/*
* 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.axis2.datasource.jaxb;
import org.apache.axiom.om.OMException;
import org.apache.axiom.om.OMText;
import org.apache.axiom.om.impl.MTOMXMLStreamWriter;
import org.apache.axiom.om.impl.llom.OMTextImpl;
import org.apache.axis2.Constants;
import org.apache.axis2.Constants.Configuration;
import org.apache.axis2.context.MessageContext;
import org.apache.axis2.transport.http.HTTPConstants;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import javax.activation.DataHandler;
import javax.mail.MessagingException;
import javax.mail.internet.InternetHeaders;
import javax.mail.internet.MimeBodyPart;
import javax.mail.internet.MimePartDataSource;
import javax.xml.bind.attachment.AttachmentMarshaller;
import javax.xml.stream.XMLStreamWriter;
/**
* An implementation of the JAXB AttachmentMarshaller that is used to handle binary data from JAXB
* and create populate the appropriate constructs on the MessageContext
*/
public class JAXBAttachmentMarshaller extends AttachmentMarshaller {
private static final Log log = LogFactory.getLog(JAXBAttachmentMarshaller.class);
private MessageContext msgContext;
private XMLStreamWriter writer;
private static final String APPLICATION_OCTET = "application/octet-stream";
/**
* Construct the JAXBAttachmentMarshaller that has access to the MessageContext
* @param msgContext
* @param writer
*/
public JAXBAttachmentMarshaller(MessageContext msgContext, XMLStreamWriter writer) {
this.msgContext = msgContext;
this.writer = writer;
}
/**
* Override isXOPPackaget to calculate the isXOPPackage setting
*/
public boolean isXOPPackage() {
boolean value = false;
// For outbound messages, only trigger MTOM if
// the message is mtom enabled.
value = isMTOMEnabled();
// If the writer is not an MTOM XMLStreamWriter then we don't have
// any place to store the attachment
if (!(writer instanceof MTOMXMLStreamWriter)) {
if (log.isDebugEnabled()) {
log.debug("The writer is not enabled for MTOM. " +
"MTOM values will not be optimized");
}
value = false;
}
if (log.isDebugEnabled()){
log.debug("isXOPPackage returns " + value);
}
return value;
}
/* (non-Javadoc)
* @see javax.xml.bind.attachment.AttachmentMarshaller#addMtomAttachment(byte[], int, int, java.lang.String, java.lang.String, java.lang.String)
*/
public String addMtomAttachment(byte[] data, int offset, int length,
String mimeType, String namespace, String localPart) {
if (offset != 0 || length != data.length) {
int len = length - offset;
byte[] newData = new byte[len];
System.arraycopy(data, offset, newData, 0, len);
data = newData;
}
if (mimeType == null || mimeType.length() == 0) {
mimeType = APPLICATION_OCTET;
}
if (log.isDebugEnabled()){
log.debug("Adding MTOM/XOP byte array attachment for element: " +
"{" + namespace + "}" + localPart);
}
String cid = null;
try {
// Create MIME Body Part
InternetHeaders ih = new InternetHeaders();
ih.setHeader(HTTPConstants.HEADER_CONTENT_TYPE, mimeType);
MimeBodyPart mbp = new MimeBodyPart(ih, data);
//Create a data source for the MIME Body Part
MimePartDataSource mpds = new MimePartDataSource(mbp);
long dataLength =data.length;
Integer value = null;
if (msgContext != null) {
value = (Integer) msgContext.getProperty(Constants.Configuration.MTOM_THRESHOLD);
}
int optimizedThreshold = (value != null) ? value.intValue() : 0;
if(optimizedThreshold==0 || dataLength > optimizedThreshold){
DataHandler dataHandler = new DataHandler(mpds);
cid = addDataHandler(dataHandler);
}
// Add the content id to the mime body part
mbp.setHeader(HTTPConstants.HEADER_CONTENT_ID, cid);
} catch (MessagingException e) {
throw new OMException(e);
}
return cid == null ? null : "cid:" + cid;
}
/* (non-Javadoc)
* @see javax.xml.bind.attachment.AttachmentMarshaller#addMtomAttachment(javax.activation.DataHandler, java.lang.String, java.lang.String)
*/
public String addMtomAttachment(DataHandler data, String namespace, String localPart) {
if (log.isDebugEnabled()){
log.debug("Adding MTOM/XOP datahandler attachment for element: " +
"{" + namespace + "}" + localPart);
}
String cid = addDataHandler(data);
return cid == null ? null : "cid:" + cid;
}
/* (non-Javadoc)
* @see javax.xml.bind.attachment.AttachmentMarshaller#addSwaRefAttachment(javax.activation.DataHandler)
*/
public String addSwaRefAttachment(DataHandler data) {
if (log.isDebugEnabled()){
log.debug("Adding SWAREF attachment");
}
String cid = addDataHandler(data);
setDoingSWA();
return "cid:" + cid;
}
/**
* Add the DataHandler to the writer and context
* @param dh
* @return
*/
private String addDataHandler(DataHandler dh) {
String cid = null;
OMText textNode = null;
// If this is an MTOMXMLStreamWriter then inform the writer
// that it must write out this attchment (I guess we should do this
// even if the attachment is SWAREF ?)
if (writer instanceof MTOMXMLStreamWriter) {
textNode = new OMTextImpl(dh, null);
if(((MTOMXMLStreamWriter) writer).isOptimizedThreshold(textNode)){
cid = textNode.getContentID();
((MTOMXMLStreamWriter) writer).writeOptimized(textNode);
// Remember the attachment on the message.
addDataHandler(dh, cid);
}
}
if (log.isDebugEnabled()){
log.debug(" content id=" + cid);
log.debug(" dataHandler =" + dh);
}
return cid;
}
/**
* @return if MTOM enabled calculated from the context information
*/
public boolean isMTOMEnabled() {
if (msgContext == null) {
return false;
} else {
String value = (String) msgContext.getProperty(Configuration.ENABLE_MTOM);
return ("true".equalsIgnoreCase(value));
}
}
/**
* Indicate on the context that SWA attachments are encountered
*/
public void setDoingSWA() {
if (msgContext != null) {
msgContext.setDoingSwA(true);
msgContext.setProperty(Configuration.ENABLE_SWA, "true");
}
}
/**
* Inform the context that an Attachment (DataHandler, CID) is written.
* @param dh
* @param cid
*/
public void addDataHandler(DataHandler dh, String cid) {
if (msgContext != null) {
msgContext.addAttachment(cid, dh);
}
}
}