01 /*
02 *
03 * Licensed to the Apache Software Foundation (ASF) under one
04 * or more contributor license agreements. See the NOTICE file
05 * distributed with this work for additional information
06 * regarding copyright ownership. The ASF licenses this file
07 * to you under the Apache License, Version 2.0 (the
08 * "License"); you may not use this file except in compliance
09 * with the License. You may obtain a copy of the License at
10 *
11 * http://www.apache.org/licenses/LICENSE-2.0
12 *
13 * Unless required by applicable law or agreed to in writing,
14 * software distributed under the License is distributed on an
15 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
16 * KIND, either express or implied. See the License for the
17 * specific language governing permissions and limitations
18 * under the License.
19 *
20 */
21 package org.apache.qpid.framing;
22
23 import org.apache.mina.common.ByteBuffer;
24 import org.apache.qpid.protocol.AMQVersionAwareProtocolSession;
25 import org.apache.qpid.AMQException;
26
27 public class HeartbeatBody implements AMQBody
28 {
29 public static final byte TYPE = 8;
30 public static AMQFrame FRAME = new HeartbeatBody().toFrame();
31
32 public HeartbeatBody()
33 {
34
35 }
36
37 public HeartbeatBody(ByteBuffer buffer, long size)
38 {
39 if(size > 0)
40 {
41 //allow other implementations to have a payload, but ignore it:
42 buffer.skip((int) size);
43 }
44 }
45
46 public byte getFrameType()
47 {
48 return TYPE;
49 }
50
51 public int getSize()
52 {
53 return 0;//heartbeats we generate have no payload
54 }
55
56 public void writePayload(ByteBuffer buffer)
57 {
58 }
59
60 public void handle(final int channelId, final AMQVersionAwareProtocolSession session)
61 throws AMQException
62 {
63 session.heartbeatBodyReceived(channelId, this);
64 }
65
66 protected void populateFromBuffer(ByteBuffer buffer, long size) throws AMQFrameDecodingException
67 {
68 if(size > 0)
69 {
70 //allow other implementations to have a payload, but ignore it:
71 buffer.skip((int) size);
72 }
73 }
74
75 public AMQFrame toFrame()
76 {
77 return new AMQFrame(0, this);
78 }
79 }
|