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The RabbitMQ Java client library allows Java applications to interface with RabbitMQ.
// Copyright (c) 2007-Present Pivotal Software, Inc. All rights reserved.
//
// This software, the RabbitMQ Java client library, is triple-licensed under the
// Mozilla Public License 1.1 ("MPL"), the GNU General Public License version 2
// ("GPL") and the Apache License version 2 ("ASL"). For the MPL, please see
// LICENSE-MPL-RabbitMQ. For the GPL, please see LICENSE-GPL2. For the ASL,
// please see LICENSE-APACHE2.
//
// This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY KIND,
// either express or implied. See the LICENSE file for specific language governing
// rights and limitations of this software.
//
// If you have any questions regarding licensing, please contact us at
// [email protected].
package com.rabbitmq.client.impl;
import com.rabbitmq.client.*;
import java.io.IOException;
import java.util.concurrent.TimeoutException;
/**
* An implementation of {@link com.rabbitmq.client.ExceptionHandler} that does
* close channels on unhandled consumer exception.
*
* Used by {@link AMQConnection}.
*
* @see ExceptionHandler
* @see com.rabbitmq.client.ConnectionFactory#setExceptionHandler(ExceptionHandler)
*/
public class StrictExceptionHandler extends ForgivingExceptionHandler implements ExceptionHandler {
@Override
public void handleReturnListenerException(Channel channel, Throwable exception) {
handleChannelKiller(channel, exception, "ReturnListener.handleReturn");
}
@Override
public void handleConfirmListenerException(Channel channel, Throwable exception) {
handleChannelKiller(channel, exception, "ConfirmListener.handle{N,A}ck");
}
@Override
public void handleBlockedListenerException(Connection connection, Throwable exception) {
handleConnectionKiller(connection, exception, "BlockedListener");
}
@Override
public void handleConsumerException(Channel channel, Throwable exception,
Consumer consumer, String consumerTag,
String methodName)
{
String logMessage = "Consumer " + consumer
+ " (" + consumerTag + ")"
+ " method " + methodName
+ " for channel " + channel;
String closeMessage = "Consumer"
+ " (" + consumerTag + ")"
+ " method " + methodName
+ " for channel " + channel;
handleChannelKiller(channel, exception, logMessage, closeMessage);
}
@Override
protected void handleChannelKiller(Channel channel, Throwable exception, String what) {
handleChannelKiller(channel, exception, what, what);
}
protected void handleChannelKiller(Channel channel, Throwable exception, String logMessage, String closeMessage) {
log(logMessage + " threw an exception for channel " + channel, exception);
try {
channel.close(AMQP.REPLY_SUCCESS, "Closed due to exception from " + closeMessage);
} catch (AlreadyClosedException ace) {
// noop
} catch (TimeoutException ace) {
// noop
} catch (IOException ioe) {
log("Failure during close of channel " + channel + " after " + exception, ioe);
channel.getConnection().abort(AMQP.INTERNAL_ERROR, "Internal error closing channel for " + closeMessage);
}
}
}