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https://github.com/optim-enterprises-bv/kubernetes.git
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77 lines
2.5 KiB
Go
77 lines
2.5 KiB
Go
/*
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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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"io"
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"net/http"
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"strconv"
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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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// TODO(a-robinson): Add unit tests for the handling of these metrics once
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// the upstream library supports it.
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requestCounter = prometheus.NewCounterVec(
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prometheus.CounterOpts{
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Name: "apiserver_request_count",
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Help: "Counter of apiserver requests broken out for each verb, API resource, client, and HTTP response code.",
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},
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[]string{"verb", "resource", "client", "code"},
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)
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requestLatencies = prometheus.NewHistogramVec(
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prometheus.HistogramOpts{
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Name: "apiserver_request_latencies",
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Help: "Response latency distribution in microseconds for each verb, resource and client.",
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// Use buckets ranging from 125 ms to 8 seconds.
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Buckets: prometheus.ExponentialBuckets(125000, 2.0, 7),
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},
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[]string{"verb", "resource"},
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)
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requestLatenciesSummary = prometheus.NewSummaryVec(
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prometheus.SummaryOpts{
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Name: "apiserver_request_latencies_summary",
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Help: "Response latency summary in microseconds for each verb and resource.",
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// Make the sliding window of 1h.
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MaxAge: time.Hour,
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},
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[]string{"verb", "resource"},
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)
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)
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// Register all metrics.
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func Register() {
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prometheus.MustRegister(requestCounter)
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prometheus.MustRegister(requestLatencies)
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prometheus.MustRegister(requestLatenciesSummary)
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}
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func Monitor(verb, resource *string, client string, httpCode *int, reqStart time.Time) {
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requestCounter.WithLabelValues(*verb, *resource, client, strconv.Itoa(*httpCode)).Inc()
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requestLatencies.WithLabelValues(*verb, *resource).Observe(float64((time.Since(reqStart)) / time.Microsecond))
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requestLatenciesSummary.WithLabelValues(*verb, *resource).Observe(float64((time.Since(reqStart)) / time.Microsecond))
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}
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func Reset(w http.ResponseWriter, req *http.Request) {
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requestCounter.Reset()
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requestLatencies.Reset()
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requestLatenciesSummary.Reset()
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io.WriteString(w, "metrics reset\n")
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}
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