/**
* 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 demo.ws_rm.common;
import java.io.IOException;
import java.io.OutputStream;
import java.math.BigInteger;
import java.util.ListIterator;
import java.util.logging.Level;
import java.util.logging.Logger;
import org.apache.cxf.interceptor.Fault;
import org.apache.cxf.interceptor.InterceptorChain;
import org.apache.cxf.interceptor.MessageSenderInterceptor;
import org.apache.cxf.io.AbstractWrappedOutputStream;
import org.apache.cxf.message.Message;
import org.apache.cxf.phase.AbstractPhaseInterceptor;
import org.apache.cxf.phase.Phase;
import org.apache.cxf.phase.PhaseInterceptor;
import org.apache.cxf.ws.addressing.AddressingProperties;
import org.apache.cxf.ws.rm.RMContextUtils;
import org.apache.cxf.ws.rm.RMProperties;
/**
*
*/
public class MessageLossSimulator extends AbstractPhaseInterceptor<Message> {
private static final Logger LOG = Logger.getLogger(MessageLossSimulator.class.getName());
private int appMessageCount;
public MessageLossSimulator() {
super();
setPhase(Phase.PREPARE_SEND);
addBefore(MessageSenderInterceptor.class.getName());
}
/**
* Simulate loss of every second application message by replacing the stream normally
* provided by the transport (in the MessageSenderInterceptor)/
*/
public void handleMessage(Message message) throws Fault {
AddressingProperties maps =
RMContextUtils.retrieveMAPs(message, false, true);
RMContextUtils.ensureExposedVersion(maps);
String action = null;
if (maps != null && null != maps.getAction()) {
action = maps.getAction().getValue();
}
if (!RMContextUtils.isAplicationMessage(action)) {
return;
}
appMessageCount++;
if (0 != (appMessageCount % 2)) {
return;
}
InterceptorChain chain = message.getInterceptorChain();
ListIterator it = chain.getIterator();
while (it.hasNext()) {
PhaseInterceptor pi = (PhaseInterceptor)it.next();
if (MessageSenderInterceptor.class.getName().equals(pi.getId())) {
chain.remove(pi);
LOG.fine("Removed MessageSenderInterceptor from interceptor chain.");
break;
}
}
message.setContent(OutputStream.class, new WrappedOutputStream(message));
}
private class WrappedOutputStream extends AbstractWrappedOutputStream {
public WrappedOutputStream(Message m) {
super(m);
// TODO Auto-generated constructor stub
}
@Override
protected void doClose() throws IOException {
// TODO Auto-generated method stub
}
@Override
protected void doFlush() throws IOException {
boolean af = alreadyFlushed();
if (!af) {
if (LOG.isLoggable(Level.INFO)) {
RMProperties props = RMContextUtils.retrieveRMProperties(outMessage, true);
if (props != null && props.getSequence() != null) {
BigInteger nr = props.getSequence().getMessageNumber();
LOG.info("Losing message " + nr);
}
}
resetOut(new DummyOutputStream(), true);
}
}
@Override
protected void onWrite() throws IOException {
// TODO Auto-generated method stub
}
}
private class DummyOutputStream extends OutputStream {
@Override
public void write(int b) throws IOException {
// TODO Auto-generated method stub
}
}
}