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078c404c3b
* Add prometheus collector and route * dep ensure -add github.com/prometheus/client_golang/prometheus * dep ensure -update github.com/golang/protobuf * add metrics to reserved usernames * add comment head in metrics package * fix style imports * add metrics settings * add bearer token check * mapping metrics configs * fix lint * update config cheat sheet * update conf sample, typo fix
53 lines
1.8 KiB
Go
53 lines
1.8 KiB
Go
// Copyright 2017 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
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// Observer is the interface that wraps the Observe method, which is used by
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// Histogram and Summary to add observations.
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type Observer interface {
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Observe(float64)
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}
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// The ObserverFunc type is an adapter to allow the use of ordinary
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// functions as Observers. If f is a function with the appropriate
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// signature, ObserverFunc(f) is an Observer that calls f.
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//
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// This adapter is usually used in connection with the Timer type, and there are
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// two general use cases:
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//
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// The most common one is to use a Gauge as the Observer for a Timer.
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// See the "Gauge" Timer example.
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//
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// The more advanced use case is to create a function that dynamically decides
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// which Observer to use for observing the duration. See the "Complex" Timer
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// example.
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type ObserverFunc func(float64)
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// Observe calls f(value). It implements Observer.
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func (f ObserverFunc) Observe(value float64) {
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f(value)
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}
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// ObserverVec is an interface implemented by `HistogramVec` and `SummaryVec`.
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type ObserverVec interface {
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GetMetricWith(Labels) (Observer, error)
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GetMetricWithLabelValues(lvs ...string) (Observer, error)
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With(Labels) Observer
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WithLabelValues(...string) Observer
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CurryWith(Labels) (ObserverVec, error)
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MustCurryWith(Labels) ObserverVec
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Collector
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}
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