/*
* Copyright 2005,2006 WSO2, Inc. http://www.wso2.org
*
* Licensed 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.wso2.carbon.relay.mediators.builder;
import org.apache.axiom.om.OMElement;
import org.apache.axiom.om.OMNode;
import org.apache.axiom.om.OMText;
import org.apache.axiom.soap.SOAPEnvelope;
import org.apache.axis2.AxisFault;
import org.apache.axis2.Constants;
import org.apache.axis2.builder.Builder;
import org.apache.axis2.transport.MessageFormatter;
import org.apache.axis2.transport.TransportUtils;
import org.apache.synapse.MessageContext;
import org.apache.synapse.SynapseLog;
import org.apache.synapse.core.axis2.Axis2MessageContext;
import org.apache.synapse.mediators.AbstractMediator;
import org.wso2.carbon.relay.MessageBuilder;
import org.wso2.carbon.relay.RelayConstants;
import org.wso2.carbon.relay.StreamingOnRequestDataSource;
import javax.activation.DataHandler;
import javax.activation.DataSource;
import java.io.IOException;
import java.io.InputStream;
import java.util.Map;
public class BuilderMediator extends AbstractMediator {
private MessageBuilder messageBuilder = new MessageBuilder();
public boolean mediate(MessageContext msgCtx) {
SynapseLog synLog = getLog(msgCtx);
if (synLog.isTraceOrDebugEnabled()) {
synLog.traceOrDebug("Build mediator : start");
}
SOAPEnvelope envelope = msgCtx.getEnvelope();
org.apache.axis2.context.MessageContext messageContext =
((Axis2MessageContext) msgCtx).getAxis2MessageContext();
OMElement contentEle = envelope.getBody().getFirstChildWithName(
RelayConstants.BINARY_CONTENT_QNAME);
if (contentEle != null) {
OMNode node = contentEle.getFirstOMChild();
if (node != null && (node instanceof OMText)) {
OMText binaryDataNode = (OMText) node;
DataHandler dh = (DataHandler) binaryDataNode.getDataHandler();
if (dh == null) {
if (synLog.isTraceOrDebugEnabled()) {
synLog.auditWarn("Message has the Binary content element. " +
"But doesn't have binary content embedded within it");
}
return true;
}
DataSource dataSource = dh.getDataSource();
//Ask the data source to stream, if it has not alredy cached the request
if (dataSource instanceof StreamingOnRequestDataSource) {
((StreamingOnRequestDataSource) dataSource).setLastUse(true);
}
InputStream in = null;
try {
in = dh.getInputStream();
} catch (IOException e) {
handleException("Error retrieving InputStream from data handler", e, msgCtx);
}
String contentType = (String) messageContext.getProperty(
Constants.Configuration.CONTENT_TYPE);
OMElement element = null;
if (synLog.isTraceOrDebugEnabled()) {
synLog.traceOrDebug("Trying to build a message with content type :" +
contentType);
}
try {
element = messageBuilder.getDocument(contentType, messageContext, in);
} catch (Exception e) {
synLog.auditWarn("Error buidling message with content type :" + contentType);
}
if (element != null) {
try {
messageContext.setEnvelope(TransportUtils.createSOAPEnvelope(element));
// set the formatters map to the message context
messageContext.setProperty(MessageBuilder.RELAY_FORMATTERS_MAP,
messageBuilder.getFormatters());
} catch (AxisFault axisFault) {
handleException("Failed to set the built SOAP " +
"Envelope to the message context", axisFault, msgCtx);
}
} else {
synLog.auditWarn("Error occurred while trying to build the message, " +
"trying to send the message throgh");
}
//now we have undone thing done by Relay
if (synLog.isTraceOrDebugEnabled()) {
synLog.traceOrDebug("Build mediator : end");
}
} else {
if (synLog.isTraceOrDebugEnabled()) {
//if is not wrapped binary content, there is nothing to be done
synLog.traceOrDebug("not wrapped binary content, there is nothing to be done");
}
}
}
return true;
}
public void addFormatter(String contentType, MessageFormatter formatter) {
messageBuilder.addFormatter(contentType, formatter);
}
public void addBuilder(String contentType, Builder builder) {
messageBuilder.addBuilder(contentType, builder);
}
public Map<String, Builder> getMessageBuilders() {
return messageBuilder.getBuilders();
}
public Map<String, MessageFormatter> getMessageFormatters() {
return messageBuilder.getFormatters();
}
}