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
|
/*
*
* 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 "Core.h"
#include "MessageHandler.h"
#include "BrokerContext.h"
#include "QueueContext.h"
#include "EventHandler.h"
#include "PrettyId.h"
#include "Group.h"
#include "qpid/broker/Message.h"
#include "qpid/broker/Broker.h"
#include "qpid/broker/QueueRegistry.h"
#include "qpid/broker/Queue.h"
#include "qpid/framing/AllInvoker.h"
#include "qpid/framing/Buffer.h"
#include "qpid/framing/MessageTransferBody.h"
#include "qpid/sys/Thread.h"
#include "qpid/log/Statement.h"
#include <boost/shared_ptr.hpp>
namespace qpid {
namespace cluster {
using namespace broker;
using namespace framing;
MessageHandler::MessageHandler(Group& g, Core& c) :
HandlerBase(g.getEventHandler()),
broker(c.getBroker()),
core(c),
messageBuilders(g.getMessageBuilders()),
messageHolder(g.getMessageHolder())
{}
bool MessageHandler::handle(const framing::AMQFrame& frame) {
assert(frame.getBody());
const AMQBody& body = *frame.getBody();
if (framing::invoke(*this, body).wasHandled()) return true;
// Test for message frame
if (body.type() == HEADER_BODY || body.type() == CONTENT_BODY ||
(body.getMethod() && body.getMethod()->isA<MessageTransferBody>()))
{
boost::shared_ptr<broker::Queue> queue;
boost::intrusive_ptr<broker::Message> message;
if (sender() == self())
messageHolder.check(frame, queue, message);
else
messageBuilders.handle(sender(), frame, queue, message);
if (message) {
BrokerContext::ScopedSuppressReplication ssr;
queue->deliver(message);
if (sender() == self()) // Async completion
message->getIngressCompletion().finishCompleter();
}
return true;
}
return false;
}
boost::shared_ptr<broker::Queue> MessageHandler::findQueue(
const std::string& q, const char* msg)
{
boost::shared_ptr<Queue> queue = broker.getQueues().find(q);
if (!queue) throw Exception(QPID_MSG(msg << ": unknown queue " << q));
return queue;
}
void MessageHandler::enqueue(const std::string& q, uint16_t channel) {
// We only need to build message from other brokers, our own messages
// are held by the MessageHolder.
if (sender() != self()) {
boost::shared_ptr<Queue> queue = findQueue(q, "cluster enqueue");
messageBuilders.announce(sender(), channel, queue);
}
}
void MessageHandler::acquire(const std::string& q, uint32_t position) {
// FIXME aconway 2011-09-15: systematic logging across cluster module.
QPID_LOG(trace, "cluster message " << q << "[" << position
<< "] acquired by " << PrettyId(sender(), self()));
// Note acquires from other members. My own acquires were executed in
// the broker thread
if (sender() != self()) {
boost::shared_ptr<Queue> queue = findQueue(q, "cluster acquire");
QueueContext::get(*queue)->acquire(position);
}
}
void MessageHandler::dequeue(const std::string& q, uint32_t position) {
// FIXME aconway 2011-09-15: systematic logging across cluster module.
QPID_LOG(trace, "cluster message " << q << "[" << position
<< "] dequeued by " << PrettyId(sender(), self()));
// FIXME aconway 2010-10-28: for local dequeues, we should
// complete the ack that initiated the dequeue at this point, see
// BrokerContext::dequeue
// My own dequeues were processed in the broker thread before multicasting.
if (sender() != self()) {
boost::shared_ptr<Queue> queue = findQueue(q, "cluster dequeue");
QueueContext::get(*queue)->dequeue(position);
}
}
void MessageHandler::requeue(const std::string& q, uint32_t position, bool redelivered) {
if (sender() != self()) {
boost::shared_ptr<Queue> queue = findQueue(q, "cluster requeue");
QueueContext::get(*queue)->requeue(position, redelivered);
}
}
}} // namespace qpid::cluster
|
