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
|
/*
*
* 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.server.store;
import java.util.List;
import java.util.concurrent.atomic.AtomicBoolean;
import java.util.concurrent.atomic.AtomicLong;
import org.apache.commons.configuration.Configuration;
import org.apache.log4j.Logger;
import org.apache.qpid.AMQException;
import org.apache.qpid.AMQStoreException;
import org.apache.qpid.framing.AMQShortString;
import org.apache.qpid.framing.FieldTable;
import org.apache.qpid.server.exchange.Exchange;
import org.apache.qpid.server.logging.LogSubject;
import org.apache.qpid.server.logging.actors.CurrentActor;
import org.apache.qpid.server.logging.messages.ConfigStoreMessages;
import org.apache.qpid.server.logging.messages.MessageStoreMessages;
import org.apache.qpid.server.queue.AMQQueue;
/** A simple message store that stores the messages in a threadsafe structure in memory. */
public class MemoryMessageStore implements MessageStore
{
private static final Logger _log = Logger.getLogger(MemoryMessageStore.class);
private static final int DEFAULT_HASHTABLE_CAPACITY = 50000;
private static final String HASHTABLE_CAPACITY_CONFIG = "hashtable-capacity";
private final AtomicLong _messageId = new AtomicLong(1);
private AtomicBoolean _closed = new AtomicBoolean(false);
private LogSubject _logSubject;
private static final Transaction IN_MEMORY_TRANSACTION = new Transaction()
{
public void enqueueMessage(TransactionLogResource queue, Long messageId) throws AMQStoreException
{
}
public void dequeueMessage(TransactionLogResource queue, Long messageId) throws AMQStoreException
{
}
public void commitTran() throws AMQStoreException
{
}
public StoreFuture commitTranAsync() throws AMQStoreException
{
return IMMEDIATE_FUTURE;
}
public void abortTran() throws AMQStoreException
{
}
};
public void configureConfigStore(String name, ConfigurationRecoveryHandler handler, Configuration configuration, LogSubject logSubject) throws Exception
{
_logSubject = logSubject;
CurrentActor.get().message(_logSubject, ConfigStoreMessages.CREATED(this.getClass().getName()));
}
public void configureMessageStore(String name,
MessageStoreRecoveryHandler recoveryHandler,
Configuration config,
LogSubject logSubject) throws Exception
{
if(_logSubject == null)
{
_logSubject = logSubject;
}
int hashtableCapacity = config.getInt(name + "." + HASHTABLE_CAPACITY_CONFIG, DEFAULT_HASHTABLE_CAPACITY);
_log.info("Using capacity " + hashtableCapacity + " for hash tables");
CurrentActor.get().message(_logSubject, MessageStoreMessages.CREATED(this.getClass().getName()));
}
public void close() throws Exception
{
_closed.getAndSet(true);
CurrentActor.get().message(_logSubject,MessageStoreMessages.CLOSED());
}
public StoredMessage addMessage(StorableMessageMetaData metaData)
{
final long id = _messageId.getAndIncrement();
StoredMemoryMessage message = new StoredMemoryMessage(id, metaData);
return message;
}
public void createExchange(Exchange exchange) throws AMQStoreException
{
}
public void removeExchange(Exchange exchange) throws AMQStoreException
{
}
public void bindQueue(Exchange exchange, AMQShortString routingKey, AMQQueue queue, FieldTable args) throws AMQStoreException
{
}
public void unbindQueue(Exchange exchange, AMQShortString routingKey, AMQQueue queue, FieldTable args) throws AMQStoreException
{
}
public void createQueue(AMQQueue queue) throws AMQStoreException
{
// Not requred to do anything
}
public void createQueue(AMQQueue queue, FieldTable arguments) throws AMQStoreException
{
// Not required to do anything
}
public void removeQueue(final AMQQueue queue) throws AMQStoreException
{
// Not required to do anything
}
public void updateQueue(final AMQQueue queue) throws AMQStoreException
{
// Not required to do anything
}
public void configureTransactionLog(String name,
TransactionLogRecoveryHandler recoveryHandler,
Configuration storeConfiguration,
LogSubject logSubject) throws Exception
{
//To change body of implemented methods use File | Settings | File Templates.
}
public Transaction newTransaction()
{
return IN_MEMORY_TRANSACTION;
}
public List<AMQQueue> createQueues() throws AMQException
{
return null;
}
public Long getNewMessageId()
{
return _messageId.getAndIncrement();
}
public boolean isPersistent()
{
return false;
}
private void checkNotClosed() throws MessageStoreClosedException
{
if (_closed.get())
{
throw new MessageStoreClosedException();
}
}
}
|
