metric while handling possible collisions in // the hash space. Must be called while holding read mutex. -func (m *MetricVec) getMetricWithLabels(h uint64, labels Labels) (Metric, bool) { - metrics, ok := m.children[h] +func (m *metricMap) getMetricWithHashAndLabels( + h uint64, labels Labels, curry []curriedLabelValue, +) (Metric, bool) { + metrics, ok := m.metrics[h] if ok { - if i := m.findMetricWithLabels(metrics, labels); i < len(metrics) { + if i := findMetricWithLabels(m.desc, metrics, labels, curry); i < len(metrics) { return metrics[i].metric, true } } @@ -351,9 +377,11 @@ func (m *MetricVec) getMetricWithLabels(h uint64, labels Labels) (Metric, bool) // findMetricWithLabelValues returns the index of the matching metric or // len(metrics) if not found. -func (m *MetricVec) findMetricWithLabelValues(metrics []metricWithLabelValues, lvs []string) int { +func findMetricWithLabelValues( + metrics []metricWithLabelValues, lvs []string, curry []curriedLabelValue, +) int { for i, metric := range metrics { - if m.matchLabelValues(metric.values, lvs) { + if matchLabelValues(metric.values, lvs, curry) { return i } } @@ -362,32 +390,51 @@ func (m *MetricVec) findMetricWithLabelValues(metrics []metricWithLabelValues, l // findMetricWithLabels returns the index of the matching metric or len(metrics) // if not found. -func (m *MetricVec) findMetricWithLabels(metrics []metricWithLabelValues, labels Labels) int { +func findMetricWithLabels( + desc *Desc, metrics []metricWithLabelValues, labels Labels, curry []curriedLabelValue, +) int { for i, metric := range metrics { - if m.matchLabels(metric.values, labels) { + if matchLabels(desc, metric.values, labels, curry) { return i } } return len(metrics) } -func (m *MetricVec) matchLabelValues(values []string, lvs []string) bool { - if len(values) != len(lvs) { +func matchLabelValues(values []string, lvs []string, curry []curriedLabelValue) bool { + if len(values) != len(lvs)+len(curry) { return false } + var iLVs, iCurry int for i, v := range values { - if v != lvs[i] { + if iCurry < len(curry) && curry[iCurry].index == i { + if v != curry[iCurry].value { + return false + } + iCurry++ + continue + } + if v != lvs[iLVs] { return false } + iLVs++ } return true } -func (m *MetricVec) matchLabels(values []string, labels Labels) bool { - if len(labels) != len(values) { +func matchLabels(desc *Desc, values []string, labels Labels, curry []curriedLabelValue) bool { + if len(values) != len(labels)+len(curry) { return false } - for i, k := range m.desc.variableLabels { + iCurry := 0 + for i, k := range desc.variableLabels { + if iCurry < len(curry) && curry[iCurry].index == i { + if values[i] != curry[iCurry].value { + return false + } + iCurry++ + continue + } if values[i] != labels[k] { return false } @@ -395,10 +442,31 @@ func (m *MetricVec) matchLabels(values []string, labels Labels) bool { return true } -func (m *MetricVec) extractLabelValues(labels Labels) []string { - labelValues := make([]string, len(labels)) - for i, k := range m.desc.variableLabels { +func extractLabelValues(desc *Desc, labels Labels, curry []curriedLabelValue) []string { + labelValues := make([]string, len(labels)+len(curry)) + iCurry := 0 + for i, k := range desc.variableLabels { + if iCurry < len(curry) && curry[iCurry].index == i { + labelValues[i] = curry[iCurry].value + iCurry++ + continue + } labelValues[i] = labels[k] } return labelValues } + +func inlineLabelValues(lvs []string, curry []curriedLabelValue) []string { + labelValues := make([]string, len(lvs)+len(curry)) + var iCurry, iLVs int + for i := range labelValues { + if iCurry < len(curry) && curry[iCurry].index == i { + labelValues[i] = curry[iCurry].value + iCurry++ + continue + } + labelValues[i] = lvs[iLVs] + iLVs++ + } + return labelValues +} diff --git a/vendor/github.com/prometheus/client_golang/prometheus/wrap.go b/vendor/github.com/prometheus/client_golang/prometheus/wrap.go new file mode 100644 index 0000000..49159bf --- /dev/null +++ b/vendor/github.com/prometheus/client_golang/prometheus/wrap.go @@ -0,0 +1,179 @@ +// Copyright 2018 The Prometheus Authors +// Licensed under the Apache License, Version 2.0 (the "License"); +// you may not use this file except in compliance with the License. +// You may obtain a copy of the License at +// +// http://www.apache.org/licenses/LICENSE-2.0 +// +// Unless required by applicable law or agreed to in writing, software +// distributed under the License is distributed on an "AS IS" BASIS, +// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. +// See the License for the specific language governing permissions and +// limitations under the License. + +package prometheus + +import ( + "fmt" + "sort" + + "github.com/golang/protobuf/proto" + + dto "github.com/prometheus/client_model/go" +) + +// WrapRegistererWith returns a Registerer wrapping the provided +// Registerer. Collectors registered with the returned Registerer will be +// registered with the wrapped Registerer in a modified way. The modified +// Collector adds the provided Labels to all Metrics it collects (as +// ConstLabels). The Metrics collected by the unmodified Collector must not +// duplicate any of those labels. +// +// WrapRegistererWith provides a way to add fixed labels to a subset of +// Collectors. It should not be used to add fixed labels to all metrics exposed. +// +// The Collector example demonstrates a use of WrapRegistererWith. +func WrapRegistererWith(labels Labels, reg Registerer) Registerer { + return &wrappingRegisterer{ + wrappedRegisterer: reg, + labels: labels, + } +} + +// WrapRegistererWithPrefix returns a Registerer wrapping the provided +// Registerer. Collectors registered with the returned Registerer will be +// registered with the wrapped Registerer in a modified way. The modified +// Collector adds the provided prefix to the name of all Metrics it collects. +// +// WrapRegistererWithPrefix is useful to have one place to prefix all metrics of +// a sub-system. To make this work, register metrics of the sub-system with the +// wrapping Registerer returned by WrapRegistererWithPrefix. It is rarely useful +// to use the same prefix for all metrics exposed. In particular, do not prefix +// metric names that are standardized across applications, as that would break +// horizontal monitoring, for example the metrics provided by the Go collector +// (see NewGoCollector) and the process collector (see NewProcessCollector). (In +// fact, those metrics are already prefixed with “go_” or “process_”, +// respectively.) +func WrapRegistererWithPrefix(prefix string, reg Registerer) Registerer { + return &wrappingRegisterer{ + wrappedRegisterer: reg, + prefix: prefix, + } +} + +type wrappingRegisterer struct { + wrappedRegisterer Registerer + prefix string + labels Labels +} + +func (r *wrappingRegisterer) Register(c Collector) error { + return r.wrappedRegisterer.Register(&wrappingCollector{ + wrappedCollector: c, + prefix: r.prefix, + labels: r.labels, + }) +} + +func (r *wrappingRegisterer) MustRegister(cs ...Collector) { + for _, c := range cs { + if err := r.Register(c); err != nil { + panic(err) + } + } +} + +func (r *wrappingRegisterer) Unregister(c Collector) bool { + return r.wrappedRegisterer.Unregister(&wrappingCollector{ + wrappedCollector: c, + prefix: r.prefix, + labels: r.labels, + }) +} + +type wrappingCollector struct { + wrappedCollector Collector + prefix string + labels Labels +} + +func (c *wrappingCollector) Collect(ch chan<- Metric) { + wrappedCh := make(chan Metric) + go func() { + c.wrappedCollector.Collect(wrappedCh) + close(wrappedCh) + }() + for m := range wrappedCh { + ch <- &wrappingMetric{ + wrappedMetric: m, + prefix: c.prefix, + labels: c.labels, + } + } +} + +func (c *wrappingCollector) Describe(ch chan<- *Desc) { + wrappedCh := make(chan *Desc) + go func() { + c.wrappedCollector.Describe(wrappedCh) + close(wrappedCh) + }() + for desc := range wrappedCh { + ch <- wrapDesc(desc, c.prefix, c.labels) + } +} + +type wrappingMetric struct { + wrappedMetric Metric + prefix string + labels Labels +} + +func (m *wrappingMetric) Desc() *Desc { + return wrapDesc(m.wrappedMetric.Desc(), m.prefix, m.labels) +} + +func (m *wrappingMetric) Write(out *dto.Metric) error { + if err := m.wrappedMetric.Write(out); err != nil { + return err + } + if len(m.labels) == 0 { + // No wrapping labels. + return nil + } + for ln, lv := range m.labels { + out.Label = append(out.Label, &dto.LabelPair{ + Name: proto.String(ln), + Value: proto.String(lv), + }) + } + sort.Sort(labelPairSorter(out.Label)) + return nil +} + +func wrapDesc(desc *Desc, prefix string, labels Labels) *Desc { + constLabels := Labels{} + for _, lp := range desc.constLabelPairs { + constLabels[*lp.Name] = *lp.Value + } + for ln, lv := range labels { + if _, alreadyUsed := constLabels[ln]; alreadyUsed { + return &Desc{ + fqName: desc.fqName, + help: desc.help, + variableLabels: desc.variableLabels, + constLabelPairs: desc.constLabelPairs, + err: fmt.Errorf("attempted wrapping with already existing label name %q", ln), + } + } + constLabels[ln] = lv + } + // NewDesc will do remaining validations. + newDesc := NewDesc(prefix+desc.fqName, desc.help, desc.variableLabels, constLabels) + // Propagate errors if there was any. This will override any errer + // created by NewDesc above, i.e. earlier errors get precedence. + if desc.err != nil { + newDesc.err = desc.err + } + return newDesc +} diff --git a/vendor/github.com/prometheus/client_model/go/metrics.pb.go b/vendor/github.com/prometheus/client_model/go/metrics.pb.go index b065f86..9805432 100644 --- a/vendor/github.com/prometheus/client_model/go/metrics.pb.go +++ b/vendor/github.com/prometheus/client_model/go/metrics.pb.go @@ -1,34 +1,23 @@ -// Code generated by protoc-gen-go. +// Code generated by protoc-gen-go. DO NOT EDIT. // source: metrics.proto -// DO NOT EDIT! -/* -Package io_prometheus_client is a generated protocol buffer package. - -It is generated from these files: - metrics.proto - -It has these top-level messages: - LabelPair - Gauge - Counter - Quantile - Summary - Untyped - Histogram - Bucket - Metric - MetricFamily -*/ -package io_prometheus_client +package io_prometheus_client // import "github.com/prometheus/client_model/go" import proto "github.com/golang/protobuf/proto" +import fmt "fmt" import math "math" // Reference imports to suppress errors if they are not otherwise used. var _ = proto.Marshal +var _ = fmt.Errorf var _ = math.Inf +// This is a compile-time assertion to ensure that this generated file +// is compatible with the proto package it is being compiled against. +// A compilation error at this line likely means your copy of the +// proto package needs to be updated. +const _ = proto.ProtoPackageIsVersion2 // please upgrade the proto package + type MetricType int32 const ( @@ -70,16 +59,41 @@ func (x *MetricType) UnmarshalJSON(data []byte) error { *x = MetricType(value) return nil } +func (MetricType) EnumDescriptor() ([]byte, []int) { + return fileDescriptor_metrics_c97c9a2b9560cb8f, []int{0} +} type LabelPair struct { - Name *string `protobuf:"bytes,1,opt,name=name" json:"name,omitempty"` - Value *string `protobuf:"bytes,2,opt,name=value" json:"value,omitempty"` - XXX_unrecognized []byte `json:"-"` + Name *string `protobuf:"bytes,1,opt,name=name" json:"name,omitempty"` + Value *string `protobuf:"bytes,2,opt,name=value" json:"value,omitempty"` + XXX_NoUnkeyedLiteral struct{} `json:"-"` + XXX_unrecognized []byte `json:"-"` + XXX_sizecache int32 `json:"-"` } func (m *LabelPair) Reset() { *m = LabelPair{} } func (m *LabelPair) String() string { return proto.CompactTextString(m) } func (*LabelPair) ProtoMessage() {} +func (*LabelPair) Descriptor() ([]byte, []int) { + return fileDescriptor_metrics_c97c9a2b9560cb8f, []int{0} +} +func (m *LabelPair) XXX_Unmarshal(b []byte) error { + return xxx_messageInfo_LabelPair.Unmarshal(m, b) +} +func (m *LabelPair) XXX_Marshal(b []byte, deterministic bool) ([]byte, error) { + return xxx_messageInfo_LabelPair.Marshal(b, m, deterministic) +} +func (dst *LabelPair) XXX_Merge(src proto.Message) { + xxx_messageInfo_LabelPair.Merge(dst, src) +} +func (m *LabelPair) XXX_Size() int { + return xxx_messageInfo_LabelPair.Size(m) +} +func (m *LabelPair) XXX_DiscardUnknown() { + xxx_messageInfo_LabelPair.DiscardUnknown(m) +} + +var xxx_messageInfo_LabelPair proto.InternalMessageInfo func (m *LabelPair) GetName() string { if m != nil && m.Name != nil { @@ -96,13 +110,35 @@ func (m *LabelPair) GetValue() string { } type Gauge struct { - Value *float64 `protobuf:"fixed64,1,opt,name=value" json:"value,omitempty"` - XXX_unrecognized []byte `json:"-"` + Value *float64 `protobuf:"fixed64,1,opt,name=value" json:"value,omitempty"` + XXX_NoUnkeyedLiteral struct{} `json:"-"` + XXX_unrecognized []byte `json:"-"` + XXX_sizecache int32 `json:"-"` } func (m *Gauge) Reset() { *m = Gauge{} } func (m *Gauge) String() string { return proto.CompactTextString(m) } func (*Gauge) ProtoMessage() {} +func (*Gauge) Descriptor() ([]byte, []int) { + return fileDescriptor_metrics_c97c9a2b9560cb8f, []int{1} +} +func (m *Gauge) XXX_Unmarshal(b []byte) error { + return xxx_messageInfo_Gauge.Unmarshal(m, b) +} +func (m *Gauge) XXX_Marshal(b []byte, deterministic bool) ([]byte, error) { + return xxx_messageInfo_Gauge.Marshal(b, m, deterministic) +} +func (dst *Gauge) XXX_Merge(src proto.Message) { + xxx_messageInfo_Gauge.Merge(dst, src) +} +func (m *Gauge) XXX_Size() int { + return xxx_messageInfo_Gauge.Size(m) +} +func (m *Gauge) XXX_DiscardUnknown() { + xxx_messageInfo_Gauge.DiscardUnknown(m) +} + +var xxx_messageInfo_Gauge proto.InternalMessageInfo func (m *Gauge) GetValue() float64 { if m != nil && m.Value != nil { @@ -112,13 +148,35 @@ func (m *Gauge) GetValue() float64 { } type Counter struct { - Value *float64 `protobuf:"fixed64,1,opt,name=value" json:"value,omitempty"` - XXX_unrecognized []byte `json:"-"` + Value *float64 `protobuf:"fixed64,1,opt,name=value" json:"value,omitempty"` + XXX_NoUnkeyedLiteral struct{} `json:"-"` + XXX_unrecognized []byte `json:"-"` + XXX_sizecache int32 `json:"-"` } func (m *Counter) Reset() { *m = Counter{} } func (m *Counter) String() string { return proto.CompactTextString(m) } func (*Counter) ProtoMessage() {} +func (*Counter) Descriptor() ([]byte, []int) { + return fileDescriptor_metrics_c97c9a2b9560cb8f, []int{2} +} +func (m *Counter) XXX_Unmarshal(b []byte) error { + return xxx_messageInfo_Counter.Unmarshal(m, b) +} +func (m *Counter) XXX_Marshal(b []byte, deterministic bool) ([]byte, error) { + return xxx_messageInfo_Counter.Marshal(b, m, deterministic) +} +func (dst *Counter) XXX_Merge(src proto.Message) { + xxx_messageInfo_Counter.Merge(dst, src) +} +func (m *Counter) XXX_Size() int { + return xxx_messageInfo_Counter.Size(m) +} +func (m *Counter) XXX_DiscardUnknown() { + xxx_messageInfo_Counter.DiscardUnknown(m) +} + +var xxx_messageInfo_Counter proto.InternalMessageInfo func (m *Counter) GetValue() float64 { if m != nil && m.Value != nil { @@ -128,14 +186,36 @@ func (m *Counter) GetValue() float64 { } type Quantile struct { - Quantile *float64 `protobuf:"fixed64,1,opt,name=quantile" json:"quantile,omitempty"` - Value *float64 `protobuf:"fixed64,2,opt,name=value" json:"value,omitempty"` - XXX_unrecognized []byte `json:"-"` + Quantile *float64 `protobuf:"fixed64,1,opt,name=quantile" json:"quantile,omitempty"` + Value *float64 `protobuf:"fixed64,2,opt,name=value" json:"value,omitempty"` + XXX_NoUnkeyedLiteral struct{} `json:"-"` + XXX_unrecognized []byte `json:"-"` + XXX_sizecache int32 `json:"-"` } func (m *Quantile) Reset() { *m = Quantile{} } func (m *Quantile) String() string { return proto.CompactTextString(m) } func (*Quantile) ProtoMessage() {} +func (*Quantile) Descriptor() ([]byte, []int) { + return fileDescriptor_metrics_c97c9a2b9560cb8f, []int{3} +} +func (m *Quantile) XXX_Unmarshal(b []byte) error { + return xxx_messageInfo_Quantile.Unmarshal(m, b) +} +func (m *Quantile) XXX_Marshal(b []byte, deterministic bool) ([]byte, error) { + return xxx_messageInfo_Quantile.Marshal(b, m, deterministic) +} +func (dst *Quantile) XXX_Merge(src proto.Message) { + xxx_messageInfo_Quantile.Merge(dst, src) +} +func (m *Quantile) XXX_Size() int { + return xxx_messageInfo_Quantile.Size(m) +} +func (m *Quantile) XXX_DiscardUnknown() { + xxx_messageInfo_Quantile.DiscardUnknown(m) +} + +var xxx_messageInfo_Quantile proto.InternalMessageInfo func (m *Quantile) GetQuantile() float64 { if m != nil && m.Quantile != nil { @@ -152,15 +232,37 @@ func (m *Quantile) GetValue() float64 { } type Summary struct { - SampleCount *uint64 `protobuf:"varint,1,opt,name=sample_count" json:"sample_count,omitempty"` - SampleSum *float64 `protobuf:"fixed64,2,opt,name=sample_sum" json:"sample_sum,omitempty"` - Quantile []*Quantile `protobuf:"bytes,3,rep,name=quantile" json:"quantile,omitempty"` - XXX_unrecognized []byte `json:"-"` + SampleCount *uint64 `protobuf:"varint,1,opt,name=sample_count,json=sampleCount" json:"sample_count,omitempty"` + SampleSum *float64 `protobuf:"fixed64,2,opt,name=sample_sum,json=sampleSum" json:"sample_sum,omitempty"` + Quantile []*Quantile `protobuf:"bytes,3,rep,name=quantile" json:"quantile,omitempty"` + XXX_NoUnkeyedLiteral struct{} `json:"-"` + XXX_unrecognized []byte `json:"-"` + XXX_sizecache int32 `json:"-"` } func (m *Summary) Reset() { *m = Summary{} } func (m *Summary) String() string { return proto.CompactTextString(m) } func (*Summary) ProtoMessage() {} +func (*Summary) Descriptor() ([]byte, []int) { + return fileDescriptor_metrics_c97c9a2b9560cb8f, []int{4} +} +func (m *Summary) XXX_Unmarshal(b []byte) error { + return xxx_messageInfo_Summary.Unmarshal(m, b) +} +func (m *Summary) XXX_Marshal(b []byte, deterministic bool) ([]byte, error) { + return xxx_messageInfo_Summary.Marshal(b, m, deterministic) +} +func (dst *Summary) XXX_Merge(src proto.Message) { + xxx_messageInfo_Summary.Merge(dst, src) +} +func (m *Summary) XXX_Size() int { + return xxx_messageInfo_Summary.Size(m) +} +func (m *Summary) XXX_DiscardUnknown() { + xxx_messageInfo_Summary.DiscardUnknown(m) +} + +var xxx_messageInfo_Summary proto.InternalMessageInfo func (m *Summary) GetSampleCount() uint64 { if m != nil && m.SampleCount != nil { @@ -184,13 +286,35 @@ func (m *Summary) GetQuantile() []*Quantile { } type Untyped struct { - Value *float64 `protobuf:"fixed64,1,opt,name=value" json:"value,omitempty"` - XXX_unrecognized []byte `json:"-"` + Value *float64 `protobuf:"fixed64,1,opt,name=value" json:"value,omitempty"` + XXX_NoUnkeyedLiteral struct{} `json:"-"` + XXX_unrecognized []byte `json:"-"` + XXX_sizecache int32 `json:"-"` } func (m *Untyped) Reset() { *m = Untyped{} } func (m *Untyped) String() string { return proto.CompactTextString(m) } func (*Untyped) ProtoMessage() {} +func (*Untyped) Descriptor() ([]byte, []int) { + return fileDescriptor_metrics_c97c9a2b9560cb8f, []int{5} +} +func (m *Untyped) XXX_Unmarshal(b []byte) error { + return xxx_messageInfo_Untyped.Unmarshal(m, b) +} +func (m *Untyped) XXX_Marshal(b []byte, deterministic bool) ([]byte, error) { + return xxx_messageInfo_Untyped.Marshal(b, m, deterministic) +} +func (dst *Untyped) XXX_Merge(src proto.Message) { + xxx_messageInfo_Untyped.Merge(dst, src) +} +func (m *Untyped) XXX_Size() int { + return xxx_messageInfo_Untyped.Size(m) +} +func (m *Untyped) XXX_DiscardUnknown() { + xxx_messageInfo_Untyped.DiscardUnknown(m) +} + +var xxx_messageInfo_Untyped proto.InternalMessageInfo func (m *Untyped) GetValue() float64 { if m != nil && m.Value != nil { @@ -200,15 +324,37 @@ func (m *Untyped) GetValue() float64 { } type Histogram struct { - SampleCount *uint64 `protobuf:"varint,1,opt,name=sample_count" json:"sample_count,omitempty"` - SampleSum *float64 `protobuf:"fixed64,2,opt,name=sample_sum" json:"sample_sum,omitempty"` - Bucket []*Bucket `protobuf:"bytes,3,rep,name=bucket" json:"bucket,omitempty"` - XXX_unrecognized []byte `json:"-"` + SampleCount *uint64 `protobuf:"varint,1,opt,name=sample_count,json=sampleCount" json:"sample_count,omitempty"` + SampleSum *float64 `protobuf:"fixed64,2,opt,name=sample_sum,json=sampleSum" json:"sample_sum,omitempty"` + Bucket []*Bucket `protobuf:"bytes,3,rep,name=bucket" json:"bucket,omitempty"` + XXX_NoUnkeyedLiteral struct{} `json:"-"` + XXX_unrecognized []byte `json:"-"` + XXX_sizecache int32 `json:"-"` } func (m *Histogram) Reset() { *m = Histogram{} } func (m *Histogram) String() string { return proto.CompactTextString(m) } func (*Histogram) ProtoMessage() {} +func (*Histogram) Descriptor() ([]byte, []int) { + return fileDescriptor_metrics_c97c9a2b9560cb8f, []int{6} +} +func (m *Histogram) XXX_Unmarshal(b []byte) error { + return xxx_messageInfo_Histogram.Unmarshal(m, b) +} +func (m *Histogram) XXX_Marshal(b []byte, deterministic bool) ([]byte, error) { + return xxx_messageInfo_Histogram.Marshal(b, m, deterministic) +} +func (dst *Histogram) XXX_Merge(src proto.Message) { + xxx_messageInfo_Histogram.Merge(dst, src) +} +func (m *Histogram) XXX_Size() int { + return xxx_messageInfo_Histogram.Size(m) +} +func (m *Histogram) XXX_DiscardUnknown() { + xxx_messageInfo_Histogram.DiscardUnknown(m) +} + +var xxx_messageInfo_Histogram proto.InternalMessageInfo func (m *Histogram) GetSampleCount() uint64 { if m != nil && m.SampleCount != nil { @@ -232,14 +378,36 @@ func (m *Histogram) GetBucket() []*Bucket { } type Bucket struct { - CumulativeCount *uint64 `protobuf:"varint,1,opt,name=cumulative_count" json:"cumulative_count,omitempty"` - UpperBound *float64 `protobuf:"fixed64,2,opt,name=upper_bound" json:"upper_bound,omitempty"` - XXX_unrecognized []byte `json:"-"` + CumulativeCount *uint64 `protobuf:"varint,1,opt,name=cumulative_count,json=cumulativeCount" json:"cumulative_count,omitempty"` + UpperBound *float64 `protobuf:"fixed64,2,opt,name=upper_bound,json=upperBound" json:"upper_bound,omitempty"` + XXX_NoUnkeyedLiteral struct{} `json:"-"` + XXX_unrecognized []byte `json:"-"` + XXX_sizecache int32 `json:"-"` } func (m *Bucket) Reset() { *m = Bucket{} } func (m *Bucket) String() string { return proto.CompactTextString(m) } func (*Bucket) ProtoMessage() {} +func (*Bucket) Descriptor() ([]byte, []int) { + return fileDescriptor_metrics_c97c9a2b9560cb8f, []int{7} +} +func (m *Bucket) XXX_Unmarshal(b []byte) error { + return xxx_messageInfo_Bucket.Unmarshal(m, b) +} +func (m *Bucket) XXX_Marshal(b []byte, deterministic bool) ([]byte, error) { + return xxx_messageInfo_Bucket.Marshal(b, m, deterministic) +} +func (dst *Bucket) XXX_Merge(src proto.Message) { + xxx_messageInfo_Bucket.Merge(dst, src) +} +func (m *Bucket) XXX_Size() int { + return xxx_messageInfo_Bucket.Size(m) +} +func (m *Bucket) XXX_DiscardUnknown() { + xxx_messageInfo_Bucket.DiscardUnknown(m) +} + +var xxx_messageInfo_Bucket proto.InternalMessageInfo func (m *Bucket) GetCumulativeCount() uint64 { if m != nil && m.CumulativeCount != nil { @@ -256,19 +424,41 @@ func (m *Bucket) GetUpperBound() float64 { } type Metric struct { - Label []*LabelPair `protobuf:"bytes,1,rep,name=label" json:"label,omitempty"` - Gauge *Gauge `protobuf:"bytes,2,opt,name=gauge" json:"gauge,omitempty"` - Counter *Counter `protobuf:"bytes,3,opt,name=counter" json:"counter,omitempty"` - Summary *Summary `protobuf:"bytes,4,opt,name=summary" json:"summary,omitempty"` - Untyped *Untyped `protobuf:"bytes,5,opt,name=untyped" json:"untyped,omitempty"` - Histogram *Histogram `protobuf:"bytes,7,opt,name=histogram" json:"histogram,omitempty"` - TimestampMs *int64 `protobuf:"varint,6,opt,name=timestamp_ms" json:"timestamp_ms,omitempty"` - XXX_unrecognized []byte `json:"-"` + Label []*LabelPair `protobuf:"bytes,1,rep,name=label" json:"label,omitempty"` + Gauge *Gauge `protobuf:"bytes,2,opt,name=gauge" json:"gauge,omitempty"` + Counter *Counter `protobuf:"bytes,3,opt,name=counter" json:"counter,omitempty"` + Summary *Summary `protobuf:"bytes,4,opt,name=summary" json:"summary,omitempty"` + Untyped *Untyped `protobuf:"bytes,5,opt,name=untyped" json:"untyped,omitempty"` + Histogram *Histogram `protobuf:"bytes,7,opt,name=histogram" json:"histogram,omitempty"` + TimestampMs *int64 `protobuf:"varint,6,opt,name=timestamp_ms,json=timestampMs" json:"timestamp_ms,omitempty"` + XXX_NoUnkeyedLiteral struct{} `json:"-"` + XXX_unrecognized []byte `json:"-"` + XXX_sizecache int32 `json:"-"` } func (m *Metric) Reset() { *m = Metric{} } func (m *Metric) String() string { return proto.CompactTextString(m) } func (*Metric) ProtoMessage() {} +func (*Metric) Descriptor() ([]byte, []int) { + return fileDescriptor_metrics_c97c9a2b9560cb8f, []int{8} +} +func (m *Metric) XXX_Unmarshal(b []byte) error { + return xxx_messageInfo_Metric.Unmarshal(m, b) +} +func (m *Metric) XXX_Marshal(b []byte, deterministic bool) ([]byte, error) { + return xxx_messageInfo_Metric.Marshal(b, m, deterministic) +} +func (dst *Metric) XXX_Merge(src proto.Message) { + xxx_messageInfo_Metric.Merge(dst, src) +} +func (m *Metric) XXX_Size() int { + return xxx_messageInfo_Metric.Size(m) +} +func (m *Metric) XXX_DiscardUnknown() { + xxx_messageInfo_Metric.DiscardUnknown(m) +} + +var xxx_messageInfo_Metric proto.InternalMessageInfo func (m *Metric) GetLabel() []*LabelPair { if m != nil { @@ -320,16 +510,38 @@ func (m *Metric) GetTimestampMs() int64 { } type MetricFamily struct { - Name *string `protobuf:"bytes,1,opt,name=name" json:"name,omitempty"` - Help *string `protobuf:"bytes,2,opt,name=help" json:"help,omitempty"` - Type *MetricType `protobuf:"varint,3,opt,name=type,enum=io.prometheus.client.MetricType" json:"type,omitempty"` - Metric []*Metric `protobuf:"bytes,4,rep,name=metric" json:"metric,omitempty"` - XXX_unrecognized []byte `json:"-"` + Name *string `protobuf:"bytes,1,opt,name=name" json:"name,omitempty"` + Help *string `protobuf:"bytes,2,opt,name=help" json:"help,omitempty"` + Type *MetricType `protobuf:"varint,3,opt,name=type,enum=io.prometheus.client.MetricType" json:"type,omitempty"` + Metric []*Metric `protobuf:"bytes,4,rep,name=metric" json:"metric,omitempty"` + XXX_NoUnkeyedLiteral struct{} `json:"-"` + XXX_unrecognized []byte `json:"-"` + XXX_sizecache int32 `json:"-"` } func (m *MetricFamily) Reset() { *m = MetricFamily{} } func (m *MetricFamily) String() string { return proto.CompactTextString(m) } func (*MetricFamily) ProtoMessage() {} +func (*MetricFamily) Descriptor() ([]byte, []int) { + return fileDescriptor_metrics_c97c9a2b9560cb8f, []int{9} +} +func (m *MetricFamily) XXX_Unmarshal(b []byte) error { + return xxx_messageInfo_MetricFamily.Unmarshal(m, b) +} +func (m *MetricFamily) XXX_Marshal(b []byte, deterministic bool) ([]byte, error) { + return xxx_messageInfo_MetricFamily.Marshal(b, m, deterministic) +} +func (dst *MetricFamily) XXX_Merge(src proto.Message) { + xxx_messageInfo_MetricFamily.Merge(dst, src) +} +func (m *MetricFamily) XXX_Size() int { + return xxx_messageInfo_MetricFamily.Size(m) +} +func (m *MetricFamily) XXX_DiscardUnknown() { + xxx_messageInfo_MetricFamily.DiscardUnknown(m) +} + +var xxx_messageInfo_MetricFamily proto.InternalMessageInfo func (m *MetricFamily) GetName() string { if m != nil && m.Name != nil { @@ -360,5 +572,58 @@ func (m *MetricFamily) GetMetric() []*Metric { } func init() { + proto.RegisterType((*LabelPair)(nil), "io.prometheus.client.LabelPair") + proto.RegisterType((*Gauge)(nil), "io.prometheus.client.Gauge") + proto.RegisterType((*Counter)(nil), "io.prometheus.client.Counter") + proto.RegisterType((*Quantile)(nil), "io.prometheus.client.Quantile") + proto.RegisterType((*Summary)(nil), "io.prometheus.client.Summary") + proto.RegisterType((*Untyped)(nil), "io.prometheus.client.Untyped") + proto.RegisterType((*Histogram)(nil), "io.prometheus.client.Histogram") + proto.RegisterType((*Bucket)(nil), "io.prometheus.client.Bucket") + proto.RegisterType((*Metric)(nil), "io.prometheus.client.Metric") + proto.RegisterType((*MetricFamily)(nil), "io.prometheus.client.MetricFamily") proto.RegisterEnum("io.prometheus.client.MetricType", MetricType_name, MetricType_value) } + +func init() { proto.RegisterFile("metrics.proto", fileDescriptor_metrics_c97c9a2b9560cb8f) } + +var fileDescriptor_metrics_c97c9a2b9560cb8f = []byte{ + // 591 bytes of a gzipped FileDescriptorProto + 0x1f, 0x8b, 0x08, 0x00, 0x00, 0x00, 0x00, 0x00, 0x02, 0xff, 0xac, 0x54, 0x4f, 0x4f, 0xdb, 0x4e, + 0x14, 0xfc, 0x99, 0xd8, 0x09, 0x7e, 0x86, 0x5f, 0xad, 0x15, 0x07, 0xab, 0x2d, 0x25, 0xcd, 0x89, + 0xf6, 0x10, 0x54, 0x04, 0xaa, 0x44, 0xdb, 0x03, 0x50, 0x1a, 0x2a, 0xd5, 0x40, 0x37, 0xc9, 0x81, + 0x5e, 0xac, 0x8d, 0x59, 0x25, 0x56, 0xbd, 0xb6, 0x6b, 0xef, 0x22, 0xe5, 0xdc, 0x43, 0xbf, 0x47, + 0xbf, 0x68, 0xab, 0xfd, 0xe3, 0x18, 0x24, 0xc3, 0xa9, 0xb7, 0xb7, 0xf3, 0x66, 0xde, 0x8e, 0x77, + 0xc7, 0x0b, 0x9b, 0x8c, 0xf2, 0x32, 0x89, 0xab, 0x61, 0x51, 0xe6, 0x3c, 0x47, 0x5b, 0x49, 0x2e, + 0x2b, 0x46, 0xf9, 0x82, 0x8a, 0x6a, 0x18, 0xa7, 0x09, 0xcd, 0xf8, 0xe0, 0x10, 0xdc, 0x2f, 0x64, + 0x46, 0xd3, 0x2b, 0x92, 0x94, 0x08, 0x81, 0x9d, 0x11, 0x46, 0x03, 0xab, 0x6f, 0xed, 0xba, 0x58, + 0xd5, 0x68, 0x0b, 0x9c, 0x5b, 0x92, 0x0a, 0x1a, 0xac, 0x29, 0x50, 0x2f, 0x06, 0xdb, 0xe0, 0x8c, + 0x88, 0x98, 0xdf, 0x69, 0x4b, 0x8d, 0x55, 0xb7, 0x77, 0xa0, 0x77, 0x9a, 0x8b, 0x8c, 0xd3, 0xf2, + 0x01, 0xc2, 0x7b, 0x58, 0xff, 0x2a, 0x48, 0xc6, 0x93, 0x94, 0xa2, 0xa7, 0xb0, 0xfe, 0xc3, 0xd4, + 0x86, 0xb4, 0x5a, 0xdf, 0xdf, 0x7d, 0xa5, 0xfe, 0x65, 0x41, 0x6f, 0x2c, 0x18, 0x23, 0xe5, 0x12, + 0xbd, 0x84, 0x8d, 0x8a, 0xb0, 0x22, 0xa5, 0x51, 0x2c, 0x77, 0x54, 0x13, 0x6c, 0xec, 0x69, 0x4c, + 0x99, 0x40, 0xdb, 0x00, 0x86, 0x52, 0x09, 0x66, 0x26, 0xb9, 0x1a, 0x19, 0x0b, 0x86, 0x8e, 0xee, + 0xec, 0xdf, 0xe9, 0x77, 0x76, 0xbd, 0xfd, 0x17, 0xc3, 0xb6, 0xb3, 0x1a, 0xd6, 0x8e, 0x1b, 0x7f, + 0xf2, 0x43, 0xa7, 0x19, 0x5f, 0x16, 0xf4, 0xe6, 0x81, 0x0f, 0xfd, 0x69, 0x81, 0x7b, 0x9e, 0x54, + 0x3c, 0x9f, 0x97, 0x84, 0xfd, 0x03, 0xb3, 0x07, 0xd0, 0x9d, 0x89, 0xf8, 0x3b, 0xe5, 0xc6, 0xea, + 0xf3, 0x76, 0xab, 0x27, 0x8a, 0x83, 0x0d, 0x77, 0x30, 0x81, 0xae, 0x46, 0xd0, 0x2b, 0xf0, 0x63, + 0xc1, 0x44, 0x4a, 0x78, 0x72, 0x7b, 0xdf, 0xc5, 0x93, 0x06, 0xd7, 0x4e, 0x76, 0xc0, 0x13, 0x45, + 0x41, 0xcb, 0x68, 0x96, 0x8b, 0xec, 0xc6, 0x58, 0x01, 0x05, 0x9d, 0x48, 0x64, 0xf0, 0x67, 0x0d, + 0xba, 0xa1, 0xca, 0x18, 0x3a, 0x04, 0x27, 0x95, 0x31, 0x0a, 0x2c, 0xe5, 0x6a, 0xa7, 0xdd, 0xd5, + 0x2a, 0x69, 0x58, 0xb3, 0xd1, 0x1b, 0x70, 0xe6, 0x32, 0x46, 0x6a, 0xb8, 0xb7, 0xff, 0xac, 0x5d, + 0xa6, 0x92, 0x86, 0x35, 0x13, 0xbd, 0x85, 0x5e, 0xac, 0xa3, 0x15, 0x74, 0x94, 0x68, 0xbb, 0x5d, + 0x64, 0xf2, 0x87, 0x6b, 0xb6, 0x14, 0x56, 0x3a, 0x33, 0x81, 0xfd, 0x98, 0xd0, 0x04, 0x0b, 0xd7, + 0x6c, 0x29, 0x14, 0xfa, 0x8e, 0x03, 0xe7, 0x31, 0xa1, 0x09, 0x02, 0xae, 0xd9, 0xe8, 0x03, 0xb8, + 0x8b, 0xfa, 0xea, 0x83, 0x9e, 0x92, 0x3e, 0x70, 0x30, 0xab, 0x84, 0xe0, 0x46, 0x21, 0xc3, 0xc2, + 0x13, 0x46, 0x2b, 0x4e, 0x58, 0x11, 0xb1, 0x2a, 0xe8, 0xf6, 0xad, 0xdd, 0x0e, 0xf6, 0x56, 0x58, + 0x58, 0x0d, 0x7e, 0x5b, 0xb0, 0xa1, 0x6f, 0xe0, 0x13, 0x61, 0x49, 0xba, 0x6c, 0xfd, 0x83, 0x11, + 0xd8, 0x0b, 0x9a, 0x16, 0xe6, 0x07, 0x56, 0x35, 0x3a, 0x00, 0x5b, 0x7a, 0x54, 0x47, 0xf8, 0xff, + 0x7e, 0xbf, 0xdd, 0x95, 0x9e, 0x3c, 0x59, 0x16, 0x14, 0x2b, 0xb6, 0x0c, 0x9f, 0x7e, 0x53, 0x02, + 0xfb, 0xb1, 0xf0, 0x69, 0x1d, 0x36, 0xdc, 0xd7, 0x21, 0x40, 0x33, 0x09, 0x79, 0xd0, 0x3b, 0xbd, + 0x9c, 0x5e, 0x4c, 0xce, 0xb0, 0xff, 0x1f, 0x72, 0xc1, 0x19, 0x1d, 0x4f, 0x47, 0x67, 0xbe, 0x25, + 0xf1, 0xf1, 0x34, 0x0c, 0x8f, 0xf1, 0xb5, 0xbf, 0x26, 0x17, 0xd3, 0x8b, 0xc9, 0xf5, 0xd5, 0xd9, + 0x47, 0xbf, 0x83, 0x36, 0xc1, 0x3d, 0xff, 0x3c, 0x9e, 0x5c, 0x8e, 0xf0, 0x71, 0xe8, 0xdb, 0x27, + 0x18, 0x5a, 0x5f, 0xb2, 0x6f, 0x47, 0xf3, 0x84, 0x2f, 0xc4, 0x6c, 0x18, 0xe7, 0x6c, 0xaf, 0xe9, + 0xee, 0xe9, 0x6e, 0xc4, 0xf2, 0x1b, 0x9a, 0xee, 0xcd, 0xf3, 0x77, 0x49, 0x1e, 0x35, 0xdd, 0x48, + 0x77, 0xff, 0x06, 0x00, 0x00, 0xff, 0xff, 0x45, 0x21, 0x7f, 0x64, 0x2b, 0x05, 0x00, 0x00, +} diff --git a/vendor/github.com/prometheus/common/expfmt/decode.go b/vendor/github.com/prometheus/common/expfmt/decode.go index a7a42d5..c092723 100644 --- a/vendor/github.com/prometheus/common/expfmt/decode.go +++ b/vendor/github.com/prometheus/common/expfmt/decode.go @@ -164,9 +164,9 @@ func (sd *SampleDecoder) Decode(s *model.Vector) error { } // ExtractSamples builds a slice of samples from the provided metric -// families. If an error occurs during sample extraction, it continues to +// families. If an error occurrs during sample extraction, it continues to // extract from the remaining metric families. The returned error is the last -// error that has occured. +// error that has occurred. func ExtractSamples(o *DecodeOptions, fams ...*dto.MetricFamily) (model.Vector, error) { var ( all model.Vector diff --git a/vendor/github.com/prometheus/common/expfmt/expfmt.go b/vendor/github.com/prometheus/common/expfmt/expfmt.go index 371ac75..c71bcb9 100644 --- a/vendor/github.com/prometheus/common/expfmt/expfmt.go +++ b/vendor/github.com/prometheus/common/expfmt/expfmt.go @@ -26,7 +26,7 @@ const ( // The Content-Type values for the different wire protocols. FmtUnknown Format = `` - FmtText Format = `text/plain; version=` + TextVersion + FmtText Format = `text/plain; version=` + TextVersion + `; charset=utf-8` FmtProtoDelim Format = ProtoFmt + ` encoding=delimited` FmtProtoText Format = ProtoFmt + ` encoding=text` FmtProtoCompact Format = ProtoFmt + ` encoding=compact-text` diff --git a/vendor/github.com/prometheus/common/expfmt/text_create.go b/vendor/github.com/prometheus/common/expfmt/text_create.go index f11321c..8e473d0 100644 --- a/vendor/github.com/prometheus/common/expfmt/text_create.go +++ b/vendor/github.com/prometheus/common/expfmt/text_create.go @@ -14,13 +14,45 @@ package expfmt import ( + "bytes" "fmt" "io" "math" + "strconv" "strings" + "sync" + + "github.com/prometheus/common/model" dto "github.com/prometheus/client_model/go" - "github.com/prometheus/common/model" +) + +// enhancedWriter has all the enhanced write functions needed here. bytes.Buffer +// implements it. +type enhancedWriter interface { + io.Writer + WriteRune(r rune) (n int, err error) + WriteString(s string) (n int, err error) + WriteByte(c byte) error +} + +const ( + initialBufSize = 512 + initialNumBufSize = 24 +) + +var ( + bufPool = sync.Pool{ + New: func() interface{} { + return bytes.NewBuffer(make([]byte, 0, initialBufSize)) + }, + } + numBufPool = sync.Pool{ + New: func() interface{} { + b := make([]byte, 0, initialNumBufSize) + return &b + }, + } ) // MetricFamilyToText converts a MetricFamily proto message into text format and @@ -32,37 +64,92 @@ import ( // will result in invalid text format output. // // This method fulfills the type 'prometheus.encoder'. -func MetricFamilyToText(out io.Writer, in *dto.MetricFamily) (int, error) { - var written int - +func MetricFamilyToText(out io.Writer, in *dto.MetricFamily) (written int, err error) { // Fail-fast checks. if len(in.Metric) == 0 { - return written, fmt.Errorf("MetricFamily has no metrics: %s", in) + return 0, fmt.Errorf("MetricFamily has no metrics: %s", in) } name := in.GetName() if name == "" { - return written, fmt.Errorf("MetricFamily has no name: %s", in) + return 0, fmt.Errorf("MetricFamily has no name: %s", in) } + // Try the interface upgrade. If it doesn't work, we'll use a + // bytes.Buffer from the sync.Pool and write out its content to out in a + // single go in the end. + w, ok := out.(enhancedWriter) + if !ok { + b := bufPool.Get().(*bytes.Buffer) + b.Reset() + w = b + defer func() { + bWritten, bErr := out.Write(b.Bytes()) + written = bWritten + if err == nil { + err = bErr + } + bufPool.Put(b) + }() + } + + var n int + // Comments, first HELP, then TYPE. if in.Help != nil { - n, err := fmt.Fprintf( - out, "# HELP %s %s\n", - name, escapeString(*in.Help, false), - ) + n, err = w.WriteString("# HELP ") written += n if err != nil { - return written, err + return + } + n, err = w.WriteString(name) + written += n + if err != nil { + return + } + err = w.WriteByte(' ') + written++ + if err != nil { + return + } + n, err = writeEscapedString(w, *in.Help, false) + written += n + if err != nil { + return + } + err = w.WriteByte('\n') + written++ + if err != nil { + return } } - metricType := in.GetType() - n, err := fmt.Fprintf( - out, "# TYPE %s %s\n", - name, strings.ToLower(metricType.String()), - ) + n, err = w.WriteString("# TYPE ") written += n if err != nil { - return written, err + return + } + n, err = w.WriteString(name) + written += n + if err != nil { + return + } + metricType := in.GetType() + switch metricType { + case dto.MetricType_COUNTER: + n, err = w.WriteString(" counter\n") + case dto.MetricType_GAUGE: + n, err = w.WriteString(" gauge\n") + case dto.MetricType_SUMMARY: + n, err = w.WriteString(" summary\n") + case dto.MetricType_UNTYPED: + n, err = w.WriteString(" untyped\n") + case dto.MetricType_HISTOGRAM: + n, err = w.WriteString(" histogram\n") + default: + return written, fmt.Errorf("unknown metric type %s", metricType.String()) + } + written += n + if err != nil { + return } // Finally the samples, one line for each. @@ -75,9 +162,8 @@ func MetricFamilyToText(out io.Writer, in *dto.MetricFamily) (int, error) { ) } n, err = writeSample( - name, metric, "", "", + w, name, "", metric, "", 0, metric.Counter.GetValue(), - out, ) case dto.MetricType_GAUGE: if metric.Gauge == nil { @@ -86,9 +172,8 @@ func MetricFamilyToText(out io.Writer, in *dto.MetricFamily) (int, error) { ) } n, err = writeSample( - name, metric, "", "", + w, name, "", metric, "", 0, metric.Gauge.GetValue(), - out, ) case dto.MetricType_UNTYPED: if metric.Untyped == nil { @@ -97,9 +182,8 @@ func MetricFamilyToText(out io.Writer, in *dto.MetricFamily) (int, error) { ) } n, err = writeSample( - name, metric, "", "", + w, name, "", metric, "", 0, metric.Untyped.GetValue(), - out, ) case dto.MetricType_SUMMARY: if metric.Summary == nil { @@ -109,29 +193,26 @@ func MetricFamilyToText(out io.Writer, in *dto.MetricFamily) (int, error) { } for _, q := range metric.Summary.Quantile { n, err = writeSample( - name, metric, - model.QuantileLabel, fmt.Sprint(q.GetQuantile()), + w, name, "", metric, + model.QuantileLabel, q.GetQuantile(), q.GetValue(), - out, ) written += n if err != nil { - return written, err + return } } n, err = writeSample( - name+"_sum", metric, "", "", + w, name, "_sum", metric, "", 0, metric.Summary.GetSampleSum(), - out, ) - if err != nil { - return written, err - } written += n + if err != nil { + return + } n, err = writeSample( - name+"_count", metric, "", "", + w, name, "_count", metric, "", 0, float64(metric.Summary.GetSampleCount()), - out, ) case dto.MetricType_HISTOGRAM: if metric.Histogram == nil { @@ -140,46 +221,42 @@ func MetricFamilyToText(out io.Writer, in *dto.MetricFamily) (int, error) { ) } infSeen := false - for _, q := range metric.Histogram.Bucket { + for _, b := range metric.Histogram.Bucket { n, err = writeSample( - name+"_bucket", metric, - model.BucketLabel, fmt.Sprint(q.GetUpperBound()), - float64(q.GetCumulativeCount()), - out, + w, name, "_bucket", metric, + model.BucketLabel, b.GetUpperBound(), + float64(b.GetCumulativeCount()), ) written += n if err != nil { - return written, err + return } - if math.IsInf(q.GetUpperBound(), +1) { + if math.IsInf(b.GetUpperBound(), +1) { infSeen = true } } if !infSeen { n, err = writeSample( - name+"_bucket", metric, - model.BucketLabel, "+Inf", + w, name, "_bucket", metric, + model.BucketLabel, math.Inf(+1), float64(metric.Histogram.GetSampleCount()), - out, ) - if err != nil { - return written, err - } written += n + if err != nil { + return + } } n, err = writeSample( - name+"_sum", metric, "", "", + w, name, "_sum", metric, "", 0, metric.Histogram.GetSampleSum(), - out, ) - if err != nil { - return written, err - } written += n + if err != nil { + return + } n, err = writeSample( - name+"_count", metric, "", "", + w, name, "_count", metric, "", 0, float64(metric.Histogram.GetSampleCount()), - out, ) default: return written, fmt.Errorf( @@ -188,116 +265,204 @@ func MetricFamilyToText(out io.Writer, in *dto.MetricFamily) (int, error) { } written += n if err != nil { - return written, err + return } } - return written, nil + return } -// writeSample writes a single sample in text format to out, given the metric +// writeSample writes a single sample in text format to w, given the metric // name, the metric proto message itself, optionally an additional label name -// and value (use empty strings if not required), and the value. The function -// returns the number of bytes written and any error encountered. +// with a float64 value (use empty string as label name if not required), and +// the value. The function returns the number of bytes written and any error +// encountered. func writeSample( - name string, + w enhancedWriter, + name, suffix string, metric *dto.Metric, - additionalLabelName, additionalLabelValue string, + additionalLabelName string, additionalLabelValue float64, value float64, - out io.Writer, ) (int, error) { var written int - n, err := fmt.Fprint(out, name) + n, err := w.WriteString(name) written += n if err != nil { return written, err } - n, err = labelPairsToText( - metric.Label, - additionalLabelName, additionalLabelValue, - out, - ) - written += n - if err != nil { - return written, err - } - n, err = fmt.Fprintf(out, " %v", value) - written += n - if err != nil { - return written, err - } - if metric.TimestampMs != nil { - n, err = fmt.Fprintf(out, " %v", *metric.TimestampMs) + if suffix != "" { + n, err = w.WriteString(suffix) written += n if err != nil { return written, err } } - n, err = out.Write([]byte{'\n'}) + n, err = writeLabelPairs( + w, metric.Label, additionalLabelName, additionalLabelValue, + ) written += n if err != nil { return written, err } + err = w.WriteByte(' ') + written++ + if err != nil { + return written, err + } + n, err = writeFloat(w, value) + written += n + if err != nil { + return written, err + } + if metric.TimestampMs != nil { + err = w.WriteByte(' ') + written++ + if err != nil { + return written, err + } + n, err = writeInt(w, *metric.TimestampMs) + written += n + if err != nil { + return written, err + } + } + err = w.WriteByte('\n') + written++ + if err != nil { + return written, err + } return written, nil } -// labelPairsToText converts a slice of LabelPair proto messages plus the +// writeLabelPairs converts a slice of LabelPair proto messages plus the // explicitly given additional label pair into text formatted as required by the -// text format and writes it to 'out'. An empty slice in combination with an -// empty string 'additionalLabelName' results in nothing being -// written. Otherwise, the label pairs are written, escaped as required by the -// text format, and enclosed in '{...}'. The function returns the number of -// bytes written and any error encountered. -func labelPairsToText( +// text format and writes it to 'w'. An empty slice in combination with an empty +// string 'additionalLabelName' results in nothing being written. Otherwise, the +// label pairs are written, escaped as required by the text format, and enclosed +// in '{...}'. The function returns the number of bytes written and any error +// encountered. +func writeLabelPairs( + w enhancedWriter, in []*dto.LabelPair, - additionalLabelName, additionalLabelValue string, - out io.Writer, + additionalLabelName string, additionalLabelValue float64, ) (int, error) { if len(in) == 0 && additionalLabelName == "" { return 0, nil } - var written int - separator := '{' + var ( + written int + separator byte = '{' + ) for _, lp := range in { - n, err := fmt.Fprintf( - out, `%c%s="%s"`, - separator, lp.GetName(), escapeString(lp.GetValue(), true), - ) + err := w.WriteByte(separator) + written++ + if err != nil { + return written, err + } + n, err := w.WriteString(lp.GetName()) written += n if err != nil { return written, err } + n, err = w.WriteString(`="`) + written += n + if err != nil { + return written, err + } + n, err = writeEscapedString(w, lp.GetValue(), true) + written += n + if err != nil { + return written, err + } + err = w.WriteByte('"') + written++ + if err != nil { + return written, err + } separator = ',' } if additionalLabelName != "" { - n, err := fmt.Fprintf( - out, `%c%s="%s"`, - separator, additionalLabelName, - escapeString(additionalLabelValue, true), - ) + err := w.WriteByte(separator) + written++ + if err != nil { + return written, err + } + n, err := w.WriteString(additionalLabelName) written += n if err != nil { return written, err } + n, err = w.WriteString(`="`) + written += n + if err != nil { + return written, err + } + n, err = writeFloat(w, additionalLabelValue) + written += n + if err != nil { + return written, err + } + err = w.WriteByte('"') + written++ + if err != nil { + return written, err + } } - n, err := out.Write([]byte{'}'}) - written += n + err := w.WriteByte('}') + written++ if err != nil { return written, err } return written, nil } +// writeEscapedString replaces '\' by '\\', new line character by '\n', and - if +// includeDoubleQuote is true - '"' by '\"'. var ( - escape = strings.NewReplacer("\\", `\\`, "\n", `\n`) - escapeWithDoubleQuote = strings.NewReplacer("\\", `\\`, "\n", `\n`, "\"", `\"`) + escaper = strings.NewReplacer("\\", `\\`, "\n", `\n`) + quotedEscaper = strings.NewReplacer("\\", `\\`, "\n", `\n`, "\"", `\"`) ) -// escapeString replaces '\' by '\\', new line character by '\n', and - if -// includeDoubleQuote is true - '"' by '\"'. -func escapeString(v string, includeDoubleQuote bool) string { +func writeEscapedString(w enhancedWriter, v string, includeDoubleQuote bool) (int, error) { if includeDoubleQuote { - return escapeWithDoubleQuote.Replace(v) + return quotedEscaper.WriteString(w, v) + } else { + return escaper.WriteString(w, v) } - - return escape.Replace(v) +} + +// writeFloat is equivalent to fmt.Fprint with a float64 argument but hardcodes +// a few common cases for increased efficiency. For non-hardcoded cases, it uses +// strconv.AppendFloat to avoid allocations, similar to writeInt. +func writeFloat(w enhancedWriter, f float64) (int, error) { + switch { + case f == 1: + return 1, w.WriteByte('1') + case f == 0: + return 1, w.WriteByte('0') + case f == -1: + return w.WriteString("-1") + case math.IsNaN(f): + return w.WriteString("NaN") + case math.IsInf(f, +1): + return w.WriteString("+Inf") + case math.IsInf(f, -1): + return w.WriteString("-Inf") + default: + bp := numBufPool.Get().(*[]byte) + *bp = strconv.AppendFloat((*bp)[:0], f, 'g', -1, 64) + written, err := w.Write(*bp) + numBufPool.Put(bp) + return written, err + } +} + +// writeInt is equivalent to fmt.Fprint with an int64 argument but uses +// strconv.AppendInt with a byte slice taken from a sync.Pool to avoid +// allocations. +func writeInt(w enhancedWriter, i int64) (int, error) { + bp := numBufPool.Get().(*[]byte) + *bp = strconv.AppendInt((*bp)[:0], i, 10) + written, err := w.Write(*bp) + numBufPool.Put(bp) + return written, err } diff --git a/vendor/github.com/prometheus/common/expfmt/text_parse.go b/vendor/github.com/prometheus/common/expfmt/text_parse.go index 54bcfde..ec3d86b 100644 --- a/vendor/github.com/prometheus/common/expfmt/text_parse.go +++ b/vendor/github.com/prometheus/common/expfmt/text_parse.go @@ -359,7 +359,7 @@ func (p *TextParser) startLabelValue() stateFn { } return p.readingValue default: - p.parseError(fmt.Sprintf("unexpected end of label value %q", p.currentLabelPair.Value)) + p.parseError(fmt.Sprintf("unexpected end of label value %q", p.currentLabelPair.GetValue())) return nil } } @@ -556,8 +556,8 @@ func (p *TextParser) readTokenUntilWhitespace() { // byte considered is the byte already read (now in p.currentByte). The first // newline byte encountered is still copied into p.currentByte, but not into // p.currentToken. If recognizeEscapeSequence is true, two escape sequences are -// recognized: '\\' tranlates into '\', and '\n' into a line-feed character. All -// other escape sequences are invalid and cause an error. +// recognized: '\\' translates into '\', and '\n' into a line-feed character. +// All other escape sequences are invalid and cause an error. func (p *TextParser) readTokenUntilNewline(recognizeEscapeSequence bool) { p.currentToken.Reset() escaped := false diff --git a/vendor/github.com/prometheus/common/log/log.go b/vendor/github.com/prometheus/common/log/log.go index 04e906c..1088302 100644 --- a/vendor/github.com/prometheus/common/log/log.go +++ b/vendor/github.com/prometheus/common/log/log.go @@ -56,11 +56,11 @@ func (s *loggerSettings) apply(ctx *kingpin.ParseContext) error { // To use the default Kingpin application, call AddFlags(kingpin.CommandLine) func AddFlags(a *kingpin.Application) { s := loggerSettings{} - kingpin.Flag("log.level", "Only log messages with the given severity or above. Valid levels: [debug, info, warn, error, fatal]"). + a.Flag("log.level", "Only log messages with the given severity or above. Valid levels: [debug, info, warn, error, fatal]"). Default(origLogger.Level.String()). StringVar(&s.level) defaultFormat := url.URL{Scheme: "logger", Opaque: "stderr"} - kingpin.Flag("log.format", `Set the log target and format. Example: "logger:syslog?appname=bob&local=7" or "logger:stdout?json=true"`). + a.Flag("log.format", `Set the log target and format. Example: "logger:syslog?appname=bob&local=7" or "logger:stdout?json=true"`). Default(defaultFormat.String()). StringVar(&s.format) a.Action(s.apply) @@ -345,6 +345,11 @@ func Fatalf(format string, args ...interface{}) { baseLogger.sourced().Fatalf(format, args...) } +// AddHook adds hook to Prometheus' original logger. +func AddHook(hook logrus.Hook) { + origLogger.Hooks.Add(hook) +} + type errorLogWriter struct{} func (errorLogWriter) Write(b []byte) (int, error) { diff --git a/vendor/github.com/prometheus/common/model/silence.go b/vendor/github.com/prometheus/common/model/silence.go index 7538e29..bb99889 100644 --- a/vendor/github.com/prometheus/common/model/silence.go +++ b/vendor/github.com/prometheus/common/model/silence.go @@ -59,8 +59,8 @@ func (m *Matcher) Validate() error { return nil } -// Silence defines the representation of a silence definiton -// in the Prometheus eco-system. +// Silence defines the representation of a silence definition in the Prometheus +// eco-system. type Silence struct { ID uint64 `json:"id,omitempty"` diff --git a/vendor/github.com/prometheus/common/model/time.go b/vendor/github.com/prometheus/common/model/time.go index 7e87f1a..46259b1 100644 --- a/vendor/github.com/prometheus/common/model/time.go +++ b/vendor/github.com/prometheus/common/model/time.go @@ -43,7 +43,7 @@ const ( // (1970-01-01 00:00 UTC) excluding leap seconds. type Time int64 -// Interval describes and interval between two timestamps. +// Interval describes an interval between two timestamps. type Interval struct { Start, End Time } @@ -214,6 +214,9 @@ func (d Duration) String() string { ms = int64(time.Duration(d) / time.Millisecond) unit = "ms" ) + if ms == 0 { + return "0s" + } factors := map[string]int64{ "y": 1000 * 60 * 60 * 24 * 365, "w": 1000 * 60 * 60 * 24 * 7, diff --git a/vendor/github.com/prometheus/common/model/value.go b/vendor/github.com/prometheus/common/model/value.go index c9ed3ff..c9d8fb1 100644 --- a/vendor/github.com/prometheus/common/model/value.go +++ b/vendor/github.com/prometheus/common/model/value.go @@ -100,7 +100,7 @@ func (s *SamplePair) UnmarshalJSON(b []byte) error { } // Equal returns true if this SamplePair and o have equal Values and equal -// Timestamps. The sematics of Value equality is defined by SampleValue.Equal. +// Timestamps. The semantics of Value equality is defined by SampleValue.Equal. func (s *SamplePair) Equal(o *SamplePair) bool { return s == o || (s.Value.Equal(o.Value) && s.Timestamp.Equal(o.Timestamp)) } @@ -117,7 +117,7 @@ type Sample struct { } // Equal compares first the metrics, then the timestamp, then the value. The -// sematics of value equality is defined by SampleValue.Equal. +// semantics of value equality is defined by SampleValue.Equal. func (s *Sample) Equal(o *Sample) bool { if s == o { return true diff --git a/vendor/github.com/prometheus/procfs/.gitignore b/vendor/github.com/prometheus/procfs/.gitignore new file mode 100644 index 0000000..25e3659 --- /dev/null +++ b/vendor/github.com/prometheus/procfs/.gitignore @@ -0,0 +1 @@ +/fixtures/ diff --git a/vendor/github.com/prometheus/procfs/.travis.yml b/vendor/github.com/prometheus/procfs/.travis.yml deleted file mode 100644 index ee09bb7..0000000 --- a/vendor/github.com/prometheus/procfs/.travis.yml +++ /dev/null @@ -1,5 +0,0 @@ -sudo: false -language: go -go: - - 1.7.6 - - 1.8.3 diff --git a/vendor/github.com/prometheus/procfs/Makefile b/vendor/github.com/prometheus/procfs/Makefile index dd48afd..947d7d8 100644 --- a/vendor/github.com/prometheus/procfs/Makefile +++ b/vendor/github.com/prometheus/procfs/Makefile @@ -1,18 +1,30 @@ -ci: fmt lint test +# Copyright 2018 The Prometheus Authors +# Licensed under the Apache License, Version 2.0 (the "License"); +# you may not use this file except in compliance with the License. +# You may obtain a copy of the License at +# +# http://www.apache.org/licenses/LICENSE-2.0 +# +# Unless required by applicable law or agreed to in writing, software +# distributed under the License is distributed on an "AS IS" BASIS, +# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. +# See the License for the specific language governing permissions and +# limitations under the License. -fmt: - ! gofmt -l *.go | read nothing - go vet +include Makefile.common -lint: - go get github.com/golang/lint/golint - golint *.go - -test: sysfs/fixtures/.unpacked - go test -v ./... - -sysfs/fixtures/.unpacked: sysfs/fixtures.ttar - ./ttar -C sysfs -x -f sysfs/fixtures.ttar +%/.unpacked: %.ttar + ./ttar -C $(dir $*) -x -f $*.ttar touch $@ -.PHONY: fmt lint test ci +update_fixtures: fixtures.ttar sysfs/fixtures.ttar + +%fixtures.ttar: %/fixtures + rm -v $(dir $*)fixtures/.unpacked + ./ttar -C $(dir $*) -c -f $*fixtures.ttar fixtures/ + +.PHONY: build +build: + +.PHONY: test +test: fixtures/.unpacked sysfs/fixtures/.unpacked common-test diff --git a/vendor/github.com/prometheus/procfs/Makefile.common b/vendor/github.com/prometheus/procfs/Makefile.common new file mode 100644 index 0000000..741579e --- /dev/null +++ b/vendor/github.com/prometheus/procfs/Makefile.common @@ -0,0 +1,223 @@ +# Copyright 2018 The Prometheus Authors +# Licensed under the Apache License, Version 2.0 (the "License"); +# you may not use this file except in compliance with the License. +# You may obtain a copy of the License at +# +# http://www.apache.org/licenses/LICENSE-2.0 +# +# Unless required by applicable law or agreed to in writing, software +# distributed under the License is distributed on an "AS IS" BASIS, +# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. +# See the License for the specific language governing permissions and +# limitations under the License. + + +# A common Makefile that includes rules to be reused in different prometheus projects. +# !!! Open PRs only against the prometheus/prometheus/Makefile.common repository! + +# Example usage : +# Create the main Makefile in the root project directory. +# include Makefile.common +# customTarget: +# @echo ">> Running customTarget" +# + +# Ensure GOBIN is not set during build so that promu is installed to the correct path +unexport GOBIN + +GO ?= go +GOFMT ?= $(GO)fmt +FIRST_GOPATH := $(firstword $(subst :, ,$(shell $(GO) env GOPATH))) +GOOPTS ?= + +GO_VERSION ?= $(shell $(GO) version) +GO_VERSION_NUMBER ?= $(word 3, $(GO_VERSION)) +PRE_GO_111 ?= $(shell echo $(GO_VERSION_NUMBER) | grep -E 'go1\.(10|[0-9])\.') + +unexport GOVENDOR +ifeq (, $(PRE_GO_111)) + ifneq (,$(wildcard go.mod)) + # Enforce Go modules support just in case the directory is inside GOPATH (and for Travis CI). + GO111MODULE := on + + ifneq (,$(wildcard vendor)) + # Always use the local vendor/ directory to satisfy the dependencies. + GOOPTS := $(GOOPTS) -mod=vendor + endif + endif +else + ifneq (,$(wildcard go.mod)) + ifneq (,$(wildcard vendor)) +$(warning This repository requires Go >= 1.11 because of Go modules) +$(warning Some recipes may not work as expected as the current Go runtime is '$(GO_VERSION_NUMBER)') + endif + else + # This repository isn't using Go modules (yet). + GOVENDOR := $(FIRST_GOPATH)/bin/govendor + endif + + unexport GO111MODULE +endif +PROMU := $(FIRST_GOPATH)/bin/promu +STATICCHECK := $(FIRST_GOPATH)/bin/staticcheck +pkgs = ./... + +GO_VERSION ?= $(shell $(GO) version) +GO_BUILD_PLATFORM ?= $(subst /,-,$(lastword $(GO_VERSION))) + +PROMU_VERSION ?= 0.2.0 +PROMU_URL := https://github.com/prometheus/promu/releases/download/v$(PROMU_VERSION)/promu-$(PROMU_VERSION).$(GO_BUILD_PLATFORM).tar.gz + +PREFIX ?= $(shell pwd) +BIN_DIR ?= $(shell pwd) +DOCKER_IMAGE_TAG ?= $(subst /,-,$(shell git rev-parse --abbrev-ref HEAD)) +DOCKER_REPO ?= prom + +.PHONY: all +all: precheck style staticcheck unused build test + +# This rule is used to forward a target like "build" to "common-build". This +# allows a new "build" target to be defined in a Makefile which includes this +# one and override "common-build" without override warnings. +%: common-% ; + +.PHONY: common-style +common-style: + @echo ">> checking code style" + @fmtRes=$$($(GOFMT) -d $$(find . -path ./vendor -prune -o -name '*.go' -print)); \ + if [ -n "$${fmtRes}" ]; then \ + echo "gofmt checking failed!"; echo "$${fmtRes}"; echo; \ + echo "Please ensure you are using $$($(GO) version) for formatting code."; \ + exit 1; \ + fi + +.PHONY: common-check_license +common-check_license: + @echo ">> checking license header" + @licRes=$$(for file in $$(find . -type f -iname '*.go' ! -path './vendor/*') ; do \ + awk 'NR<=3' $$file | grep -Eq "(Copyright|generated|GENERATED)" || echo $$file; \ + done); \ + if [ -n "$${licRes}" ]; then \ + echo "license header checking failed:"; echo "$${licRes}"; \ + exit 1; \ + fi + +.PHONY: common-test-short +common-test-short: + @echo ">> running short tests" + GO111MODULE=$(GO111MODULE) $(GO) test -short $(GOOPTS) $(pkgs) + +.PHONY: common-test +common-test: + @echo ">> running all tests" + GO111MODULE=$(GO111MODULE) $(GO) test -race $(GOOPTS) $(pkgs) + +.PHONY: common-format +common-format: + @echo ">> formatting code" + GO111MODULE=$(GO111MODULE) $(GO) fmt $(GOOPTS) $(pkgs) + +.PHONY: common-vet +common-vet: + @echo ">> vetting code" + GO111MODULE=$(GO111MODULE) $(GO) vet $(GOOPTS) $(pkgs) + +.PHONY: common-staticcheck +common-staticcheck: $(STATICCHECK) + @echo ">> running staticcheck" +ifdef GO111MODULE + GO111MODULE=$(GO111MODULE) $(STATICCHECK) -ignore "$(STATICCHECK_IGNORE)" -checks "SA*" $(pkgs) +else + $(STATICCHECK) -ignore "$(STATICCHECK_IGNORE)" $(pkgs) +endif + +.PHONY: common-unused +common-unused: $(GOVENDOR) +ifdef GOVENDOR + @echo ">> running check for unused packages" + @$(GOVENDOR) list +unused | grep . && exit 1 || echo 'No unused packages' +else +ifdef GO111MODULE + @echo ">> running check for unused/missing packages in go.mod" + GO111MODULE=$(GO111MODULE) $(GO) mod tidy + @git diff --exit-code -- go.sum go.mod +ifneq (,$(wildcard vendor)) + @echo ">> running check for unused packages in vendor/" + GO111MODULE=$(GO111MODULE) $(GO) mod vendor + @git diff --exit-code -- go.sum go.mod vendor/ +endif +endif +endif + +.PHONY: common-build +common-build: promu + @echo ">> building binaries" + GO111MODULE=$(GO111MODULE) $(PROMU) build --prefix $(PREFIX) + +.PHONY: common-tarball +common-tarball: promu + @echo ">> building release tarball" + $(PROMU) tarball --prefix $(PREFIX) $(BIN_DIR) + +.PHONY: common-docker +common-docker: + docker build -t "$(DOCKER_REPO)/$(DOCKER_IMAGE_NAME):$(DOCKER_IMAGE_TAG)" . + +.PHONY: common-docker-publish +common-docker-publish: + docker push "$(DOCKER_REPO)/$(DOCKER_IMAGE_NAME)" + +.PHONY: common-docker-tag-latest +common-docker-tag-latest: + docker tag "$(DOCKER_REPO)/$(DOCKER_IMAGE_NAME):$(DOCKER_IMAGE_TAG)" "$(DOCKER_REPO)/$(DOCKER_IMAGE_NAME):latest" + +.PHONY: promu +promu: $(PROMU) + +$(PROMU): + curl -s -L $(PROMU_URL) | tar -xvz -C /tmp + mkdir -v -p $(FIRST_GOPATH)/bin + cp -v /tmp/promu-$(PROMU_VERSION).$(GO_BUILD_PLATFORM)/promu $(PROMU) + +.PHONY: proto +proto: + @echo ">> generating code from proto files" + @./scripts/genproto.sh + +.PHONY: $(STATICCHECK) +$(STATICCHECK): +ifdef GO111MODULE +# Get staticcheck from a temporary directory to avoid modifying the local go.{mod,sum}. +# See https://github.com/golang/go/issues/27643. +# For now, we are using the next branch of staticcheck because master isn't compatible yet with Go modules. + tmpModule=$$(mktemp -d 2>&1) && \ + mkdir -p $${tmpModule}/staticcheck && \ + cd "$${tmpModule}"/staticcheck && \ + GO111MODULE=on $(GO) mod init example.com/staticcheck && \ + GO111MODULE=on GOOS= GOARCH= $(GO) get -u honnef.co/go/tools/cmd/staticcheck@next && \ + rm -rf $${tmpModule}; +else + GOOS= GOARCH= GO111MODULE=off $(GO) get -u honnef.co/go/tools/cmd/staticcheck +endif + +ifdef GOVENDOR +.PHONY: $(GOVENDOR) +$(GOVENDOR): + GOOS= GOARCH= $(GO) get -u github.com/kardianos/govendor +endif + +.PHONY: precheck +precheck:: + +define PRECHECK_COMMAND_template = +precheck:: $(1)_precheck + + +PRECHECK_COMMAND_$(1) ?= $(1) $$(strip $$(PRECHECK_OPTIONS_$(1))) +.PHONY: $(1)_precheck +$(1)_precheck: + @if ! $$(PRECHECK_COMMAND_$(1)) 1>/dev/null 2>&1; then \ + echo "Execution of '$$(PRECHECK_COMMAND_$(1))' command failed. Is $(1) installed?"; \ + exit 1; \ + fi +endef diff --git a/vendor/github.com/prometheus/procfs/buddyinfo.go b/vendor/github.com/prometheus/procfs/buddyinfo.go index 680a984..d3a8268 100644 --- a/vendor/github.com/prometheus/procfs/buddyinfo.go +++ b/vendor/github.com/prometheus/procfs/buddyinfo.go @@ -62,7 +62,7 @@ func parseBuddyInfo(r io.Reader) ([]BuddyInfo, error) { for scanner.Scan() { var err error line := scanner.Text() - parts := strings.Fields(string(line)) + parts := strings.Fields(line) if len(parts) < 4 { return nil, fmt.Errorf("invalid number of fields when parsing buddyinfo") diff --git a/vendor/github.com/prometheus/procfs/fixtures.ttar b/vendor/github.com/prometheus/procfs/fixtures.ttar new file mode 100644 index 0000000..13c831e --- /dev/null +++ b/vendor/github.com/prometheus/procfs/fixtures.ttar @@ -0,0 +1,462 @@ +# Archive created by ttar -c -f fixtures.ttar fixtures/ +Directory: fixtures +Mode: 755 +# ttar - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 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CONDITIONS OF ANY KIND, either express or implied. +// See the License for the specific language governing permissions and +// limitations under the License. + package procfs import ( @@ -5,6 +18,7 @@ import ( "os" "path" + "github.com/prometheus/procfs/nfs" "github.com/prometheus/procfs/xfs" ) @@ -44,3 +58,25 @@ func (fs FS) XFSStats() (*xfs.Stats, error) { return xfs.ParseStats(f) } + +// NFSClientRPCStats retrieves NFS client RPC statistics. +func (fs FS) NFSClientRPCStats() (*nfs.ClientRPCStats, error) { + f, err := os.Open(fs.Path("net/rpc/nfs")) + if err != nil { + return nil, err + } + defer f.Close() + + return nfs.ParseClientRPCStats(f) +} + +// NFSdServerRPCStats retrieves NFS daemon RPC statistics. +func (fs FS) NFSdServerRPCStats() (*nfs.ServerRPCStats, error) { + f, err := os.Open(fs.Path("net/rpc/nfsd")) + if err != nil { + return nil, err + } + defer f.Close() + + return nfs.ParseServerRPCStats(f) +} diff --git a/vendor/github.com/prometheus/procfs/go.mod b/vendor/github.com/prometheus/procfs/go.mod new file mode 100644 index 0000000..e89ee6c --- /dev/null +++ b/vendor/github.com/prometheus/procfs/go.mod @@ -0,0 +1 @@ +module github.com/prometheus/procfs diff --git a/vendor/github.com/prometheus/procfs/internal/util/parse.go b/vendor/github.com/prometheus/procfs/internal/util/parse.go new file mode 100644 index 0000000..2ff228e --- /dev/null +++ b/vendor/github.com/prometheus/procfs/internal/util/parse.go @@ -0,0 +1,59 @@ +// Copyright 2018 The Prometheus Authors +// Licensed under the Apache License, Version 2.0 (the "License"); +// you may not use this file except in compliance with the License. +// You may obtain a copy of the License at +// +// http://www.apache.org/licenses/LICENSE-2.0 +// +// Unless required by applicable law or agreed to in writing, software +// distributed under the License is distributed on an "AS IS" BASIS, +// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. +// See the License for the specific language governing permissions and +// limitations under the License. + +package util + +import ( + "io/ioutil" + "strconv" + "strings" +) + +// ParseUint32s parses a slice of strings into a slice of uint32s. +func ParseUint32s(ss []string) ([]uint32, error) { + us := make([]uint32, 0, len(ss)) + for _, s := range ss { + u, err := strconv.ParseUint(s, 10, 32) + if err != nil { + return nil, err + } + + us = append(us, uint32(u)) + } + + return us, nil +} + +// ParseUint64s parses a slice of strings into a slice of uint64s. +func ParseUint64s(ss []string) ([]uint64, error) { + us := make([]uint64, 0, len(ss)) + for _, s := range ss { + u, err := strconv.ParseUint(s, 10, 64) + if err != nil { + return nil, err + } + + us = append(us, u) + } + + return us, nil +} + +// ReadUintFromFile reads a file and attempts to parse a uint64 from it. +func ReadUintFromFile(path string) (uint64, error) { + data, err := ioutil.ReadFile(path) + if err != nil { + return 0, err + } + return strconv.ParseUint(strings.TrimSpace(string(data)), 10, 64) +} diff --git a/vendor/github.com/prometheus/procfs/internal/util/sysreadfile_linux.go b/vendor/github.com/prometheus/procfs/internal/util/sysreadfile_linux.go new file mode 100644 index 0000000..df0d567 --- /dev/null +++ b/vendor/github.com/prometheus/procfs/internal/util/sysreadfile_linux.go @@ -0,0 +1,45 @@ +// Copyright 2018 The Prometheus Authors +// Licensed under the Apache License, Version 2.0 (the "License"); +// you may not use this file except in compliance with the License. +// You may obtain a copy of the License at +// +// http://www.apache.org/licenses/LICENSE-2.0 +// +// Unless required by applicable law or agreed to in writing, software +// distributed under the License is distributed on an "AS IS" BASIS, +// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. +// See the License for the specific language governing permissions and +// limitations under the License. + +// +build !windows + +package util + +import ( + "bytes" + "os" + "syscall" +) + +// SysReadFile is a simplified ioutil.ReadFile that invokes syscall.Read directly. +// https://github.com/prometheus/node_exporter/pull/728/files +func SysReadFile(file string) (string, error) { + f, err := os.Open(file) + if err != nil { + return "", err + } + defer f.Close() + + // On some machines, hwmon drivers are broken and return EAGAIN. This causes + // Go's ioutil.ReadFile implementation to poll forever. + // + // Since we either want to read data or bail immediately, do the simplest + // possible read using syscall directly. + b := make([]byte, 128) + n, err := syscall.Read(int(f.Fd()), b) + if err != nil { + return "", err + } + + return string(bytes.TrimSpace(b[:n])), nil +} diff --git a/vendor/github.com/prometheus/procfs/ipvs.go b/vendor/github.com/prometheus/procfs/ipvs.go index 696d114..e36d4a3 100644 --- a/vendor/github.com/prometheus/procfs/ipvs.go +++ b/vendor/github.com/prometheus/procfs/ipvs.go @@ -1,3 +1,16 @@ +// Copyright 2018 The Prometheus Authors +// Licensed under the Apache License, Version 2.0 (the "License"); +// you may not use this file except in compliance with the License. +// You may obtain a copy of the License at +// +// http://www.apache.org/licenses/LICENSE-2.0 +// +// Unless required by applicable law or agreed to in writing, software +// distributed under the License is distributed on an "AS IS" BASIS, +// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. +// See the License for the specific language governing permissions and +// limitations under the License. + package procfs import ( @@ -31,16 +44,16 @@ type IPVSStats struct { type IPVSBackendStatus struct { // The local (virtual) IP address. LocalAddress net.IP + // The remote (real) IP address. + RemoteAddress net.IP // The local (virtual) port. LocalPort uint16 + // The remote (real) port. + RemotePort uint16 // The local firewall mark LocalMark string // The transport protocol (TCP, UDP). Proto string - // The remote (real) IP address. - RemoteAddress net.IP - // The remote (real) port. - RemotePort uint16 // The current number of active connections for this virtual/real address pair. ActiveConn uint64 // The current number of inactive connections for this virtual/real address pair. @@ -151,7 +164,7 @@ func parseIPVSBackendStatus(file io.Reader) ([]IPVSBackendStatus, error) { ) for scanner.Scan() { - fields := strings.Fields(string(scanner.Text())) + fields := strings.Fields(scanner.Text()) if len(fields) == 0 { continue } diff --git a/vendor/github.com/prometheus/procfs/mdstat.go b/vendor/github.com/prometheus/procfs/mdstat.go index d7a248c..9dc1958 100644 --- a/vendor/github.com/prometheus/procfs/mdstat.go +++ b/vendor/github.com/prometheus/procfs/mdstat.go @@ -1,3 +1,16 @@ +// Copyright 2018 The Prometheus Authors +// Licensed under the Apache License, Version 2.0 (the "License"); +// you may not use this file except in compliance with the License. +// You may obtain a copy of the License at +// +// http://www.apache.org/licenses/LICENSE-2.0 +// +// Unless required by applicable law or agreed to in writing, software +// distributed under the License is distributed on an "AS IS" BASIS, +// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. +// See the License for the specific language governing permissions and +// limitations under the License. + package procfs import ( diff --git a/vendor/github.com/prometheus/procfs/mountstats.go b/vendor/github.com/prometheus/procfs/mountstats.go index 6b2b0ba..7a8a1e0 100644 --- a/vendor/github.com/prometheus/procfs/mountstats.go +++ b/vendor/github.com/prometheus/procfs/mountstats.go @@ -1,3 +1,16 @@ +// Copyright 2018 The Prometheus Authors +// Licensed under the Apache License, Version 2.0 (the "License"); +// you may not use this file except in compliance with the License. +// You may obtain a copy of the License at +// +// http://www.apache.org/licenses/LICENSE-2.0 +// +// Unless required by applicable law or agreed to in writing, software +// distributed under the License is distributed on an "AS IS" BASIS, +// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. +// See the License for the specific language governing permissions and +// limitations under the License. + package procfs // While implementing parsing of /proc/[pid]/mountstats, this blog was used @@ -26,8 +39,11 @@ const ( statVersion10 = "1.0" statVersion11 = "1.1" - fieldTransport10Len = 10 - fieldTransport11Len = 13 + fieldTransport10TCPLen = 10 + fieldTransport10UDPLen = 7 + + fieldTransport11TCPLen = 13 + fieldTransport11UDPLen = 10 ) // A Mount is a device mount parsed from /proc/[pid]/mountstats. @@ -173,6 +189,8 @@ type NFSOperationStats struct { // A NFSTransportStats contains statistics for the NFS mount RPC requests and // responses. type NFSTransportStats struct { + // The transport protocol used for the NFS mount. + Protocol string // The local port used for the NFS mount. Port uint64 // Number of times the client has had to establish a connection from scratch @@ -347,7 +365,7 @@ func parseMountStatsNFS(s *bufio.Scanner, statVersion string) (*MountStatsNFS, e return nil, fmt.Errorf("not enough information for NFS transport stats: %v", ss) } - tstats, err := parseNFSTransportStats(ss[2:], statVersion) + tstats, err := parseNFSTransportStats(ss[1:], statVersion) if err != nil { return nil, err } @@ -509,13 +527,33 @@ func parseNFSOperationStats(s *bufio.Scanner) ([]NFSOperationStats, error) { // parseNFSTransportStats parses a NFSTransportStats line using an input set of // integer fields matched to a specific stats version. func parseNFSTransportStats(ss []string, statVersion string) (*NFSTransportStats, error) { + // Extract the protocol field. It is the only string value in the line + protocol := ss[0] + ss = ss[1:] + switch statVersion { case statVersion10: - if len(ss) != fieldTransport10Len { + var expectedLength int + if protocol == "tcp" { + expectedLength = fieldTransport10TCPLen + } else if protocol == "udp" { + expectedLength = fieldTransport10UDPLen + } else { + return nil, fmt.Errorf("invalid NFS protocol \"%s\" in stats 1.0 statement: %v", protocol, ss) + } + if len(ss) != expectedLength { return nil, fmt.Errorf("invalid NFS transport stats 1.0 statement: %v", ss) } case statVersion11: - if len(ss) != fieldTransport11Len { + var expectedLength int + if protocol == "tcp" { + expectedLength = fieldTransport11TCPLen + } else if protocol == "udp" { + expectedLength = fieldTransport11UDPLen + } else { + return nil, fmt.Errorf("invalid NFS protocol \"%s\" in stats 1.1 statement: %v", protocol, ss) + } + if len(ss) != expectedLength { return nil, fmt.Errorf("invalid NFS transport stats 1.1 statement: %v", ss) } default: @@ -523,12 +561,13 @@ func parseNFSTransportStats(ss []string, statVersion string) (*NFSTransportStats } // Allocate enough for v1.1 stats since zero value for v1.1 stats will be okay - // in a v1.0 response. + // in a v1.0 response. Since the stat length is bigger for TCP stats, we use + // the TCP length here. // // Note: slice length must be set to length of v1.1 stats to avoid a panic when // only v1.0 stats are present. // See: https://github.com/prometheus/node_exporter/issues/571. - ns := make([]uint64, fieldTransport11Len) + ns := make([]uint64, fieldTransport11TCPLen) for i, s := range ss { n, err := strconv.ParseUint(s, 10, 64) if err != nil { @@ -538,7 +577,18 @@ func parseNFSTransportStats(ss []string, statVersion string) (*NFSTransportStats ns[i] = n } + // The fields differ depending on the transport protocol (TCP or UDP) + // From https://utcc.utoronto.ca/%7Ecks/space/blog/linux/NFSMountstatsXprt + // + // For the udp RPC transport there is no connection count, connect idle time, + // or idle time (fields #3, #4, and #5); all other fields are the same. So + // we set them to 0 here. + if protocol == "udp" { + ns = append(ns[:2], append(make([]uint64, 3), ns[2:]...)...) + } + return &NFSTransportStats{ + Protocol: protocol, Port: ns[0], Bind: ns[1], Connect: ns[2], diff --git a/vendor/github.com/prometheus/procfs/net_dev.go b/vendor/github.com/prometheus/procfs/net_dev.go new file mode 100644 index 0000000..3f25233 --- /dev/null +++ b/vendor/github.com/prometheus/procfs/net_dev.go @@ -0,0 +1,216 @@ +// Copyright 2018 The Prometheus Authors +// Licensed under the Apache License, Version 2.0 (the "License"); +// you may not use this file except in compliance with the License. +// You may obtain a copy of the License at +// +// http://www.apache.org/licenses/LICENSE-2.0 +// +// Unless required by applicable law or agreed to in writing, software +// distributed under the License is distributed on an "AS IS" BASIS, +// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. +// See the License for the specific language governing permissions and +// limitations under the License. + +package procfs + +import ( + "bufio" + "errors" + "os" + "sort" + "strconv" + "strings" +) + +// NetDevLine is single line parsed from /proc/net/dev or /proc/[pid]/net/dev. +type NetDevLine struct { + Name string `json:"name"` // The name of the interface. + RxBytes uint64 `json:"rx_bytes"` // Cumulative count of bytes received. + RxPackets uint64 `json:"rx_packets"` // Cumulative count of packets received. + RxErrors uint64 `json:"rx_errors"` // Cumulative count of receive errors encountered. + RxDropped uint64 `json:"rx_dropped"` // Cumulative count of packets dropped while receiving. + RxFIFO uint64 `json:"rx_fifo"` // Cumulative count of FIFO buffer errors. + RxFrame uint64 `json:"rx_frame"` // Cumulative count of packet framing errors. + RxCompressed uint64 `json:"rx_compressed"` // Cumulative count of compressed packets received by the device driver. + RxMulticast uint64 `json:"rx_multicast"` // Cumulative count of multicast frames received by the device driver. + TxBytes uint64 `json:"tx_bytes"` // Cumulative count of bytes transmitted. + TxPackets uint64 `json:"tx_packets"` // Cumulative count of packets transmitted. + TxErrors uint64 `json:"tx_errors"` // Cumulative count of transmit errors encountered. + TxDropped uint64 `json:"tx_dropped"` // Cumulative count of packets dropped while transmitting. + TxFIFO uint64 `json:"tx_fifo"` // Cumulative count of FIFO buffer errors. + TxCollisions uint64 `json:"tx_collisions"` // Cumulative count of collisions detected on the interface. + TxCarrier uint64 `json:"tx_carrier"` // Cumulative count of carrier losses detected by the device driver. + TxCompressed uint64 `json:"tx_compressed"` // Cumulative count of compressed packets transmitted by the device driver. +} + +// NetDev is parsed from /proc/net/dev or /proc/[pid]/net/dev. The map keys +// are interface names. +type NetDev map[string]NetDevLine + +// NewNetDev returns kernel/system statistics read from /proc/net/dev. +func NewNetDev() (NetDev, error) { + fs, err := NewFS(DefaultMountPoint) + if err != nil { + return nil, err + } + + return fs.NewNetDev() +} + +// NewNetDev returns kernel/system statistics read from /proc/net/dev. +func (fs FS) NewNetDev() (NetDev, error) { + return newNetDev(fs.Path("net/dev")) +} + +// NewNetDev returns kernel/system statistics read from /proc/[pid]/net/dev. +func (p Proc) NewNetDev() (NetDev, error) { + return newNetDev(p.path("net/dev")) +} + +// newNetDev creates a new NetDev from the contents of the given file. +func newNetDev(file string) (NetDev, error) { + f, err := os.Open(file) + if err != nil { + return NetDev{}, err + } + defer f.Close() + + nd := NetDev{} + s := bufio.NewScanner(f) + for n := 0; s.Scan(); n++ { + // Skip the 2 header lines. + if n < 2 { + continue + } + + line, err := nd.parseLine(s.Text()) + if err != nil { + return nd, err + } + + nd[line.Name] = *line + } + + return nd, s.Err() +} + +// parseLine parses a single line from the /proc/net/dev file. Header lines +// must be filtered prior to calling this method. +func (nd NetDev) parseLine(rawLine string) (*NetDevLine, error) { + parts := strings.SplitN(rawLine, ":", 2) + if len(parts) != 2 { + return nil, errors.New("invalid net/dev line, missing colon") + } + fields := strings.Fields(strings.TrimSpace(parts[1])) + + var err error + line := &NetDevLine{} + + // Interface Name + line.Name = strings.TrimSpace(parts[0]) + if line.Name == "" { + return nil, errors.New("invalid net/dev line, empty interface name") + } + + // RX + line.RxBytes, err = strconv.ParseUint(fields[0], 10, 64) + if err != nil { + return nil, err + } + line.RxPackets, err = strconv.ParseUint(fields[1], 10, 64) + if err != nil { + return nil, err + } + line.RxErrors, err = strconv.ParseUint(fields[2], 10, 64) + if err != nil { + return nil, err + } + line.RxDropped, err = strconv.ParseUint(fields[3], 10, 64) + if err != nil { + return nil, err + } + line.RxFIFO, err = strconv.ParseUint(fields[4], 10, 64) + if err != nil { + return nil, err + } + line.RxFrame, err = strconv.ParseUint(fields[5], 10, 64) + if err != nil { + return nil, err + } + line.RxCompressed, err = strconv.ParseUint(fields[6], 10, 64) + if err != nil { + return nil, err + } + line.RxMulticast, err = strconv.ParseUint(fields[7], 10, 64) + if err != nil { + return nil, err + } + + // TX + line.TxBytes, err = strconv.ParseUint(fields[8], 10, 64) + if err != nil { + return nil, err + } + line.TxPackets, err = strconv.ParseUint(fields[9], 10, 64) + if err != nil { + return nil, err + } + line.TxErrors, err = strconv.ParseUint(fields[10], 10, 64) + if err != nil { + return nil, err + } + line.TxDropped, err = strconv.ParseUint(fields[11], 10, 64) + if err != nil { + return nil, err + } + line.TxFIFO, err = strconv.ParseUint(fields[12], 10, 64) + if err != nil { + return nil, err + } + line.TxCollisions, err = strconv.ParseUint(fields[13], 10, 64) + if err != nil { + return nil, err + } + line.TxCarrier, err = strconv.ParseUint(fields[14], 10, 64) + if err != nil { + return nil, err + } + line.TxCompressed, err = strconv.ParseUint(fields[15], 10, 64) + if err != nil { + return nil, err + } + + return line, nil +} + +// Total aggregates the values across interfaces and returns a new NetDevLine. +// The Name field will be a sorted comma separated list of interface names. +func (nd NetDev) Total() NetDevLine { + total := NetDevLine{} + + names := make([]string, 0, len(nd)) + for _, ifc := range nd { + names = append(names, ifc.Name) + total.RxBytes += ifc.RxBytes + total.RxPackets += ifc.RxPackets + total.RxPackets += ifc.RxPackets + total.RxErrors += ifc.RxErrors + total.RxDropped += ifc.RxDropped + total.RxFIFO += ifc.RxFIFO + total.RxFrame += ifc.RxFrame + total.RxCompressed += ifc.RxCompressed + total.RxMulticast += ifc.RxMulticast + total.TxBytes += ifc.TxBytes + total.TxPackets += ifc.TxPackets + total.TxErrors += ifc.TxErrors + total.TxDropped += ifc.TxDropped + total.TxFIFO += ifc.TxFIFO + total.TxCollisions += ifc.TxCollisions + total.TxCarrier += ifc.TxCarrier + total.TxCompressed += ifc.TxCompressed + } + sort.Strings(names) + total.Name = strings.Join(names, ", ") + + return total +} diff --git a/vendor/github.com/prometheus/procfs/nfs/nfs.go b/vendor/github.com/prometheus/procfs/nfs/nfs.go new file mode 100644 index 0000000..651bf68 --- /dev/null +++ b/vendor/github.com/prometheus/procfs/nfs/nfs.go @@ -0,0 +1,263 @@ +// Copyright 2018 The Prometheus Authors +// Licensed under the Apache License, Version 2.0 (the "License"); +// you may not use this file except in compliance with the License. +// You may obtain a copy of the License at +// +// http://www.apache.org/licenses/LICENSE-2.0 +// +// Unless required by applicable law or agreed to in writing, software +// distributed under the License is distributed on an "AS IS" BASIS, +// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. +// See the License for the specific language governing permissions and +// limitations under the License. + +// Package nfs implements parsing of /proc/net/rpc/nfsd. +// Fields are documented in https://www.svennd.be/nfsd-stats-explained-procnetrpcnfsd/ +package nfs + +// ReplyCache models the "rc" line. +type ReplyCache struct { + Hits uint64 + Misses uint64 + NoCache uint64 +} + +// FileHandles models the "fh" line. +type FileHandles struct { + Stale uint64 + TotalLookups uint64 + AnonLookups uint64 + DirNoCache uint64 + NoDirNoCache uint64 +} + +// InputOutput models the "io" line. +type InputOutput struct { + Read uint64 + Write uint64 +} + +// Threads models the "th" line. +type Threads struct { + Threads uint64 + FullCnt uint64 +} + +// ReadAheadCache models the "ra" line. +type ReadAheadCache struct { + CacheSize uint64 + CacheHistogram []uint64 + NotFound uint64 +} + +// Network models the "net" line. +type Network struct { + NetCount uint64 + UDPCount uint64 + TCPCount uint64 + TCPConnect uint64 +} + +// ClientRPC models the nfs "rpc" line. +type ClientRPC struct { + RPCCount uint64 + Retransmissions uint64 + AuthRefreshes uint64 +} + +// ServerRPC models the nfsd "rpc" line. +type ServerRPC struct { + RPCCount uint64 + BadCnt uint64 + BadFmt uint64 + BadAuth uint64 + BadcInt uint64 +} + +// V2Stats models the "proc2" line. +type V2Stats struct { + Null uint64 + GetAttr uint64 + SetAttr uint64 + Root uint64 + Lookup uint64 + ReadLink uint64 + Read uint64 + WrCache uint64 + Write uint64 + Create uint64 + Remove uint64 + Rename uint64 + Link uint64 + SymLink uint64 + MkDir uint64 + RmDir uint64 + ReadDir uint64 + FsStat uint64 +} + +// V3Stats models the "proc3" line. +type V3Stats struct { + Null uint64 + GetAttr uint64 + SetAttr uint64 + Lookup uint64 + Access uint64 + ReadLink uint64 + Read uint64 + Write uint64 + Create uint64 + MkDir uint64 + SymLink uint64 + MkNod uint64 + Remove uint64 + RmDir uint64 + Rename uint64 + Link uint64 + ReadDir uint64 + ReadDirPlus uint64 + FsStat uint64 + FsInfo uint64 + PathConf uint64 + Commit uint64 +} + +// ClientV4Stats models the nfs "proc4" line. +type ClientV4Stats struct { + Null uint64 + Read uint64 + Write uint64 + Commit uint64 + Open uint64 + OpenConfirm uint64 + OpenNoattr uint64 + OpenDowngrade uint64 + Close uint64 + Setattr uint64 + FsInfo uint64 + Renew uint64 + SetClientID uint64 + SetClientIDConfirm uint64 + Lock uint64 + Lockt uint64 + Locku uint64 + Access uint64 + Getattr uint64 + Lookup uint64 + LookupRoot uint64 + Remove uint64 + Rename uint64 + Link uint64 + Symlink uint64 + Create uint64 + Pathconf uint64 + StatFs uint64 + ReadLink uint64 + ReadDir uint64 + ServerCaps uint64 + DelegReturn uint64 + GetACL uint64 + SetACL uint64 + FsLocations uint64 + ReleaseLockowner uint64 + Secinfo uint64 + FsidPresent uint64 + ExchangeID uint64 + CreateSession uint64 + DestroySession uint64 + Sequence uint64 + GetLeaseTime uint64 + ReclaimComplete uint64 + LayoutGet uint64 + GetDeviceInfo uint64 + LayoutCommit uint64 + LayoutReturn uint64 + SecinfoNoName uint64 + TestStateID uint64 + FreeStateID uint64 + GetDeviceList uint64 + BindConnToSession uint64 + DestroyClientID uint64 + Seek uint64 + Allocate uint64 + DeAllocate uint64 + LayoutStats uint64 + Clone uint64 +} + +// ServerV4Stats models the nfsd "proc4" line. +type ServerV4Stats struct { + Null uint64 + Compound uint64 +} + +// V4Ops models the "proc4ops" line: NFSv4 operations +// Variable list, see: +// v4.0 https://tools.ietf.org/html/rfc3010 (38 operations) +// v4.1 https://tools.ietf.org/html/rfc5661 (58 operations) +// v4.2 https://tools.ietf.org/html/draft-ietf-nfsv4-minorversion2-41 (71 operations) +type V4Ops struct { + //Values uint64 // Variable depending on v4.x sub-version. TODO: Will this always at least include the fields in this struct? + Op0Unused uint64 + Op1Unused uint64 + Op2Future uint64 + Access uint64 + Close uint64 + Commit uint64 + Create uint64 + DelegPurge uint64 + DelegReturn uint64 + GetAttr uint64 + GetFH uint64 + Link uint64 + Lock uint64 + Lockt uint64 + Locku uint64 + Lookup uint64 + LookupRoot uint64 + Nverify uint64 + Open uint64 + OpenAttr uint64 + OpenConfirm uint64 + OpenDgrd uint64 + PutFH uint64 + PutPubFH uint64 + PutRootFH uint64 + Read uint64 + ReadDir uint64 + ReadLink uint64 + Remove uint64 + Rename uint64 + Renew uint64 + RestoreFH uint64 + SaveFH uint64 + SecInfo uint64 + SetAttr uint64 + Verify uint64 + Write uint64 + RelLockOwner uint64 +} + +// ClientRPCStats models all stats from /proc/net/rpc/nfs. +type ClientRPCStats struct { + Network Network + ClientRPC ClientRPC + V2Stats V2Stats + V3Stats V3Stats + ClientV4Stats ClientV4Stats +} + +// ServerRPCStats models all stats from /proc/net/rpc/nfsd. +type ServerRPCStats struct { + ReplyCache ReplyCache + FileHandles FileHandles + InputOutput InputOutput + Threads Threads + ReadAheadCache ReadAheadCache + Network Network + ServerRPC ServerRPC + V2Stats V2Stats + V3Stats V3Stats + ServerV4Stats ServerV4Stats + V4Ops V4Ops +} diff --git a/vendor/github.com/prometheus/procfs/nfs/parse.go b/vendor/github.com/prometheus/procfs/nfs/parse.go new file mode 100644 index 0000000..95a83cc --- /dev/null +++ b/vendor/github.com/prometheus/procfs/nfs/parse.go @@ -0,0 +1,317 @@ +// Copyright 2018 The Prometheus Authors +// Licensed under the Apache License, Version 2.0 (the "License"); +// you may not use this file except in compliance with the License. +// You may obtain a copy of the License at +// +// http://www.apache.org/licenses/LICENSE-2.0 +// +// Unless required by applicable law or agreed to in writing, software +// distributed under the License is distributed on an "AS IS" BASIS, +// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. +// See the License for the specific language governing permissions and +// limitations under the License. + +package nfs + +import ( + "fmt" +) + +func parseReplyCache(v []uint64) (ReplyCache, error) { + if len(v) != 3 { + return ReplyCache{}, fmt.Errorf("invalid ReplyCache line %q", v) + } + + return ReplyCache{ + Hits: v[0], + Misses: v[1], + NoCache: v[2], + }, nil +} + +func parseFileHandles(v []uint64) (FileHandles, error) { + if len(v) != 5 { + return FileHandles{}, fmt.Errorf("invalid FileHandles, line %q", v) + } + + return FileHandles{ + Stale: v[0], + TotalLookups: v[1], + AnonLookups: v[2], + DirNoCache: v[3], + NoDirNoCache: v[4], + }, nil +} + +func parseInputOutput(v []uint64) (InputOutput, error) { + if len(v) != 2 { + return InputOutput{}, fmt.Errorf("invalid InputOutput line %q", v) + } + + return InputOutput{ + Read: v[0], + Write: v[1], + }, nil +} + +func parseThreads(v []uint64) (Threads, error) { + if len(v) != 2 { + return Threads{}, fmt.Errorf("invalid Threads line %q", v) + } + + return Threads{ + Threads: v[0], + FullCnt: v[1], + }, nil +} + +func parseReadAheadCache(v []uint64) (ReadAheadCache, error) { + if len(v) != 12 { + return ReadAheadCache{}, fmt.Errorf("invalid ReadAheadCache line %q", v) + } + + return ReadAheadCache{ + CacheSize: v[0], + CacheHistogram: v[1:11], + NotFound: v[11], + }, nil +} + +func parseNetwork(v []uint64) (Network, error) { + if len(v) != 4 { + return Network{}, fmt.Errorf("invalid Network line %q", v) + } + + return Network{ + NetCount: v[0], + UDPCount: v[1], + TCPCount: v[2], + TCPConnect: v[3], + }, nil +} + +func parseServerRPC(v []uint64) (ServerRPC, error) { + if len(v) != 5 { + return ServerRPC{}, fmt.Errorf("invalid RPC line %q", v) + } + + return ServerRPC{ + RPCCount: v[0], + BadCnt: v[1], + BadFmt: v[2], + BadAuth: v[3], + BadcInt: v[4], + }, nil +} + +func parseClientRPC(v []uint64) (ClientRPC, error) { + if len(v) != 3 { + return ClientRPC{}, fmt.Errorf("invalid RPC line %q", v) + } + + return ClientRPC{ + RPCCount: v[0], + Retransmissions: v[1], + AuthRefreshes: v[2], + }, nil +} + +func parseV2Stats(v []uint64) (V2Stats, error) { + values := int(v[0]) + if len(v[1:]) != values || values != 18 { + return V2Stats{}, fmt.Errorf("invalid V2Stats line %q", v) + } + + return V2Stats{ + Null: v[1], + GetAttr: v[2], + SetAttr: v[3], + Root: v[4], + Lookup: v[5], + ReadLink: v[6], + Read: v[7], + WrCache: v[8], + Write: v[9], + Create: v[10], + Remove: v[11], + Rename: v[12], + Link: v[13], + SymLink: v[14], + MkDir: v[15], + RmDir: v[16], + ReadDir: v[17], + FsStat: v[18], + }, nil +} + +func parseV3Stats(v []uint64) (V3Stats, error) { + values := int(v[0]) + if len(v[1:]) != values || values != 22 { + return V3Stats{}, fmt.Errorf("invalid V3Stats line %q", v) + } + + return V3Stats{ + Null: v[1], + GetAttr: v[2], + SetAttr: v[3], + Lookup: v[4], + Access: v[5], + ReadLink: v[6], + Read: v[7], + Write: v[8], + Create: v[9], + MkDir: v[10], + SymLink: v[11], + MkNod: v[12], + Remove: v[13], + RmDir: v[14], + Rename: v[15], + Link: v[16], + ReadDir: v[17], + ReadDirPlus: v[18], + FsStat: v[19], + FsInfo: v[20], + PathConf: v[21], + Commit: v[22], + }, nil +} + +func parseClientV4Stats(v []uint64) (ClientV4Stats, error) { + values := int(v[0]) + if len(v[1:]) != values { + return ClientV4Stats{}, fmt.Errorf("invalid ClientV4Stats line %q", v) + } + + // This function currently supports mapping 59 NFS v4 client stats. Older + // kernels may emit fewer stats, so we must detect this and pad out the + // values to match the expected slice size. + if values < 59 { + newValues := make([]uint64, 60) + copy(newValues, v) + v = newValues + } + + return ClientV4Stats{ + Null: v[1], + Read: v[2], + Write: v[3], + Commit: v[4], + Open: v[5], + OpenConfirm: v[6], + OpenNoattr: v[7], + OpenDowngrade: v[8], + Close: v[9], + Setattr: v[10], + FsInfo: v[11], + Renew: v[12], + SetClientID: v[13], + SetClientIDConfirm: v[14], + Lock: v[15], + Lockt: v[16], + Locku: v[17], + Access: v[18], + Getattr: v[19], + Lookup: v[20], + LookupRoot: v[21], + Remove: v[22], + Rename: v[23], + Link: v[24], + Symlink: v[25], + Create: v[26], + Pathconf: v[27], + StatFs: v[28], + ReadLink: v[29], + ReadDir: v[30], + ServerCaps: v[31], + DelegReturn: v[32], + GetACL: v[33], + SetACL: v[34], + FsLocations: v[35], + ReleaseLockowner: v[36], + Secinfo: v[37], + FsidPresent: v[38], + ExchangeID: v[39], + CreateSession: v[40], + DestroySession: v[41], + Sequence: v[42], + GetLeaseTime: v[43], + ReclaimComplete: v[44], + LayoutGet: v[45], + GetDeviceInfo: v[46], + LayoutCommit: v[47], + LayoutReturn: v[48], + SecinfoNoName: v[49], + TestStateID: v[50], + FreeStateID: v[51], + GetDeviceList: v[52], + BindConnToSession: v[53], + DestroyClientID: v[54], + Seek: v[55], + Allocate: v[56], + DeAllocate: v[57], + LayoutStats: v[58], + Clone: v[59], + }, nil +} + +func parseServerV4Stats(v []uint64) (ServerV4Stats, error) { + values := int(v[0]) + if len(v[1:]) != values || values != 2 { + return ServerV4Stats{}, fmt.Errorf("invalid V4Stats line %q", v) + } + + return ServerV4Stats{ + Null: v[1], + Compound: v[2], + }, nil +} + +func parseV4Ops(v []uint64) (V4Ops, error) { + values := int(v[0]) + if len(v[1:]) != values || values < 39 { + return V4Ops{}, fmt.Errorf("invalid V4Ops line %q", v) + } + + stats := V4Ops{ + Op0Unused: v[1], + Op1Unused: v[2], + Op2Future: v[3], + Access: v[4], + Close: v[5], + Commit: v[6], + Create: v[7], + DelegPurge: v[8], + DelegReturn: v[9], + GetAttr: v[10], + GetFH: v[11], + Link: v[12], + Lock: v[13], + Lockt: v[14], + Locku: v[15], + Lookup: v[16], + LookupRoot: v[17], + Nverify: v[18], + Open: v[19], + OpenAttr: v[20], + OpenConfirm: v[21], + OpenDgrd: v[22], + PutFH: v[23], + PutPubFH: v[24], + PutRootFH: v[25], + Read: v[26], + ReadDir: v[27], + ReadLink: v[28], + Remove: v[29], + Rename: v[30], + Renew: v[31], + RestoreFH: v[32], + SaveFH: v[33], + SecInfo: v[34], + SetAttr: v[35], + Verify: v[36], + Write: v[37], + RelLockOwner: v[38], + } + + return stats, nil +} diff --git a/vendor/github.com/prometheus/procfs/nfs/parse_nfs.go b/vendor/github.com/prometheus/procfs/nfs/parse_nfs.go new file mode 100644 index 0000000..c0d3a5a --- /dev/null +++ b/vendor/github.com/prometheus/procfs/nfs/parse_nfs.go @@ -0,0 +1,67 @@ +// Copyright 2018 The Prometheus Authors +// Licensed under the Apache License, Version 2.0 (the "License"); +// you may not use this file except in compliance with the License. +// You may obtain a copy of the License at +// +// http://www.apache.org/licenses/LICENSE-2.0 +// +// Unless required by applicable law or agreed to in writing, software +// distributed under the License is distributed on an "AS IS" BASIS, +// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. +// See the License for the specific language governing permissions and +// limitations under the License. + +package nfs + +import ( + "bufio" + "fmt" + "io" + "strings" + + "github.com/prometheus/procfs/internal/util" +) + +// ParseClientRPCStats returns stats read from /proc/net/rpc/nfs +func ParseClientRPCStats(r io.Reader) (*ClientRPCStats, error) { + stats := &ClientRPCStats{} + + scanner := bufio.NewScanner(r) + for scanner.Scan() { + line := scanner.Text() + parts := strings.Fields(scanner.Text()) + // require at least + if len(parts) < 2 { + return nil, fmt.Errorf("invalid NFS metric line %q", line) + } + + values, err := util.ParseUint64s(parts[1:]) + if err != nil { + return nil, fmt.Errorf("error parsing NFS metric line: %s", err) + } + + switch metricLine := parts[0]; metricLine { + case "net": + stats.Network, err = parseNetwork(values) + case "rpc": + stats.ClientRPC, err = parseClientRPC(values) + case "proc2": + stats.V2Stats, err = parseV2Stats(values) + case "proc3": + stats.V3Stats, err = parseV3Stats(values) + case "proc4": + stats.ClientV4Stats, err = parseClientV4Stats(values) + default: + return nil, fmt.Errorf("unknown NFS metric line %q", metricLine) + } + if err != nil { + return nil, fmt.Errorf("errors parsing NFS metric line: %s", err) + } + } + + if err := scanner.Err(); err != nil { + return nil, fmt.Errorf("error scanning NFS file: %s", err) + } + + return stats, nil +} diff --git a/vendor/github.com/prometheus/procfs/nfs/parse_nfsd.go b/vendor/github.com/prometheus/procfs/nfs/parse_nfsd.go new file mode 100644 index 0000000..57bb4a3 --- /dev/null +++ b/vendor/github.com/prometheus/procfs/nfs/parse_nfsd.go @@ -0,0 +1,89 @@ +// Copyright 2018 The Prometheus Authors +// Licensed under the Apache License, Version 2.0 (the "License"); +// you may not use this file except in compliance with the License. +// You may obtain a copy of the License at +// +// http://www.apache.org/licenses/LICENSE-2.0 +// +// Unless required by applicable law or agreed to in writing, software +// distributed under the License is distributed on an "AS IS" BASIS, +// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. +// See the License for the specific language governing permissions and +// limitations under the License. + +package nfs + +import ( + "bufio" + "fmt" + "io" + "strings" + + "github.com/prometheus/procfs/internal/util" +) + +// ParseServerRPCStats returns stats read from /proc/net/rpc/nfsd +func ParseServerRPCStats(r io.Reader) (*ServerRPCStats, error) { + stats := &ServerRPCStats{} + + scanner := bufio.NewScanner(r) + for scanner.Scan() { + line := scanner.Text() + parts := strings.Fields(scanner.Text()) + // require at least + if len(parts) < 2 { + return nil, fmt.Errorf("invalid NFSd metric line %q", line) + } + label := parts[0] + + var values []uint64 + var err error + if label == "th" { + if len(parts) < 3 { + return nil, fmt.Errorf("invalid NFSd th metric line %q", line) + } + values, err = util.ParseUint64s(parts[1:3]) + } else { + values, err = util.ParseUint64s(parts[1:]) + } + if err != nil { + return nil, fmt.Errorf("error parsing NFSd metric line: %s", err) + } + + switch metricLine := parts[0]; metricLine { + case "rc": + stats.ReplyCache, err = parseReplyCache(values) + case "fh": + stats.FileHandles, err = parseFileHandles(values) + case "io": + stats.InputOutput, err = parseInputOutput(values) + case "th": + stats.Threads, err = parseThreads(values) + case "ra": + stats.ReadAheadCache, err = parseReadAheadCache(values) + case "net": + stats.Network, err = parseNetwork(values) + case "rpc": + stats.ServerRPC, err = parseServerRPC(values) + case "proc2": + stats.V2Stats, err = parseV2Stats(values) + case "proc3": + stats.V3Stats, err = parseV3Stats(values) + case "proc4": + stats.ServerV4Stats, err = parseServerV4Stats(values) + case "proc4ops": + stats.V4Ops, err = parseV4Ops(values) + default: + return nil, fmt.Errorf("unknown NFSd metric line %q", metricLine) + } + if err != nil { + return nil, fmt.Errorf("errors parsing NFSd metric line: %s", err) + } + } + + if err := scanner.Err(); err != nil { + return nil, fmt.Errorf("error scanning NFSd file: %s", err) + } + + return stats, nil +} diff --git a/vendor/github.com/prometheus/procfs/proc.go b/vendor/github.com/prometheus/procfs/proc.go index 8717e1f..06bed0e 100644 --- a/vendor/github.com/prometheus/procfs/proc.go +++ b/vendor/github.com/prometheus/procfs/proc.go @@ -1,6 +1,20 @@ +// Copyright 2018 The Prometheus Authors +// Licensed under the Apache License, Version 2.0 (the "License"); +// you may not use this file except in compliance with the License. +// You may obtain a copy of the License at +// +// http://www.apache.org/licenses/LICENSE-2.0 +// +// Unless required by applicable law or agreed to in writing, software +// distributed under the License is distributed on an "AS IS" BASIS, +// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. +// See the License for the specific language governing permissions and +// limitations under the License. + package procfs import ( + "bytes" "fmt" "io/ioutil" "os" @@ -113,7 +127,7 @@ func (p Proc) CmdLine() ([]string, error) { return []string{}, nil } - return strings.Split(string(data[:len(data)-1]), string(byte(0))), nil + return strings.Split(string(bytes.TrimRight(data, string("\x00"))), string(byte(0))), nil } // Comm returns the command name of a process. @@ -142,6 +156,26 @@ func (p Proc) Executable() (string, error) { return exe, err } +// Cwd returns the absolute path to the current working directory of the process. +func (p Proc) Cwd() (string, error) { + wd, err := os.Readlink(p.path("cwd")) + if os.IsNotExist(err) { + return "", nil + } + + return wd, err +} + +// RootDir returns the absolute path to the process's root directory (as set by chroot) +func (p Proc) RootDir() (string, error) { + rdir, err := os.Readlink(p.path("root")) + if os.IsNotExist(err) { + return "", nil + } + + return rdir, err +} + // FileDescriptors returns the currently open file descriptors of a process. func (p Proc) FileDescriptors() ([]uintptr, error) { names, err := p.fileDescriptors() diff --git a/vendor/github.com/prometheus/procfs/proc_io.go b/vendor/github.com/prometheus/procfs/proc_io.go index b4e31d7..0251c83 100644 --- a/vendor/github.com/prometheus/procfs/proc_io.go +++ b/vendor/github.com/prometheus/procfs/proc_io.go @@ -1,3 +1,16 @@ +// Copyright 2018 The Prometheus Authors +// Licensed under the Apache License, Version 2.0 (the "License"); +// you may not use this file except in compliance with the License. +// You may obtain a copy of the License at +// +// http://www.apache.org/licenses/LICENSE-2.0 +// +// Unless required by applicable law or agreed to in writing, software +// distributed under the License is distributed on an "AS IS" BASIS, +// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. +// See the License for the specific language governing permissions and +// limitations under the License. + package procfs import ( @@ -47,9 +60,6 @@ func (p Proc) NewIO() (ProcIO, error) { _, err = fmt.Sscanf(string(data), ioFormat, &pio.RChar, &pio.WChar, &pio.SyscR, &pio.SyscW, &pio.ReadBytes, &pio.WriteBytes, &pio.CancelledWriteBytes) - if err != nil { - return pio, err - } - return pio, nil + return pio, err } diff --git a/vendor/github.com/prometheus/procfs/proc_limits.go b/vendor/github.com/prometheus/procfs/proc_limits.go index 2df997c..f04ba6f 100644 --- a/vendor/github.com/prometheus/procfs/proc_limits.go +++ b/vendor/github.com/prometheus/procfs/proc_limits.go @@ -1,3 +1,16 @@ +// Copyright 2018 The Prometheus Authors +// Licensed under the Apache License, Version 2.0 (the "License"); +// you may not use this file except in compliance with the License. +// You may obtain a copy of the License at +// +// http://www.apache.org/licenses/LICENSE-2.0 +// +// Unless required by applicable law or agreed to in writing, software +// distributed under the License is distributed on an "AS IS" BASIS, +// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. +// See the License for the specific language governing permissions and +// limitations under the License. + package procfs import ( @@ -13,46 +26,46 @@ import ( // http://man7.org/linux/man-pages/man2/getrlimit.2.html. type ProcLimits struct { // CPU time limit in seconds. - CPUTime int + CPUTime int64 // Maximum size of files that the process may create. - FileSize int + FileSize int64 // Maximum size of the process's data segment (initialized data, // uninitialized data, and heap). - DataSize int + DataSize int64 // Maximum size of the process stack in bytes. - StackSize int + StackSize int64 // Maximum size of a core file. - CoreFileSize int + CoreFileSize int64 // Limit of the process's resident set in pages. - ResidentSet int + ResidentSet int64 // Maximum number of processes that can be created for the real user ID of // the calling process. - Processes int + Processes int64 // Value one greater than the maximum file descriptor number that can be // opened by this process. - OpenFiles int + OpenFiles int64 // Maximum number of bytes of memory that may be locked into RAM. - LockedMemory int + LockedMemory int64 // Maximum size of the process's virtual memory address space in bytes. - AddressSpace int + AddressSpace int64 // Limit on the combined number of flock(2) locks and fcntl(2) leases that // this process may establish. - FileLocks int + FileLocks int64 // Limit of signals that may be queued for the real user ID of the calling // process. - PendingSignals int + PendingSignals int64 // Limit on the number of bytes that can be allocated for POSIX message // queues for the real user ID of the calling process. - MsqqueueSize int + MsqqueueSize int64 // Limit of the nice priority set using setpriority(2) or nice(2). - NicePriority int + NicePriority int64 // Limit of the real-time priority set using sched_setscheduler(2) or // sched_setparam(2). - RealtimePriority int + RealtimePriority int64 // Limit (in microseconds) on the amount of CPU time that a process // scheduled under a real-time scheduling policy may consume without making // a blocking system call. - RealtimeTimeout int + RealtimeTimeout int64 } const ( @@ -125,13 +138,13 @@ func (p Proc) NewLimits() (ProcLimits, error) { return l, s.Err() } -func parseInt(s string) (int, error) { +func parseInt(s string) (int64, error) { if s == limitsUnlimited { return -1, nil } - i, err := strconv.ParseInt(s, 10, 32) + i, err := strconv.ParseInt(s, 10, 64) if err != nil { return 0, fmt.Errorf("couldn't parse value %s: %s", s, err) } - return int(i), nil + return i, nil } diff --git a/vendor/github.com/prometheus/procfs/proc_ns.go b/vendor/github.com/prometheus/procfs/proc_ns.go new file mode 100644 index 0000000..d06c26e --- /dev/null +++ b/vendor/github.com/prometheus/procfs/proc_ns.go @@ -0,0 +1,68 @@ +// Copyright 2018 The Prometheus Authors +// Licensed under the Apache License, Version 2.0 (the "License"); +// you may not use this file except in compliance with the License. +// You may obtain a copy of the License at +// +// http://www.apache.org/licenses/LICENSE-2.0 +// +// Unless required by applicable law or agreed to in writing, software +// distributed under the License is distributed on an "AS IS" BASIS, +// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. +// See the License for the specific language governing permissions and +// limitations under the License. + +package procfs + +import ( + "fmt" + "os" + "strconv" + "strings" +) + +// Namespace represents a single namespace of a process. +type Namespace struct { + Type string // Namespace type. + Inode uint32 // Inode number of the namespace. If two processes are in the same namespace their inodes will match. +} + +// Namespaces contains all of the namespaces that the process is contained in. +type Namespaces map[string]Namespace + +// NewNamespaces reads from /proc/[pid/ns/* to get the namespaces of which the +// process is a member. +func (p Proc) NewNamespaces() (Namespaces, error) { + d, err := os.Open(p.path("ns")) + if err != nil { + return nil, err + } + defer d.Close() + + names, err := d.Readdirnames(-1) + if err != nil { + return nil, fmt.Errorf("failed to read contents of ns dir: %v", err) + } + + ns := make(Namespaces, len(names)) + for _, name := range names { + target, err := os.Readlink(p.path("ns", name)) + if err != nil { + return nil, err + } + + fields := strings.SplitN(target, ":", 2) + if len(fields) != 2 { + return nil, fmt.Errorf("failed to parse namespace type and inode from '%v'", target) + } + + typ := fields[0] + inode, err := strconv.ParseUint(strings.Trim(fields[1], "[]"), 10, 32) + if err != nil { + return nil, fmt.Errorf("failed to parse inode from '%v': %v", fields[1], err) + } + + ns[name] = Namespace{typ, uint32(inode)} + } + + return ns, nil +} diff --git a/vendor/github.com/prometheus/procfs/proc_stat.go b/vendor/github.com/prometheus/procfs/proc_stat.go index 724e271..3cf2a9f 100644 --- a/vendor/github.com/prometheus/procfs/proc_stat.go +++ b/vendor/github.com/prometheus/procfs/proc_stat.go @@ -1,3 +1,16 @@ +// Copyright 2018 The Prometheus Authors +// Licensed under the Apache License, Version 2.0 (the "License"); +// you may not use this file except in compliance with the License. +// You may obtain a copy of the License at +// +// http://www.apache.org/licenses/LICENSE-2.0 +// +// Unless required by applicable law or agreed to in writing, software +// distributed under the License is distributed on an "AS IS" BASIS, +// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. +// See the License for the specific language governing permissions and +// limitations under the License. + package procfs import ( diff --git a/vendor/github.com/prometheus/procfs/stat.go b/vendor/github.com/prometheus/procfs/stat.go index 701f4df..61eb6b0 100644 --- a/vendor/github.com/prometheus/procfs/stat.go +++ b/vendor/github.com/prometheus/procfs/stat.go @@ -1,3 +1,16 @@ +// Copyright 2018 The Prometheus Authors +// Licensed under the Apache License, Version 2.0 (the "License"); +// you may not use this file except in compliance with the License. +// You may obtain a copy of the License at +// +// http://www.apache.org/licenses/LICENSE-2.0 +// +// Unless required by applicable law or agreed to in writing, software +// distributed under the License is distributed on an "AS IS" BASIS, +// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. +// See the License for the specific language governing permissions and +// limitations under the License. + package procfs import ( diff --git a/vendor/github.com/prometheus/procfs/ttar b/vendor/github.com/prometheus/procfs/ttar index 8227a4a..b0171a1 100644 --- a/vendor/github.com/prometheus/procfs/ttar +++ b/vendor/github.com/prometheus/procfs/ttar @@ -1,11 +1,26 @@ #!/usr/bin/env bash + # Purpose: plain text tar format # Limitations: - only suitable for text files, directories, and symlinks # - stores only filename, content, and mode # - not designed for untrusted input - +# # Note: must work with bash version 3.2 (macOS) +# Copyright 2017 Roger Luethi +# +# Licensed under the Apache License, Version 2.0 (the "License"); +# you may not use this file except in compliance with the License. +# You may obtain a copy of the License at +# +# http://www.apache.org/licenses/LICENSE-2.0 +# +# Unless required by applicable law or agreed to in writing, software +# distributed under the License is distributed on an "AS IS" BASIS, +# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. +# See the License for the specific language governing permissions and +# limitations under the License. + set -o errexit -o nounset # Sanitize environment (for instance, standard sorting of glob matches) @@ -13,6 +28,55 @@ export LC_ALL=C path="" CMD="" +ARG_STRING="$*" + +#------------------------------------------------------------------------------ +# Not all sed implementations can work on null bytes. In order to make ttar +# work out of the box on macOS, use Python as a stream editor. + +USE_PYTHON=0 + +PYTHON_CREATE_FILTER=$(cat << 'PCF' +#!/usr/bin/env python + +import re +import sys + +for line in sys.stdin: + line = re.sub(r'EOF', r'\EOF', line) + line = re.sub(r'NULLBYTE', r'\NULLBYTE', line) + line = re.sub('\x00', r'NULLBYTE', line) + sys.stdout.write(line) +PCF +) + +PYTHON_EXTRACT_FILTER=$(cat << 'PEF' +#!/usr/bin/env python + +import re +import sys + +for line in sys.stdin: + line = re.sub(r'(?/dev/null; then + echo "ERROR Python not found. Aborting." + exit 2 + fi + USE_PYTHON=1 + fi +} + +#------------------------------------------------------------------------------ function usage { bname=$(basename "$0") @@ -23,6 +87,7 @@ Usage: $bname [-C ] -c -f (create archive) Options: -C (change directory) + -v (verbose) Example: Change to sysfs directory, create ttar file from fixtures directory $bname -C sysfs -c -f sysfs/fixtures.ttar fixtures/ @@ -45,6 +110,8 @@ function set_cmd { CMD=$1 } +unset VERBOSE + while getopts :cf:htxvC: opt; do case $opt in c) @@ -142,8 +209,37 @@ function extract { fi while IFS= read -r line; do line_no=$(( line_no + 1 )) + local eof_without_newline if [ "$size" -gt 0 ]; then - echo "$line" >> "$path" + if [[ "$line" =~ [^\\]EOF ]]; then + # An EOF not preceeded by a backslash indicates that the line + # does not end with a newline + eof_without_newline=1 + else + eof_without_newline=0 + fi + # Replace NULLBYTE with null byte if at beginning of line + # Replace NULLBYTE with null byte unless preceeded by backslash + # Remove one backslash in front of NULLBYTE (if any) + # Remove EOF unless preceeded by backslash + # Remove one backslash in front of EOF + if [ $USE_PYTHON -eq 1 ]; then + echo -n "$line" | python -c "$PYTHON_EXTRACT_FILTER" >> "$path" + else + # The repeated pattern makes up for sed's lack of negative + # lookbehind assertions (for consecutive null bytes). + echo -n "$line" | \ + sed -e 's/^NULLBYTE/\x0/g; + s/\([^\\]\)NULLBYTE/\1\x0/g; + s/\([^\\]\)NULLBYTE/\1\x0/g; + s/\\NULLBYTE/NULLBYTE/g; + s/\([^\\]\)EOF/\1/g; + s/\\EOF/EOF/g; + ' >> "$path" + fi + if [[ "$eof_without_newline" -eq 0 ]]; then + echo >> "$path" + fi size=$(( size - 1 )) continue fi @@ -187,11 +283,14 @@ function get_mode { local mfile=$1 if [ -z "${STAT_OPTION:-}" ]; then if stat -c '%a' "$mfile" >/dev/null 2>&1; then + # GNU stat STAT_OPTION='-c' STAT_FORMAT='%a' else + # BSD stat STAT_OPTION='-f' - STAT_FORMAT='%A' + # Octal output, user/group/other (omit file type, sticky bit) + STAT_FORMAT='%OLp' fi fi stat "${STAT_OPTION}" "${STAT_FORMAT}" "$mfile" @@ -200,6 +299,7 @@ function get_mode { function _create { shopt -s nullglob local mode + local eof_without_newline while (( "$#" )); do file=$1 if [ -L "$file" ]; then @@ -223,8 +323,30 @@ function _create { elif [ -f "$file" ]; then echo "Path: $file" lines=$(wc -l "$file"|awk '{print $1}') + eof_without_newline=0 + if [[ "$(wc -c "$file"|awk '{print $1}')" -gt 0 ]] && \ + [[ "$(tail -c 1 "$file" | wc -l)" -eq 0 ]]; then + eof_without_newline=1 + lines=$((lines+1)) + fi echo "Lines: $lines" - cat "$file" + # Add backslash in front of EOF + # Add backslash in front of NULLBYTE + # Replace null byte with NULLBYTE + if [ $USE_PYTHON -eq 1 ]; then + < "$file" python -c "$PYTHON_CREATE_FILTER" + else + < "$file" \ + sed 's/EOF/\\EOF/g; + s/NULLBYTE/\\NULLBYTE/g; + s/\x0/NULLBYTE/g; + ' + fi + if [[ "$eof_without_newline" -eq 1 ]]; then + # Finish line with EOF to indicate that the original line did + # not end with a linefeed + echo "EOF" + fi mode=$(get_mode "$file") echo "Mode: $mode" vecho "$mode $file" @@ -249,9 +371,12 @@ function create { rm "$ttar_file" fi exec > "$ttar_file" + echo "# Archive created by ttar $ARG_STRING" _create "$@" } +test_environment + if [ -n "${CDIR:-}" ]; then if [[ "$ARCHIVE" != /* ]]; then # Relative path: preserve the archive's location before changing diff --git a/vendor/github.com/prometheus/procfs/xfrm.go b/vendor/github.com/prometheus/procfs/xfrm.go index ffe9df5..8f1508f 100644 --- a/vendor/github.com/prometheus/procfs/xfrm.go +++ b/vendor/github.com/prometheus/procfs/xfrm.go @@ -113,7 +113,7 @@ func (fs FS) NewXfrmStat() (XfrmStat, error) { if len(fields) != 2 { return XfrmStat{}, fmt.Errorf( - "couldnt parse %s line %s", file.Name(), s.Text()) + "couldn't parse %s line %s", file.Name(), s.Text()) } name := fields[0] diff --git a/vendor/github.com/prometheus/procfs/xfs/parse.go b/vendor/github.com/prometheus/procfs/xfs/parse.go index c8f6279..2bc0ef3 100644 --- a/vendor/github.com/prometheus/procfs/xfs/parse.go +++ b/vendor/github.com/prometheus/procfs/xfs/parse.go @@ -17,8 +17,9 @@ import ( "bufio" "fmt" "io" - "strconv" "strings" + + "github.com/prometheus/procfs/internal/util" ) // ParseStats parses a Stats from an input io.Reader, using the format @@ -68,7 +69,7 @@ func ParseStats(r io.Reader) (*Stats, error) { // Extended precision counters are uint64 values. if label == fieldXpc { - us, err := parseUint64s(ss[1:]) + us, err := util.ParseUint64s(ss[1:]) if err != nil { return nil, err } @@ -82,7 +83,7 @@ func ParseStats(r io.Reader) (*Stats, error) { } // All other counters are uint32 values. - us, err := parseUint32s(ss[1:]) + us, err := util.ParseUint32s(ss[1:]) if err != nil { return nil, err } @@ -327,33 +328,3 @@ func extendedPrecisionStats(us []uint64) (ExtendedPrecisionStats, error) { ReadBytes: us[2], }, nil } - -// parseUint32s parses a slice of strings into a slice of uint32s. -func parseUint32s(ss []string) ([]uint32, error) { - us := make([]uint32, 0, len(ss)) - for _, s := range ss { - u, err := strconv.ParseUint(s, 10, 32) - if err != nil { - return nil, err - } - - us = append(us, uint32(u)) - } - - return us, nil -} - -// parseUint64s parses a slice of strings into a slice of uint64s. -func parseUint64s(ss []string) ([]uint64, error) { - us := make([]uint64, 0, len(ss)) - for _, s := range ss { - u, err := strconv.ParseUint(s, 10, 64) - if err != nil { - return nil, err - } - - us = append(us, u) - } - - return us, nil -} diff --git a/vendor/modules.txt b/vendor/modules.txt index 5b7e1e4..c626947 100644 --- a/vendor/modules.txt +++ b/vendor/modules.txt @@ -3,27 +3,30 @@ github.com/alecthomas/template github.com/alecthomas/template/parse # github.com/alecthomas/units v0.0.0-20151022065526-2efee857e7cf github.com/alecthomas/units -# github.com/beorn7/perks v0.0.0-20160804104726-4c0e84591b9a +# github.com/beorn7/perks v0.0.0-20180321164747-3a771d992973 github.com/beorn7/perks/quantile # github.com/golang/protobuf v1.2.0 github.com/golang/protobuf/proto # github.com/howeyc/fsnotify v0.0.0-20151003194602-f0c08ee9c607 github.com/howeyc/fsnotify -# github.com/matttproud/golang_protobuf_extensions v1.0.0 +# github.com/matttproud/golang_protobuf_extensions v1.0.1 github.com/matttproud/golang_protobuf_extensions/pbutil -# github.com/prometheus/client_golang v0.8.0 +# github.com/prometheus/client_golang v0.9.2 github.com/prometheus/client_golang/prometheus -# github.com/prometheus/client_model v0.0.0-20170216185247-6f3806018612 +github.com/prometheus/client_golang/prometheus/internal +# github.com/prometheus/client_model v0.0.0-20180712105110-5c3871d89910 github.com/prometheus/client_model/go -# github.com/prometheus/common v0.0.0-20170731114204-61f87aac8082 +# github.com/prometheus/common v0.0.0-20181126121408-4724e9255275 github.com/prometheus/common/log github.com/prometheus/common/model github.com/prometheus/common/version github.com/prometheus/common/expfmt github.com/prometheus/common/internal/bitbucket.org/ww/goautoneg -# github.com/prometheus/procfs v0.0.0-20170703101242-e645f4e5aaa8 +# github.com/prometheus/procfs v0.0.0-20181204211112-1dc9a6cbc91a github.com/prometheus/procfs +github.com/prometheus/procfs/nfs github.com/prometheus/procfs/xfs +github.com/prometheus/procfs/internal/util # github.com/sirupsen/logrus v1.0.3 github.com/sirupsen/logrus # golang.org/x/crypto v0.0.0-20170825220121-81e90905daef