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
|
package org.apache.qpid.server.queue;
/*
*
* 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.
*
*/
import org.apache.log4j.Logger;
import org.apache.qpid.AMQException;
import org.apache.qpid.server.logging.actors.CurrentActor;
import org.apache.qpid.server.subscription.Subscription;
import org.apache.qpid.transport.TransportException;
import java.util.concurrent.Executor;
import java.util.concurrent.atomic.AtomicBoolean;
import java.util.concurrent.atomic.AtomicInteger;
class SubFlushRunner implements Runnable
{
private static final Logger _logger = Logger.getLogger(SubFlushRunner.class);
private final Subscription _sub;
private static int IDLE = 0;
private static int SCHEDULED = 1;
private static int RUNNING = 2;
private final AtomicInteger _scheduled = new AtomicInteger(IDLE);
private static final long ITERATIONS = SimpleAMQQueue.MAX_ASYNC_DELIVERIES;
private final AtomicBoolean _stateChange = new AtomicBoolean();
public SubFlushRunner(Subscription sub)
{
_sub = sub;
}
public void run()
{
if(_scheduled.compareAndSet(SCHEDULED, RUNNING))
{
boolean complete = false;
_stateChange.set(false);
try
{
CurrentActor.set(_sub.getLogActor());
complete = getQueue().flushSubscription(_sub, ITERATIONS);
}
catch (AMQException e)
{
_logger.error("Exception during asynchronous delivery by " + toString(), e);
}
catch (final TransportException transe)
{
final String errorMessage = "Problem during asynchronous delivery by " + toString();
if(_logger.isDebugEnabled())
{
_logger.debug(errorMessage, transe);
}
else
{
_logger.info(errorMessage + ' ' + transe.getMessage());
}
}
finally
{
CurrentActor.remove();
_scheduled.compareAndSet(RUNNING, IDLE);
if ((!complete || _stateChange.compareAndSet(true,false))&& !_sub.isSuspended())
{
if(_scheduled.compareAndSet(IDLE,SCHEDULED))
{
getQueue().execute(this);
}
}
}
}
}
private SimpleAMQQueue getQueue()
{
return (SimpleAMQQueue) _sub.getQueue();
}
public String toString()
{
return "SubFlushRunner-" + _sub.getLogActor();
}
public void execute(Executor executor)
{
_stateChange.set(true);
if(_scheduled.compareAndSet(IDLE,SCHEDULED))
{
executor.execute(this);
}
}
}
|
