1   /*
    2    *  Licensed to the Apache Software Foundation (ASF) under one
    3    *  or more contributor license agreements.  See the NOTICE file
    4    *  distributed with this work for additional information
    5    *  regarding copyright ownership.  The ASF licenses this file
    6    *  to you under the Apache License, Version 2.0 (the
    7    *  "License"); you may not use this file except in compliance
    8    *  with the License.  You may obtain a copy of the License at
    9    *
   10    *   http://www.apache.org/licenses/LICENSE-2.0
   11    *
   12    *  Unless required by applicable law or agreed to in writing,
   13    *  software distributed under the License is distributed on an
   14    *   * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
   15    *  KIND, either express or implied.  See the License for the
   16    *  specific language governing permissions and limitations
   17    *  under the License.
   18    */
   19   package org.apache.synapse.format;
   20   
   21   import java.io.IOException;
   22   import java.io.InputStream;
   23   
   24   import javax.activation.DataHandler;
   25   import javax.xml.namespace.QName;
   26   
   27   import org.apache.axiom.attachments.ByteArrayDataSource;
   28   import org.apache.axiom.om.OMAbstractFactory;
   29   import org.apache.axiom.om.OMElement;
   30   import org.apache.axiom.om.OMFactory;
   31   import org.apache.axis2.AxisFault;
   32   import org.apache.axis2.builder.Builder;
   33   import org.apache.axis2.context.MessageContext;
   34   import org.apache.axis2.description.Parameter;
   35   import org.apache.commons.io.IOUtils;
   36   import org.apache.synapse.transport.base.BaseConstants;
   37   import org.apache.synapse.transport.base.BaseUtils;
   38   
   39   /**
   40    * Message builder for binary payloads.
   41    * <p>
   42    * This builder processes the input message as binary and wraps
   43    * the data in a wrapper element. The name of the wrapper element can
   44    * be configured as a service parameter (see {@link BaseConstants#WRAPPER_PARAM}).
   45    * It defaults to {@link BaseConstants#DEFAULT_BINARY_WRAPPER}.
   46    */
   47   public class BinaryBuilder implements Builder {
   48       public OMElement processDocument(InputStream inputStream,
   49                                        String contentType,
   50                                        MessageContext msgContext) throws AxisFault {
   51           Parameter wrapperParam = msgContext.getAxisService().getParameter(BaseConstants.WRAPPER_PARAM);
   52           QName wrapperQName;
   53           if (wrapperParam != null) {
   54               wrapperQName = BaseUtils.getQNameFromString(wrapperParam.getValue());
   55           } else {
   56               wrapperQName = BaseConstants.DEFAULT_BINARY_WRAPPER;
   57           }
   58           OMFactory factory = OMAbstractFactory.getOMFactory();
   59           OMElement wrapper = factory.createOMElement(wrapperQName, null);
   60           byte[] msgBytes;
   61           try {
   62               msgBytes = IOUtils.toByteArray(inputStream);
   63           } catch (IOException ex) {
   64               throw new AxisFault("Unable to read message payload", ex);
   65           }
   66           DataHandler dataHandler = new DataHandler(new ByteArrayDataSource(msgBytes));
   67           wrapper.addChild(factory.createOMText(dataHandler, true));
   68           msgContext.setDoingMTOM(true);
   69           return wrapper;
   70       }
   71   }