⚠️ NewTypedUnmanaged: Stop requiring a manager

pkg/config/controller.go

@@ -16,9 +16,15 @@ limitations under the License.
 
 package config
 
-import "time"
+import (
+	"time"
 
-// Controller contains configuration options for a controller.
+	"github.com/go-logr/logr"
+)
+
+// Controller contains configuration options for controllers. It only includes options
+// that makes sense for a set of controllers and is used for defaulting the options
+// of multiple controllers.
 type Controller struct {
 	// SkipNameValidation allows skipping the name validation that ensures that every controller name is unique.
 	// Unique controller names are important to get unique metrics and logs for a controller.
@@ -59,4 +65,7 @@ type Controller struct {
 	//
 	// Note: This flag is disabled by default until a future version. It's currently in beta.
 	UsePriorityQueue *bool
+
+	// Logger is the logger controllers should use.
+	Logger logr.Logger
 }

pkg/controller/controller.go

@@ -26,6 +26,7 @@ import (
 	"k8s.io/klog/v2"
 	"k8s.io/utils/ptr"
 
+	"sigs.k8s.io/controller-runtime/pkg/config"
 	"sigs.k8s.io/controller-runtime/pkg/controller/priorityqueue"
 	"sigs.k8s.io/controller-runtime/pkg/internal/controller"
 	"sigs.k8s.io/controller-runtime/pkg/manager"
@@ -80,13 +81,53 @@ type TypedOptions[request comparable] struct {
 	// Only use a custom NewQueue if you know what you are doing.
 	NewQueue func(controllerName string, rateLimiter workqueue.TypedRateLimiter[request]) workqueue.TypedRateLimitingInterface[request]
 
+	// Logger will be used to build a default LogConstructor if unset.
+	Logger logr.Logger
+
 	// LogConstructor is used to construct a logger used for this controller and passed
 	// to each reconciliation via the context field.
 	LogConstructor func(request *request) logr.Logger
+
+	// UsePriorityQueue configures the controllers queue to use the controller-runtime provided
+	// priority queue.
+	//
+	// Note: This flag is disabled by default until a future version. It's currently in beta.
+	UsePriorityQueue *bool
+}
+
+// DefaultFromConfig defaults the config from a config.Controller
+func (options *TypedOptions[request]) DefaultFromConfig(config config.Controller) {
+	if options.Logger.GetSink() == nil {
+		options.Logger = config.Logger
+	}
+
+	if options.SkipNameValidation == nil {
+		options.SkipNameValidation = config.SkipNameValidation
+	}
+
+	if options.MaxConcurrentReconciles <= 0 && config.MaxConcurrentReconciles > 0 {
+		options.MaxConcurrentReconciles = config.MaxConcurrentReconciles
+	}
+
+	if options.CacheSyncTimeout == 0 && config.CacheSyncTimeout > 0 {
+		options.CacheSyncTimeout = config.CacheSyncTimeout
+	}
+
+	if options.UsePriorityQueue == nil {
+		options.UsePriorityQueue = config.UsePriorityQueue
+	}
+
+	if options.RecoverPanic == nil {
+		options.RecoverPanic = config.RecoverPanic
+	}
+
+	if options.NeedLeaderElection == nil {
+		options.NeedLeaderElection = config.NeedLeaderElection
+	}
 }
 
-// Controller implements a Kubernetes API.  A Controller manages a work queue fed reconcile.Requests
-// from source.Sources.  Work is performed through the reconcile.Reconciler for each enqueued item.
+// Controller implements an API. A Controller manages a work queue fed reconcile.Requests
+// from source.Sources. Work is performed through the reconcile.Reconciler for each enqueued item.
 // Work typically is reads and writes Kubernetes objects to make the system state match the state specified
 // in the object Spec.
 type Controller = TypedController[reconcile.Request]
@@ -119,7 +160,8 @@ func New(name string, mgr manager.Manager, options Options) (Controller, error)
 //
 // The name must be unique as it is used to identify the controller in metrics and logs.
 func NewTyped[request comparable](name string, mgr manager.Manager, options TypedOptions[request]) (TypedController[request], error) {
-	c, err := NewTypedUnmanaged(name, mgr, options)
+	options.DefaultFromConfig(mgr.GetControllerOptions())
+	c, err := NewTypedUnmanaged(name, options)
 	if err != nil {
 		return nil, err
 	}
@@ -132,14 +174,14 @@ func NewTyped[request comparable](name string, mgr manager.Manager, options Type
 // caller is responsible for starting the returned controller.
 //
 // The name must be unique as it is used to identify the controller in metrics and logs.
-func NewUnmanaged(name string, mgr manager.Manager, options Options) (Controller, error) {
-	return NewTypedUnmanaged(name, mgr, options)
+func NewUnmanaged(name string, options Options) (Controller, error) {
+	return NewTypedUnmanaged(name, options)
 }
 
 // NewTypedUnmanaged returns a new typed controller without adding it to the manager.
 //
 // The name must be unique as it is used to identify the controller in metrics and logs.
-func NewTypedUnmanaged[request comparable](name string, mgr manager.Manager, options TypedOptions[request]) (TypedController[request], error) {
+func NewTypedUnmanaged[request comparable](name string, options TypedOptions[request]) (TypedController[request], error) {
 	if options.Reconciler == nil {
 		return nil, fmt.Errorf("must specify Reconciler")
 	}
@@ -148,18 +190,14 @@ func NewTypedUnmanaged[request comparable](name string, mgr manager.Manager, opt
 		return nil, fmt.Errorf("must specify Name for Controller")
 	}
 
-	if options.SkipNameValidation == nil {
-		options.SkipNameValidation = mgr.GetControllerOptions().SkipNameValidation
-	}
-
 	if options.SkipNameValidation == nil || !*options.SkipNameValidation {
 		if err := checkName(name); err != nil {
 			return nil, err
 		}
 	}
 
 	if options.LogConstructor == nil {
-		log := mgr.GetLogger().WithValues(
+		log := options.Logger.WithValues(
 			"controller", name,
 		)
 		options.LogConstructor = func(in *request) logr.Logger {
@@ -175,23 +213,15 @@ func NewTypedUnmanaged[request comparable](name string, mgr manager.Manager, opt
 	}
 
 	if options.MaxConcurrentReconciles <= 0 {
-		if mgr.GetControllerOptions().MaxConcurrentReconciles > 0 {
-			options.MaxConcurrentReconciles = mgr.GetControllerOptions().MaxConcurrentReconciles
-		} else {
-			options.MaxConcurrentReconciles = 1
-		}
+		options.MaxConcurrentReconciles = 1
 	}
 
 	if options.CacheSyncTimeout == 0 {
-		if mgr.GetControllerOptions().CacheSyncTimeout != 0 {
-			options.CacheSyncTimeout = mgr.GetControllerOptions().CacheSyncTimeout
-		} else {
-			options.CacheSyncTimeout = 2 * time.Minute
-		}
+		options.CacheSyncTimeout = 2 * time.Minute
 	}
 
 	if options.RateLimiter == nil {
-		if ptr.Deref(mgr.GetControllerOptions().UsePriorityQueue, false) {
+		if ptr.Deref(options.UsePriorityQueue, false) {
 			options.RateLimiter = workqueue.NewTypedItemExponentialFailureRateLimiter[request](5*time.Millisecond, 1000*time.Second)
 		} else {
 			options.RateLimiter = workqueue.DefaultTypedControllerRateLimiter[request]()
@@ -200,9 +230,9 @@ func NewTypedUnmanaged[request comparable](name string, mgr manager.Manager, opt
 
 	if options.NewQueue == nil {
 		options.NewQueue = func(controllerName string, rateLimiter workqueue.TypedRateLimiter[request]) workqueue.TypedRateLimitingInterface[request] {
-			if ptr.Deref(mgr.GetControllerOptions().UsePriorityQueue, false) {
+			if ptr.Deref(options.UsePriorityQueue, false) {
 				return priorityqueue.New(controllerName, func(o *priorityqueue.Opts[request]) {
-					o.Log = mgr.GetLogger().WithValues("controller", controllerName)
+					o.Log = options.Logger.WithValues("controller", controllerName)
 					o.RateLimiter = rateLimiter
 				})
 			}
@@ -212,14 +242,6 @@ func NewTypedUnmanaged[request comparable](name string, mgr manager.Manager, opt
 		}
 	}
 
-	if options.RecoverPanic == nil {
-		options.RecoverPanic = mgr.GetControllerOptions().RecoverPanic
-	}
-
-	if options.NeedLeaderElection == nil {
-		options.NeedLeaderElection = mgr.GetControllerOptions().NeedLeaderElection
-	}
-
 	// Create controller with dependencies set
 	return &controller.Controller[request]{
 		Do:                      options.Reconciler,

pkg/controller/example_test.go

@@ -129,7 +129,7 @@ func ExampleNewUnmanaged() {
 
 	// Configure creates a new controller but does not add it to the supplied
 	// manager.
-	c, err := controller.NewUnmanaged("pod-controller", mgr, controller.Options{
+	c, err := controller.NewUnmanaged("pod-controller", controller.Options{
 		Reconciler: reconcile.Func(func(context.Context, reconcile.Request) (reconcile.Result, error) {
 			return reconcile.Result{}, nil
 		}),

pkg/manager/manager.go

@@ -544,6 +544,10 @@ func setOptionsDefaults(options Options) Options {
 		options.Logger = log.Log
 	}
 
+	if options.Controller.Logger.GetSink() == nil {
+		options.Controller.Logger = options.Logger
+	}
+
 	if options.BaseContext == nil {
 		options.BaseContext = defaultBaseContext
 	}

pkg/manager/manager_test.go

@@ -1056,6 +1056,47 @@ var _ = Describe("manger.Manager", func() {
 				)))
 			})
 
+			It("should default controller logger from manager logger", func() {
+				var lock sync.Mutex
+				var messages []string
+				options.Logger = funcr.NewJSON(func(object string) {
+					lock.Lock()
+					messages = append(messages, object)
+					lock.Unlock()
+				}, funcr.Options{})
+				options.LeaderElection = false
+
+				m, err := New(cfg, options)
+				Expect(err).NotTo(HaveOccurred())
+				for _, cb := range callbacks {
+					cb(m)
+				}
+
+				started := make(chan struct{})
+				Expect(m.Add(RunnableFunc(func(ctx context.Context) error {
+					close(started)
+					return nil
+				}))).To(Succeed())
+
+				stopped := make(chan error)
+				ctx, cancel := context.WithCancel(context.Background())
+				go func() {
+					stopped <- m.Start(ctx)
+				}()
+
+				// Wait for runnables to start as a proxy for the manager being fully started.
+				<-started
+				cancel()
+				Expect(<-stopped).To(Succeed())
+
+				msg := "controller log message"
+				m.GetControllerOptions().Logger.Info(msg)
+
+				Expect(messages).To(ContainElement(
+					ContainSubstring(msg),
+				))
+			})
+
 			It("should return both runnables and stop errors when both error", func() {
 				m, err := New(cfg, options)
 				Expect(err).NotTo(HaveOccurred())