/
SimpleConnection.java
executable file
·153 lines (131 loc) · 4.46 KB
/
SimpleConnection.java
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/*
* Copyright 2002-2018 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.
* You may obtain a copy of the License at
*
* 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,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.springframework.amqp.rabbit.connection;
import java.io.IOException;
import java.net.InetAddress;
import org.springframework.amqp.AmqpResourceNotAvailableException;
import org.springframework.amqp.rabbit.support.RabbitExceptionTranslator;
import org.springframework.util.ObjectUtils;
import com.rabbitmq.client.BlockedListener;
import com.rabbitmq.client.Channel;
import com.rabbitmq.client.impl.NetworkConnection;
import com.rabbitmq.client.impl.recovery.AutorecoveringConnection;
/**
* Simply a Connection.
*
* @author Dave Syer
* @author Gary Russell
* @author Artem Bilan
*
* @since 1.0
*/
public class SimpleConnection implements Connection, NetworkConnection {
private final com.rabbitmq.client.Connection delegate;
private final int closeTimeout;
private volatile boolean explicitlyClosed;
public SimpleConnection(com.rabbitmq.client.Connection delegate,
int closeTimeout) {
this.delegate = delegate;
this.closeTimeout = closeTimeout;
}
@Override
public Channel createChannel(boolean transactional) {
try {
Channel channel = this.delegate.createChannel();
if (channel == null) {
throw new AmqpResourceNotAvailableException("The channelMax limit is reached. Try later.");
}
if (transactional) {
// Just created so we want to start the transaction
channel.txSelect();
}
return channel;
}
catch (IOException e) {
throw RabbitExceptionTranslator.convertRabbitAccessException(e);
}
}
@Override
public void close() {
try {
this.explicitlyClosed = true;
// let the physical close time out if necessary
this.delegate.close(this.closeTimeout);
}
catch (IOException e) {
throw RabbitExceptionTranslator.convertRabbitAccessException(e);
}
}
/**
* True if the connection is open.
* @return true if the connection is open
* @throws AutoRecoverConnectionNotCurrentlyOpenException if the connection is an
* {@link AutorecoveringConnection} and is currently closed; this is required to
* prevent the {@link CachingConnectionFactory} from discarding this connection
* and opening a new one, in which case the "old" connection would eventually be recovered
* and orphaned - also any consumers belonging to it might be recovered too
* and the broker will deliver messages to them when there is no code actually running
* to deal with those messages (when using the {@code SimpleMessageListenerContainer}).
* If we have actually closed the connection
* (e.g. via {@link CachingConnectionFactory#resetConnection()}) this will return false.
*/
@Override
public boolean isOpen() {
if (!this.explicitlyClosed && this.delegate instanceof AutorecoveringConnection && !this.delegate.isOpen()) {
throw new AutoRecoverConnectionNotCurrentlyOpenException("Auto recovery connection is not currently open");
}
return this.delegate != null && (this.delegate.isOpen());
}
@Override
public int getLocalPort() {
if (this.delegate instanceof NetworkConnection) {
return ((NetworkConnection) this.delegate).getLocalPort();
}
return 0;
}
@Override
public void addBlockedListener(BlockedListener listener) {
this.delegate.addBlockedListener(listener);
}
@Override
public boolean removeBlockedListener(BlockedListener listener) {
return this.delegate.removeBlockedListener(listener);
}
@Override
public InetAddress getLocalAddress() {
if (this.delegate instanceof NetworkConnection) {
return ((NetworkConnection) this.delegate).getLocalAddress();
}
return null;
}
@Override
public InetAddress getAddress() {
return this.delegate.getAddress();
}
@Override
public int getPort() {
return this.delegate.getPort();
}
com.rabbitmq.client.Connection getDelegate() {
return this.delegate;
}
@Override
public String toString() {
return "SimpleConnection@"
+ ObjectUtils.getIdentityHexString(this)
+ " [delegate=" + this.delegate + ", localPort= " + getLocalPort() + "]";
}
}