| /* |
| * |
| * 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.framing; |
| |
| import org.slf4j.Logger; |
| import org.slf4j.LoggerFactory; |
| |
| import org.apache.qpid.QpidException; |
| import org.apache.qpid.bytebuffer.QpidByteBuffer; |
| import org.apache.qpid.protocol.AMQVersionAwareProtocolSession; |
| import org.apache.qpid.transport.ByteBufferSender; |
| |
| public abstract class AMQMethodBodyImpl implements AMQMethodBody |
| { |
| private static final Logger LOGGER = LoggerFactory.getLogger(AMQMethodBodyImpl.class); |
| public static final byte TYPE = 1; |
| |
| public AMQMethodBodyImpl() |
| { |
| } |
| |
| public byte getFrameType() |
| { |
| return TYPE; |
| } |
| |
| |
| /** unsigned short |
| * |
| * @return body size*/ |
| abstract protected int getBodySize(); |
| |
| |
| public AMQFrame generateFrame(int channelId) |
| { |
| return new AMQFrame(channelId, this); |
| } |
| |
| /** |
| * Creates an AMQChannelException for the corresponding body type (a channel exception should include the class and |
| * method ids of the body it resulted from). |
| */ |
| |
| public void handle(final int channelId, final AMQVersionAwareProtocolSession session) throws QpidException |
| { |
| session.methodFrameReceived(channelId, this); |
| } |
| |
| public int getSize() |
| { |
| return 2 + 2 + getBodySize(); |
| } |
| |
| @Override |
| public long writePayload(final ByteBufferSender sender) |
| { |
| |
| final int size = getSize(); |
| QpidByteBuffer buf = QpidByteBuffer.allocate(sender.isDirectBufferPreferred(), size); |
| buf.putUnsignedShort(getClazz()); |
| buf.putUnsignedShort(getMethod()); |
| writeMethodPayload(buf); |
| buf.flip(); |
| sender.send(buf); |
| buf.dispose(); |
| return size; |
| } |
| |
| abstract protected void writeMethodPayload(QpidByteBuffer buffer); |
| |
| |
| protected int getSizeOf(AMQShortString string) |
| { |
| return EncodingUtils.encodedShortStringLength(string); |
| } |
| |
| protected void writeByte(QpidByteBuffer buffer, byte b) |
| { |
| buffer.put(b); |
| } |
| |
| protected void writeAMQShortString(QpidByteBuffer buffer, AMQShortString string) |
| { |
| EncodingUtils.writeShortStringBytes(buffer, string); |
| } |
| |
| |
| protected void writeInt(QpidByteBuffer buffer, int i) |
| { |
| buffer.putInt(i); |
| } |
| |
| |
| protected int getSizeOf(FieldTable table) |
| { |
| return EncodingUtils.encodedFieldTableLength(table); //To change body of created methods use File | Settings | File Templates. |
| } |
| |
| protected void writeFieldTable(QpidByteBuffer buffer, FieldTable table) |
| { |
| EncodingUtils.writeFieldTableBytes(buffer, table); |
| } |
| |
| protected void writeLong(QpidByteBuffer buffer, long l) |
| { |
| buffer.putLong(l); |
| } |
| |
| |
| protected int getSizeOf(byte[] response) |
| { |
| return (response == null) ? 4 : response.length + 4; |
| } |
| |
| protected void writeBytes(QpidByteBuffer buffer, byte[] data) |
| { |
| EncodingUtils.writeBytes(buffer,data); |
| } |
| |
| protected void writeShort(QpidByteBuffer buffer, short s) |
| { |
| buffer.putShort(s); |
| } |
| |
| protected void writeBitfield(QpidByteBuffer buffer, byte bitfield0) |
| { |
| buffer.put(bitfield0); |
| } |
| |
| protected void writeUnsignedShort(QpidByteBuffer buffer, int s) |
| { |
| buffer.putUnsignedShort(s); |
| } |
| |
| protected void writeUnsignedInteger(QpidByteBuffer buffer, long i) |
| { |
| buffer.putUnsignedInt(i); |
| } |
| |
| protected void writeUnsignedByte(QpidByteBuffer buffer, short unsignedByte) |
| { |
| buffer.putUnsignedByte(unsignedByte); |
| } |
| |
| } |