/**
*
* Copyright 2004 Protique Ltd
*
* 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.codehaus.activemq.transport.ember;
import pyrasun.eio.EIOEvent;
import pyrasun.eio.EIOEventDescriptor;
import pyrasun.eio.EIOGlobalContext;
import pyrasun.eio.EIOPoolingStrategy;
import pyrasun.eio.services.EmberServiceController;
import pyrasun.eio.services.EmberServiceControllerImpl;
import javax.jms.JMSException;
import java.io.IOException;
/**
* An abstract base class useful for implementation inheritence
*
* @version $Revision: 1.7 $
*/
public class EmberSupport {
private EIOGlobalContext context;
private String key = "emberIo";
private int maxEm = 1;
private EmberServiceControllerImpl controller;
private EIOPoolingStrategy ioPoolingStrategy;
/**
* TODO when EmberIO can support flushing when in NIO mode
*/
//private String poolingStrategyName = "USE_RWP_POOLS";
private String poolingStrategyName = "SELECTOR_READER";
public EmberSupport() {
}
public EmberSupport(EIOGlobalContext context, EIOPoolingStrategy ioPoolingStrategy) {
this.context = context;
this.ioPoolingStrategy = ioPoolingStrategy;
}
public EIOGlobalContext getContext() throws IOException {
if (context == null) {
context = new EIOGlobalContext(maxEm, key);
}
return context;
}
public String getKey() {
return key;
}
protected EmberServiceController getController() throws IOException {
if (controller == null) {
controller = new EmberServiceControllerImpl(getContext());
}
return controller;
}
protected EIOPoolingStrategy getIoPoolingStrategy() {
if (ioPoolingStrategy == null) {
ioPoolingStrategy = getPoolingStrategyByName(poolingStrategyName);
}
return ioPoolingStrategy;
}
protected EIOPoolingStrategy getPoolingStrategyByName(String name) {
EIOPoolingStrategy strategy = EIOPoolingStrategy.getStrategyByName(name);
// lets default some pool sizes
EIOEventDescriptor evRead = strategy.getEventDescriptor(EIOEvent.READ);
evRead.setPoolSize(1);
EIOEventDescriptor evWrite = strategy.getEventDescriptor(EIOEvent.WRITE);
evWrite.setPoolSize(1);
EIOEventDescriptor evProcess = strategy.getEventDescriptor(EIOEvent.PROCESS);
evProcess.setPoolSize(1);
return strategy;
}
/**
* Factory method to create a JMSException which is linked to the base exception
*/
protected JMSException createJMSException(String message, Exception ex) {
JMSException jmsEx = new JMSException(message + ex.getMessage());
jmsEx.setLinkedException(ex);
return jmsEx;
}
}