Start RedisConnectionFactory through afterPropertiesSet.

This commit restores the behaviour of RedisConnectionFactories eager initialization via afterPropertiesSet.
Additionally it is now possible to modify the lifecycle phase.

Closes #2635
Original pull request: #2636

src/main/java/org/springframework/data/redis/connection/jedis/JedisConnectionFactory.java

@@ -118,6 +118,8 @@ public class JedisConnectionFactory
 	private @Nullable ClusterTopologyProvider topologyProvider;
 	private @Nullable ClusterCommandExecutor clusterCommandExecutor;
 
+	private int phase = DEFAULT_PHASE - 10;
+
 	/**
 	 * Constructs a new {@link JedisConnectionFactory} instance with default settings (default connection pooling).
 	 */
@@ -262,7 +264,11 @@ public class JedisConnectionFactory
 
 	@Override
 	public void afterPropertiesSet() {
+
 		clientConfig = createClientConfig(getDatabase(), getRedisUsername(), getRedisPassword());
+		if(isAutoStartup()) {
+			start();
+		}
 	}
 
 	JedisClientConfig createSentinelClientConfig(SentinelConfiguration sentinelConfiguration) {
@@ -853,6 +859,21 @@ public class JedisConnectionFactory
 		return RedisConfiguration.isClusterConfiguration(configuration);
 	}
 
+	@Override
+	public int getPhase() {
+		return phase;
+	}
+
+	/**
+	 * Specify the lifecycle phase for pausing and resuming this executor.
+	 * The default is {@link #DEFAULT_PHASE} - 10.
+	 * @since 3.2
+	 * @see SmartLifecycle#getPhase()
+	 */
+	public void setPhase(int phase) {
+		this.phase = phase;
+	}
+
 	@Override
 	public RedisSentinelConnection getSentinelConnection() {
 

src/main/java/org/springframework/data/redis/connection/lettuce/LettuceConnectionFactory.java

@@ -128,6 +128,8 @@ public class LettuceConnectionFactory implements RedisConnectionFactory, Reactiv
 
 	private PipeliningFlushPolicy pipeliningFlushPolicy = PipeliningFlushPolicy.flushEachCommand();
 
+	private int phase = DEFAULT_PHASE - 10;
+
 	/**
 	 * Lifecycle state of this factory.
 	 */
@@ -400,7 +402,9 @@ public class LettuceConnectionFactory implements RedisConnectionFactory, Reactiv
 
 	@Override
 	public void afterPropertiesSet() {
-		// customization hook. initialization happens in start
+		if(isAutoStartup()) {
+			start();
+		}
 	}
 
 	@Override
@@ -1097,6 +1101,21 @@ public class LettuceConnectionFactory implements RedisConnectionFactory, Reactiv
 		return RedisConfiguration.isClusterConfiguration(configuration);
 	}
 
+	@Override
+	public int getPhase() {
+		return phase;
+	}
+
+	/**
+	 * Specify the lifecycle phase for pausing and resuming this executor.
+	 * The default is {@link #DEFAULT_PHASE} - 10.
+	 * @since 3.2
+	 * @see SmartLifecycle#getPhase()
+	 */
+	public void setPhase(int phase) {
+		this.phase = phase;
+	}
+
 	/**
 	 * @return the shared connection using {@literal byte[]} encoding for imperative API use. {@literal null} if
 	 *         {@link #getShareNativeConnection() connection sharing} is disabled or when connected to Redis Cluster.

src/test/java/org/springframework/data/redis/connection/jedis/JedisConnectionFactoryUnitTests.java

@@ -326,14 +326,13 @@ class JedisConnectionFactoryUnitTests {
 		assertThatIllegalStateException().isThrownBy(connectionFactory::getSentinelConnection);
 	}
 
-	@Test // GH-2503
-	void afterPropertiesSetDoesNotTriggerConnectionInitialization() {
+	@Test // GH-2503, GH-2635
+	void afterPropertiesTriggersConnectionInitialization() {
 
 		JedisConnectionFactory connectionFactory = new JedisConnectionFactory();
 		connectionFactory.afterPropertiesSet();
 
-		assertThat(connectionFactory.isRunning()).isFalse();
-		assertThatIllegalStateException().isThrownBy(() -> connectionFactory.getConnection());
+		assertThat(connectionFactory.isRunning()).isTrue();
 	}
 
 	private JedisConnectionFactory initSpyedConnectionFactory(RedisSentinelConfiguration sentinelConfig,

src/test/java/org/springframework/data/redis/connection/lettuce/LettuceConnectionFactoryUnitTests.java

@@ -1227,14 +1227,13 @@ class LettuceConnectionFactoryUnitTests {
 		assertThat(configuration).isEqualTo(expected);
 	}
 
-	@Test // GH-2503
-	void afterPropertiesSetDoesNotTriggerConnectionInitialization() {
+	@Test // GH-2503, GH-2635
+	void afterPropertiesSetTriggersConnectionInitialization() {
 
 		LettuceConnectionFactory connectionFactory = new LettuceConnectionFactory();
 		connectionFactory.afterPropertiesSet();
 
-		assertThat(connectionFactory.isRunning()).isFalse();
-		assertThatIllegalStateException().isThrownBy(() -> connectionFactory.getConnection());
+		assertThat(connectionFactory.isRunning()).isTrue();
 	}
 
 	static class CustomRedisConfiguration implements RedisConfiguration, WithHostAndPort {