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/*
*
* 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.
*
*/
package org.apache.qpid.jms.failover;
import org.apache.qpid.jms.BrokerDetails;
import org.apache.qpid.jms.ConnectionURL;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
public class FailoverSingleServer implements FailoverMethod
{
private static final Logger _logger = LoggerFactory.getLogger(FailoverSingleServer.class);
/** The default number of times to rety a conection to this server */
public static final int DEFAULT_SERVER_RETRIES = 0;
/** The details of the Single Server */
private BrokerDetails _brokerDetail;
/** The number of times to retry connecting to the sever */
protected int _retries;
/** The current number of attempts made to the server */
protected int _currentRetries = 0;
public FailoverSingleServer(ConnectionURL connectionDetails)
{
if (connectionDetails.getBrokerCount() > 0)
{
setBroker(connectionDetails.getBrokerDetails(0));
}
else
{
throw new IllegalArgumentException("BrokerDetails details required for connection.");
}
}
public FailoverSingleServer(BrokerDetails brokerDetail)
{
setBroker(brokerDetail);
}
public void reset()
{
_currentRetries = 0;
}
public boolean failoverAllowed()
{
return _currentRetries < _retries;
}
public void attainedConnection()
{
reset();
}
public BrokerDetails getCurrentBrokerDetails()
{
return _brokerDetail;
}
public BrokerDetails getNextBrokerDetails()
{
if (_currentRetries == _retries)
{
return null;
}
else
{
if (_currentRetries < _retries)
{
_currentRetries++;
}
}
String delayStr = _brokerDetail.getProperty(BrokerDetails.OPTIONS_CONNECT_DELAY);
if (delayStr != null && _currentRetries > 0)
{
Long delay = Long.parseLong(delayStr);
_logger.info("Delay between connect retries:" + delay);
try
{
Thread.sleep(delay);
}
catch (InterruptedException ie)
{
return null;
}
}
else
{
_logger.info("No delay between connect retries, use tcp://host:port?connectdelay='value' to enable.");
}
return _brokerDetail;
}
public void setBroker(BrokerDetails broker)
{
if (broker == null)
{
throw new IllegalArgumentException("BrokerDetails details cannot be null");
}
_brokerDetail = broker;
String retries = broker.getProperty(BrokerDetails.OPTIONS_RETRY);
if (retries != null)
{
try
{
_retries = Integer.parseInt(retries);
}
catch (NumberFormatException nfe)
{
_retries = DEFAULT_SERVER_RETRIES;
}
}
else
{
_retries = DEFAULT_SERVER_RETRIES;
}
reset();
}
public void setRetries(int retries)
{
_retries = retries;
}
public String methodName()
{
return "Single Server";
}
public String toString()
{
return methodName()+":\n" +
"Max Retries:" + _retries +
"\nCurrent Retry:" + _currentRetries +
"\n" + _brokerDetail + "\n";
}
}
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