valdar commented on code in PR #5119: URL: https://github.com/apache/camel-k/pull/5119#discussion_r1511236658
########## pkg/cmd/manager/controller.go: ########## @@ -0,0 +1,218 @@ +/* +Licensed to the Apache Software Foundation (ASF) under one or more +contributor license agreements. See the NOTICE file distributed with +this work for additional information regarding copyright ownership. +The ASF licenses this file to You 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 manager + +import ( + "context" + "strconv" + "time" + + "github.com/apache/camel-k/v2/pkg/apis" + "github.com/apache/camel-k/v2/pkg/client" + "github.com/apache/camel-k/v2/pkg/event" + "github.com/apache/camel-k/v2/pkg/util/kubernetes" + logutil "github.com/apache/camel-k/v2/pkg/util/log" + coordination "k8s.io/api/coordination/v1" + corev1 "k8s.io/api/core/v1" + "k8s.io/client-go/rest" + "k8s.io/client-go/tools/leaderelection/resourcelock" + "k8s.io/client-go/tools/record" + "sigs.k8s.io/controller-runtime/pkg/cache" + "sigs.k8s.io/controller-runtime/pkg/client/config" + "sigs.k8s.io/controller-runtime/pkg/healthz" + "sigs.k8s.io/controller-runtime/pkg/manager" + "sigs.k8s.io/controller-runtime/pkg/manager/signals" +) + +type Manager interface { + PrintVersion() + CreateBootstrapClient(cfg *rest.Config) (client.Client, string, error) + CreateEventBroadcaster(ctx context.Context, bootstrapClient client.Client) (record.EventBroadcaster, string, error) + GetControllerNamespaceAndLeaderElection(ctx context.Context, bootstrapClient client.Client, leaderElection bool) (string, bool, string, error) + GetManagerOptions(bootstrapClient client.Client) (cache.Options, string, error) + CreateManager(ctx context.Context, healthPort int32, monitoringPort int32, leaderElection bool, leaderElectionID string, cfg *rest.Config, eventBroadcaster record.EventBroadcaster, controllerNamespace string, options cache.Options) (manager.Manager, client.Client, string, error) + ControllerPreStartResourcesInit(ctx context.Context, initCtx context.Context, bootstrapClient client.Client, controllerNamespace string, ctrlClient client.Client, mgr manager.Manager) (string, error) +} + +type ControllerCmd struct { + ControllerManager Manager + Log logutil.Logger +} + +func (c ControllerCmd) Run(healthPort, monitoringPort int32, leaderElection bool, leaderElectionID string) (string, error) { + errMessage, err := setMaxprocs(c.Log) + if err != nil { + return errMessage, err + } + + c.ControllerManager.PrintVersion() + // Will only appear if DEBUG level has been enabled using the env var LOG_LEVEL + c.Log.Debug("*** DEBUG level messages will be logged ***") + + cfg, err := config.GetConfig() + if err != nil { + return "cannot get client config", err + } + bootstrapClient, errMessage, err := c.ControllerManager.CreateBootstrapClient(cfg) + if err != nil { + return errMessage, err + } + + ctx := signals.SetupSignalHandler() + + eventBroadcaster, errMessage, err := c.ControllerManager.CreateEventBroadcaster(ctx, bootstrapClient) + if eventBroadcaster != nil { + defer eventBroadcaster.Shutdown() + } + if err != nil { + return errMessage, err + } + + controllerNamespace, leaderElection, errMessage, err := c.ControllerManager.GetControllerNamespaceAndLeaderElection(ctx, bootstrapClient, leaderElection) + if err != nil { + return errMessage, err + } + if !leaderElection { + c.Log.Info("Leader election is disabled!") + } + + errMessage, err = setOperatorImage(ctx, bootstrapClient, controllerNamespace) + if err != nil { + return errMessage, err + } + + options, errMessage, err := c.ControllerManager.GetManagerOptions(bootstrapClient) + if err != nil { + return errMessage, err + } + + mgr, ctrlClient, errMessage, err := c.ControllerManager.CreateManager(ctx, healthPort, monitoringPort, leaderElection, leaderElectionID, cfg, eventBroadcaster, controllerNamespace, options) + if err != nil { + return errMessage, err + } + + initCtx, initCancel := context.WithTimeout(ctx, 1*time.Minute) + defer initCancel() + + errMessage, err = c.ControllerManager.ControllerPreStartResourcesInit(ctx, initCtx, bootstrapClient, controllerNamespace, ctrlClient, mgr) + if err != nil { + return errMessage, err + } + + c.Log.Info("Starting the manager") + return "manager exited non-zero", mgr.Start(ctx) +} + +type BaseManager struct { + Log logutil.Logger + WatchNamespace string + ControllerNamespace string + AddToManager func(ctx context.Context, manager manager.Manager, client client.Client) error +} + +func (bm BaseManager) CreateBootstrapClient(cfg *rest.Config) (client.Client, string, error) { + // Increase maximum burst that is used by client-side throttling, + // to prevent the requests made to apply the bundled Kamelets + // from being throttled. + cfg.QPS = 20 + cfg.Burst = 200 + bootstrapClient, err := client.NewClientWithConfig(false, cfg) + if err != nil { + return nil, "cannot initialize client", err + } + + return bootstrapClient, "", nil +} + +func (bm BaseManager) CreateEventBroadcaster(ctx context.Context, bootstrapClient client.Client) (record.EventBroadcaster, string, error) { + // We do not rely on the event broadcaster managed by controller runtime, + // so that we can check the operator has been granted permission to create + // Events. This is required for the operator to be installable by standard + // admin users, that are not granted create permission on Events by default. + broadcaster := record.NewBroadcaster() + + if ok, err := kubernetes.CheckPermission(ctx, bootstrapClient, corev1.GroupName, "events", bm.WatchNamespace, "", "create"); err != nil || !ok { + // Do not sink Events to the server as they'll be rejected + broadcaster = event.NewSinkLessBroadcaster(broadcaster) + if err != nil { + bm.Log.Info("Event broadcasting is disabled because of missing permissions to create Events") + } + return broadcaster, "cannot check permissions for creating Events", err + } + + return broadcaster, "", nil +} + +func (bm BaseManager) GetControllerNamespaceAndLeaderElection(ctx context.Context, bootstrapClient client.Client, leaderElection bool) (string, bool, string, error) { + controllerNamespace := bm.ControllerNamespace + if controllerNamespace == "" { + // Fallback to using the watch namespace when the operator is not in-cluster. + // It does not support local (off-cluster) operator watching resources globally, + // in which case it's not possible to determine a namespace. + controllerNamespace = bm.WatchNamespace + if controllerNamespace == "" { + leaderElection = false + bm.Log.Info("unable to determine namespace for leader election") + } + } + + if ok, err := kubernetes.CheckPermission(ctx, bootstrapClient, coordination.GroupName, "leases", controllerNamespace, "", "create"); err != nil || !ok { Review Comment: I think you addressed that opening this issue https://github.com/apache/camel-k/issues/5210 -- This is an automated message from the Apache Git Service. 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