d1c49781ed
This ends up bumping the prometheus client as well. Signed-off-by: Daniel Canter <dcanter@microsoft.com>
86 lines
2.9 KiB
Go
86 lines
2.9 KiB
Go
/*
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Copyright 2019 The Kubernetes 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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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 legacyregistry
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import (
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"net/http"
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"github.com/prometheus/client_golang/prometheus"
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"github.com/prometheus/client_golang/prometheus/promhttp"
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"k8s.io/component-base/metrics"
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)
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var (
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defaultRegistry = metrics.NewKubeRegistry()
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// DefaultGatherer exposes the global registry gatherer
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DefaultGatherer metrics.Gatherer = defaultRegistry
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// Reset calls reset on the global registry
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Reset = defaultRegistry.Reset
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// MustRegister registers registerable metrics but uses the global registry.
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MustRegister = defaultRegistry.MustRegister
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// RawMustRegister registers prometheus collectors but uses the global registry, this
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// bypasses the metric stability framework
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//
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// Deprecated
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RawMustRegister = defaultRegistry.RawMustRegister
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// Register registers a collectable metric but uses the global registry
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Register = defaultRegistry.Register
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)
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func init() {
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//nolint:staticcheck // SA1019 - replacement function still calls prometheus.NewProcessCollector().
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RawMustRegister(prometheus.NewProcessCollector(prometheus.ProcessCollectorOpts{}))
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//nolint:staticcheck // SA1019 - replacement function still calls prometheus.NewGoCollector().
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RawMustRegister(prometheus.NewGoCollector())
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}
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// Handler returns an HTTP handler for the DefaultGatherer. It is
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// already instrumented with InstrumentHandler (using "prometheus" as handler
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// name).
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func Handler() http.Handler {
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return promhttp.InstrumentMetricHandler(prometheus.DefaultRegisterer, promhttp.HandlerFor(defaultRegistry, promhttp.HandlerOpts{}))
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}
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// HandlerWithReset returns an HTTP handler for the DefaultGatherer but invokes
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// registry reset if the http method is DELETE.
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func HandlerWithReset() http.Handler {
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return promhttp.InstrumentMetricHandler(
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prometheus.DefaultRegisterer,
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metrics.HandlerWithReset(defaultRegistry, metrics.HandlerOpts{}))
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}
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// CustomRegister registers a custom collector but uses the global registry.
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func CustomRegister(c metrics.StableCollector) error {
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err := defaultRegistry.CustomRegister(c)
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//TODO(RainbowMango): Maybe we can wrap this error by error wrapping.(Golang 1.13)
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_ = prometheus.Register(c)
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return err
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}
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// CustomMustRegister registers custom collectors but uses the global registry.
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func CustomMustRegister(cs ...metrics.StableCollector) {
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defaultRegistry.CustomMustRegister(cs...)
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for _, c := range cs {
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prometheus.MustRegister(c)
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}
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}
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