diff options
Diffstat (limited to 'vendor/github.com/prometheus/client_golang')
4 files changed, 81 insertions, 7 deletions
diff --git a/vendor/github.com/prometheus/client_golang/prometheus/histogram.go b/vendor/github.com/prometheus/client_golang/prometheus/histogram.go index 1feba62c6..b5c8bcb39 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 b3c4eca2b..c21911f29 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 c0152cdb6..8c1136cee 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 000000000..d8d9a6d7a --- /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 +} |