mirror of
https://github.com/prometheus-operator/prometheus-operator.git
synced 2025-04-16 01:06:27 +00:00
84 lines
2.4 KiB
Go
84 lines
2.4 KiB
Go
// Copyright 2018 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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"flag"
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"io/ioutil"
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"log"
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"os"
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"path"
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"path/filepath"
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"github.com/coreos/prometheus-operator/pkg/prometheus"
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"k8s.io/api/core/v1"
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k8sYAML "k8s.io/apimachinery/pkg/util/yaml"
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"github.com/ghodss/yaml"
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)
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func main() {
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var ruleConfigMapName = flag.String("rule-config-map", "", "path to rule config map")
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var ruleCRDSDestination = flag.String("rule-crds-destination", "", "destination new crds should be created in")
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flag.Parse()
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if *ruleConfigMapName == "" {
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log.Print("please specify 'rule-config-map' flag")
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flag.PrintDefaults()
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os.Exit(1)
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}
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if *ruleCRDSDestination == "" {
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log.Print("please specify 'rule-crds-destination' flag")
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flag.PrintDefaults()
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os.Exit(1)
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}
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destPath, err := filepath.Abs(*ruleCRDSDestination)
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if err != nil {
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log.Fatalf("failed to get absolut path of '%v': %v", ruleCRDSDestination, err.Error())
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}
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ruleCRDSDestination = &destPath
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file, err := os.Open(*ruleConfigMapName)
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if err != nil {
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log.Fatalf("failed to read file '%v': %v", ruleConfigMapName, err.Error())
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}
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configMap := v1.ConfigMap{}
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err = k8sYAML.NewYAMLOrJSONDecoder(file, 100).Decode(&configMap)
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if err != nil {
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log.Fatalf("failed to decode manifest: %v", err.Error())
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}
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ruleFiles, err := prometheus.CMToRule(&configMap)
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if err != nil {
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log.Fatalf("failed to transform config map to rule file crds: %v", err.Error())
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}
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for _, ruleFile := range ruleFiles {
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encodedRuleFile, err := yaml.Marshal(ruleFile)
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if err != nil {
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log.Fatalf("failed to encode ruleFile '%v': %v", ruleFile.Name, err.Error())
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}
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err = ioutil.WriteFile(path.Join(*ruleCRDSDestination, ruleFile.Name), encodedRuleFile, 0644)
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if err != nil {
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log.Fatalf("failed to write yaml manifest for rule file '%v': %v", ruleFile.Name, err.Error())
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}
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}
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}
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