/**
* 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;
import java.io.InputStream;
import java.lang.reflect.Method;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import java.util.Set;
import javax.xml.namespace.QName;
import org.w3c.dom.Element;
import org.apache.camel.Exchange;
import org.apache.camel.ExchangePattern;
import org.apache.camel.spi.HeaderFilterStrategy;
import org.apache.camel.spi.HeaderFilterStrategyAware;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.apache.cxf.binding.soap.SoapHeader;
import org.apache.cxf.endpoint.Client;
import org.apache.cxf.endpoint.Endpoint;
import org.apache.cxf.frontend.MethodDispatcher;
import org.apache.cxf.headers.Header;
import org.apache.cxf.helpers.CastUtils;
import org.apache.cxf.jaxws.context.WrappedMessageContext;
import org.apache.cxf.message.Message;
import org.apache.cxf.message.MessageContentsList;
import org.apache.cxf.service.Service;
import org.apache.cxf.service.model.BindingMessageInfo;
import org.apache.cxf.service.model.BindingOperationInfo;
/**
* The Default CXF binding implementation.
*
* @version $Revision: 803172 $
*/
public class DefaultCxfBinding implements CxfBinding, HeaderFilterStrategyAware {
private static final Log LOG = LogFactory.getLog(DefaultCxfBinding.class);
private HeaderFilterStrategy headerFilterStrategy;
// CxfBinding Methods
// -------------------------------------------------------------------------
/**
* <p>
* This method is called by {@link CxfProducer#process(Exchange)}. It populates
* the CXF exchange and invocation context (i.e. request/response) contexts, it
* but does not create and populate a CXF message as a ClientImpl's invoke method
* will create a new CXF Message. That method will put all properties from the
* CXF exchange and request context to the CXF message.
* </p>
*/
public void populateCxfRequestFromExchange(
org.apache.cxf.message.Exchange cxfExchange, Exchange camelExchange,
Map<String, Object> requestContext) {
// propagate request context
Map<String, Object> camelHeaders = camelExchange.getIn().getHeaders();
extractInvocationContextFromCamel(camelExchange, camelHeaders,
requestContext, Client.REQUEST_CONTEXT);
// propagate headers
propagateHeadersFromCamelToCxf(camelExchange, camelHeaders, cxfExchange,
requestContext);
}
/**
* This method is called by {@link CxfProducer#process(Exchange)}. It propagates
* information from CXF Exchange to Camel Exchange. The CXF Exchange contains a
* request from a CXF server.
*/
public void populateExchangeFromCxfResponse(Exchange camelExchange,
org.apache.cxf.message.Exchange cxfExchange,
Map<String, Object> responseContext) {
Message cxfMessage = cxfExchange.getInMessage();
if (LOG.isTraceEnabled()) {
LOG.trace("Populate exchange from CXF response message: " + cxfMessage);
}
// propagate body
camelExchange.getOut().setBody(DefaultCxfBinding.getContentFromCxf(cxfMessage,
camelExchange.getProperty(CxfConstants.DATA_FORMAT_PROPERTY, DataFormat.class)));
// propagate response context
if (responseContext != null && responseContext.size() > 0) {
camelExchange.getOut().setHeader(Client.RESPONSE_CONTEXT, responseContext);
if (LOG.isTraceEnabled()) {
LOG.trace("Set header = " + Client.RESPONSE_CONTEXT + " value = "
+ responseContext);
}
}
// propagate protocol headers
propagateHeadersFromCxfToCamel(cxfMessage, camelExchange.getOut(), camelExchange);
}
/**
* This method is called by {@link CxfConsumer}.
*/
public void populateExchangeFromCxfRequest(org.apache.cxf.message.Exchange cxfExchange,
Exchange camelExchange) {
Method method = null;
QName operationName = null;
ExchangePattern mep = ExchangePattern.InOut;
// extract binding operation information
BindingOperationInfo boi = camelExchange.getProperty(BindingOperationInfo.class.getName(),
BindingOperationInfo.class);
if (boi != null) {
Service service = (Service)cxfExchange.get(Service.class);
if (service != null) {
MethodDispatcher md = (MethodDispatcher)service
.get(MethodDispatcher.class.getName());
if (md != null) {
method = md.getMethod(boi);
}
}
if (boi.getOperationInfo().isOneWay()) {
mep = ExchangePattern.InOnly;
}
operationName = boi.getName();
}
// set operation name in header
if (operationName != null) {
camelExchange.getIn().setHeader(CxfConstants.OPERATION_NAMESPACE,
boi.getName().getNamespaceURI());
camelExchange.getIn().setHeader(CxfConstants.OPERATION_NAME,
boi.getName().getLocalPart());
if (LOG.isTraceEnabled()) {
LOG.trace("Set IN header: " + CxfConstants.OPERATION_NAMESPACE + "="
+ boi.getName().getNamespaceURI());
LOG.trace("Set IN header: " + CxfConstants.OPERATION_NAME + "="
+ boi.getName().getLocalPart());
}
} else if (method != null) {
camelExchange.getIn().setHeader(CxfConstants.OPERATION_NAME, method.getName());
if (LOG.isTraceEnabled()) {
LOG.trace("Set IN header: " + CxfConstants.OPERATION_NAME + "="
+ method.getName());
}
}
// set message exchange pattern
camelExchange.setPattern(mep);
if (LOG.isTraceEnabled()) {
LOG.trace("Set exchange MEP: " + mep);
}
// propagate headers
Message cxfMessage = cxfExchange.getInMessage();
propagateHeadersFromCxfToCamel(cxfMessage, camelExchange.getIn(), camelExchange);
// Propagating properties from CXF Exchange to Camel Exchange has an
// side effect of copying reply side stuff when the producer is retried.
// So, we do not want to do this.
//camelExchange.getProperties().putAll(cxfExchange);
// propagate request context
Object value = cxfMessage.get(Client.REQUEST_CONTEXT);
if (value != null && !headerFilterStrategy.applyFilterToExternalHeaders(
Client.REQUEST_CONTEXT, value, camelExchange)) {
camelExchange.getIn().setHeader(Client.REQUEST_CONTEXT, value);
if (LOG.isTraceEnabled()) {
LOG.trace("Populate context from CXF message " + Client.REQUEST_CONTEXT
+ " value=" + value);
}
}
// set body
Object body = DefaultCxfBinding.getContentFromCxf(cxfMessage,
camelExchange.getProperty(CxfConstants.DATA_FORMAT_PROPERTY, DataFormat.class));
if (body != null) {
camelExchange.getIn().setBody(body);
}
}
/**
* This method is called by {@link CxfConsumer} to populate a CXF response exchange
* from a Camel exchange.
*/
public void populateCxfResponseFromExchange(Exchange camelExchange,
org.apache.cxf.message.Exchange cxfExchange) {
// create response context
Map<String, Object> responseContext = new HashMap<String, Object>();
// propagate response context
Map<String, Object> camelHeaders = camelExchange.getOut().getHeaders();
extractInvocationContextFromCamel(camelExchange, camelHeaders,
responseContext, Client.RESPONSE_CONTEXT);
propagateHeadersFromCamelToCxf(camelExchange, camelHeaders, cxfExchange,
responseContext);
// create out message
Endpoint ep = cxfExchange.get(Endpoint.class);
Message outMessage = ep.getBinding().createMessage();
cxfExchange.setOutMessage(outMessage);
DataFormat dataFormat = camelExchange.getProperty(CxfConstants.DATA_FORMAT_PROPERTY,
DataFormat.class);
// propagate contexts
if (dataFormat != DataFormat.POJO) {
// copying response context to out message seems to cause problem in POJO mode
outMessage.putAll(responseContext);
}
outMessage.put(Client.RESPONSE_CONTEXT, responseContext);
if (LOG.isTraceEnabled()) {
LOG.trace("Set out response context = " + responseContext);
}
// set body
Object outBody = DefaultCxfBinding.getBodyFromCamel(camelExchange.getOut(), dataFormat);
if (outBody != null) {
if (dataFormat == DataFormat.PAYLOAD) {
CxfPayload<?> payload = (CxfPayload<?>)outBody;
outMessage.put(List.class, payload.getBody());
outMessage.put(Header.HEADER_LIST, payload.getHeaders());
} else {
if (responseContext.get(Header.HEADER_LIST) != null) {
outMessage.put(Header.HEADER_LIST, responseContext.get(Header.HEADER_LIST));
}
MessageContentsList resList = null;
if (outBody instanceof MessageContentsList) {
resList = (MessageContentsList)outBody;
} else if (outBody instanceof List) {
resList = new MessageContentsList((List<?>)outBody);
} else if (outBody.getClass().isArray()) {
resList = new MessageContentsList((Object[])outBody);
} else {
resList = new MessageContentsList(outBody);
}
if (resList != null) {
outMessage.setContent(List.class, resList);
if (LOG.isTraceEnabled()) {
LOG.trace("Set Out CXF message content = " + resList);
}
}
}
}
BindingOperationInfo boi = cxfExchange.get(BindingOperationInfo.class);
if (boi != null) {
cxfExchange.put(BindingMessageInfo.class, boi.getOutput());
}
}
// HeaderFilterStrategyAware Methods
// -------------------------------------------------------------------------
public HeaderFilterStrategy getHeaderFilterStrategy() {
return headerFilterStrategy;
}
public void setHeaderFilterStrategy(HeaderFilterStrategy strategy) {
this.headerFilterStrategy = strategy;
}
// Non public methods
// -------------------------------------------------------------------------
/**
* @param camelExchange
* @param cxfContext Request or Response context
* @param camelHeaders
* @param contextKey
*/
@SuppressWarnings("unchecked")
protected void extractInvocationContextFromCamel(Exchange camelExchange,
Map<String, Object> camelHeaders, Map<String, Object> cxfContext,
String contextKey) {
// extract from header
Map context = (Map)camelHeaders.get(contextKey);
if (context != null) {
cxfContext.putAll(context);
if (LOG.isTraceEnabled()) {
LOG.trace("Propagate " + contextKey + " from header context = "
+ ((context instanceof WrappedMessageContext)
? ((WrappedMessageContext)context).getWrappedMap()
: context));
}
}
// extract from exchange property
context = (Map)camelExchange.getProperty(contextKey);
if (context != null) {
cxfContext.putAll(context);
if (LOG.isTraceEnabled()) {
LOG.trace("Propagate " + contextKey + " from exchange property context = "
+ ((context instanceof WrappedMessageContext)
? ((WrappedMessageContext)context).getWrappedMap()
: context));
}
}
// copy camel exchange properties into context
if (camelExchange.getProperties() != null) {
cxfContext.putAll(camelExchange.getProperties());
}
camelExchange.setProperty(contextKey, cxfContext);
}
/**
* @param cxfMessage
* @param camelMessage
* @param exchange provides context for filtering
*/
protected void propagateHeadersFromCxfToCamel(Message cxfMessage,
org.apache.camel.Message camelMessage, Exchange exchange) {
Map<String, List<String>> cxfHeaders = (Map)cxfMessage.get(Message.PROTOCOL_HEADERS);
Map<String, Object> camelHeaders = camelMessage.getHeaders();
if (cxfHeaders != null) {
for (Map.Entry<String, List<String>> entry : cxfHeaders.entrySet()) {
if (!headerFilterStrategy.applyFilterToExternalHeaders(entry.getKey(),
entry.getValue(), exchange)) {
camelHeaders.put(entry.getKey(), entry.getValue().get(0));
if (LOG.isTraceEnabled()) {
LOG.trace("Populate header from CXF header=" + entry.getKey() + " value="
+ entry.getValue());
}
}
}
}
// propagate SOAP/protocol header list
String key = Header.HEADER_LIST;
Object value = cxfMessage.get(key);
if (value != null) {
if (!headerFilterStrategy.applyFilterToExternalHeaders(key, value, exchange)) {
camelHeaders.put(key, value);
if (LOG.isTraceEnabled()) {
LOG.trace("Populate header from CXF header=" + key + " value=" + value);
}
} else {
((List<?>)value).clear();
}
}
}
protected void propagateHeadersFromCamelToCxf(Exchange camelExchange,
Map<String, Object> camelHeaders,
org.apache.cxf.message.Exchange cxfExchange,
Map<String, Object> cxfContext) {
// get cxf transport headers (if any) from camel exchange
Map<String, List<String>> transportHeaders = new HashMap<String, List<String>>();
if (camelExchange != null) {
Map<String, List<String>> h = (Map)camelExchange.getProperty(Message.PROTOCOL_HEADERS);
if (h != null) {
transportHeaders.putAll(h);
}
}
Map<String, List<String>> headers = (Map)camelHeaders.get(Message.PROTOCOL_HEADERS);
if (headers != null) {
transportHeaders.putAll(headers);
}
for (Map.Entry<String, Object> entry : camelHeaders.entrySet()) {
// this header should be filtered, continue to the next header
if (headerFilterStrategy.applyFilterToCamelHeaders(entry.getKey(), entry.getValue(), camelExchange)) {
continue;
}
if (LOG.isTraceEnabled()) {
LOG.trace("Propagate to CXF header: " + entry.getKey() + " value: " + entry.getValue());
}
// put response code in request context so it will be copied to CXF message's property
if (Message.RESPONSE_CODE.equals(entry.getKey())) {
cxfContext.put(entry.getKey(), entry.getValue());
continue;
}
// put SOAP/protocol header list in exchange
if (Header.HEADER_LIST.equals(entry.getKey())) {
List<Header> headerList = (List<Header>)entry.getValue();
for (Header header : headerList) {
header.setDirection(Header.Direction.DIRECTION_OUT);
if (LOG.isTraceEnabled()) {
LOG.trace("Propagate SOAP/protocol header: " + header.getName() + " : " + header.getObject());
}
}
//cxfExchange.put(Header.HEADER_LIST, headerList);
cxfContext.put(entry.getKey(), headerList);
continue;
}
// things that are not filtered and not specifically copied will be put in transport headers
if (entry.getValue() instanceof List) {
transportHeaders.put(entry.getKey(), (List<String>)entry.getValue());
} else {
List<String> listValue = new ArrayList<String>();
listValue.add(entry.getValue().toString());
transportHeaders.put(entry.getKey(), listValue);
}
}
if (transportHeaders.size() > 0) {
cxfContext.put(Message.PROTOCOL_HEADERS, transportHeaders);
}
}
protected static Object getContentFromCxf(Message message, DataFormat dataFormat) {
Set<Class<?>> contentFormats = message.getContentFormats();
Object answer = null;
if (contentFormats != null) {
if (LOG.isTraceEnabled()) {
for (Class<?> contentFormat : contentFormats) {
LOG.trace("Content format=" + contentFormat + " value="
+ message.getContent(contentFormat));
}
}
if (dataFormat == DataFormat.POJO) {
answer = message.getContent(List.class);
if (answer == null) {
answer = message.getContent(Object.class);
if (answer != null) {
answer = new MessageContentsList(answer);
}
}
} else if (dataFormat == DataFormat.PAYLOAD) {
// TODO handle other message types in the future. Currently, this binding only
// deal with SOAP in PayLoad mode.
List<Element> body = message.get(List.class);
List<SoapHeader> headers = CastUtils.cast((List<?>)message.get(Header.HEADER_LIST));
answer = new CxfPayload<SoapHeader>(headers, body);
} else if (dataFormat == DataFormat.MESSAGE) {
answer = message.getContent(InputStream.class);
}
if (LOG.isTraceEnabled()) {
LOG.trace("Extracted body from CXF message = " + answer);
}
}
return answer;
}
public static Object getBodyFromCamel(org.apache.camel.Message out,
DataFormat dataFormat) {
Object answer = null;
if (dataFormat == DataFormat.POJO) {
answer = out.getBody();
} else if (dataFormat == DataFormat.PAYLOAD) {
answer = out.getBody(CxfPayload.class);
} else if (dataFormat == DataFormat.MESSAGE) {
answer = out.getBody(InputStream.class);
}
return answer;
}
}