mirror of
https://github.com/kubernetes/sample-controller.git
synced 2025-01-18 23:42:52 +08:00
88 lines
2.9 KiB
Go
88 lines
2.9 KiB
Go
/*
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Copyright 2017 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 main
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import (
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"flag"
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"time"
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kubeinformers "k8s.io/client-go/informers"
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"k8s.io/client-go/kubernetes"
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"k8s.io/client-go/tools/clientcmd"
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"k8s.io/klog/v2"
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"k8s.io/sample-controller/pkg/signals"
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// Uncomment the following line to load the gcp plugin (only required to authenticate against GKE clusters).
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// _ "k8s.io/client-go/plugin/pkg/client/auth/gcp"
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clientset "k8s.io/sample-controller/pkg/generated/clientset/versioned"
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informers "k8s.io/sample-controller/pkg/generated/informers/externalversions"
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)
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var (
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masterURL string
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kubeconfig string
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)
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func main() {
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klog.InitFlags(nil)
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flag.Parse()
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// set up signals so we handle the shutdown signal gracefully
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ctx := signals.SetupSignalHandler()
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logger := klog.FromContext(ctx)
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cfg, err := clientcmd.BuildConfigFromFlags(masterURL, kubeconfig)
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if err != nil {
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logger.Error(err, "Error building kubeconfig")
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klog.FlushAndExit(klog.ExitFlushTimeout, 1)
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}
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kubeClient, err := kubernetes.NewForConfig(cfg)
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if err != nil {
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logger.Error(err, "Error building kubernetes clientset")
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klog.FlushAndExit(klog.ExitFlushTimeout, 1)
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}
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exampleClient, err := clientset.NewForConfig(cfg)
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if err != nil {
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logger.Error(err, "Error building kubernetes clientset")
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klog.FlushAndExit(klog.ExitFlushTimeout, 1)
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}
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kubeInformerFactory := kubeinformers.NewSharedInformerFactory(kubeClient, time.Second*30)
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exampleInformerFactory := informers.NewSharedInformerFactory(exampleClient, time.Second*30)
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controller := NewController(ctx, kubeClient, exampleClient,
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kubeInformerFactory.Apps().V1().Deployments(),
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exampleInformerFactory.Samplecontroller().V1alpha1().Foos())
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// notice that there is no need to run Start methods in a separate goroutine. (i.e. go kubeInformerFactory.Start(ctx.done())
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// Start method is non-blocking and runs all registered informers in a dedicated goroutine.
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kubeInformerFactory.Start(ctx.Done())
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exampleInformerFactory.Start(ctx.Done())
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if err = controller.Run(ctx, 2); err != nil {
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logger.Error(err, "Error running controller")
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klog.FlushAndExit(klog.ExitFlushTimeout, 1)
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}
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}
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func init() {
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flag.StringVar(&kubeconfig, "kubeconfig", "", "Path to a kubeconfig. Only required if out-of-cluster.")
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flag.StringVar(&masterURL, "master", "", "The address of the Kubernetes API server. Overrides any value in kubeconfig. Only required if out-of-cluster.")
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}
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