Polishing

spring-messaging/src/main/java/org/springframework/messaging/simp/broker/AbstractBrokerMessageHandler.java

@@ -5,7 +5,7 @@
  * 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
+ *      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,
@@ -38,7 +38,6 @@ import org.springframework.messaging.support.InterceptableChannel;
 import org.springframework.util.Assert;
 import org.springframework.util.CollectionUtils;
 
-
 /**
  * Abstract base class for a {@link MessageHandler} that broker messages to
  * registered subscribers.
@@ -51,7 +50,6 @@ public abstract class AbstractBrokerMessageHandler
 
 	protected final Log logger = LogFactory.getLog(getClass());
 
-
 	private final SubscribableChannel clientInboundChannel;
 
 	private final MessageChannel clientOutboundChannel;
@@ -74,7 +72,7 @@ public abstract class AbstractBrokerMessageHandler
 
 	private final Object lifecycleMonitor = new Object();
 
-	private ChannelInterceptor unsentDisconnectInterceptor = new UnsentDisconnectChannelInterceptor();
+	private final ChannelInterceptor unsentDisconnectInterceptor = new UnsentDisconnectChannelInterceptor();
 
 
 	/**
@@ -151,18 +149,6 @@ public abstract class AbstractBrokerMessageHandler
 		return Integer.MAX_VALUE;
 	}
 
-	/**
-	 * Check whether this message handler is currently running.
-	 * <p>Note that even when this message handler is running the
-	 * {@link #isBrokerAvailable()} flag may still independently alternate between
-	 * being on and off depending on the concrete sub-class implementation.
-	 */
-	@Override
-	public final boolean isRunning() {
-		synchronized (this.lifecycleMonitor) {
-			return this.running;
-		}
-	}
 
 	@Override
 	public void start() {
@@ -177,9 +163,7 @@ public abstract class AbstractBrokerMessageHandler
 			}
 			startInternal();
 			this.running = true;
-			if (logger.isInfoEnabled()) {
-				logger.info("Started.");
-			}
+			logger.info("Started.");
 		}
 	}
 
@@ -199,9 +183,7 @@ public abstract class AbstractBrokerMessageHandler
 				((InterceptableChannel) this.clientInboundChannel).removeInterceptor(this.unsentDisconnectInterceptor);
 			}
 			this.running = false;
-			if (logger.isDebugEnabled()) {
-				logger.info("Stopped.");
-			}
+			logger.info("Stopped.");
 		}
 	}
 
@@ -216,6 +198,19 @@ public abstract class AbstractBrokerMessageHandler
 		}
 	}
 
+	/**
+	 * Check whether this message handler is currently running.
+	 * <p>Note that even when this message handler is running the
+	 * {@link #isBrokerAvailable()} flag may still independently alternate between
+	 * being on and off depending on the concrete sub-class implementation.
+	 */
+	@Override
+	public final boolean isRunning() {
+		synchronized (this.lifecycleMonitor) {
+			return this.running;
+		}
+	}
+
 	/**
 	 * Whether the message broker is currently available and able to process messages.
 	 * <p>Note that this is in addition to the {@link #isRunning()} flag, which
@@ -245,6 +240,7 @@ public abstract class AbstractBrokerMessageHandler
 
 	protected abstract void handleMessageInternal(Message<?> message);
 
+
 	protected boolean checkDestinationPrefix(String destination) {
 		if ((destination == null) || CollectionUtils.isEmpty(this.destinationPrefixes)) {
 			return true;
@@ -294,4 +290,5 @@ public abstract class AbstractBrokerMessageHandler
 			}
 		}
 	}
+
 }

spring-messaging/src/main/java/org/springframework/messaging/support/ChannelInterceptor.java

@@ -47,8 +47,8 @@ public interface ChannelInterceptor {
 	/**
 	 * Invoked after the completion of a send regardless of any exception that
 	 * have been raised thus allowing for proper resource cleanup.
-	 * <p>Note that this will be invoked only if preSend successfully completed
-	 * and returned a Message, i.e. it did not return {@code null}.
+	 * <p>Note that this will be invoked only if {@link #preSend} successfully
+	 * completed and returned a Message, i.e. it did not return {@code null}.
 	 * @since 4.1
 	 */
 	void afterSendCompletion(Message<?> message, MessageChannel channel, boolean sent, Exception ex);
@@ -70,7 +70,7 @@ public interface ChannelInterceptor {
 	/**
 	 * Invoked after the completion of a receive regardless of any exception that
 	 * have been raised thus allowing for proper resource cleanup.
-	 * <p>Note that this will be invoked only if preReceive successfully
+	 * <p>Note that this will be invoked only if {@link #preReceive} successfully
 	 * completed and returned {@code true}.
 	 * @since 4.1
 	 */

spring-messaging/src/main/java/org/springframework/messaging/support/InterceptableChannel.java

@@ -5,7 +5,7 @@
  * 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
+ *      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,
@@ -13,6 +13,7 @@
  * See the License for the specific language governing permissions and
  * limitations under the License.
  */
+
 package org.springframework.messaging.support;
 
 import java.util.List;