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main.go
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main.go
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//
// Copyright (c) 2019-2024 Red Hat, Inc.
// 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"
"flag"
"fmt"
"os"
"runtime"
"github.com/devfile/devworkspace-operator/controllers/controller/devworkspacerouting"
"github.com/devfile/devworkspace-operator/controllers/controller/devworkspacerouting/solvers"
"github.com/devfile/devworkspace-operator/pkg/cache"
"github.com/devfile/devworkspace-operator/pkg/config"
"github.com/devfile/devworkspace-operator/pkg/infrastructure"
kubesync "github.com/devfile/devworkspace-operator/pkg/library/kubernetes"
"github.com/devfile/devworkspace-operator/pkg/webhook"
"github.com/devfile/devworkspace-operator/version"
dwv1 "github.com/devfile/api/v2/pkg/apis/workspaces/v1alpha1"
dwv2 "github.com/devfile/api/v2/pkg/apis/workspaces/v1alpha2"
controllerv1alpha1 "github.com/devfile/devworkspace-operator/apis/controller/v1alpha1"
workspacecontroller "github.com/devfile/devworkspace-operator/controllers/workspace"
configv1 "github.com/openshift/api/config/v1"
oauthv1 "github.com/openshift/api/oauth/v1"
routev1 "github.com/openshift/api/route/v1"
securityv1 "github.com/openshift/api/security/v1"
templatev1 "github.com/openshift/api/template/v1"
corev1 "k8s.io/api/core/v1"
k8sruntime "k8s.io/apimachinery/pkg/runtime"
utilruntime "k8s.io/apimachinery/pkg/util/runtime"
clientgoscheme "k8s.io/client-go/kubernetes/scheme"
_ "k8s.io/client-go/plugin/pkg/client/auth/gcp"
ctrl "sigs.k8s.io/controller-runtime"
"sigs.k8s.io/controller-runtime/pkg/client"
ctrlconfig "sigs.k8s.io/controller-runtime/pkg/client/config"
"sigs.k8s.io/controller-runtime/pkg/healthz"
"sigs.k8s.io/controller-runtime/pkg/log/zap"
// +kubebuilder:scaffold:imports
)
var (
scheme = k8sruntime.NewScheme()
setupLog = ctrl.Log.WithName("setup")
)
func init() {
// Figure out if we're running on OpenShift
err := infrastructure.Initialize()
if err != nil {
setupLog.Error(err, "could not determine cluster type")
os.Exit(1)
}
utilruntime.Must(clientgoscheme.AddToScheme(scheme))
utilruntime.Must(controllerv1alpha1.AddToScheme(scheme))
utilruntime.Must(dwv1.AddToScheme(scheme))
utilruntime.Must(dwv2.AddToScheme(scheme))
if infrastructure.IsOpenShift() {
utilruntime.Must(routev1.Install(scheme))
utilruntime.Must(templatev1.Install(scheme))
utilruntime.Must(oauthv1.Install(scheme))
// Enable controller to manage SCCs in OpenShift; permissions to do this are not requested
// by default and must be added by a cluster-admin.
utilruntime.Must(securityv1.Install(scheme))
// Enable controller to read cluster-wide proxy on OpenShift
utilruntime.Must(configv1.AddToScheme(scheme))
}
// +kubebuilder:scaffold:scheme
}
func main() {
var metricsAddr string
var enableLeaderElection bool
flag.StringVar(&metricsAddr, "metrics-addr", ":8080", "The address the metric endpoint binds to.")
flag.BoolVar(&enableLeaderElection, "enable-leader-election", false,
"Enable leader election for controller manager. "+
"Enabling this will ensure there is only one active controller manager.")
flag.Parse()
ctrl.SetLogger(zap.New(zap.UseDevMode(config.GetDevModeEnabled())))
// Print versions
setupLog.Info(fmt.Sprintf("Operator Version: %s", version.Version))
setupLog.Info(fmt.Sprintf("Go Version: %s", runtime.Version()))
setupLog.Info(fmt.Sprintf("Go OS/Arch: %s/%s", runtime.GOOS, runtime.GOARCH))
setupLog.Info(fmt.Sprintf("Commit: %s", version.Commit))
setupLog.Info(fmt.Sprintf("BuildTime: %s", version.BuildTime))
if err := kubesync.InitializeDeserializer(scheme); err != nil {
setupLog.Error(err, "failed to initialized Kubernetes objects decoder")
}
cacheFunc, err := cache.GetCacheFunc()
if err != nil {
setupLog.Error(err, "failed to set up objects cache")
os.Exit(1)
}
mgr, err := ctrl.NewManager(ctrl.GetConfigOrDie(), ctrl.Options{
Scheme: scheme,
MetricsBindAddress: metricsAddr,
Port: 9443,
HealthProbeBindAddress: ":6789",
LeaderElection: enableLeaderElection,
LeaderElectionID: "8d217f93.devfile.io",
NewCache: cacheFunc,
})
if err != nil {
setupLog.Error(err, "unable to start manager")
os.Exit(1)
}
if err = setupControllerConfig(mgr); err != nil {
setupLog.Error(err, "unable to read controller configuration")
os.Exit(1)
}
nonCachingClient, err := client.New(mgr.GetConfig(), client.Options{Scheme: scheme})
if err != nil {
setupLog.Error(err, "unable to initialize non-caching client")
os.Exit(1)
}
// Index Events on involvedObject.name to allow us to get events involving a DevWorkspace's pod(s). This is used to
// check for issues that prevent the pod from starting, so that DevWorkspaces aren't just hanging indefinitely.
if err := mgr.GetFieldIndexer().IndexField(context.Background(), &corev1.Event{}, "involvedObject.name", func(obj client.Object) []string {
ev := obj.(*corev1.Event)
return []string{ev.InvolvedObject.Name}
}); err != nil {
setupLog.Error(err, "unable to update indexer to include event involvedObjects")
os.Exit(1)
}
if err = (&devworkspacerouting.DevWorkspaceRoutingReconciler{
Client: mgr.GetClient(),
Log: ctrl.Log.WithName("controllers").WithName("DevWorkspaceRouting"),
Scheme: mgr.GetScheme(),
SolverGetter: &solvers.SolverGetter{},
DebugLogging: config.ExperimentalFeaturesEnabled(),
}).SetupWithManager(mgr); err != nil {
setupLog.Error(err, "unable to create controller", "controller", "DevWorkspaceRouting")
os.Exit(1)
}
if err = (&workspacecontroller.DevWorkspaceReconciler{
Client: mgr.GetClient(),
NonCachingClient: nonCachingClient,
Log: ctrl.Log.WithName("controllers").WithName("DevWorkspace"),
Scheme: mgr.GetScheme(),
}).SetupWithManager(mgr); err != nil {
setupLog.Error(err, "unable to create controller", "controller", "DevWorkspace")
os.Exit(1)
}
// +kubebuilder:scaffold:builder
// Get a config to talk to the apiserver
cfg, err := ctrlconfig.GetConfig()
if err != nil {
setupLog.Error(err, "")
os.Exit(1)
}
setupLog.Info("setting up webhooks")
if err := webhook.SetupWebhooks(context.Background(), cfg); err != nil {
setupLog.Error(err, "failed to setup webhooks")
os.Exit(1)
}
if err := ctrl.NewWebhookManagedBy(mgr).For(&dwv1.DevWorkspace{}).Complete(); err != nil {
setupLog.Error(err, "failed creating conversion webhook for DevWorkspaces v1alpha1")
}
if err := ctrl.NewWebhookManagedBy(mgr).For(&dwv2.DevWorkspace{}).Complete(); err != nil {
setupLog.Error(err, "failed creating conversion webhook for DevWorkspaces v1alpha2")
}
// Setup health check
if err := mgr.AddHealthzCheck("healthz", healthz.Ping); err != nil {
setupLog.Error(err, "Unable to set up health check")
os.Exit(1)
}
// Setup ready check
if err := mgr.AddReadyzCheck("readyz", healthz.Ping); err != nil {
setupLog.Error(err, "Unable to set up ready check")
os.Exit(1)
}
setupLog.Info("starting manager")
if err := mgr.Start(ctrl.SetupSignalHandler()); err != nil {
setupLog.Error(err, "problem running manager")
os.Exit(1)
}
}
func setupControllerConfig(mgr ctrl.Manager) error {
nonCachedClient, err := client.New(mgr.GetConfig(), client.Options{
Scheme: mgr.GetScheme(),
})
if err != nil {
return err
}
if err := config.MigrateConfigFromConfigMap(nonCachedClient); err != nil {
return err
}
return config.SetupControllerConfig(nonCachedClient)
}