1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
|
/*
*
* 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.nclient.impl;
import java.util.concurrent.BlockingQueue;
import java.util.concurrent.LinkedBlockingQueue;
import java.util.concurrent.TimeUnit;
import org.apache.qpid.framing.Content;
import org.apache.qpid.framing.MessageAppendBody;
import org.apache.qpid.framing.MessageCheckpointBody;
import org.apache.qpid.framing.MessageCloseBody;
import org.apache.qpid.framing.MessageOpenBody;
import org.apache.qpid.framing.MessageRecoverBody;
import org.apache.qpid.framing.MessageResumeBody;
import org.apache.qpid.framing.MessageTransferBody;
import org.apache.qpid.nclient.amqp.AMQPMessage;
import org.apache.qpid.nclient.amqp.AMQPMessageCallBack;
import org.apache.qpid.nclient.api.QpidException;
import org.apache.qpid.nclient.api.QpidMessageConsumer;
import org.apache.qpid.nclient.core.AMQPException;
import org.apache.qpid.nclient.message.AMQPApplicationMessage;
import org.apache.qpid.nclient.message.MessageHeaders;
import org.apache.qpid.nclient.message.MessageStore;
import org.apache.qpid.nclient.message.TransientMessageStore;
public class QpidMessageConsumerImpl extends AbstractResource implements QpidMessageConsumer, AMQPMessageCallBack
{
private MessageStore _msgStore = new TransientMessageStore();
private final BlockingQueue<AMQPApplicationMessage> _queue = new LinkedBlockingQueue<AMQPApplicationMessage>();
private QpidSessionImpl _session;
private AMQPMessage _amqpMessage;
protected QpidMessageConsumerImpl(QpidSessionImpl session)
{
super("Message Class");
_session = session;
}
/**
* -----------------------------------------------
* Methods from QpidMessageConsumer class
* -----------------------------------------------
*/
public AMQPApplicationMessage get() throws QpidException
{
// I want this to do a message.get
return null;
}
public AMQPApplicationMessage receive()throws QpidException
{
return _queue.poll();
}
public AMQPApplicationMessage receive(long timeout, TimeUnit tu)throws QpidException
{
try
{
return _queue.poll(timeout, tu);
}
catch(Exception e)
{
throw new QpidException("Error retrieving message from queue",e);
}
}
/**
* -----------------------------------------------
* Abstract methods from AbstractResource class
* -----------------------------------------------
*/
protected void openResource() throws AMQPException
{
_amqpMessage = _session.getClassFactory().createMessageClass(_session.getChannel(),null);
}
protected void closeResource() throws AMQPException
{
_session.getClassFactory().destoryMessageClass(_session.getChannel(), _amqpMessage);
}
/**
* -----------------------------------------------
* Methods from AMQPMessageCallback class
* -----------------------------------------------
*/
public void append(MessageAppendBody messageAppendBody, long correlationId) throws AMQPException
{
String reference = new String(messageAppendBody.getReference());
AMQPApplicationMessage msg = _msgStore.getMessage(reference);
msg.addContent(messageAppendBody.getBytes());
}
public void checkpoint(MessageCheckpointBody messageCheckpointBody, long correlationId) throws AMQPException
{
// TODO Auto-generated method stub
}
public void close(MessageCloseBody messageCloseBody, long correlationId) throws AMQPException
{
String reference = new String(messageCloseBody.getReference());
AMQPApplicationMessage msg = _msgStore.getMessage(reference);
enQueue(msg);
_msgStore.removeMessage(reference);
}
public void open(MessageOpenBody messageOpenBody, long correlationId) throws AMQPException
{
String reference = new String(messageOpenBody.getReference());
AMQPApplicationMessage msg = new AMQPApplicationMessage(_session.getChannel(), messageOpenBody.getReference());
_msgStore.storeMessage(reference, msg);
}
public void recover(MessageRecoverBody messageRecoverBody, long correlationId) throws AMQPException
{
// TODO Auto-generated method stub
}
public void resume(MessageResumeBody messageResumeBody, long correlationId) throws AMQPException
{
// TODO Auto-generated method stub
}
public void transfer(MessageTransferBody messageTransferBody, long correlationId) throws AMQPException
{
MessageHeaders messageHeaders = new MessageHeaders();
messageHeaders.setMessageId(messageTransferBody.getMessageId());
messageHeaders.setAppId(messageTransferBody.getAppId());
messageHeaders.setContentType(messageTransferBody.getContentType());
messageHeaders.setEncoding(messageTransferBody.getContentEncoding());
messageHeaders.setCorrelationId(messageTransferBody.getCorrelationId());
messageHeaders.setDestination(messageTransferBody.getDestination());
messageHeaders.setExchange(messageTransferBody.getExchange());
messageHeaders.setExpiration(messageTransferBody.getExpiration());
messageHeaders.setReplyTo(messageTransferBody.getReplyTo());
messageHeaders.setRoutingKey(messageTransferBody.getRoutingKey());
messageHeaders.setTransactionId(messageTransferBody.getTransactionId());
messageHeaders.setUserId(messageTransferBody.getUserId());
messageHeaders.setPriority(messageTransferBody.getPriority());
messageHeaders.setDeliveryMode(messageTransferBody.getDeliveryMode());
messageHeaders.setApplicationHeaders(messageTransferBody.getApplicationHeaders());
if (messageTransferBody.getBody().getContentType() == Content.TypeEnum.INLINE_T)
{
AMQPApplicationMessage msg = new AMQPApplicationMessage(_session.getChannel(),
correlationId,
messageHeaders,
messageTransferBody.getBody().getContentAsByteArray(),
messageTransferBody.getRedelivered());
enQueue(msg);
}
else
{
byte[] referenceId = messageTransferBody.getBody().getContentAsByteArray();
AMQPApplicationMessage msg = new AMQPApplicationMessage(_session.getChannel(),referenceId);
msg.setMessageHeaders(messageHeaders);
msg.setRedeliveredFlag(messageTransferBody.getRedelivered());
_msgStore.storeMessage(new String(referenceId), msg);
}
}
private void enQueue(AMQPApplicationMessage msg)throws AMQPException
{
try
{
_queue.put(msg);
}
catch(Exception e)
{
throw new AMQPException("Error queueing the messsage",e);
}
}
}
|
