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
|
/*
*
* 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.
*
*/
#include "QueueEvents.h"
#include "qpid/Exception.h"
#include "qpid/log/Statement.h"
namespace qpid {
namespace broker {
QueueEvents::QueueEvents(const boost::shared_ptr<sys::Poller>& poller) :
eventQueue(boost::bind(&QueueEvents::handle, this, _1), poller), enabled(true)
{
eventQueue.start();
}
QueueEvents::~QueueEvents()
{
eventQueue.stop();
}
void QueueEvents::enqueued(const QueuedMessage& m)
{
if (enabled) eventQueue.push(Event(ENQUEUE, m));
}
void QueueEvents::dequeued(const QueuedMessage& m)
{
if (enabled) eventQueue.push(Event(DEQUEUE, m));
}
void QueueEvents::registerListener(const std::string& id, const EventListener& listener)
{
qpid::sys::Mutex::ScopedLock l(lock);
if (listeners.find(id) == listeners.end()) {
listeners[id] = listener;
} else {
throw Exception(QPID_MSG("Event listener already registered for '" << id << "'"));
}
}
void QueueEvents::unregisterListener(const std::string& id)
{
qpid::sys::Mutex::ScopedLock l(lock);
if (listeners.find(id) == listeners.end()) {
throw Exception(QPID_MSG("No event listener registered for '" << id << "'"));
} else {
listeners.erase(id);
}
}
void QueueEvents::handle(EventQueue::Queue& events)
{
qpid::sys::Mutex::ScopedLock l(lock);
while (!events.empty()) {
for (Listeners::iterator i = listeners.begin(); i != listeners.end(); i++) {
i->second(events.front());
}
events.pop_front();
}
}
void QueueEvents::shutdown()
{
if (!eventQueue.empty() && !listeners.empty()) eventQueue.shutdown();
}
void QueueEvents::enable()
{
enabled = true;
QPID_LOG(debug, "Queue events enabled");
}
void QueueEvents::disable()
{
enabled = false;
QPID_LOG(debug, "Queue events disabled");
}
QueueEvents::Event::Event(EventType t, const QueuedMessage& m) : type(t), msg(m) {}
}} // namespace qpid::broker
|
