mirror of
https://github.com/prometheus-operator/prometheus-operator.git
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ed3aede934
* update golangci lint version --------- Signed-off-by: dongjiang1989 <dongjiang1989@126.com>
112 lines
3.2 KiB
Go
112 lines
3.2 KiB
Go
// Copyright 2022 The prometheus-operator Authors
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//
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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 main
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import (
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"context"
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"flag"
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stdlog "log"
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"net/http"
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"os"
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"os/signal"
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"syscall"
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"github.com/go-kit/log"
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"github.com/go-kit/log/level"
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"github.com/prometheus/client_golang/prometheus"
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"github.com/prometheus/client_golang/prometheus/collectors"
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"github.com/prometheus/client_golang/prometheus/collectors/version"
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"github.com/prometheus/client_golang/prometheus/promhttp"
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"golang.org/x/sync/errgroup"
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logging "github.com/prometheus-operator/prometheus-operator/internal/log"
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"github.com/prometheus-operator/prometheus-operator/pkg/admission"
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"github.com/prometheus-operator/prometheus-operator/pkg/server"
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"github.com/prometheus-operator/prometheus-operator/pkg/versionutil"
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)
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func main() {
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var (
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serverConfig server.Config = server.DefaultConfig(":8443", true)
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flagset = flag.CommandLine
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logConfig logging.Config
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)
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server.RegisterFlags(flagset, &serverConfig)
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versionutil.RegisterFlags(flagset)
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logging.RegisterFlags(flagset, &logConfig)
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_ = flagset.Parse(os.Args[1:])
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if versionutil.ShouldPrintVersion() {
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versionutil.Print(os.Stdout, "admission-webhook")
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return
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}
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logger, err := logging.NewLogger(logConfig)
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if err != nil {
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stdlog.Fatal(err)
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}
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ctx, cancel := context.WithCancel(context.Background())
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defer cancel()
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wg, ctx := errgroup.WithContext(ctx)
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mux := http.NewServeMux()
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admit := admission.New(log.With(logger, "component", "admissionwebhook"))
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admit.Register(mux)
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r := prometheus.NewRegistry()
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r.MustRegister(
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collectors.NewGoCollector(),
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collectors.NewProcessCollector(collectors.ProcessCollectorOpts{}),
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version.NewCollector("prometheus_operator_admission_webhook"),
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)
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mux.Handle("/metrics", promhttp.HandlerFor(r, promhttp.HandlerOpts{}))
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mux.HandleFunc("/healthz", func(w http.ResponseWriter, _ *http.Request) {
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w.WriteHeader(http.StatusOK)
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w.Write([]byte(`{"status":"up"}`))
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})
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srv, err := server.NewServer(logger, &serverConfig, mux)
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if err != nil {
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level.Error(logger).Log("msg", "failed to create web server", "err", err)
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os.Exit(1)
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}
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wg.Go(func() error {
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return srv.Serve(ctx)
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})
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term := make(chan os.Signal, 1)
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signal.Notify(term, os.Interrupt, syscall.SIGTERM)
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select {
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case sig := <-term:
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level.Info(logger).Log("msg", "Received signal, exiting gracefully...", "signal", sig.String())
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case <-ctx.Done():
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}
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if err := srv.Shutdown(ctx); err != nil {
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level.Warn(logger).Log("msg", "Server shutdown error", "err", err)
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}
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cancel()
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if err := wg.Wait(); err != nil {
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level.Warn(logger).Log("msg", "Unhandled error received. Exiting...", "err", err)
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os.Exit(1)
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}
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}
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