| /* |
| * |
| * 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.slf4j.Logger; |
| import org.slf4j.LoggerFactory; |
| |
| import org.apache.qpid.client.BrokerDetails; |
| import org.apache.qpid.jms.ConnectionURL; |
| |
| 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 */ |
| private int _retries; |
| |
| /** The current number of attempts made to the server */ |
| private 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; |
| } |
| |
| protected void setCurrentRetries(int currentRetries) |
| { |
| _currentRetries = currentRetries; |
| } |
| |
| 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 int getRetries() |
| { |
| return _retries; |
| } |
| |
| public String methodName() |
| { |
| return "Single Server"; |
| } |
| |
| public String toString() |
| { |
| return methodName()+":\n" + |
| "Max Retries:" + _retries + |
| "\nCurrent Retry:" + _currentRetries + |
| "\n" + _brokerDetail + "\n"; |
| } |
| |
| } |