mirror of
https://github.com/Telecominfraproject/wlan-cloud-kube-state-metrics.git
synced 2025-10-30 18:17:47 +00:00
86 lines
2.3 KiB
Go
86 lines
2.3 KiB
Go
/*
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Copyright 2015 The Kubernetes Authors All rights reserved.
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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 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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"strings"
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"github.com/prometheus/common/version"
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"gopkg.in/yaml.v3"
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"k8s.io/klog/v2"
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"k8s.io/kube-state-metrics/v2/pkg/customresource"
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"k8s.io/kube-state-metrics/v2/pkg/customresourcestate"
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"k8s.io/kube-state-metrics/v2/pkg/app"
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"k8s.io/kube-state-metrics/v2/pkg/options"
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)
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func main() {
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opts := options.NewOptions()
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opts.AddFlags()
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if err := opts.Parse(); err != nil {
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klog.ErrorS(err, "Parsing flag definitions error")
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klog.FlushAndExit(klog.ExitFlushTimeout, 1)
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}
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if opts.Version {
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fmt.Printf("%s\n", version.Print("kube-state-metrics"))
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os.Exit(0)
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}
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if opts.Help {
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opts.Usage()
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os.Exit(0)
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}
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var factories []customresource.RegistryFactory
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if config, set := resolveCustomResourceConfig(opts); set {
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crf, err := customresourcestate.FromConfig(config)
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if err != nil {
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klog.ErrorS(err, "Parsing from Custom Resource State Metrics file failed")
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klog.FlushAndExit(klog.ExitFlushTimeout, 1)
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}
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factories = append(factories, crf...)
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}
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ctx := context.Background()
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if err := app.RunKubeStateMetrics(ctx, opts, factories...); err != nil {
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klog.ErrorS(err, "Failed to run kube-state-metrics")
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klog.FlushAndExit(klog.ExitFlushTimeout, 1)
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}
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}
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func resolveCustomResourceConfig(opts *options.Options) (customresourcestate.ConfigDecoder, bool) {
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if s := opts.CustomResourceConfig; s != "" {
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return yaml.NewDecoder(strings.NewReader(s)), true
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}
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if file := opts.CustomResourceConfigFile; file != "" {
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f, err := os.Open(file)
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if err != nil {
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klog.ErrorS(err, "Custom Resource State Metrics file could not be opened")
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klog.FlushAndExit(klog.ExitFlushTimeout, 1)
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}
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return yaml.NewDecoder(f), true
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}
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return nil, false
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}
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