package org.apache.qpid.client;
/*
*
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you 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.
*
*/
import java.io.IOException;
import java.util.ArrayList;
import java.util.List;
import javax.jms.ExceptionListener;
import javax.jms.JMSException;
import javax.jms.XASession;
import org.apache.qpid.AMQException;
import org.apache.qpid.client.configuration.ClientProperties;
import org.apache.qpid.client.failover.FailoverException;
import org.apache.qpid.client.failover.FailoverProtectedOperation;
import org.apache.qpid.framing.ProtocolVersion;
import org.apache.qpid.jms.BrokerDetails;
import org.apache.qpid.jms.Session;
import org.apache.qpid.protocol.AMQConstant;
import org.apache.qpid.transport.Connection;
import org.apache.qpid.transport.ConnectionClose;
import org.apache.qpid.transport.ConnectionException;
import org.apache.qpid.transport.ConnectionListener;
import org.apache.qpid.transport.ProtocolVersionException;
import org.apache.qpid.transport.TransportException;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
public class AMQConnectionDelegate_0_10 implements AMQConnectionDelegate, ConnectionListener
{
/**
* This class logger.
*/
private static final Logger _logger = LoggerFactory.getLogger(AMQConnectionDelegate_0_10.class);
/**
* The AMQ Connection.
*/
private AMQConnection _conn;
/**
* The QpidConeection instance that is mapped with thie JMS connection.
*/
org.apache.qpid.transport.Connection _qpidConnection;
private ConnectionException exception = null;
//--- constructor
public AMQConnectionDelegate_0_10(AMQConnection conn)
{
_conn = conn;
_qpidConnection = new Connection();
_qpidConnection.setConnectionListener(this);
}
/**
* create a Session and start it if required.
*/
public Session createSession(boolean transacted, int acknowledgeMode, int prefetchHigh, int prefetchLow)
throws JMSException
{
_conn.checkNotClosed();
int channelId = _conn.getNextChannelID();
AMQSession session;
try
{
session = new AMQSession_0_10(_qpidConnection, _conn, channelId, transacted, acknowledgeMode, prefetchHigh,
prefetchLow);
_conn.registerSession(channelId, session);
if (_conn._started)
{
session.start();
}
}
catch (Exception e)
{
_logger.error("exception creating session:", e);
throw new JMSAMQException("cannot create session", e);
}
return session;
}
/**
* Create an XASession with default prefetch values of:
* High = MaxPrefetch
* Low = MaxPrefetch / 2
* @return XASession
* @throws JMSException
*/
public XASession createXASession() throws JMSException
{
return createXASession((int) _conn.getMaxPrefetch(), (int) _conn.getMaxPrefetch() / 2);
}
/**
* create an XA Session and start it if required.
*/
public XASession createXASession(int prefetchHigh, int prefetchLow) throws JMSException
{
_conn.checkNotClosed();
int channelId = _conn.getNextChannelID();
XASessionImpl session;
try
{
session = new XASessionImpl(_qpidConnection, _conn, channelId, prefetchHigh, prefetchLow);
_conn.registerSession(channelId, session);
if (_conn._started)
{
session.start();
}
}
catch (Exception e)
{
throw new JMSAMQException("cannot create session", e);
}
return session;
}
/**
* Make a connection with the broker
*
* @param brokerDetail The detail of the broker to connect to.
* @throws IOException
* @throws AMQException
*/
public ProtocolVersion makeBrokerConnection(BrokerDetails brokerDetail) throws IOException, AMQException
{
try
{
if (_logger.isDebugEnabled())
{
_logger.debug("connecting to host: " + brokerDetail.getHost() +
" port: " + brokerDetail.getPort() +
" vhost: " + _conn.getVirtualHost() +
" username: " + _conn.getUsername() +
" password: " + _conn.getPassword());
}
if (brokerDetail.getProperty(BrokerDetails.OPTIONS_IDLE_TIMEOUT) != null)
{
this.setIdleTimeout(Long.parseLong(brokerDetail.getProperty(BrokerDetails.OPTIONS_IDLE_TIMEOUT)));
}
else
{
// use the default value set for all connections
this.setIdleTimeout(Long.getLong(ClientProperties.IDLE_TIMEOUT_PROP_NAME,0));
}
String saslMechs = brokerDetail.getProperty("sasl_mechs")!= null?
brokerDetail.getProperty("sasl_mechs"):
System.getProperty("qpid.sasl_mechs","PLAIN");
_qpidConnection.connect(brokerDetail.getHost(), brokerDetail.getPort(), _conn.getVirtualHost(),
_conn.getUsername(), _conn.getPassword(), brokerDetail.useSSL(),saslMechs);
_conn._connected = true;
_conn._failoverPolicy.attainedConnection();
}
catch(ProtocolVersionException pe)
{
return new ProtocolVersion(pe.getMajor(), pe.getMinor());
}
catch (ConnectionException e)
{
throw new AMQException(AMQConstant.CHANNEL_ERROR, "cannot connect to broker", e);
}
return null;
}
public void failoverPrep()
{
List<AMQSession> sessions = new ArrayList<AMQSession>(_conn.getSessions().values());
for (AMQSession s : sessions)
{
s.failoverPrep();
}
}
public void resubscribeSessions() throws JMSException, AMQException, FailoverException
{
List<AMQSession> sessions = new ArrayList<AMQSession>(_conn.getSessions().values());
_logger.info(String.format("Resubscribing sessions = %s sessions.size=%s", sessions, sessions.size()));
for (AMQSession s : sessions)
{
((AMQSession_0_10) s)._qpidConnection = _qpidConnection;
s.resubscribe();
}
}
public void closeConnection(long timeout) throws JMSException, AMQException
{
try
{
_qpidConnection.close();
}
catch (TransportException e)
{
throw new AMQException(e.getMessage(), e);
}
}
public void opened(Connection conn) {}
public void exception(Connection conn, ConnectionException exc)
{
if (exception != null)
{
_logger.error("previous exception", exception);
}
exception = exc;
}
public void closed(Connection conn)
{
ConnectionException exc = exception;
exception = null;
if (exc == null)
{
return;
}
ConnectionClose close = exc.getClose();
if (close == null)
{
try
{
if (_conn.firePreFailover(false) && _conn.attemptReconnection())
{
_conn.failoverPrep();
_qpidConnection.resume();
_conn.fireFailoverComplete();
return;
}
}
catch (Exception e)
{
_logger.error("error during failover", e);
}
}
ExceptionListener listener = _conn._exceptionListener;
if (listener == null)
{
_logger.error("connection exception: " + conn, exc);
}
else
{
String code = null;
if (close != null)
{
code = close.getReplyCode().toString();
}
JMSException ex = new JMSException(exc.getMessage(), code);
ex.initCause(exc);
listener.onException(ex);
}
}
public <T, E extends Exception> T executeRetrySupport(FailoverProtectedOperation<T,E> operation) throws E
{
try
{
return operation.execute();
}
catch (FailoverException e)
{
throw new RuntimeException(e);
}
}
public void setIdleTimeout(long l)
{
_qpidConnection.setIdleTimeout(l);
}
public int getMaxChannelID()
{
return Integer.MAX_VALUE;
}
public ProtocolVersion getProtocolVersion()
{
return ProtocolVersion.v0_10;
}
}