| /** |
| * 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.camel.component.cxf.wsrm; |
| |
| import java.io.IOException; |
| import java.io.OutputStream; |
| import java.util.ListIterator; |
| |
| import org.apache.cxf.interceptor.Fault; |
| import org.apache.cxf.interceptor.Interceptor; |
| 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.rm.RMContextUtils; |
| |
| import org.slf4j.Logger; |
| import org.slf4j.LoggerFactory; |
| |
| public class MessageLossSimulator extends AbstractPhaseInterceptor<Message> { |
| |
| private static final Logger LOG = LoggerFactory.getLogger(MessageLossSimulator.class.getName()); |
| private int appMessageCount; |
| |
| public MessageLossSimulator() { |
| super(Phase.PREPARE_SEND); |
| addBefore(MessageSenderInterceptor.class.getName()); |
| } |
| |
| private static String getAction(Object map) { |
| if (map == null) { |
| return null; |
| } |
| try { |
| Object o = map.getClass().getMethod("getAction").invoke(map); |
| return (String)o.getClass().getMethod("getValue").invoke(o); |
| } catch (Throwable t) { |
| throw new Fault(t); |
| } |
| } |
| public void handleMessage(Message message) throws Fault { |
| Object maps = |
| RMContextUtils.retrieveMAPs(message, false, true); |
| // RMContextUtils.ensureExposedVersion(maps); |
| String action = getAction(maps); |
| |
| if (RMContextUtils.isRMProtocolMessage(action)) { |
| return; |
| } |
| appMessageCount++; |
| // do not discard odd-numbered messages |
| if (0 != (appMessageCount % 2)) { |
| return; |
| } |
| |
| // discard even-numbered message |
| InterceptorChain chain = message.getInterceptorChain(); |
| ListIterator<Interceptor<? extends Message>> it = chain.getIterator(); |
| while (it.hasNext()) { |
| PhaseInterceptor<?> pi = (PhaseInterceptor<?>)it.next(); |
| if (MessageSenderInterceptor.class.getName().equals(pi.getId())) { |
| chain.remove(pi); |
| LOG.debug("Removed MessageSenderInterceptor from interceptor chain."); |
| break; |
| } |
| } |
| |
| message.setContent(OutputStream.class, new WrappedOutputStream(message)); |
| |
| message.getInterceptorChain().add(new AbstractPhaseInterceptor<Message>(Phase.PREPARE_SEND_ENDING) { |
| |
| public void handleMessage(Message message) throws Fault { |
| try { |
| message.getContent(OutputStream.class).close(); |
| } catch (IOException e) { |
| throw new Fault(e); |
| } |
| } |
| |
| }); |
| } |
| |
| private class WrappedOutputStream extends AbstractWrappedOutputStream { |
| |
| private Message outMessage; |
| |
| public WrappedOutputStream(Message m) { |
| this.outMessage = m; |
| } |
| |
| @Override |
| protected void onFirstWrite() throws IOException { |
| if (LOG.isDebugEnabled()) { |
| Long nr = RMContextUtils.retrieveRMProperties(outMessage, true).getSequence().getMessageNumber(); |
| LOG.debug("Losing message {}", nr); |
| } |
| wrappedStream = new DummyOutputStream(); |
| } |
| } |
| |
| private class DummyOutputStream extends OutputStream { |
| |
| @Override |
| public void write(int b) throws IOException { |
| // TODO Auto-generated method stub |
| } |
| } |
| } |