From 499ec8ef5091b5348540b60d5a34b9c4ce72a37b Mon Sep 17 00:00:00 2001 From: "dependabot[bot]" <49699333+dependabot[bot]@users.noreply.github.com> Date: Thu, 28 Dec 2023 04:16:38 +0000 Subject: [PATCH] Bump github.com/prometheus/client_golang from 1.17.0 to 1.18.0 Bumps [github.com/prometheus/client_golang](https://github.com/prometheus/client_golang) from 1.17.0 to 1.18.0. - [Release notes](https://github.com/prometheus/client_golang/releases) - [Changelog](https://github.com/prometheus/client_golang/blob/v1.18.0/CHANGELOG.md) - [Commits](https://github.com/prometheus/client_golang/compare/v1.17.0...v1.18.0) --- updated-dependencies: - dependency-name: github.com/prometheus/client_golang dependency-type: direct:production update-type: version-update:semver-minor ... Signed-off-by: dependabot[bot] --- go.mod | 2 +- go.sum | 4 +- .../client_golang/prometheus/histogram.go | 56 +++- .../client_golang/prometheus/labels.go | 2 + .../prometheus/process_collector_other.go | 4 +- .../prometheus/process_collector_wasip1.go | 26 ++ .../prometheus/testutil/promlint/problem.go | 33 ++ .../prometheus/testutil/promlint/promlint.go | 308 ++---------------- .../testutil/promlint/validation.go | 33 ++ .../validations/counter_validations.go | 40 +++ .../validations/generic_name_validations.go | 101 ++++++ .../promlint/validations/help_validations.go | 32 ++ .../validations/histogram_validations.go | 63 ++++ .../testutil/promlint/validations/units.go | 118 +++++++ .../prometheus/testutil/testutil.go | 15 + vendor/modules.txt | 3 +- 16 files changed, 544 insertions(+), 296 deletions(-) create mode 100644 vendor/github.com/prometheus/client_golang/prometheus/process_collector_wasip1.go create mode 100644 vendor/github.com/prometheus/client_golang/prometheus/testutil/promlint/problem.go create mode 100644 vendor/github.com/prometheus/client_golang/prometheus/testutil/promlint/validation.go create mode 100644 vendor/github.com/prometheus/client_golang/prometheus/testutil/promlint/validations/counter_validations.go create mode 100644 vendor/github.com/prometheus/client_golang/prometheus/testutil/promlint/validations/generic_name_validations.go create mode 100644 vendor/github.com/prometheus/client_golang/prometheus/testutil/promlint/validations/help_validations.go create mode 100644 vendor/github.com/prometheus/client_golang/prometheus/testutil/promlint/validations/histogram_validations.go create mode 100644 vendor/github.com/prometheus/client_golang/prometheus/testutil/promlint/validations/units.go diff --git a/go.mod b/go.mod index eea579f8..1bac27c0 100644 --- a/go.mod +++ b/go.mod @@ -7,7 +7,7 @@ require ( github.com/globalsign/mgo v0.0.0-20181015135952-eeefdecb41b8 github.com/onsi/ginkgo/v2 v2.13.2 github.com/onsi/gomega v1.30.0 - github.com/prometheus/client_golang v1.17.0 + github.com/prometheus/client_golang v1.18.0 github.com/prometheus/client_model v0.5.0 github.com/tsenart/vegeta/v12 v12.11.1 ) diff --git a/go.sum b/go.sum index fec93050..a3c484a3 100644 --- a/go.sum +++ b/go.sum @@ -51,8 +51,8 @@ github.com/pkg/errors v0.9.1 h1:FEBLx1zS214owpjy7qsBeixbURkuhQAwrK5UwLGTwt4= github.com/pkg/errors v0.9.1/go.mod h1:bwawxfHBFNV+L2hUp1rHADufV3IMtnDRdf1r5NINEl0= 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 v1.17.0 h1:rl2sfwZMtSthVU752MqfjQozy7blglC+1SOtjMAMh+Q= -github.com/prometheus/client_golang v1.17.0/go.mod h1:VeL+gMmOAxkS2IqfCq0ZmHSL+LjWfWDUmp1mBz9JgUY= +github.com/prometheus/client_golang v1.18.0 h1:HzFfmkOzH5Q8L8G+kSJKUx5dtG87sewO+FoDDqP5Tbk= +github.com/prometheus/client_golang v1.18.0/go.mod h1:T+GXkCk5wSJyOqMIzVgvvjFDlkOQntgjkJWKrN5txjA= github.com/prometheus/client_model v0.5.0 h1:VQw1hfvPvk3Uv6Qf29VrPF32JB6rtbgI6cYPYQjL0Qw= github.com/prometheus/client_model v0.5.0/go.mod h1:dTiFglRmd66nLR9Pv9f0mZi7B7fk5Pm3gvsjB5tr+kI= github.com/prometheus/common v0.45.0 h1:2BGz0eBc2hdMDLnO/8n0jeB3oPrt2D08CekT0lneoxM= diff --git a/vendor/github.com/prometheus/client_golang/prometheus/histogram.go b/vendor/github.com/prometheus/client_golang/prometheus/histogram.go index 1feba62c..b5c8bcb3 100644 --- a/vendor/github.com/prometheus/client_golang/prometheus/histogram.go +++ b/vendor/github.com/prometheus/client_golang/prometheus/histogram.go @@ -475,6 +475,9 @@ type HistogramOpts struct { // now is for testing purposes, by default it's time.Now. now func() time.Time + + // afterFunc is for testing purposes, by default it's time.AfterFunc. + afterFunc func(time.Duration, func()) *time.Timer } // HistogramVecOpts bundles the options to create a HistogramVec metric. @@ -526,7 +529,9 @@ func newHistogram(desc *Desc, opts HistogramOpts, labelValues ...string) Histogr if opts.now == nil { opts.now = time.Now } - + if opts.afterFunc == nil { + opts.afterFunc = time.AfterFunc + } h := &histogram{ desc: desc, upperBounds: opts.Buckets, @@ -536,6 +541,7 @@ func newHistogram(desc *Desc, opts HistogramOpts, labelValues ...string) Histogr nativeHistogramMinResetDuration: opts.NativeHistogramMinResetDuration, lastResetTime: opts.now(), now: opts.now, + afterFunc: opts.afterFunc, } if len(h.upperBounds) == 0 && opts.NativeHistogramBucketFactor <= 1 { h.upperBounds = DefBuckets @@ -716,9 +722,16 @@ type histogram struct { nativeHistogramMinResetDuration time.Duration // lastResetTime is protected by mtx. It is also used as created timestamp. lastResetTime time.Time + // resetScheduled is protected by mtx. It is true if a reset is + // scheduled for a later time (when nativeHistogramMinResetDuration has + // passed). + resetScheduled bool // now is for testing purposes, by default it's time.Now. now func() time.Time + + // afterFunc is for testing purposes, by default it's time.AfterFunc. + afterFunc func(time.Duration, func()) *time.Timer } func (h *histogram) Desc() *Desc { @@ -874,21 +887,31 @@ func (h *histogram) limitBuckets(counts *histogramCounts, value float64, bucket if h.maybeReset(hotCounts, coldCounts, coldIdx, value, bucket) { return } + // One of the other strategies will happen. To undo what they will do as + // soon as enough time has passed to satisfy + // h.nativeHistogramMinResetDuration, schedule a reset at the right time + // if we haven't done so already. + if h.nativeHistogramMinResetDuration > 0 && !h.resetScheduled { + h.resetScheduled = true + h.afterFunc(h.nativeHistogramMinResetDuration-h.now().Sub(h.lastResetTime), h.reset) + } + if h.maybeWidenZeroBucket(hotCounts, coldCounts) { return } h.doubleBucketWidth(hotCounts, coldCounts) } -// maybeReset resets the whole histogram if at least h.nativeHistogramMinResetDuration -// has been passed. It returns true if the histogram has been reset. The caller -// must have locked h.mtx. +// maybeReset resets the whole histogram if at least +// h.nativeHistogramMinResetDuration has been passed. It returns true if the +// histogram has been reset. The caller must have locked h.mtx. func (h *histogram) maybeReset( hot, cold *histogramCounts, coldIdx uint64, value float64, bucket int, ) bool { // We are using the possibly mocked h.now() rather than // time.Since(h.lastResetTime) to enable testing. - if h.nativeHistogramMinResetDuration == 0 || + if h.nativeHistogramMinResetDuration == 0 || // No reset configured. + h.resetScheduled || // Do not interefere if a reset is already scheduled. h.now().Sub(h.lastResetTime) < h.nativeHistogramMinResetDuration { return false } @@ -906,6 +929,29 @@ func (h *histogram) maybeReset( return true } +// reset resets the whole histogram. It locks h.mtx itself, i.e. it has to be +// called without having locked h.mtx. +func (h *histogram) reset() { + h.mtx.Lock() + defer h.mtx.Unlock() + + n := atomic.LoadUint64(&h.countAndHotIdx) + hotIdx := n >> 63 + coldIdx := (^n) >> 63 + hot := h.counts[hotIdx] + cold := h.counts[coldIdx] + // Completely reset coldCounts. + h.resetCounts(cold) + // Make coldCounts the new hot counts while resetting countAndHotIdx. + n = atomic.SwapUint64(&h.countAndHotIdx, coldIdx<<63) + count := n & ((1 << 63) - 1) + waitForCooldown(count, hot) + // Finally, reset the formerly hot counts, too. + h.resetCounts(hot) + h.lastResetTime = h.now() + h.resetScheduled = false +} + // maybeWidenZeroBucket widens the zero bucket until it includes the existing // buckets closest to the zero bucket (which could be two, if an equidistant // negative and a positive bucket exists, but usually it's only one bucket to be diff --git a/vendor/github.com/prometheus/client_golang/prometheus/labels.go b/vendor/github.com/prometheus/client_golang/prometheus/labels.go index b3c4eca2..c21911f2 100644 --- a/vendor/github.com/prometheus/client_golang/prometheus/labels.go +++ b/vendor/github.com/prometheus/client_golang/prometheus/labels.go @@ -165,6 +165,8 @@ func validateValuesInLabels(labels Labels, expectedNumberOfValues int) error { func validateLabelValues(vals []string, expectedNumberOfValues int) error { if len(vals) != expectedNumberOfValues { + // The call below makes vals escape, copy them to avoid that. + vals := append([]string(nil), vals...) return fmt.Errorf( "%w: expected %d label values but got %d in %#v", errInconsistentCardinality, expectedNumberOfValues, diff --git a/vendor/github.com/prometheus/client_golang/prometheus/process_collector_other.go b/vendor/github.com/prometheus/client_golang/prometheus/process_collector_other.go index c0152cdb..8c1136ce 100644 --- a/vendor/github.com/prometheus/client_golang/prometheus/process_collector_other.go +++ b/vendor/github.com/prometheus/client_golang/prometheus/process_collector_other.go @@ -11,8 +11,8 @@ // See the License for the specific language governing permissions and // limitations under the License. -//go:build !windows && !js -// +build !windows,!js +//go:build !windows && !js && !wasip1 +// +build !windows,!js,!wasip1 package prometheus diff --git a/vendor/github.com/prometheus/client_golang/prometheus/process_collector_wasip1.go b/vendor/github.com/prometheus/client_golang/prometheus/process_collector_wasip1.go new file mode 100644 index 00000000..d8d9a6d7 --- /dev/null +++ b/vendor/github.com/prometheus/client_golang/prometheus/process_collector_wasip1.go @@ -0,0 +1,26 @@ +// Copyright 2023 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. + +//go:build wasip1 +// +build wasip1 + +package prometheus + +func canCollectProcess() bool { + return false +} + +func (*processCollector) processCollect(chan<- Metric) { + // noop on this platform + return +} diff --git a/vendor/github.com/prometheus/client_golang/prometheus/testutil/promlint/problem.go b/vendor/github.com/prometheus/client_golang/prometheus/testutil/promlint/problem.go new file mode 100644 index 00000000..9ba42826 --- /dev/null +++ b/vendor/github.com/prometheus/client_golang/prometheus/testutil/promlint/problem.go @@ -0,0 +1,33 @@ +// Copyright 2020 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 promlint + +import dto "github.com/prometheus/client_model/go" + +// A Problem is an issue detected by a linter. +type Problem struct { + // The name of the metric indicated by this Problem. + Metric string + + // A description of the issue for this Problem. + Text string +} + +// newProblem is helper function to create a Problem. +func newProblem(mf *dto.MetricFamily, text string) Problem { + return Problem{ + Metric: mf.GetName(), + Text: text, + } +} diff --git a/vendor/github.com/prometheus/client_golang/prometheus/testutil/promlint/promlint.go b/vendor/github.com/prometheus/client_golang/prometheus/testutil/promlint/promlint.go index c8864b6c..dd29cccc 100644 --- a/vendor/github.com/prometheus/client_golang/prometheus/testutil/promlint/promlint.go +++ b/vendor/github.com/prometheus/client_golang/prometheus/testutil/promlint/promlint.go @@ -16,15 +16,11 @@ package promlint import ( "errors" - "fmt" "io" - "regexp" "sort" - "strings" - - "github.com/prometheus/common/expfmt" dto "github.com/prometheus/client_model/go" + "github.com/prometheus/common/expfmt" ) // A Linter is a Prometheus metrics linter. It identifies issues with metric @@ -37,23 +33,8 @@ type Linter struct { // of them. r io.Reader mfs []*dto.MetricFamily -} -// A Problem is an issue detected by a Linter. -type Problem struct { - // The name of the metric indicated by this Problem. - Metric string - - // A description of the issue for this Problem. - Text string -} - -// newProblem is helper function to create a Problem. -func newProblem(mf *dto.MetricFamily, text string) Problem { - return Problem{ - Metric: mf.GetName(), - Text: text, - } + customValidations []Validation } // New creates a new Linter that reads an input stream of Prometheus metrics in @@ -72,6 +53,14 @@ func NewWithMetricFamilies(mfs []*dto.MetricFamily) *Linter { } } +// AddCustomValidations adds custom validations to the linter. +func (l *Linter) AddCustomValidations(vs ...Validation) { + if l.customValidations == nil { + l.customValidations = make([]Validation, 0, len(vs)) + } + l.customValidations = append(l.customValidations, vs...) +} + // Lint performs a linting pass, returning a slice of Problems indicating any // issues found in the metrics stream. The slice is sorted by metric name // and issue description. @@ -91,11 +80,11 @@ func (l *Linter) Lint() ([]Problem, error) { return nil, err } - problems = append(problems, lint(mf)...) + problems = append(problems, l.lint(mf)...) } } for _, mf := range l.mfs { - problems = append(problems, lint(mf)...) + problems = append(problems, l.lint(mf)...) } // Ensure deterministic output. @@ -110,276 +99,25 @@ func (l *Linter) Lint() ([]Problem, error) { } // lint is the entry point for linting a single metric. -func lint(mf *dto.MetricFamily) []Problem { - fns := []func(mf *dto.MetricFamily) []Problem{ - lintHelp, - lintMetricUnits, - lintCounter, - lintHistogramSummaryReserved, - lintMetricTypeInName, - lintReservedChars, - lintCamelCase, - lintUnitAbbreviations, - } - - var problems []Problem - for _, fn := range fns { - problems = append(problems, fn(mf)...) - } - - // TODO(mdlayher): lint rules for specific metrics types. - return problems -} - -// lintHelp detects issues related to the help text for a metric. -func lintHelp(mf *dto.MetricFamily) []Problem { +func (l *Linter) lint(mf *dto.MetricFamily) []Problem { var problems []Problem - // Expect all metrics to have help text available. - if mf.Help == nil { - problems = append(problems, newProblem(mf, "no help text")) - } - - return problems -} - -// lintMetricUnits detects issues with metric unit names. -func lintMetricUnits(mf *dto.MetricFamily) []Problem { - var problems []Problem - - unit, base, ok := metricUnits(*mf.Name) - if !ok { - // No known units detected. - return nil - } - - // Unit is already a base unit. - if unit == base { - return nil - } - - problems = append(problems, newProblem(mf, fmt.Sprintf("use base unit %q instead of %q", base, unit))) - - return problems -} - -// lintCounter detects issues specific to counters, as well as patterns that should -// only be used with counters. -func lintCounter(mf *dto.MetricFamily) []Problem { - var problems []Problem - - isCounter := mf.GetType() == dto.MetricType_COUNTER - isUntyped := mf.GetType() == dto.MetricType_UNTYPED - hasTotalSuffix := strings.HasSuffix(mf.GetName(), "_total") - - switch { - case isCounter && !hasTotalSuffix: - problems = append(problems, newProblem(mf, `counter metrics should have "_total" suffix`)) - case !isUntyped && !isCounter && hasTotalSuffix: - problems = append(problems, newProblem(mf, `non-counter metrics should not have "_total" suffix`)) - } - - return problems -} - -// lintHistogramSummaryReserved detects when other types of metrics use names or labels -// reserved for use by histograms and/or summaries. -func lintHistogramSummaryReserved(mf *dto.MetricFamily) []Problem { - // These rules do not apply to untyped metrics. - t := mf.GetType() - if t == dto.MetricType_UNTYPED { - return nil - } - - var problems []Problem - - isHistogram := t == dto.MetricType_HISTOGRAM - isSummary := t == dto.MetricType_SUMMARY - - n := mf.GetName() - - if !isHistogram && strings.HasSuffix(n, "_bucket") { - problems = append(problems, newProblem(mf, `non-histogram metrics should not have "_bucket" suffix`)) - } - if !isHistogram && !isSummary && strings.HasSuffix(n, "_count") { - problems = append(problems, newProblem(mf, `non-histogram and non-summary metrics should not have "_count" suffix`)) - } - if !isHistogram && !isSummary && strings.HasSuffix(n, "_sum") { - problems = append(problems, newProblem(mf, `non-histogram and non-summary metrics should not have "_sum" suffix`)) - } - - for _, m := range mf.GetMetric() { - for _, l := range m.GetLabel() { - ln := l.GetName() - - if !isHistogram && ln == "le" { - problems = append(problems, newProblem(mf, `non-histogram metrics should not have "le" label`)) - } - if !isSummary && ln == "quantile" { - problems = append(problems, newProblem(mf, `non-summary metrics should not have "quantile" label`)) - } - } - } - - return problems -} - -// lintMetricTypeInName detects when metric types are included in the metric name. -func lintMetricTypeInName(mf *dto.MetricFamily) []Problem { - var problems []Problem - n := strings.ToLower(mf.GetName()) - - for i, t := range dto.MetricType_name { - if i == int32(dto.MetricType_UNTYPED) { - continue + for _, fn := range defaultValidations { + errs := fn(mf) + for _, err := range errs { + problems = append(problems, newProblem(mf, err.Error())) } - - typename := strings.ToLower(t) - if strings.Contains(n, "_"+typename+"_") || strings.HasSuffix(n, "_"+typename) { - problems = append(problems, newProblem(mf, fmt.Sprintf(`metric name should not include type '%s'`, typename))) - } - } - return problems -} - -// lintReservedChars detects colons in metric names. -func lintReservedChars(mf *dto.MetricFamily) []Problem { - var problems []Problem - if strings.Contains(mf.GetName(), ":") { - problems = append(problems, newProblem(mf, "metric names should not contain ':'")) - } - return problems -} - -var camelCase = regexp.MustCompile(`[a-z][A-Z]`) - -// lintCamelCase detects metric names and label names written in camelCase. -func lintCamelCase(mf *dto.MetricFamily) []Problem { - var problems []Problem - if camelCase.FindString(mf.GetName()) != "" { - problems = append(problems, newProblem(mf, "metric names should be written in 'snake_case' not 'camelCase'")) } - for _, m := range mf.GetMetric() { - for _, l := range m.GetLabel() { - if camelCase.FindString(l.GetName()) != "" { - problems = append(problems, newProblem(mf, "label names should be written in 'snake_case' not 'camelCase'")) + if l.customValidations != nil { + for _, fn := range l.customValidations { + errs := fn(mf) + for _, err := range errs { + problems = append(problems, newProblem(mf, err.Error())) } } } - return problems -} -// lintUnitAbbreviations detects abbreviated units in the metric name. -func lintUnitAbbreviations(mf *dto.MetricFamily) []Problem { - var problems []Problem - n := strings.ToLower(mf.GetName()) - for _, s := range unitAbbreviations { - if strings.Contains(n, "_"+s+"_") || strings.HasSuffix(n, "_"+s) { - problems = append(problems, newProblem(mf, "metric names should not contain abbreviated units")) - } - } + // TODO(mdlayher): lint rules for specific metrics types. return problems } - -// metricUnits attempts to detect known unit types used as part of a metric name, -// e.g. "foo_bytes_total" or "bar_baz_milligrams". -func metricUnits(m string) (unit, base string, ok bool) { - ss := strings.Split(m, "_") - - for _, s := range ss { - if base, found := units[s]; found { - return s, base, true - } - - for _, p := range unitPrefixes { - if strings.HasPrefix(s, p) { - if base, found := units[s[len(p):]]; found { - return s, base, true - } - } - } - } - - return "", "", false -} - -// Units and their possible prefixes recognized by this library. More can be -// added over time as needed. -var ( - // map a unit to the appropriate base unit. - units = map[string]string{ - // Base units. - "amperes": "amperes", - "bytes": "bytes", - "celsius": "celsius", // Also allow Celsius because it is common in typical Prometheus use cases. - "grams": "grams", - "joules": "joules", - "kelvin": "kelvin", // SI base unit, used in special cases (e.g. color temperature, scientific measurements). - "meters": "meters", // Both American and international spelling permitted. - "metres": "metres", - "seconds": "seconds", - "volts": "volts", - - // Non base units. - // Time. - "minutes": "seconds", - "hours": "seconds", - "days": "seconds", - "weeks": "seconds", - // Temperature. - "kelvins": "kelvin", - "fahrenheit": "celsius", - "rankine": "celsius", - // Length. - "inches": "meters", - "yards": "meters", - "miles": "meters", - // Bytes. - "bits": "bytes", - // Energy. - "calories": "joules", - // Mass. - "pounds": "grams", - "ounces": "grams", - } - - unitPrefixes = []string{ - "pico", - "nano", - "micro", - "milli", - "centi", - "deci", - "deca", - "hecto", - "kilo", - "kibi", - "mega", - "mibi", - "giga", - "gibi", - "tera", - "tebi", - "peta", - "pebi", - } - - // Common abbreviations that we'd like to discourage. - unitAbbreviations = []string{ - "s", - "ms", - "us", - "ns", - "sec", - "b", - "kb", - "mb", - "gb", - "tb", - "pb", - "m", - "h", - "d", - } -) diff --git a/vendor/github.com/prometheus/client_golang/prometheus/testutil/promlint/validation.go b/vendor/github.com/prometheus/client_golang/prometheus/testutil/promlint/validation.go new file mode 100644 index 00000000..f52ad9ea --- /dev/null +++ b/vendor/github.com/prometheus/client_golang/prometheus/testutil/promlint/validation.go @@ -0,0 +1,33 @@ +// Copyright 2020 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 promlint + +import ( + dto "github.com/prometheus/client_model/go" + + "github.com/prometheus/client_golang/prometheus/testutil/promlint/validations" +) + +type Validation = func(mf *dto.MetricFamily) []error + +var defaultValidations = []Validation{ + validations.LintHelp, + validations.LintMetricUnits, + validations.LintCounter, + validations.LintHistogramSummaryReserved, + validations.LintMetricTypeInName, + validations.LintReservedChars, + validations.LintCamelCase, + validations.LintUnitAbbreviations, +} diff --git a/vendor/github.com/prometheus/client_golang/prometheus/testutil/promlint/validations/counter_validations.go b/vendor/github.com/prometheus/client_golang/prometheus/testutil/promlint/validations/counter_validations.go new file mode 100644 index 00000000..f2c2c390 --- /dev/null +++ b/vendor/github.com/prometheus/client_golang/prometheus/testutil/promlint/validations/counter_validations.go @@ -0,0 +1,40 @@ +// Copyright 2020 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 validations + +import ( + "errors" + "strings" + + dto "github.com/prometheus/client_model/go" +) + +// LintCounter detects issues specific to counters, as well as patterns that should +// only be used with counters. +func LintCounter(mf *dto.MetricFamily) []error { + var problems []error + + isCounter := mf.GetType() == dto.MetricType_COUNTER + isUntyped := mf.GetType() == dto.MetricType_UNTYPED + hasTotalSuffix := strings.HasSuffix(mf.GetName(), "_total") + + switch { + case isCounter && !hasTotalSuffix: + problems = append(problems, errors.New(`counter metrics should have "_total" suffix`)) + case !isUntyped && !isCounter && hasTotalSuffix: + problems = append(problems, errors.New(`non-counter metrics should not have "_total" suffix`)) + } + + return problems +} diff --git a/vendor/github.com/prometheus/client_golang/prometheus/testutil/promlint/validations/generic_name_validations.go b/vendor/github.com/prometheus/client_golang/prometheus/testutil/promlint/validations/generic_name_validations.go new file mode 100644 index 00000000..bc8dbd1e --- /dev/null +++ b/vendor/github.com/prometheus/client_golang/prometheus/testutil/promlint/validations/generic_name_validations.go @@ -0,0 +1,101 @@ +// Copyright 2020 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 validations + +import ( + "errors" + "fmt" + "regexp" + "strings" + + dto "github.com/prometheus/client_model/go" +) + +var camelCase = regexp.MustCompile(`[a-z][A-Z]`) + +// LintMetricUnits detects issues with metric unit names. +func LintMetricUnits(mf *dto.MetricFamily) []error { + var problems []error + + unit, base, ok := metricUnits(*mf.Name) + if !ok { + // No known units detected. + return nil + } + + // Unit is already a base unit. + if unit == base { + return nil + } + + problems = append(problems, fmt.Errorf("use base unit %q instead of %q", base, unit)) + + return problems +} + +// LintMetricTypeInName detects when metric types are included in the metric name. +func LintMetricTypeInName(mf *dto.MetricFamily) []error { + var problems []error + n := strings.ToLower(mf.GetName()) + + for i, t := range dto.MetricType_name { + if i == int32(dto.MetricType_UNTYPED) { + continue + } + + typename := strings.ToLower(t) + if strings.Contains(n, "_"+typename+"_") || strings.HasSuffix(n, "_"+typename) { + problems = append(problems, fmt.Errorf(`metric name should not include type '%s'`, typename)) + } + } + return problems +} + +// LintReservedChars detects colons in metric names. +func LintReservedChars(mf *dto.MetricFamily) []error { + var problems []error + if strings.Contains(mf.GetName(), ":") { + problems = append(problems, errors.New("metric names should not contain ':'")) + } + return problems +} + +// LintCamelCase detects metric names and label names written in camelCase. +func LintCamelCase(mf *dto.MetricFamily) []error { + var problems []error + if camelCase.FindString(mf.GetName()) != "" { + problems = append(problems, errors.New("metric names should be written in 'snake_case' not 'camelCase'")) + } + + for _, m := range mf.GetMetric() { + for _, l := range m.GetLabel() { + if camelCase.FindString(l.GetName()) != "" { + problems = append(problems, errors.New("label names should be written in 'snake_case' not 'camelCase'")) + } + } + } + return problems +} + +// LintUnitAbbreviations detects abbreviated units in the metric name. +func LintUnitAbbreviations(mf *dto.MetricFamily) []error { + var problems []error + n := strings.ToLower(mf.GetName()) + for _, s := range unitAbbreviations { + if strings.Contains(n, "_"+s+"_") || strings.HasSuffix(n, "_"+s) { + problems = append(problems, errors.New("metric names should not contain abbreviated units")) + } + } + return problems +} diff --git a/vendor/github.com/prometheus/client_golang/prometheus/testutil/promlint/validations/help_validations.go b/vendor/github.com/prometheus/client_golang/prometheus/testutil/promlint/validations/help_validations.go new file mode 100644 index 00000000..1df29446 --- /dev/null +++ b/vendor/github.com/prometheus/client_golang/prometheus/testutil/promlint/validations/help_validations.go @@ -0,0 +1,32 @@ +// Copyright 2020 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 validations + +import ( + "errors" + + dto "github.com/prometheus/client_model/go" +) + +// LintHelp detects issues related to the help text for a metric. +func LintHelp(mf *dto.MetricFamily) []error { + var problems []error + + // Expect all metrics to have help text available. + if mf.Help == nil { + problems = append(problems, errors.New("no help text")) + } + + return problems +} diff --git a/vendor/github.com/prometheus/client_golang/prometheus/testutil/promlint/validations/histogram_validations.go b/vendor/github.com/prometheus/client_golang/prometheus/testutil/promlint/validations/histogram_validations.go new file mode 100644 index 00000000..6564bdf3 --- /dev/null +++ b/vendor/github.com/prometheus/client_golang/prometheus/testutil/promlint/validations/histogram_validations.go @@ -0,0 +1,63 @@ +// Copyright 2020 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 validations + +import ( + "errors" + "strings" + + dto "github.com/prometheus/client_model/go" +) + +// LintHistogramSummaryReserved detects when other types of metrics use names or labels +// reserved for use by histograms and/or summaries. +func LintHistogramSummaryReserved(mf *dto.MetricFamily) []error { + // These rules do not apply to untyped metrics. + t := mf.GetType() + if t == dto.MetricType_UNTYPED { + return nil + } + + var problems []error + + isHistogram := t == dto.MetricType_HISTOGRAM + isSummary := t == dto.MetricType_SUMMARY + + n := mf.GetName() + + if !isHistogram && strings.HasSuffix(n, "_bucket") { + problems = append(problems, errors.New(`non-histogram metrics should not have "_bucket" suffix`)) + } + if !isHistogram && !isSummary && strings.HasSuffix(n, "_count") { + problems = append(problems, errors.New(`non-histogram and non-summary metrics should not have "_count" suffix`)) + } + if !isHistogram && !isSummary && strings.HasSuffix(n, "_sum") { + problems = append(problems, errors.New(`non-histogram and non-summary metrics should not have "_sum" suffix`)) + } + + for _, m := range mf.GetMetric() { + for _, l := range m.GetLabel() { + ln := l.GetName() + + if !isHistogram && ln == "le" { + problems = append(problems, errors.New(`non-histogram metrics should not have "le" label`)) + } + if !isSummary && ln == "quantile" { + problems = append(problems, errors.New(`non-summary metrics should not have "quantile" label`)) + } + } + } + + return problems +} diff --git a/vendor/github.com/prometheus/client_golang/prometheus/testutil/promlint/validations/units.go b/vendor/github.com/prometheus/client_golang/prometheus/testutil/promlint/validations/units.go new file mode 100644 index 00000000..967977d2 --- /dev/null +++ b/vendor/github.com/prometheus/client_golang/prometheus/testutil/promlint/validations/units.go @@ -0,0 +1,118 @@ +// Copyright 2020 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 validations + +import "strings" + +// Units and their possible prefixes recognized by this library. More can be +// added over time as needed. +var ( + // map a unit to the appropriate base unit. + units = map[string]string{ + // Base units. + "amperes": "amperes", + "bytes": "bytes", + "celsius": "celsius", // Also allow Celsius because it is common in typical Prometheus use cases. + "grams": "grams", + "joules": "joules", + "kelvin": "kelvin", // SI base unit, used in special cases (e.g. color temperature, scientific measurements). + "meters": "meters", // Both American and international spelling permitted. + "metres": "metres", + "seconds": "seconds", + "volts": "volts", + + // Non base units. + // Time. + "minutes": "seconds", + "hours": "seconds", + "days": "seconds", + "weeks": "seconds", + // Temperature. + "kelvins": "kelvin", + "fahrenheit": "celsius", + "rankine": "celsius", + // Length. + "inches": "meters", + "yards": "meters", + "miles": "meters", + // Bytes. + "bits": "bytes", + // Energy. + "calories": "joules", + // Mass. + "pounds": "grams", + "ounces": "grams", + } + + unitPrefixes = []string{ + "pico", + "nano", + "micro", + "milli", + "centi", + "deci", + "deca", + "hecto", + "kilo", + "kibi", + "mega", + "mibi", + "giga", + "gibi", + "tera", + "tebi", + "peta", + "pebi", + } + + // Common abbreviations that we'd like to discourage. + unitAbbreviations = []string{ + "s", + "ms", + "us", + "ns", + "sec", + "b", + "kb", + "mb", + "gb", + "tb", + "pb", + "m", + "h", + "d", + } +) + +// metricUnits attempts to detect known unit types used as part of a metric name, +// e.g. "foo_bytes_total" or "bar_baz_milligrams". +func metricUnits(m string) (unit, base string, ok bool) { + ss := strings.Split(m, "_") + + for _, s := range ss { + if base, found := units[s]; found { + return s, base, true + } + + for _, p := range unitPrefixes { + if strings.HasPrefix(s, p) { + if base, found := units[s[len(p):]]; found { + return s, base, true + } + } + } + } + + return "", "", false +} diff --git a/vendor/github.com/prometheus/client_golang/prometheus/testutil/testutil.go b/vendor/github.com/prometheus/client_golang/prometheus/testutil/testutil.go index 82d4a543..269f5643 100644 --- a/vendor/github.com/prometheus/client_golang/prometheus/testutil/testutil.go +++ b/vendor/github.com/prometheus/client_golang/prometheus/testutil/testutil.go @@ -47,6 +47,7 @@ import ( "github.com/davecgh/go-spew/spew" dto "github.com/prometheus/client_model/go" "github.com/prometheus/common/expfmt" + "google.golang.org/protobuf/proto" "github.com/prometheus/client_golang/prometheus" "github.com/prometheus/client_golang/prometheus/internal" @@ -230,6 +231,20 @@ func convertReaderToMetricFamily(reader io.Reader) ([]*dto.MetricFamily, error) return nil, fmt.Errorf("converting reader to metric families failed: %w", err) } + // The text protocol handles empty help fields inconsistently. When + // encoding, any non-nil value, include the empty string, produces a + // "# HELP" line. But when decoding, the help field is only set to a + // non-nil value if the "# HELP" line contains a non-empty value. + // + // Because metrics in a registry always have non-nil help fields, populate + // any nil help fields in the parsed metrics with the empty string so that + // when we compare text encodings, the results are consistent. + for _, metric := range notNormalized { + if metric.Help == nil { + metric.Help = proto.String("") + } + } + return internal.NormalizeMetricFamilies(notNormalized), nil } diff --git a/vendor/modules.txt b/vendor/modules.txt index 03c73c18..dbd51bf6 100644 --- a/vendor/modules.txt +++ b/vendor/modules.txt @@ -94,13 +94,14 @@ github.com/onsi/gomega/matchers/support/goraph/edge github.com/onsi/gomega/matchers/support/goraph/node github.com/onsi/gomega/matchers/support/goraph/util github.com/onsi/gomega/types -# github.com/prometheus/client_golang v1.17.0 +# github.com/prometheus/client_golang v1.18.0 ## explicit; go 1.19 github.com/prometheus/client_golang/prometheus github.com/prometheus/client_golang/prometheus/internal github.com/prometheus/client_golang/prometheus/promhttp github.com/prometheus/client_golang/prometheus/testutil github.com/prometheus/client_golang/prometheus/testutil/promlint +github.com/prometheus/client_golang/prometheus/testutil/promlint/validations # github.com/prometheus/client_model v0.5.0 ## explicit; go 1.19 github.com/prometheus/client_model/go