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Move mapper to a package

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This allows the mapping logic and configuration format to be re-used by
the graphite exporter.

Enables prometheus/graphite_exporter#37, cf. https://github.com/prometheus/graphite_exporter/pull/52#issuecomment-412324849

Signed-off-by: Matthias Rampke <mr@soundcloud.com>
This commit is contained in:
Matthias Rampke 2018-08-10 12:28:38 +00:00
parent 419e27d284
commit 124c5b88d0
No known key found for this signature in database
GPG key ID: 2CDE413A9BD0A5BC
11 changed files with 148 additions and 118 deletions
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58
exporter.go
View file

@ -29,6 +29,8 @@ import (
"github.com/prometheus/client_golang/prometheus" "github.com/prometheus/client_golang/prometheus"
"github.com/prometheus/common/log" "github.com/prometheus/common/log"
"github.com/prometheus/common/model" "github.com/prometheus/common/model"
"github.com/prometheus/statsd_exporter/mapper"
) )
const ( const (
@ -117,17 +119,17 @@ func (c *GaugeContainer) Get(metricName string, labels prometheus.Labels, help s
type SummaryContainer struct { type SummaryContainer struct {
Elements map[uint64]prometheus.Summary Elements map[uint64]prometheus.Summary
mapper *metricMapper mapper *mapper.MetricMapper
} }
func NewSummaryContainer(mapper *metricMapper) *SummaryContainer { func NewSummaryContainer(mapper *mapper.MetricMapper) *SummaryContainer {
return &SummaryContainer{ return &SummaryContainer{
Elements: make(map[uint64]prometheus.Summary), Elements: make(map[uint64]prometheus.Summary),
mapper: mapper, mapper: mapper,
} }
} }
func (c *SummaryContainer) Get(metricName string, labels prometheus.Labels, help string, mapping *metricMapping) (prometheus.Summary, error) { func (c *SummaryContainer) Get(metricName string, labels prometheus.Labels, help string, mapping *mapper.MetricMapping) (prometheus.Summary, error) {
hash := hashNameAndLabels(metricName, labels) hash := hashNameAndLabels(metricName, labels)
summary, ok := c.Elements[hash] summary, ok := c.Elements[hash]
if !ok { if !ok {
@ -156,17 +158,17 @@ func (c *SummaryContainer) Get(metricName string, labels prometheus.Labels, help
type HistogramContainer struct { type HistogramContainer struct {
Elements map[uint64]prometheus.Histogram Elements map[uint64]prometheus.Histogram
mapper *metricMapper mapper *mapper.MetricMapper
} }
func NewHistogramContainer(mapper *metricMapper) *HistogramContainer { func NewHistogramContainer(mapper *mapper.MetricMapper) *HistogramContainer {
return &HistogramContainer{ return &HistogramContainer{
Elements: make(map[uint64]prometheus.Histogram), Elements: make(map[uint64]prometheus.Histogram),
mapper: mapper, mapper: mapper,
} }
} }
func (c *HistogramContainer) Get(metricName string, labels prometheus.Labels, help string, mapping *metricMapping) (prometheus.Histogram, error) { func (c *HistogramContainer) Get(metricName string, labels prometheus.Labels, help string, mapping *mapper.MetricMapping) (prometheus.Histogram, error) {
hash := hashNameAndLabels(metricName, labels) hash := hashNameAndLabels(metricName, labels)
histogram, ok := c.Elements[hash] histogram, ok := c.Elements[hash]
if !ok { if !ok {
@ -193,7 +195,7 @@ type Event interface {
MetricName() string MetricName() string
Value() float64 Value() float64
Labels() map[string]string Labels() map[string]string
MetricType() metricType MetricType() mapper.MetricType
} }
type CounterEvent struct { type CounterEvent struct {
@ -202,10 +204,10 @@ type CounterEvent struct {
labels map[string]string labels map[string]string
} }
func (c *CounterEvent) MetricName() string { return c.metricName } func (c *CounterEvent) MetricName() string { return c.metricName }
func (c *CounterEvent) Value() float64 { return c.value } func (c *CounterEvent) Value() float64 { return c.value }
func (c *CounterEvent) Labels() map[string]string { return c.labels } func (c *CounterEvent) Labels() map[string]string { return c.labels }
func (c *CounterEvent) MetricType() metricType { return metricTypeCounter } func (c *CounterEvent) MetricType() mapper.MetricType { return mapper.MetricTypeCounter }
type GaugeEvent struct { type GaugeEvent struct {
metricName string metricName string
@ -214,10 +216,10 @@ type GaugeEvent struct {
labels map[string]string labels map[string]string
} }
func (g *GaugeEvent) MetricName() string { return g.metricName } func (g *GaugeEvent) MetricName() string { return g.metricName }
func (g *GaugeEvent) Value() float64 { return g.value } func (g *GaugeEvent) Value() float64 { return g.value }
func (c *GaugeEvent) Labels() map[string]string { return c.labels } func (c *GaugeEvent) Labels() map[string]string { return c.labels }
func (c *GaugeEvent) MetricType() metricType { return metricTypeGauge } func (c *GaugeEvent) MetricType() mapper.MetricType { return mapper.MetricTypeGauge }
type TimerEvent struct { type TimerEvent struct {
metricName string metricName string
@ -225,10 +227,10 @@ type TimerEvent struct {
labels map[string]string labels map[string]string
} }
func (t *TimerEvent) MetricName() string { return t.metricName } func (t *TimerEvent) MetricName() string { return t.metricName }
func (t *TimerEvent) Value() float64 { return t.value } func (t *TimerEvent) Value() float64 { return t.value }
func (c *TimerEvent) Labels() map[string]string { return c.labels } func (c *TimerEvent) Labels() map[string]string { return c.labels }
func (c *TimerEvent) MetricType() metricType { return metricTypeTimer } func (c *TimerEvent) MetricType() mapper.MetricType { return mapper.MetricTypeTimer }
type Events []Event type Events []Event
@ -237,7 +239,7 @@ type Exporter struct {
Gauges *GaugeContainer Gauges *GaugeContainer
Summaries *SummaryContainer Summaries *SummaryContainer
Histograms *HistogramContainer Histograms *HistogramContainer
mapper *metricMapper mapper *mapper.MetricMapper
} }
func escapeMetricName(metricName string) string { func escapeMetricName(metricName string) string {
@ -263,12 +265,12 @@ func (b *Exporter) Listen(e <-chan Events) {
metricName := "" metricName := ""
prometheusLabels := event.Labels() prometheusLabels := event.Labels()
mapping, labels, present := b.mapper.getMapping(event.MetricName(), event.MetricType()) mapping, labels, present := b.mapper.GetMapping(event.MetricName(), event.MetricType())
if mapping == nil { if mapping == nil {
mapping = &metricMapping{} mapping = &mapper.MetricMapping{}
} }
if mapping.Action == actionTypeDrop { if mapping.Action == mapper.ActionTypeDrop {
continue continue
} }
@ -332,16 +334,16 @@ func (b *Exporter) Listen(e <-chan Events) {
} }
case *TimerEvent: case *TimerEvent:
t := timerTypeDefault t := mapper.TimerTypeDefault
if mapping != nil { if mapping != nil {
t = mapping.TimerType t = mapping.TimerType
} }
if t == timerTypeDefault { if t == mapper.TimerTypeDefault {
t = b.mapper.Defaults.TimerType t = b.mapper.Defaults.TimerType
} }
switch t { switch t {
case timerTypeHistogram: case mapper.TimerTypeHistogram:
histogram, err := b.Histograms.Get( histogram, err := b.Histograms.Get(
metricName, metricName,
prometheusLabels, prometheusLabels,
@ -356,7 +358,7 @@ func (b *Exporter) Listen(e <-chan Events) {
conflictingEventStats.WithLabelValues("timer").Inc() conflictingEventStats.WithLabelValues("timer").Inc()
} }
case timerTypeDefault, timerTypeSummary: case mapper.TimerTypeDefault, mapper.TimerTypeSummary:
summary, err := b.Summaries.Get( summary, err := b.Summaries.Get(
metricName, metricName,
prometheusLabels, prometheusLabels,
@ -383,7 +385,7 @@ func (b *Exporter) Listen(e <-chan Events) {
} }
} }
func NewExporter(mapper *metricMapper) *Exporter { func NewExporter(mapper *mapper.MetricMapper) *Exporter {
return &Exporter{ return &Exporter{
Counters: NewCounterContainer(), Counters: NewCounterContainer(),
Gauges: NewGaugeContainer(), Gauges: NewGaugeContainer(),

10
exporter_test.go
View file

@ -20,6 +20,8 @@ import (
"time" "time"
"github.com/prometheus/client_golang/prometheus" "github.com/prometheus/client_golang/prometheus"
"github.com/prometheus/statsd_exporter/mapper"
) )
// TestNegativeCounter validates when we send a negative // TestNegativeCounter validates when we send a negative
@ -44,7 +46,7 @@ func TestNegativeCounter(t *testing.T) {
}, },
} }
events <- c events <- c
ex := NewExporter(&metricMapper{}) ex := NewExporter(&mapper.MetricMapper{})
// Close channel to signify we are done with the listener after a short period. // Close channel to signify we are done with the listener after a short period.
go func() { go func() {
@ -60,7 +62,7 @@ func TestNegativeCounter(t *testing.T) {
// It sends the same tags first with a valid value, then with an invalid one. // It sends the same tags first with a valid value, then with an invalid one.
// The exporter should not panic, but drop the invalid event // The exporter should not panic, but drop the invalid event
func TestInvalidUtf8InDatadogTagValue(t *testing.T) { func TestInvalidUtf8InDatadogTagValue(t *testing.T) {
ex := NewExporter(&metricMapper{}) ex := NewExporter(&mapper.MetricMapper{})
for _, l := range []statsDPacketHandler{&StatsDUDPListener{}, &mockStatsDTCPListener{}} { for _, l := range []statsDPacketHandler{&StatsDUDPListener{}, &mockStatsDTCPListener{}} {
events := make(chan Events, 2) events := make(chan Events, 2)
@ -96,8 +98,8 @@ func TestHistogramUnits(t *testing.T) {
}, },
} }
events <- c events <- c
ex := NewExporter(&metricMapper{}) ex := NewExporter(&mapper.MetricMapper{})
ex.mapper.Defaults.TimerType = timerTypeHistogram ex.mapper.Defaults.TimerType = mapper.TimerTypeHistogram
// Close channel to signify we are done with the listener after a short period. // Close channel to signify we are done with the listener after a short period.
go func() { go func() {

10
main.go
View file

@ -25,6 +25,8 @@ import (
"github.com/prometheus/client_golang/prometheus" "github.com/prometheus/client_golang/prometheus"
"github.com/prometheus/common/log" "github.com/prometheus/common/log"
"github.com/prometheus/common/version" "github.com/prometheus/common/version"
"github.com/prometheus/statsd_exporter/mapper"
) )
func init() { func init() {
@ -96,7 +98,7 @@ func tcpAddrFromString(addr string) *net.TCPAddr {
} }
} }
func watchConfig(fileName string, mapper *metricMapper) { func watchConfig(fileName string, mapper *mapper.MetricMapper) {
watcher, err := fsnotify.NewWatcher() watcher, err := fsnotify.NewWatcher()
if err != nil { if err != nil {
log.Fatal(err) log.Fatal(err)
@ -111,7 +113,7 @@ func watchConfig(fileName string, mapper *metricMapper) {
select { select {
case ev := <-watcher.Event: case ev := <-watcher.Event:
log.Infof("Config file changed (%s), attempting reload", ev) log.Infof("Config file changed (%s), attempting reload", ev)
err = mapper.initFromFile(fileName) err = mapper.InitFromFile(fileName)
if err != nil { if err != nil {
log.Errorln("Error reloading config:", err) log.Errorln("Error reloading config:", err)
configLoads.WithLabelValues("failure").Inc() configLoads.WithLabelValues("failure").Inc()
@ -186,9 +188,9 @@ func main() {
go tl.Listen(events) go tl.Listen(events)
} }
mapper := &metricMapper{} mapper := &mapper.MetricMapper{}
if *mappingConfig != "" { if *mappingConfig != "" {
err := mapper.initFromFile(*mappingConfig) err := mapper.InitFromFile(*mappingConfig)
if err != nil { if err != nil {
log.Fatal("Error loading config:", err) log.Fatal("Error loading config:", err)
} }

22
action.go → mapper/action.go
View file

@ -11,30 +11,30 @@
// See the License for the specific language governing permissions and // See the License for the specific language governing permissions and
// limitations under the License. // limitations under the License.
package main package mapper
import "fmt" import "fmt"
type actionType string type ActionType string
const ( const (
actionTypeMap actionType = "map" ActionTypeMap ActionType = "map"
actionTypeDrop actionType = "drop" ActionTypeDrop ActionType = "drop"
actionTypeDefault actionType = "" ActionTypeDefault ActionType = ""
) )
func (t *actionType) UnmarshalYAML(unmarshal func(interface{}) error) error { func (t *ActionType) UnmarshalYAML(unmarshal func(interface{}) error) error {
var v string var v string
if err := unmarshal(&v); err != nil { if err := unmarshal(&v); err != nil {
return err return err
} }
switch actionType(v) { switch ActionType(v) {
case actionTypeDrop: case ActionTypeDrop:
*t = actionTypeDrop *t = ActionTypeDrop
case actionTypeMap, actionTypeDefault: case ActionTypeMap, ActionTypeDefault:
*t = actionTypeMap *t = ActionTypeMap
default: default:
return fmt.Errorf("invalid action type %q", v) return fmt.Errorf("invalid action type %q", v)
} }

38
mapper.go → mapper/mapper.go
View file

@ -11,7 +11,7 @@
// See the License for the specific language governing permissions and // See the License for the specific language governing permissions and
// limitations under the License. // limitations under the License.
package main package mapper
import ( import (
"fmt" "fmt"
@ -34,32 +34,32 @@ var (
) )
type mapperConfigDefaults struct { type mapperConfigDefaults struct {
TimerType timerType `yaml:"timer_type"` TimerType TimerType `yaml:"timer_type"`
Buckets []float64 `yaml:"buckets"` Buckets []float64 `yaml:"buckets"`
Quantiles []metricObjective `yaml:"quantiles"` Quantiles []metricObjective `yaml:"quantiles"`
MatchType matchType `yaml:"match_type"` MatchType MatchType `yaml:"match_type"`
} }
type metricMapper struct { type MetricMapper struct {
Defaults mapperConfigDefaults `yaml:"defaults"` Defaults mapperConfigDefaults `yaml:"defaults"`
Mappings []metricMapping `yaml:"mappings"` Mappings []MetricMapping `yaml:"mappings"`
mutex sync.Mutex mutex sync.Mutex
} }
type matchMetricType string type matchMetricType string
type metricMapping struct { type MetricMapping struct {
Match string `yaml:"match"` Match string `yaml:"match"`
Name string `yaml:"name"` Name string `yaml:"name"`
regex *regexp.Regexp regex *regexp.Regexp
Labels prometheus.Labels `yaml:"labels"` Labels prometheus.Labels `yaml:"labels"`
TimerType timerType `yaml:"timer_type"` TimerType TimerType `yaml:"timer_type"`
Buckets []float64 `yaml:"buckets"` Buckets []float64 `yaml:"buckets"`
Quantiles []metricObjective `yaml:"quantiles"` Quantiles []metricObjective `yaml:"quantiles"`
MatchType matchType `yaml:"match_type"` MatchType MatchType `yaml:"match_type"`
HelpText string `yaml:"help"` HelpText string `yaml:"help"`
Action actionType `yaml:"action"` Action ActionType `yaml:"action"`
MatchMetricType metricType `yaml:"match_metric_type"` MatchMetricType MetricType `yaml:"match_metric_type"`
} }
type metricObjective struct { type metricObjective struct {
@ -73,8 +73,8 @@ var defaultQuantiles = []metricObjective{
{Quantile: 0.99, Error: 0.001}, {Quantile: 0.99, Error: 0.001},
} }
func (m *metricMapper) initFromYAMLString(fileContents string) error { func (m *MetricMapper) InitFromYAMLString(fileContents string) error {
var n metricMapper var n MetricMapper
if err := yaml.Unmarshal([]byte(fileContents), &n); err != nil { if err := yaml.Unmarshal([]byte(fileContents), &n); err != nil {
return err return err
@ -88,8 +88,8 @@ func (m *metricMapper) initFromYAMLString(fileContents string) error {
n.Defaults.Quantiles = defaultQuantiles n.Defaults.Quantiles = defaultQuantiles
} }
if n.Defaults.MatchType == matchTypeDefault { if n.Defaults.MatchType == MatchTypeDefault {
n.Defaults.MatchType = matchTypeGlob n.Defaults.MatchType = MatchTypeGlob
} }
for i := range n.Mappings { for i := range n.Mappings {
@ -115,10 +115,10 @@ func (m *metricMapper) initFromYAMLString(fileContents string) error {
} }
if currentMapping.Action == "" { if currentMapping.Action == "" {
currentMapping.Action = actionTypeMap currentMapping.Action = ActionTypeMap
} }
if currentMapping.MatchType == matchTypeGlob { if currentMapping.MatchType == MatchTypeGlob {
if !metricLineRE.MatchString(currentMapping.Match) { if !metricLineRE.MatchString(currentMapping.Match) {
return fmt.Errorf("invalid match: %s", currentMapping.Match) return fmt.Errorf("invalid match: %s", currentMapping.Match)
} }
@ -164,15 +164,15 @@ func (m *metricMapper) initFromYAMLString(fileContents string) error {
return nil return nil
} }
func (m *metricMapper) initFromFile(fileName string) error { func (m *MetricMapper) InitFromFile(fileName string) error {
mappingStr, err := ioutil.ReadFile(fileName) mappingStr, err := ioutil.ReadFile(fileName)
if err != nil { if err != nil {
return err return err
} }
return m.initFromYAMLString(string(mappingStr)) return m.InitFromYAMLString(string(mappingStr))
} }
func (m *metricMapper) getMapping(statsdMetric string, statsdMetricType metricType) (*metricMapping, prometheus.Labels, bool) { func (m *MetricMapper) GetMapping(statsdMetric string, statsdMetricType MetricType) (*MetricMapping, prometheus.Labels, bool) {
m.mutex.Lock() m.mutex.Lock()
defer m.mutex.Unlock() defer m.mutex.Unlock()

24
mapper_test.go → mapper/mapper_test.go
View file

@ -11,7 +11,7 @@
// See the License for the specific language governing permissions and // See the License for the specific language governing permissions and
// limitations under the License. // limitations under the License.
package main package mapper
import ( import (
"testing" "testing"
@ -473,9 +473,9 @@ mappings:
}, },
} }
mapper := metricMapper{} mapper := MetricMapper{}
for i, scenario := range scenarios { for i, scenario := range scenarios {
err := mapper.initFromYAMLString(scenario.config) err := mapper.InitFromYAMLString(scenario.config)
if err != nil && !scenario.configBad { if err != nil && !scenario.configBad {
t.Fatalf("%d. Config load error: %s %s", i, scenario.config, err) t.Fatalf("%d. Config load error: %s %s", i, scenario.config, err)
} }
@ -483,9 +483,9 @@ mappings:
t.Fatalf("%d. Expected bad config, but loaded ok: %s", i, scenario.config) t.Fatalf("%d. Expected bad config, but loaded ok: %s", i, scenario.config)
} }
var dummyMetricType metricType = "" var dummyMetricType MetricType = ""
for metric, mapping := range scenario.mappings { for metric, mapping := range scenario.mappings {
m, labels, present := mapper.getMapping(metric, dummyMetricType) m, labels, present := mapper.GetMapping(metric, dummyMetricType)
if present && mapping.name != "" && m.Name != mapping.name { if present && mapping.name != "" && m.Name != mapping.name {
t.Fatalf("%d.%q: Expected name %v, got %v", i, metric, m.Name, mapping.name) t.Fatalf("%d.%q: Expected name %v, got %v", i, metric, m.Name, mapping.name)
} }
@ -522,7 +522,7 @@ func TestAction(t *testing.T) {
scenarios := []struct { scenarios := []struct {
config string config string
configBad bool configBad bool
expectedAction actionType expectedAction ActionType
}{ }{
{ {
// no action set // no action set
@ -532,7 +532,7 @@ mappings:
name: "foo" name: "foo"
`, `,
configBad: false, configBad: false,
expectedAction: actionTypeMap, expectedAction: ActionTypeMap,
}, },
{ {
// map action set // map action set
@ -543,7 +543,7 @@ mappings:
action: map action: map
`, `,
configBad: false, configBad: false,
expectedAction: actionTypeMap, expectedAction: ActionTypeMap,
}, },
{ {
// drop action set // drop action set
@ -554,7 +554,7 @@ mappings:
action: drop action: drop
`, `,
configBad: false, configBad: false,
expectedAction: actionTypeDrop, expectedAction: ActionTypeDrop,
}, },
{ {
// invalid action set // invalid action set
@ -565,13 +565,13 @@ mappings:
action: xyz action: xyz
`, `,
configBad: true, configBad: true,
expectedAction: actionTypeDrop, expectedAction: ActionTypeDrop,
}, },
} }
for i, scenario := range scenarios { for i, scenario := range scenarios {
mapper := metricMapper{} mapper := MetricMapper{}
err := mapper.initFromYAMLString(scenario.config) err := mapper.InitFromYAMLString(scenario.config)
if err != nil && !scenario.configBad { if err != nil && !scenario.configBad {
t.Fatalf("%d. Config load error: %s %s", i, scenario.config, err) t.Fatalf("%d. Config load error: %s %s", i, scenario.config, err)
} }

22
match.go → mapper/match.go
View file

@ -11,29 +11,29 @@
// See the License for the specific language governing permissions and // See the License for the specific language governing permissions and
// limitations under the License. // limitations under the License.
package main package mapper
import "fmt" import "fmt"
type matchType string type MatchType string
const ( const (
matchTypeGlob matchType = "glob" MatchTypeGlob MatchType = "glob"
matchTypeRegex matchType = "regex" MatchTypeRegex MatchType = "regex"
matchTypeDefault matchType = "" MatchTypeDefault MatchType = ""
) )
func (t *matchType) UnmarshalYAML(unmarshal func(interface{}) error) error { func (t *MatchType) UnmarshalYAML(unmarshal func(interface{}) error) error {
var v string var v string
if err := unmarshal(&v); err != nil { if err := unmarshal(&v); err != nil {
return err return err
} }
switch matchType(v) { switch MatchType(v) {
case matchTypeRegex: case MatchTypeRegex:
*t = matchTypeRegex *t = MatchTypeRegex
case matchTypeGlob, matchTypeDefault: case MatchTypeGlob, MatchTypeDefault:
*t = matchTypeGlob *t = MatchTypeGlob
default: default:
return fmt.Errorf("invalid match type %q", v) return fmt.Errorf("invalid match type %q", v)
} }

26
metric_type.go → mapper/metric_type.go
View file

@ -11,31 +11,31 @@
// See the License for the specific language governing permissions and // See the License for the specific language governing permissions and
// limitations under the License. // limitations under the License.
package main package mapper
import "fmt" import "fmt"
type metricType string type MetricType string
const ( const (
metricTypeCounter metricType = "counter" MetricTypeCounter MetricType = "counter"
metricTypeGauge metricType = "gauge" MetricTypeGauge MetricType = "gauge"
metricTypeTimer metricType = "timer" MetricTypeTimer MetricType = "timer"
) )
func (m *metricType) UnmarshalYAML(unmarshal func(interface{}) error) error { func (m *MetricType) UnmarshalYAML(unmarshal func(interface{}) error) error {
var v string var v string
if err := unmarshal(&v); err != nil { if err := unmarshal(&v); err != nil {
return err return err
} }
switch metricType(v) { switch MetricType(v) {
case metricTypeCounter: case MetricTypeCounter:
*m = metricTypeCounter *m = MetricTypeCounter
case metricTypeGauge: case MetricTypeGauge:
*m = metricTypeGauge *m = MetricTypeGauge
case metricTypeTimer: case MetricTypeTimer:
*m = metricTypeTimer *m = MetricTypeTimer
default: default:
return fmt.Errorf("invalid metric type '%s'", v) return fmt.Errorf("invalid metric type '%s'", v)
} }

29
mapper/telemetry.go Normal file
View file

@ -0,0 +1,29 @@
// Copyright 2013 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 mapper
import (
"github.com/prometheus/client_golang/prometheus"
)
var (
mappingsCount = prometheus.NewGauge(prometheus.GaugeOpts{
Name: "statsd_exporter_loaded_mappings",
Help: "The current number of configured metric mappings.",
})
)
func init() {
prometheus.MustRegister(mappingsCount)
}

22
timer.go → mapper/timer.go
View file

@ -11,29 +11,29 @@
// See the License for the specific language governing permissions and // See the License for the specific language governing permissions and
// limitations under the License. // limitations under the License.
package main package mapper
import "fmt" import "fmt"
type timerType string type TimerType string
const ( const (
timerTypeHistogram timerType = "histogram" TimerTypeHistogram TimerType = "histogram"
timerTypeSummary timerType = "summary" TimerTypeSummary TimerType = "summary"
timerTypeDefault timerType = "" TimerTypeDefault TimerType = ""
) )
func (t *timerType) UnmarshalYAML(unmarshal func(interface{}) error) error { func (t *TimerType) UnmarshalYAML(unmarshal func(interface{}) error) error {
var v string var v string
if err := unmarshal(&v); err != nil { if err := unmarshal(&v); err != nil {
return err return err
} }
switch timerType(v) { switch TimerType(v) {
case timerTypeHistogram: case TimerTypeHistogram:
*t = timerTypeHistogram *t = TimerTypeHistogram
case timerTypeSummary, timerTypeDefault: case TimerTypeSummary, TimerTypeDefault:
*t = timerTypeSummary *t = TimerTypeSummary
default: default:
return fmt.Errorf("invalid timer type '%s'", v) return fmt.Errorf("invalid timer type '%s'", v)
} }

5
telemetry.go
View file

@ -91,10 +91,6 @@ var (
}, },
[]string{"outcome"}, []string{"outcome"},
) )
mappingsCount = prometheus.NewGauge(prometheus.GaugeOpts{
Name: "statsd_exporter_loaded_mappings",
Help: "The current number of configured metric mappings.",
})
conflictingEventStats = prometheus.NewCounterVec( conflictingEventStats = prometheus.NewCounterVec(
prometheus.CounterOpts{ prometheus.CounterOpts{
Name: "statsd_exporter_events_conflict_total", Name: "statsd_exporter_events_conflict_total",
@ -116,6 +112,5 @@ func init() {
prometheus.MustRegister(tagsReceived) prometheus.MustRegister(tagsReceived)
prometheus.MustRegister(tagErrors) prometheus.MustRegister(tagErrors)
prometheus.MustRegister(configLoads) prometheus.MustRegister(configLoads)
prometheus.MustRegister(mappingsCount)
prometheus.MustRegister(conflictingEventStats) prometheus.MustRegister(conflictingEventStats)
} }