mirror of https://github.com/k3s-io/k3s
105 lines
2.9 KiB
Go
105 lines
2.9 KiB
Go
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/*
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Copyright 2015 The Kubernetes Authors All rights reserved.
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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*/
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package metrics
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import (
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"sync"
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"time"
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"github.com/prometheus/client_golang/prometheus"
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)
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var (
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cacheHitCounter = prometheus.NewCounter(
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prometheus.CounterOpts{
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Name: "etcd_helper_cache_hit_count",
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Help: "Counter of etcd helper cache hits.",
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},
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)
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cacheMissCounter = prometheus.NewCounter(
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prometheus.CounterOpts{
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Name: "etcd_helper_cache_miss_count",
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Help: "Counter of etcd helper cache miss.",
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},
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)
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cacheEntryCounter = prometheus.NewCounter(
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prometheus.CounterOpts{
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Name: "etcd_helper_cache_entry_count",
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Help: "Counter of etcd helper cache entries. This can be different from etcd_helper_cache_miss_count " +
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"because two concurrent threads can miss the cache and generate the same entry twice.",
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},
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)
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cacheGetLatency = prometheus.NewSummary(
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prometheus.SummaryOpts{
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Name: "etcd_request_cache_get_latencies_summary",
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Help: "Latency in microseconds of getting an object from etcd cache",
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},
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)
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cacheAddLatency = prometheus.NewSummary(
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prometheus.SummaryOpts{
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Name: "etcd_request_cache_add_latencies_summary",
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Help: "Latency in microseconds of adding an object to etcd cache",
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},
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)
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etcdRequestLatenciesSummary = prometheus.NewSummaryVec(
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prometheus.SummaryOpts{
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Name: "etcd_request_latencies_summary",
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Help: "Etcd request latency summary in microseconds for each operation and object type.",
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},
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[]string{"operation", "type"},
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)
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)
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var registerMetrics sync.Once
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// Register all metrics.
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func Register() {
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// Register the metrics.
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registerMetrics.Do(func() {
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prometheus.MustRegister(cacheHitCounter)
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prometheus.MustRegister(cacheMissCounter)
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prometheus.MustRegister(cacheEntryCounter)
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prometheus.MustRegister(cacheAddLatency)
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prometheus.MustRegister(cacheGetLatency)
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prometheus.MustRegister(etcdRequestLatenciesSummary)
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})
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}
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func RecordEtcdRequestLatency(verb, resource string, startTime time.Time) {
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etcdRequestLatenciesSummary.WithLabelValues(verb, resource).Observe(float64(time.Since(startTime) / time.Microsecond))
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}
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func ObserveGetCache(startTime time.Time) {
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cacheGetLatency.Observe(float64(time.Since(startTime) / time.Microsecond))
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}
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func ObserveAddCache(startTime time.Time) {
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cacheAddLatency.Observe(float64(time.Since(startTime) / time.Microsecond))
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}
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func ObserveCacheHit() {
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cacheHitCounter.Inc()
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}
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func ObserveCacheMiss() {
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cacheMissCounter.Inc()
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}
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func ObserveNewEntry() {
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cacheEntryCounter.Inc()
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}
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