mirror of
https://github.com/prometheus-operator/prometheus-operator.git
synced 2025-04-15 16:56:24 +00:00
19f3150e8a
- Move prometheus-config-reloader to cmd/ - Refactor Makefile & contrib/kube-prometheus/Makefile - Only execute a target if its dependencies changed - Create empty target file for docker builds - Replace promu with plain static `go build`
74 lines
2 KiB
Go
74 lines
2 KiB
Go
// Copyright 2016 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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"fmt"
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"os"
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"github.com/go-kit/kit/log"
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"github.com/improbable-eng/thanos/pkg/reloader"
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"github.com/oklog/run"
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kingpin "gopkg.in/alecthomas/kingpin.v2"
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)
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func main() {
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logger := log.NewLogfmtLogger(log.NewSyncWriter(os.Stdout))
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logger = log.With(logger, "ts", log.DefaultTimestampUTC)
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logger = log.With(logger, "caller", log.DefaultCaller)
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app := kingpin.New("prometheus-config-reloader", "")
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cfgFile := app.Flag("config-file", "config file watched by the reloader").
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String()
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cfgSubstFile := app.Flag("config-envsubst-file", "output file for environment variable substituted config file").
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String()
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ruleDir := app.Flag("rule-dir", "rule directory for the reloader to refresh").String()
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reloadURL := app.Flag("reload-url", "reload URL to trigger Prometheus reload on").
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Default("http://127.0.0.1:9090/-/reload").URL()
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if _, err := app.Parse(os.Args[1:]); err != nil {
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fmt.Fprintln(os.Stderr, err)
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os.Exit(2)
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}
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if *ruleDir != "" {
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if err := os.MkdirAll(*ruleDir, 0777); err != nil {
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fmt.Fprintln(os.Stderr, err)
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os.Exit(2)
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}
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}
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var g run.Group
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{
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ctx, cancel := context.WithCancel(context.Background())
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rel := reloader.New(logger, *reloadURL, *cfgFile, *cfgSubstFile, *ruleDir)
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g.Add(func() error {
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return rel.Watch(ctx)
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}, func(error) {
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cancel()
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})
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}
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if err := g.Run(); err != nil {
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fmt.Fprintln(os.Stderr, err)
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os.Exit(1)
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}
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}
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