41 lines
1.3 KiB
Go
41 lines
1.3 KiB
Go
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// Copyright 2014 The Prometheus Authors
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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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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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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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package prometheus_test
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import (
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"math/rand"
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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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requestDuration = prometheus.NewHistogram(prometheus.HistogramOpts{
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Name: "example_request_duration_seconds",
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Help: "Histogram for the runtime of a simple example function.",
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Buckets: prometheus.LinearBuckets(0.01, 0.01, 10),
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})
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)
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func ExampleTimer() {
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// timer times this example function. It uses a Histogram, but a Summary
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// would also work, as both implement Observer. Check out
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// https://prometheus.io/docs/practices/histograms/ for differences.
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timer := prometheus.NewTimer(requestDuration)
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defer timer.ObserveDuration()
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// Do something here that takes time.
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time.Sleep(time.Duration(rand.NormFloat64()*10000+50000) * time.Microsecond)
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}
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