StartTime is now honored for TaskExecution

regardless if they were created before or during task execution.

resolves #861

Author: cppwfs

spring-cloud-task-core/src/main/java/org/springframework/cloud/task/listener/TaskLifecycleListener.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2016-2019 the original author or authors.
+ * Copyright 2016-2022 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.
@@ -277,8 +277,9 @@ private void doTaskStart() {
 					Assert.isNull(taskExecution.getEndTime(),
 							String.format("Invalid TaskExecution, ID %s task is already complete",
 									this.taskProperties.getExecutionid()));
+					Date startDate = (taskExecution.getStartTime() == null) ? new Date() : taskExecution.getStartTime();
 					this.taskExecution = this.taskRepository.startTaskExecution(this.taskProperties.getExecutionid(),
-							this.taskNameResolver.getTaskName(), new Date(), args,
+							this.taskNameResolver.getTaskName(), startDate, args,
 							this.taskProperties.getExternalExecutionId(), this.taskProperties.getParentExecutionId());
 				}
 				else {

spring-cloud-task-integration-tests/src/test/java/org/springframework/cloud/task/executionid/TaskStartTests.java

@@ -20,6 +20,7 @@
 import java.sql.ResultSet;
 import java.sql.SQLException;
 import java.util.ArrayList;
+import java.util.Collections;
 import java.util.Date;
 import java.util.HashMap;
 import java.util.Map;
@@ -185,6 +186,27 @@ public void testWithGeneratedTaskExecutionWithName() throws Exception {
 		assertThat(this.taskExplorer.getTaskExecution(1).getTaskName()).isEqualTo("batchEvents");
 	}
 
+	@Test
+	public void testWithGeneratedTaskExecutionWithExistingDate() throws Exception {
+		final String TASK_EXECUTION_NAME = "PRE-EXECUTION-TEST-NAME";
+		Date startDate = new Date();
+		Thread.sleep(500);
+		TaskExecution taskExecution = new TaskExecution(1, 0, TASK_EXECUTION_NAME, startDate, new Date(), "foo",
+				Collections.emptyList(), "foo", "bar", null);
+		this.taskRepository.createTaskExecution(taskExecution);
+		assertThat(this.taskExplorer.getTaskExecutionCount()).as("Only one row is expected").isEqualTo(1);
+
+		this.applicationContext = getTaskApplication(1).run(new String[0]);
+		assertThat(waitForDBToBePopulated()).isTrue();
+
+		Page<TaskExecution> taskExecutions = this.taskExplorer.findAll(PageRequest.of(0, 10));
+		assertThat(taskExecutions.getTotalElements()).as("Only one row is expected").isEqualTo(1);
+		assertThat(taskExecutions.iterator().next().getExitCode().intValue()).as("return code should be 0")
+				.isEqualTo(0);
+		assertThat(this.taskExplorer.getTaskExecution(1).getStartTime().getTime()).isEqualTo(startDate.getTime());
+
+	}
+
 	@Test
 	public void testWithNoTaskExecution() throws Exception {
 		assertThatExceptionOfType(ApplicationContextException.class).isThrownBy(() -> {