/**
* 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.cxf.transport.local;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import java.io.PipedInputStream;
import java.io.PipedOutputStream;
import java.util.HashMap;
import java.util.List;
import java.util.concurrent.Executor;
import java.util.logging.Logger;
import org.apache.cxf.Bus;
import org.apache.cxf.common.logging.LogUtils;
import org.apache.cxf.io.AbstractWrappedOutputStream;
import org.apache.cxf.io.CachedOutputStream;
import org.apache.cxf.message.Exchange;
import org.apache.cxf.message.ExchangeImpl;
import org.apache.cxf.message.Message;
import org.apache.cxf.message.MessageImpl;
import org.apache.cxf.message.MessageUtils;
import org.apache.cxf.transport.AbstractConduit;
import org.apache.cxf.workqueue.SynchronousExecutor;
public class LocalConduit extends AbstractConduit {
private final class LocalConduitOutputStream extends AbstractWrappedOutputStream {
private final LocalConduit conduit;
private final Exchange exchange;
private final Message message;
private LocalConduitOutputStream(LocalConduit conduit, Exchange exchange, Message message) {
this.conduit = conduit;
this.exchange = exchange;
this.message = message;
}
public void close() throws IOException {
if (!written) {
dispatchToService(true);
}
super.close();
}
protected void onFirstWrite() throws IOException {
dispatchToService(false);
}
protected void dispatchToService(boolean empty) throws IOException {
final MessageImpl inMsg = new MessageImpl();
transportFactory.copy(message, inMsg);
if (!empty) {
final PipedInputStream stream = new PipedInputStream();
wrappedStream = new PipedOutputStream(stream);
inMsg.setContent(InputStream.class, stream);
}
inMsg.setDestination(destination);
inMsg.put(IN_CONDUIT, conduit);
final Runnable receiver = new Runnable() {
public void run() {
ExchangeImpl ex = new ExchangeImpl();
ex.put(Bus.class, destination.getBus());
ex.setInMessage(inMsg);
inMsg.setExchange(ex);
ex.put(IN_EXCHANGE, exchange);
try {
destination.getMessageObserver().onMessage(inMsg);
} catch (Throwable t) {
Message m = inMsg.getExchange().getOutFaultMessage();
if (m == null) {
m = inMsg.getExchange().getOutMessage();
}
if (m != null) {
try {
m.put(Message.RESPONSE_CODE, 500);
m.put(Message.PROTOCOL_HEADERS, new HashMap<String, List<String>>());
m.getExchange().put(Message.RESPONSE_CODE, 500);
m.getContent(OutputStream.class).close();
} catch (IOException e) {
//ignore
}
}
}
}
};
Executor ex = message.getExchange() != null
? message.getExchange().get(Executor.class) : null;
if (ex == null || SynchronousExecutor.isA(ex)) {
ex = transportFactory.getExecutor(destination.getBus());
if (ex != null) {
ex.execute(receiver);
} else {
new Thread(receiver).start();
}
} else {
ex.execute(receiver);
}
}
}
public static final String IN_CONDUIT = LocalConduit.class.getName() + ".inConduit";
public static final String RESPONSE_CONDUIT = LocalConduit.class.getName() + ".inConduit";
public static final String IN_EXCHANGE = LocalConduit.class.getName() + ".inExchange";
public static final String DIRECT_DISPATCH = LocalConduit.class.getName() + ".directDispatch";
public static final String MESSAGE_FILTER_PROPERTIES = LocalTransportFactory.MESSAGE_FILTER_PROPERTIES;
private static final Logger LOG = LogUtils.getL7dLogger(LocalConduit.class);
private LocalDestination destination;
private LocalTransportFactory transportFactory;
public LocalConduit(LocalTransportFactory transportFactory, LocalDestination destination) {
super(destination.getAddress());
this.destination = destination;
this.transportFactory = transportFactory;
}
public void prepare(final Message message) throws IOException {
if (!MessageUtils.isTrue(message.getContextualProperty(DIRECT_DISPATCH))) {
dispatchViaPipe(message);
} else {
// prepare the stream here
CachedOutputStream stream = new CachedOutputStream();
message.setContent(OutputStream.class, stream);
//save the original stream
message.put(CachedOutputStream.class, stream);
stream.holdTempFile();
}
}
@Override
public void close(Message message) throws IOException {
if (MessageUtils.isTrue(message.getContextualProperty(DIRECT_DISPATCH))
&& !Boolean.TRUE.equals(message.get(Message.INBOUND_MESSAGE))) {
dispatchDirect(message);
}
super.close(message);
}
private void dispatchDirect(Message message) throws IOException {
if (destination.getMessageObserver() == null) {
throw new IllegalStateException("Local destination does not have a MessageObserver on address "
+ destination.getAddress().getAddress().getValue());
}
MessageImpl copy = new MessageImpl();
copy.put(IN_CONDUIT, this);
copy.setDestination(destination);
transportFactory.copy(message, copy);
MessageImpl.copyContent(message, copy);
OutputStream out = message.getContent(OutputStream.class);
out.flush();
out.close();
CachedOutputStream stream = message.get(CachedOutputStream.class);
copy.setContent(InputStream.class, stream.getInputStream());
copy.removeContent(CachedOutputStream.class);
stream.releaseTempFileHold();
// Create a new incoming exchange and store the original exchange for the response
ExchangeImpl ex = new ExchangeImpl();
ex.setInMessage(copy);
ex.put(IN_EXCHANGE, message.getExchange());
ex.put(LocalConduit.DIRECT_DISPATCH, true);
ex.setDestination(destination);
destination.getMessageObserver().onMessage(copy);
}
private void dispatchViaPipe(final Message message) throws IOException {
final LocalConduit conduit = this;
final Exchange exchange = message.getExchange();
if (destination.getMessageObserver() == null) {
throw new IllegalStateException("Local destination does not have a MessageObserver on address "
+ destination.getAddress().getAddress().getValue());
}
AbstractWrappedOutputStream cout
= new LocalConduitOutputStream(conduit, exchange, message);
message.setContent(OutputStream.class, cout);
}
protected Logger getLogger() {
return LOG;
}
}