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b1a4590967
There is no release for sigs.k8s.io/controller-runtime that supports Kubernetes v1.27. The main branch has all the required modifications, so we can use that for the time being. Signed-off-by: Niels de Vos <ndevos@ibm.com>
72 lines
2.1 KiB
Go
72 lines
2.1 KiB
Go
/*
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Copyright 2018 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 metrics
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import (
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"context"
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"github.com/prometheus/client_golang/prometheus"
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clientmetrics "k8s.io/client-go/tools/metrics"
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)
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// this file contains setup logic to initialize the myriad of places
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// that client-go registers metrics. We copy the names and formats
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// from Kubernetes so that we match the core controllers.
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var (
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// client metrics.
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requestResult = prometheus.NewCounterVec(
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prometheus.CounterOpts{
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Name: "rest_client_requests_total",
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Help: "Number of HTTP requests, partitioned by status code, method, and host.",
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},
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[]string{"code", "method", "host"},
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)
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)
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func init() {
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registerClientMetrics()
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}
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// registerClientMetrics sets up the client latency metrics from client-go.
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func registerClientMetrics() {
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// register the metrics with our registry
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Registry.MustRegister(requestResult)
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// register the metrics with client-go
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clientmetrics.Register(clientmetrics.RegisterOpts{
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RequestResult: &resultAdapter{metric: requestResult},
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})
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}
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// this section contains adapters, implementations, and other sundry organic, artisanally
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// hand-crafted syntax trees required to convince client-go that it actually wants to let
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// someone use its metrics.
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// Client metrics adapters (method #1 for client-go metrics),
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// copied (more-or-less directly) from k8s.io/kubernetes setup code
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// (which isn't anywhere in an easily-importable place).
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type resultAdapter struct {
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metric *prometheus.CounterVec
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}
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func (r *resultAdapter) Increment(_ context.Context, code, method, host string) {
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r.metric.WithLabelValues(code, method, host).Inc()
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}
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