/
main.go
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/
main.go
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/*
Copyright 2022 The Kubermatic Kubernetes Platform contributors.
Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.
*/
package main
import (
"context"
"fmt"
"os"
"github.com/go-logr/zapr"
"go.uber.org/zap"
clusterv1alpha1 "github.com/kubermatic/machine-controller/pkg/apis/cluster/v1alpha1"
appskubermaticv1 "k8c.io/api/v3/pkg/apis/apps.kubermatic/v1"
kubermaticv1 "k8c.io/api/v3/pkg/apis/kubermatic/v1"
kubermaticlog "k8c.io/kubermatic/v3/pkg/log"
"k8c.io/kubermatic/v3/pkg/resources/reconciling"
"k8c.io/kubermatic/v3/pkg/util/cli"
"k8c.io/kubermatic/v3/pkg/util/edition"
"k8c.io/kubermatic/v3/pkg/version/kubermatic"
applicationinstallationmutation "k8c.io/kubermatic/v3/pkg/webhook/application/applicationinstallation/mutation"
applicationinstallationvalidation "k8c.io/kubermatic/v3/pkg/webhook/application/applicationinstallation/validation"
"k8s.io/apimachinery/pkg/runtime"
"k8s.io/client-go/rest"
ctrlruntime "sigs.k8s.io/controller-runtime"
ctrlruntimelog "sigs.k8s.io/controller-runtime/pkg/log"
"sigs.k8s.io/controller-runtime/pkg/manager"
)
func main() {
// /////////////////////////////////////////
// setup flags
options, err := initApplicationOptions()
if err != nil {
fmt.Printf("Invalid flags: %v\n", err)
os.Exit(1)
}
// /////////////////////////////////////////
// setup logging
rawLog := kubermaticlog.New(options.log.Debug, options.log.Format)
log := rawLog.Sugar()
// set the logger used by controller-runtime
ctrlruntimelog.SetLogger(zapr.NewLogger(rawLog.WithOptions(zap.AddCallerSkip(1))))
reconciling.Configure(log)
// say hello
versions := kubermatic.NewDefaultVersions(edition.CommunityEdition)
cli.Hello(log, "User Cluster Webhook", options.log.Debug, versions)
// /////////////////////////////////////////
// get kubeconfigs
seedCfg, err := rest.InClusterConfig()
if err != nil {
log.Fatalw("Failed to get seed kubeconfig", zap.Error(err))
}
userCfg, err := ctrlruntime.GetConfig()
if err != nil {
log.Fatalw("Failed to get user cluster kubeconfig")
}
ctx := ctrlruntime.SetupSignalHandler()
seedMgr, err := manager.New(seedCfg, manager.Options{
BaseContext: func() context.Context {
return ctx
},
})
if err != nil {
log.Fatalw("Failed to create the seed cluster manager", zap.Error(err))
}
userMgr, err := manager.New(userCfg, manager.Options{
BaseContext: func() context.Context {
return ctx
},
MetricsBindAddress: "0",
})
if err != nil {
log.Fatalw("Failed to create the user cluster manager", zap.Error(err))
}
// Apply the CLI flags for configuring the webhook servers.
if err := options.seedWebhook.Configure(seedMgr.GetWebhookServer()); err != nil {
log.Fatalw("Failed to configure webhook server", zap.Error(err))
}
if err := options.userWebhook.Configure(userMgr.GetWebhookServer()); err != nil {
log.Fatalw("Failed to configure webhook server", zap.Error(err))
}
// add APIs we use
addAPIs(seedMgr.GetScheme(), log)
addAPIs(userMgr.GetScheme(), log)
// /////////////////////////////////////////
// add pprof runnable, which will start a websever if configured
if err := seedMgr.Add(&options.pprof); err != nil {
log.Fatalw("Failed to add the pprof handler (seed manager)", zap.Error(err))
}
// /////////////////////////////////////////
// setup webhooks
// Setup the mutation admission handler for ApplicationInstallation CRDs in seed manager.
applicationinstallationmutation.NewAdmissionHandler().SetupWebhookWithManager(seedMgr)
// Setup the validation admission handler for ApplicationInstallation CRDs in seed manager.
applicationinstallationvalidation.NewAdmissionHandler(seedMgr.GetClient()).SetupWebhookWithManager(seedMgr)
// /////////////////////////////////////////
// Start managers
go func() {
log.Info("Starting the user cluster manager in the background...")
if err := userMgr.Start(ctx); err != nil {
log.Fatalw("The user manager has failed", zap.Error(err))
}
}()
log.Info("Starting the seed manager...")
if err := seedMgr.Start(ctx); err != nil {
log.Fatalw("The seed manager has failed", zap.Error(err))
}
}
func addAPIs(dst *runtime.Scheme, log *zap.SugaredLogger) {
if err := kubermaticv1.AddToScheme(dst); err != nil {
log.Fatalw("failed to register scheme", zap.Stringer("api", kubermaticv1.SchemeGroupVersion), zap.Error(err))
}
if err := clusterv1alpha1.AddToScheme(dst); err != nil {
log.Fatalw("failed to register scheme", zap.Stringer("api", clusterv1alpha1.SchemeGroupVersion), zap.Error(err))
}
if err := appskubermaticv1.AddToScheme(dst); err != nil {
log.Fatalw("Failed to register scheme", zap.Stringer("api", appskubermaticv1.SchemeGroupVersion), zap.Error(err))
}
}