/**
* 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.transport;
import java.io.IOException;
import java.io.OutputStream;
import java.util.logging.Level;
import java.util.logging.Logger;
import org.apache.camel.CamelContext;
import org.apache.camel.Exchange;
import org.apache.camel.ExchangePattern;
import org.apache.camel.Processor;
import org.apache.camel.ProducerTemplate;
import org.apache.camel.component.cxf.CxfConstants;
import org.apache.camel.component.cxf.CxfSoapBinding;
import org.apache.camel.component.cxf.util.CxfHeaderHelper;
import org.apache.camel.impl.DefaultCamelContext;
import org.apache.camel.spi.HeaderFilterStrategy;
import org.apache.cxf.Bus;
import org.apache.cxf.common.logging.LogUtils;
import org.apache.cxf.configuration.Configurable;
import org.apache.cxf.configuration.Configurer;
import org.apache.cxf.io.CachedOutputStream;
import org.apache.cxf.message.Message;
import org.apache.cxf.service.model.EndpointInfo;
import org.apache.cxf.transport.AbstractConduit;
import org.apache.cxf.transport.Conduit;
import org.apache.cxf.transport.Destination;
import org.apache.cxf.transport.MessageObserver;
import org.apache.cxf.ws.addressing.EndpointReferenceType;
/**
* @version $Revision: 680645 $
*/
public class CamelConduit extends AbstractConduit implements Configurable {
protected static final String BASE_BEAN_NAME_SUFFIX = ".camel-conduit";
private static final Logger LOG = LogUtils.getL7dLogger(CamelConduit.class);
private CamelContext camelContext;
private EndpointInfo endpointInfo;
private String targetCamelEndpointUri;
private ProducerTemplate<Exchange> camelTemplate;
private Bus bus;
private HeaderFilterStrategy headerFilterStrategy;
public CamelConduit(CamelContext context, Bus b, EndpointInfo endpointInfo) {
this(context, b, endpointInfo, null);
}
public CamelConduit(CamelContext context, Bus b, EndpointInfo epInfo, EndpointReferenceType targetReference) {
this(context, b, epInfo, targetReference, null);
}
public CamelConduit(CamelContext context, Bus b, EndpointInfo epInfo, EndpointReferenceType targetReference,
HeaderFilterStrategy headerFilterStrategy) {
super(getTargetReference(epInfo, targetReference, b));
String address = epInfo.getAddress();
if (address != null) {
targetCamelEndpointUri = address.substring(CxfConstants.CAMEL_TRANSPORT_PREFIX.length());
if (targetCamelEndpointUri.startsWith("//")) {
targetCamelEndpointUri = targetCamelEndpointUri.substring(2);
}
}
camelContext = context;
endpointInfo = epInfo;
bus = b;
initConfig();
this.headerFilterStrategy = headerFilterStrategy;
}
public void setCamelContext(CamelContext context) {
camelContext = context;
}
public CamelContext getCamelContext() {
return camelContext;
}
// prepare the message for send out , not actually send out the message
public void prepare(Message message) throws IOException {
getLogger().log(Level.FINE, "CamelConduit send message");
message.setContent(OutputStream.class, new CamelOutputStream(message));
}
public void close() {
getLogger().log(Level.FINE, "CamelConduit closed ");
}
protected Logger getLogger() {
return LOG;
}
public String getBeanName() {
if (endpointInfo == null || endpointInfo.getName() == null) {
return "default" + BASE_BEAN_NAME_SUFFIX;
}
return endpointInfo.getName().toString() + BASE_BEAN_NAME_SUFFIX;
}
private void initConfig() {
// we could configure the camel context here
if (bus != null) {
Configurer configurer = bus.getExtension(Configurer.class);
if (null != configurer) {
configurer.configureBean(this);
}
}
}
public ProducerTemplate<Exchange> getCamelTemplate() {
if (camelTemplate == null) {
CamelContext ctx = camelContext != null ? camelContext : new DefaultCamelContext();
camelTemplate = ctx.createProducerTemplate();
}
return camelTemplate;
}
public void setCamelTemplate(ProducerTemplate<Exchange> template) {
camelTemplate = template;
}
private class CamelOutputStream extends CachedOutputStream {
private Message outMessage;
private boolean isOneWay;
public CamelOutputStream(Message m) {
outMessage = m;
}
protected void doFlush() throws IOException {
// do nothing here
}
protected void doClose() throws IOException {
isOneWay = outMessage.getExchange().isOneWay();
commitOutputMessage();
}
protected void onWrite() throws IOException {
// do nothing here
}
private void commitOutputMessage() {
ExchangePattern pattern;
if (isOneWay) {
pattern = ExchangePattern.InOnly;
} else {
pattern = ExchangePattern.InOut;
}
getLogger().log(Level.FINE, "send the message to endpoint" + targetCamelEndpointUri);
// We could wait for the rely asynchronously
org.apache.camel.Exchange exchange = getCamelTemplate().send(targetCamelEndpointUri, pattern, new Processor() {
public void process(org.apache.camel.Exchange ex) throws IOException {
CachedOutputStream outputStream = (CachedOutputStream)outMessage.getContent(OutputStream.class);
// Send out the request message here, copy the protocolHeader back
CxfHeaderHelper.propagateCxfToCamel(headerFilterStrategy, outMessage, ex.getIn().getHeaders());
// TODO support different encoding
ex.getIn().setBody(outputStream.getBytes());
getLogger().log(Level.FINE, "template sending request: ", ex.getIn());
}
});
exchange.setProperty(CxfConstants.CXF_EXCHANGE, outMessage.getExchange());
if (!isOneWay) {
handleResponse(exchange);
}
}
private void handleResponse(org.apache.camel.Exchange exchange) {
org.apache.cxf.message.Message inMessage = CxfSoapBinding.getCxfInMessage(headerFilterStrategy,
exchange, true);
incomingObserver.onMessage(inMessage);
}
}
/**
* Represented decoupled response endpoint.
*/
protected class DecoupledDestination implements Destination {
protected MessageObserver decoupledMessageObserver;
private EndpointReferenceType address;
DecoupledDestination(EndpointReferenceType ref, MessageObserver incomingObserver) {
address = ref;
decoupledMessageObserver = incomingObserver;
}
public EndpointReferenceType getAddress() {
return address;
}
public Conduit getBackChannel(Message inMessage, Message partialResponse, EndpointReferenceType addr) throws IOException {
// shouldn't be called on decoupled endpoint
return null;
}
public void shutdown() {
}
public synchronized void setMessageObserver(MessageObserver observer) {
decoupledMessageObserver = observer;
}
public synchronized MessageObserver getMessageObserver() {
return decoupledMessageObserver;
}
}
}