334 lines
12 KiB
Go
334 lines
12 KiB
Go
//
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// Copyright (c) 2019-2021 Red Hat, Inc.
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// This program and the accompanying materials are made
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// available under the terms of the Eclipse Public License 2.0
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// which is available at https://www.eclipse.org/legal/epl-2.0/
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//
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// SPDX-License-Identifier: EPL-2.0
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//
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// Contributors:
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// Red Hat, Inc. - initial API and implementation
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//
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package main
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import (
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"flag"
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"os"
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"time"
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"github.com/devfile/devworkspace-operator/pkg/infrastructure"
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dwoApi "github.com/devfile/devworkspace-operator/apis/controller/v1alpha1"
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dwr "github.com/devfile/devworkspace-operator/controllers/controller/devworkspacerouting"
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"github.com/eclipse-che/che-operator/controllers/devworkspace"
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"github.com/eclipse-che/che-operator/controllers/devworkspace/solver"
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"github.com/eclipse-che/che-operator/controllers/usernamespace"
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"go.uber.org/zap/zapcore"
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// Import all Kubernetes client auth plugins (e.g. Azure, GCP, OIDC, etc.)
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// to ensure that exec-entrypoint and run can make use of them.
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"k8s.io/client-go/discovery"
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_ "k8s.io/client-go/plugin/pkg/client/auth"
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"k8s.io/apimachinery/pkg/runtime"
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ctrl "sigs.k8s.io/controller-runtime"
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"sigs.k8s.io/controller-runtime/pkg/client"
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"sigs.k8s.io/controller-runtime/pkg/healthz"
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"sigs.k8s.io/controller-runtime/pkg/log/zap"
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osruntime "runtime"
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"fmt"
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"github.com/go-logr/logr"
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configv1 "github.com/openshift/api/config/v1"
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consolev1 "github.com/openshift/api/console/v1"
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oauth "github.com/openshift/api/oauth/v1"
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orgv1 "github.com/eclipse-che/che-operator/api/v1"
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checontroller "github.com/eclipse-che/che-operator/controllers/che"
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backupcontroller "github.com/eclipse-che/che-operator/controllers/checlusterbackup"
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restorecontroller "github.com/eclipse-che/che-operator/controllers/checlusterrestore"
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"github.com/eclipse-che/che-operator/pkg/deploy"
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"github.com/eclipse-che/che-operator/pkg/signal"
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"github.com/eclipse-che/che-operator/pkg/util"
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admissionregistrationv1 "k8s.io/api/admissionregistration/v1"
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utilruntime "k8s.io/apimachinery/pkg/util/runtime"
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clientgoscheme "k8s.io/client-go/kubernetes/scheme"
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operatorsv1 "github.com/operator-framework/api/pkg/operators/v1"
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operatorsv1alpha1 "github.com/operator-framework/api/pkg/operators/v1alpha1"
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packagesv1 "github.com/operator-framework/operator-lifecycle-manager/pkg/package-server/apis/operators/v1"
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rbac "k8s.io/api/rbac/v1"
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apiextensionsv1 "k8s.io/apiextensions-apiserver/pkg/apis/apiextensions/v1"
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image_puller_api "github.com/che-incubator/kubernetes-image-puller-operator/api/v1alpha1"
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projectv1 "github.com/openshift/api/project/v1"
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routev1 "github.com/openshift/api/route/v1"
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userv1 "github.com/openshift/api/user/v1"
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corev1 "k8s.io/api/core/v1"
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orgv2alpha1 "github.com/eclipse-che/che-operator/api/v2alpha1"
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//+kubebuilder:scaffold:imports
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)
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var (
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scheme = runtime.NewScheme()
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setupLog = ctrl.Log.WithName("setup")
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defaultsPath string
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metricsAddr string
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enableLeaderElection bool
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probeAddr string
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leaseDuration = 40 * time.Second
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renewDeadline = 30 * time.Second
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)
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const (
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leasesApiResourceName = "leases"
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)
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func init() {
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flag.StringVar(&defaultsPath, "defaults-path", "", "Path to file with operator deployment defaults. This option is useful for local development.")
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flag.StringVar(&metricsAddr, "metrics-bind-address", ":60000", "The address the metric endpoint binds to.")
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flag.StringVar(&probeAddr, "health-probe-bind-address", ":6789", "The address the probe endpoint binds to.")
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flag.BoolVar(&enableLeaderElection, "leader-elect", false,
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"Enable leader election for controller manager. "+
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"Enabling this will ensure there is only one active controller manager.")
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opts := zap.Options{
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Development: true,
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Level: getLogLevel(),
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}
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opts.BindFlags(flag.CommandLine)
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flag.Parse()
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logger := zap.New(zap.UseFlagOptions(&opts))
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ctrl.SetLogger(logger)
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deploy.InitDefaults(defaultsPath)
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if _, _, err := util.DetectOpenShift(); err != nil {
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logger.Error(err, "Unable determine installation platform")
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os.Exit(1)
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}
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printVersion(logger)
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// Uncomment when orgv2alpha1 will be ready
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// utilruntime.Must(orgv2alpha1.AddToScheme(scheme))
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utilruntime.Must(orgv2alpha1.AddToScheme(scheme))
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//+kubebuilder:scaffold:scheme
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utilruntime.Must(clientgoscheme.AddToScheme(scheme))
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utilruntime.Must(admissionregistrationv1.AddToScheme(scheme))
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utilruntime.Must(apiextensionsv1.AddToScheme(scheme))
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utilruntime.Must(rbac.AddToScheme(scheme))
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// Setup Scheme for all resources
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utilruntime.Must(orgv1.AddToScheme(scheme))
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utilruntime.Must(image_puller_api.AddToScheme(scheme))
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utilruntime.Must(packagesv1.AddToScheme(scheme))
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utilruntime.Must(operatorsv1alpha1.AddToScheme(scheme))
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utilruntime.Must(operatorsv1.AddToScheme(scheme))
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if util.IsOpenShift {
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utilruntime.Must(routev1.AddToScheme(scheme))
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utilruntime.Must(oauth.AddToScheme(scheme))
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utilruntime.Must(userv1.AddToScheme(scheme))
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utilruntime.Must(configv1.AddToScheme(scheme))
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utilruntime.Must(corev1.AddToScheme(scheme))
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utilruntime.Must(consolev1.AddToScheme(scheme))
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utilruntime.Must(projectv1.AddToScheme(scheme))
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}
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}
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func getLogLevel() zapcore.Level {
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switch logLevel, _ := os.LookupEnv("LOG_LEVEL"); logLevel {
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case zapcore.DebugLevel.String():
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return zapcore.DebugLevel
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case zapcore.InfoLevel.String():
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return zapcore.InfoLevel
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case zapcore.WarnLevel.String():
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return zapcore.WarnLevel
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case zapcore.ErrorLevel.String():
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return zapcore.ErrorLevel
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case zapcore.PanicLevel.String():
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return zapcore.PanicLevel
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default:
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return zapcore.InfoLevel
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}
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}
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func printVersion(logger logr.Logger) {
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logger.Info("Binary info ", "Go version", osruntime.Version())
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logger.Info("Binary info ", "OS", osruntime.GOOS, "Arch", osruntime.GOARCH)
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logger.Info("Address ", "Metrics", metricsAddr)
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logger.Info("Address ", "Probe", probeAddr)
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infra := "Kubernetes"
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if util.IsOpenShift {
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infra = "OpenShift"
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if util.IsOpenShift4 {
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infra += " v4.x"
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} else {
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infra += " v3.x"
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}
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}
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logger.Info("Operator is running on ", "Infrastructure", infra)
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}
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// getWatchNamespace returns the Namespace the operator should be watching for changes
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func getWatchNamespace() (string, error) {
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// WatchNamespaceEnvVar is the constant for env variable WATCH_NAMESPACE
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// which specifies the Namespace to watch.
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// An empty value means the operator is running with cluster scope.
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var watchNamespaceEnvVar = "WATCH_NAMESPACE"
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ns, found := os.LookupEnv(watchNamespaceEnvVar)
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if !found {
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return "", fmt.Errorf("%s must be set", watchNamespaceEnvVar)
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}
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return ns, nil
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}
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func main() {
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watchNamespace, err := getWatchNamespace()
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if err != nil {
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setupLog.Error(err, "unable to get WatchNamespace, "+
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"the manager will watch and manage resources in all namespaces")
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}
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config := ctrl.GetConfigOrDie()
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discoveryClient, err := discovery.NewDiscoveryClientForConfig(config)
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if err != nil {
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setupLog.Error(err, "failed to create discovery client")
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os.Exit(1)
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}
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if !util.HasK8SResourceObject(discoveryClient, leasesApiResourceName) {
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setupLog.Info("Leader election was disabled", "Cause:", leasesApiResourceName+"k8s api resource is an absent.")
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enableLeaderElection = false
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}
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mgr, err := ctrl.NewManager(config, ctrl.Options{
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Scheme: scheme,
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MetricsBindAddress: metricsAddr,
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Port: 9443,
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HealthProbeBindAddress: probeAddr,
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LeaderElection: enableLeaderElection,
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LeaderElectionID: "e79b08a4.org.eclipse.che",
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LeaderElectionReleaseOnCancel: true,
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LeaseDuration: &leaseDuration,
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RenewDeadline: &renewDeadline,
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// NOTE: We CANNOT limit the manager to a single namespace, because that would limit the
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// devworkspace routing reconciler to a single namespace, which would make it totally unusable.
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// Instead, if some controller wants to limit itself to single namespace, it can do it
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// for example using an event filter, as checontroller does.
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// Namespace: watchNamespace,
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})
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if err != nil {
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setupLog.Error(err, "unable to start manager")
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os.Exit(1)
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}
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noncachedClient, err := client.New(mgr.GetConfig(), client.Options{Scheme: scheme})
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if err != nil {
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setupLog.Error(err, "unable to initialize non cached client")
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os.Exit(1)
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}
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cheReconciler := checontroller.NewReconciler(mgr.GetClient(), noncachedClient, discoveryClient, mgr.GetScheme(), watchNamespace)
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backupReconciler := backupcontroller.NewReconciler(mgr.GetClient(), noncachedClient, mgr.GetScheme(), watchNamespace)
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restoreReconciler := restorecontroller.NewReconciler(mgr.GetClient(), noncachedClient, mgr.GetScheme(), watchNamespace)
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if err = cheReconciler.SetupWithManager(mgr); err != nil {
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setupLog.Error(err, "unable to set up controller", "controller", "CheCluster")
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os.Exit(1)
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}
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if err = backupReconciler.SetupWithManager(mgr); err != nil {
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setupLog.Error(err, "unable to set up controller", "controller", "CheClusterBackup")
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os.Exit(1)
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}
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if err = restoreReconciler.SetupWithManager(mgr); err != nil {
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setupLog.Error(err, "unable to set up controller", "controller", "CheClusterRestore")
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os.Exit(1)
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}
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period := signal.GetTerminationGracePeriodSeconds(mgr.GetAPIReader(), watchNamespace)
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sigHandler := signal.SetupSignalHandler(period)
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// we install the devworkspace CheCluster reconciler even if dw is not supported so that it
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// can write meaningful status messages into the CheCluster CRs.
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dwChe := devworkspace.CheClusterReconciler{}
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if err := dwChe.SetupWithManager(mgr); err != nil {
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setupLog.Error(err, "unable to set up devWorkspace controller", "controller", "DevWorkspaceReconciler")
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os.Exit(1)
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}
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shouldDevWorkspaceBeEnabled, err := devworkspace.ShouldDevWorkspacesBeEnabled(mgr)
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if err != nil {
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setupLog.Error(err, "Failed to evaluate DevWorkspace mode state", "controller", "DevWorkspaceReconciler")
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os.Exit(1)
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}
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if shouldDevWorkspaceBeEnabled {
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if err := dwoApi.AddToScheme(mgr.GetScheme()); err != nil {
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setupLog.Error(err, "failed to register DevWorkspace API Scheme", "controller", "DevWorkspace")
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os.Exit(1)
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}
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// DWO use the infrastructure package for openshift detection. It needs to be initialized
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// but only supports OpenShift v4 or Kubernetes.
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if err := infrastructure.Initialize(); err != nil {
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setupLog.Error(err, "failed to evaluate infrastructure which is needed for DevWorkspace support")
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os.Exit(1)
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}
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routing := dwr.DevWorkspaceRoutingReconciler{
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Client: mgr.GetClient(),
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Log: ctrl.Log.WithName("controllers").WithName("DevWorkspaceRouting"),
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Scheme: mgr.GetScheme(),
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SolverGetter: solver.Getter(mgr.GetScheme()),
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}
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if err := routing.SetupWithManager(mgr); err != nil {
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setupLog.Error(err, "unable to set up controller", "controller", "DevWorkspaceRouting")
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os.Exit(1)
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}
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userNamespaceReconciler := usernamespace.NewReconciler()
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if err = userNamespaceReconciler.SetupWithManager(mgr); err != nil {
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setupLog.Error(err, "unable to set up controller", "controller", "CheUserReconciler")
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os.Exit(1)
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}
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setupLog.Info("DevWorkspace support enabled.")
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} else {
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setupLog.Info("DevWorkspace support disabled. Will initiate restart when CheCluster with devworkspaces enabled will appear")
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go devworkspace.NotifyWhenDevWorkspaceEnabled(mgr, sigHandler.Done(), func() {
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setupLog.Info("CheCluster with DevWorkspace enabled discovered. Restarting to activate DevWorkspaces mode")
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os.Exit(0)
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})
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}
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// +kubebuilder:scaffold:builder
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if err := mgr.AddHealthzCheck("healthz", healthz.Ping); err != nil {
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setupLog.Error(err, "unable to set up health check")
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os.Exit(1)
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}
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if err := mgr.AddReadyzCheck("readyz", healthz.Ping); err != nil {
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setupLog.Error(err, "unable to set up ready check")
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os.Exit(1)
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}
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// Start the Cmd
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setupLog.Info("starting manager")
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if err := mgr.Start(sigHandler); err != nil {
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setupLog.Error(err, "problem running manager")
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os.Exit(1)
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}
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}
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