| /** |
| * 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.qpid.proton.jms; |
| |
| import org.apache.qpid.proton.codec.CompositeWritableBuffer; |
| import org.apache.qpid.proton.codec.DroppingWritableBuffer; |
| import org.apache.qpid.proton.codec.WritableBuffer; |
| import org.apache.qpid.proton.amqp.UnsignedInteger; |
| |
| import javax.jms.BytesMessage; |
| import javax.jms.JMSException; |
| import javax.jms.Message; |
| import javax.jms.MessageFormatException; |
| import java.nio.ByteBuffer; |
| |
| import org.apache.qpid.proton.message.ProtonJMessage; |
| import org.apache.qpid.proton.message.impl.MessageFactoryImpl; |
| /** |
| * @author <a href="http://hiramchirino.com">Hiram Chirino</a> |
| */ |
| public class AMQPNativeOutboundTransformer extends OutboundTransformer { |
| |
| private static final MessageFactoryImpl MESSAGE_FACTORY = new MessageFactoryImpl(); |
| |
| public AMQPNativeOutboundTransformer(JMSVendor vendor) { |
| super(vendor); |
| } |
| |
| @Override |
| public EncodedMessage transform(Message msg) throws Exception { |
| if( msg == null ) |
| return null; |
| if( !(msg instanceof BytesMessage) ) |
| return null; |
| try { |
| if( !msg.getBooleanProperty(prefixVendor + "NATIVE") ) { |
| return null; |
| } |
| } catch (MessageFormatException e) { |
| return null; |
| } |
| return transform(this, (BytesMessage) msg); |
| } |
| |
| static EncodedMessage transform(OutboundTransformer options, BytesMessage msg) throws JMSException { |
| long messageFormat; |
| try { |
| messageFormat = msg.getLongProperty(options.prefixVendor + "MESSAGE_FORMAT"); |
| } catch (MessageFormatException e) { |
| return null; |
| } |
| byte data[] = new byte[(int) msg.getBodyLength()]; |
| int dataSize = data.length; |
| msg.readBytes(data); |
| msg.reset(); |
| |
| try { |
| int count = msg.getIntProperty("JMSXDeliveryCount"); |
| if( count > 1 ) { |
| |
| // decode... |
| ProtonJMessage amqp = MESSAGE_FACTORY.createMessage(); |
| int offset = 0; |
| int len = data.length; |
| while( len > 0 ) { |
| final int decoded = amqp.decode(data, offset, len); |
| assert decoded > 0: "Make progress decoding the message"; |
| offset += decoded; |
| len -= decoded; |
| } |
| |
| // Update the DeliveryCount header... |
| amqp.getHeader().setDeliveryCount(new UnsignedInteger(count)); |
| |
| // Re-encode... |
| ByteBuffer buffer = ByteBuffer.wrap(new byte[1024*4]); |
| final DroppingWritableBuffer overflow = new DroppingWritableBuffer(); |
| int c = amqp.encode(new CompositeWritableBuffer(new WritableBuffer.ByteBufferWrapper(buffer), overflow)); |
| if( overflow.position() > 0 ) { |
| buffer = ByteBuffer.wrap(new byte[1024*4+overflow.position()]); |
| c = amqp.encode(new WritableBuffer.ByteBufferWrapper(buffer)); |
| } |
| data = buffer.array(); |
| dataSize = c; |
| } |
| } catch (JMSException e) { |
| } |
| |
| return new EncodedMessage(messageFormat, data, 0, dataSize); |
| } |
| |
| } |