Merge pull request #365 from glightfoot/segment-numbers

Support metric name segments starting with numbers
This commit is contained in:
Matthias Rampke 2021-03-26 18:20:30 +01:00 committed by GitHub
commit a8c09aaa97
No known key found for this signature in database
GPG key ID: 4AEE18F83AFDEB23
2 changed files with 78 additions and 3 deletions

View file

@ -28,10 +28,14 @@ import (
) )
var ( var (
statsdMetricRE = `[a-zA-Z_](-?[a-zA-Z0-9_])*` // The first segment of a match cannot start with a number
templateReplaceRE = `(\$\{?\d+\}?)` statsdMetricRE = `[a-zA-Z_](-?[a-zA-Z0-9_])*`
// The subsequent segments of a match can start with a number
// See https://github.com/prometheus/statsd_exporter/issues/328
statsdMetricSubsequentRE = `[a-zA-Z0-9_](-?[a-zA-Z0-9_])*`
templateReplaceRE = `(\$\{?\d+\}?)`
metricLineRE = regexp.MustCompile(`^(\*\.|` + statsdMetricRE + `\.)+(\*|` + statsdMetricRE + `)$`) metricLineRE = regexp.MustCompile(`^(\*|` + statsdMetricRE + `)(\.\*|\.` + statsdMetricSubsequentRE + `)*$`)
metricNameRE = regexp.MustCompile(`^([a-zA-Z_]|` + templateReplaceRE + `)([a-zA-Z0-9_]|` + templateReplaceRE + `)*$`) metricNameRE = regexp.MustCompile(`^([a-zA-Z_]|` + templateReplaceRE + `)([a-zA-Z0-9_]|` + templateReplaceRE + `)*$`)
labelNameRE = regexp.MustCompile(`^[a-zA-Z_][a-zA-Z0-9_]+$`) labelNameRE = regexp.MustCompile(`^[a-zA-Z_][a-zA-Z0-9_]+$`)
) )

View file

@ -355,6 +355,77 @@ mappings:
}, },
}, },
}, },
{
testName: "Match metric segment with a number",
config: `
mappings:
- match: test.99.myapp.*
name: "name"
labels:
label: "${1}_foo"
`,
mappings: mappings{
{
statsdMetric: "test.99.myapp.create",
name: "name",
labels: map[string]string{
"label": "create_foo",
},
},
},
},
{
testName: "Match metric segment starting with a number",
config: `
mappings:
- match: test.99test.myapp.*
name: "name"
labels:
label: "${1}_foo"
`,
mappings: mappings{
{
statsdMetric: "test.99test.myapp.create",
name: "name",
labels: map[string]string{
"label": "create_foo",
},
},
},
},
{
testName: "Match metric segment with a number #328 example",
config: `
mappings:
- match: kafka.server.FetcherStats.brokerHost.hostname.brokerPort.9092.clientId.ReplicaFetcherThread-0-1.BytesPerSec.1MinuteRate.gauge
name: "example_name"
`,
mappings: mappings{
{
statsdMetric: "kafka.server.FetcherStats.brokerHost.hostname.brokerPort.9092.clientId.ReplicaFetcherThread-0-1.BytesPerSec.1MinuteRate.gauge",
name: "example_name",
},
},
},
{
testName: "Single segment match",
config: `
mappings:
- match: '*'
name: single_segment
labels:
label: "${1}"
`,
mappings: mappings{
{
statsdMetric: "test",
name: "single_segment",
labels: map[string]string{
"label": "test",
},
},
},
},
{ {
testName: "Config with bad metric line", testName: "Config with bad metric line",
config: `--- config: `---