Respect TaskDecorator configuration on DefaultManagedTaskExecutor

Closes gh-30442

spring-context/src/main/java/org/springframework/scheduling/concurrent/ConcurrentTaskExecutor.java

@@ -84,6 +84,9 @@ public class ConcurrentTaskExecutor implements AsyncListenableTaskExecutor, Sche
 
 	private TaskExecutorAdapter adaptedExecutor;
 
+	@Nullable
+	private TaskDecorator taskDecorator;
+
 
 	/**
 	 * Create a new ConcurrentTaskExecutor, using a single thread executor as default.
@@ -139,6 +142,7 @@ public class ConcurrentTaskExecutor implements AsyncListenableTaskExecutor, Sche
 	 * @since 4.3
 	 */
 	public final void setTaskDecorator(TaskDecorator taskDecorator) {
+		this.taskDecorator = taskDecorator;
 		this.adaptedExecutor.setTaskDecorator(taskDecorator);
 	}
 
@@ -175,11 +179,15 @@ public class ConcurrentTaskExecutor implements AsyncListenableTaskExecutor, Sche
 	}
 
 
-	private static TaskExecutorAdapter getAdaptedExecutor(Executor concurrentExecutor) {
+	private TaskExecutorAdapter getAdaptedExecutor(Executor concurrentExecutor) {
 		if (managedExecutorServiceClass != null && managedExecutorServiceClass.isInstance(concurrentExecutor)) {
 			return new ManagedTaskExecutorAdapter(concurrentExecutor);
 		}
-		return new TaskExecutorAdapter(concurrentExecutor);
+		TaskExecutorAdapter adapter = new TaskExecutorAdapter(concurrentExecutor);
+		if (this.taskDecorator != null) {
+			adapter.setTaskDecorator(this.taskDecorator);
+		}
+		return adapter;
 	}
 
 

spring-context/src/main/java/org/springframework/scheduling/concurrent/ConcurrentTaskScheduler.java

@@ -103,7 +103,7 @@ public class ConcurrentTaskScheduler extends ConcurrentTaskExecutor implements T
 	 */
 	public ConcurrentTaskScheduler() {
 		super();
-		this.scheduledExecutor = initScheduledExecutor(null);
+		initScheduledExecutor(null);
 	}
 
 	/**
@@ -118,7 +118,7 @@ public class ConcurrentTaskScheduler extends ConcurrentTaskExecutor implements T
 	 */
 	public ConcurrentTaskScheduler(ScheduledExecutorService scheduledExecutor) {
 		super(scheduledExecutor);
-		this.scheduledExecutor = initScheduledExecutor(scheduledExecutor);
+		initScheduledExecutor(scheduledExecutor);
 	}
 
 	/**
@@ -134,11 +134,11 @@ public class ConcurrentTaskScheduler extends ConcurrentTaskExecutor implements T
 	 */
 	public ConcurrentTaskScheduler(Executor concurrentExecutor, ScheduledExecutorService scheduledExecutor) {
 		super(concurrentExecutor);
-		this.scheduledExecutor = initScheduledExecutor(scheduledExecutor);
+		initScheduledExecutor(scheduledExecutor);
 	}
 
 
-	private ScheduledExecutorService initScheduledExecutor(@Nullable ScheduledExecutorService scheduledExecutor) {
+	private void initScheduledExecutor(@Nullable ScheduledExecutorService scheduledExecutor) {
 		if (scheduledExecutor != null) {
 			this.scheduledExecutor = scheduledExecutor;
 			this.enterpriseConcurrentScheduler = (managedScheduledExecutorServiceClass != null &&
@@ -148,7 +148,6 @@ public class ConcurrentTaskScheduler extends ConcurrentTaskExecutor implements T
 			this.scheduledExecutor = Executors.newSingleThreadScheduledExecutor();
 			this.enterpriseConcurrentScheduler = false;
 		}
-		return this.scheduledExecutor;
 	}
 
 	/**

spring-context/src/test/java/org/springframework/scheduling/concurrent/ConcurrentTaskExecutorTests.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2002-2022 the original author or authors.
+ * Copyright 2002-2023 the original author or authors.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -16,6 +16,7 @@
 
 package org.springframework.scheduling.concurrent;
 
+import java.util.concurrent.Executor;
 import java.util.concurrent.LinkedBlockingQueue;
 import java.util.concurrent.RunnableFuture;
 import java.util.concurrent.ThreadPoolExecutor;
@@ -25,6 +26,8 @@ import org.junit.jupiter.api.AfterEach;
 import org.junit.jupiter.api.Test;
 
 import org.springframework.core.task.NoOpRunnable;
+import org.springframework.core.task.TaskDecorator;
+import org.springframework.util.Assert;
 
 import static org.assertj.core.api.Assertions.assertThatCode;
 
@@ -38,8 +41,8 @@ class ConcurrentTaskExecutorTests extends AbstractSchedulingTaskExecutorTests {
 			new ThreadPoolExecutor(1, 1, 60, TimeUnit.SECONDS, new LinkedBlockingQueue<>());
 
 
-	@Override
 	@SuppressWarnings("deprecation")
+	@Override
 	protected org.springframework.core.task.AsyncListenableTaskExecutor buildExecutor() {
 		concurrentExecutor.setThreadFactory(new CustomizableThreadFactory(this.threadNamePrefix));
 		return new ConcurrentTaskExecutor(concurrentExecutor);
@@ -69,10 +72,40 @@ class ConcurrentTaskExecutorTests extends AbstractSchedulingTaskExecutorTests {
 	}
 
 	@Test
-	void passingNullExecutorToSetterResultsInDefaultTaskExecutorBeingUsed() {
+	void earlySetConcurrentExecutorCallRespectsConfiguredTaskDecorator() {
 		ConcurrentTaskExecutor executor = new ConcurrentTaskExecutor();
-		executor.setConcurrentExecutor(null);
+		executor.setConcurrentExecutor(new DecoratedExecutor());
+		executor.setTaskDecorator(new RunnableDecorator());
 		assertThatCode(() -> executor.execute(new NoOpRunnable())).doesNotThrowAnyException();
 	}
 
+	@Test
+	void lateSetConcurrentExecutorCallRespectsConfiguredTaskDecorator() {
+		ConcurrentTaskExecutor executor = new ConcurrentTaskExecutor();
+		executor.setTaskDecorator(new RunnableDecorator());
+		executor.setConcurrentExecutor(new DecoratedExecutor());
+		assertThatCode(() -> executor.execute(new NoOpRunnable())).doesNotThrowAnyException();
+	}
+
+
+	private static class DecoratedRunnable implements Runnable {
+		@Override
+		public void run() {
+		}
+	}
+
+	private static class RunnableDecorator implements TaskDecorator {
+		@Override
+		public Runnable decorate(Runnable runnable) {
+			return new DecoratedRunnable();
+		}
+	}
+
+	private static class DecoratedExecutor implements Executor {
+		@Override
+		public void execute(Runnable command) {
+			Assert.state(command instanceof DecoratedRunnable, "TaskDecorator not applied");
+		}
+	}
+
 }