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
|
/*
*
* 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 "BrokerHandler.h"
#include "qpid/framing/ClusterMessageRoutingBody.h"
#include "qpid/framing/ClusterMessageRoutedBody.h"
#include "qpid/framing/ClusterMessageEnqueueBody.h"
#include "qpid/framing/ClusterMessageDequeueBody.h"
#include "qpid/framing/ClusterWiringCreateQueueBody.h"
#include "qpid/framing/ClusterWiringCreateExchangeBody.h"
#include "qpid/framing/ClusterWiringDestroyQueueBody.h"
#include "qpid/framing/ClusterWiringDestroyExchangeBody.h"
#include "qpid/framing/ClusterWiringBindBody.h"
#include "qpid/framing/ClusterWiringUnbindBody.h"
#include "qpid/sys/Thread.h"
#include "qpid/broker/QueuedMessage.h"
#include "qpid/broker/Queue.h"
#include "qpid/broker/Exchange.h"
#include "qpid/framing/Buffer.h"
#include "qpid/log/Statement.h"
namespace qpid {
namespace cluster {
using namespace framing;
using namespace broker;
namespace {
// noReplicate means the current thread is handling a message
// received from the cluster so it should not be replciated.
QPID_TSS bool tssNoReplicate = false;
// Routing ID of the message being routed in the current thread.
// 0 if we are not currently routing a message.
QPID_TSS RoutingId tssRoutingId = 0;
}
BrokerHandler::ScopedSuppressReplication::ScopedSuppressReplication() {
assert(!tssNoReplicate);
tssNoReplicate = true;
}
BrokerHandler::ScopedSuppressReplication::~ScopedSuppressReplication() {
assert(tssNoReplicate);
tssNoReplicate = false;
}
BrokerHandler::BrokerHandler(Core& c) : core(c) {}
RoutingId BrokerHandler::nextRoutingId() {
RoutingId id = ++routingId;
if (id == 0) id = ++routingId; // Avoid 0 on wrap-around.
return id;
}
void BrokerHandler::routing(const boost::intrusive_ptr<Message>&) { }
bool BrokerHandler::enqueue(Queue& queue, const boost::intrusive_ptr<Message>& msg)
{
if (tssNoReplicate) return true;
if (!tssRoutingId) { // This is the first enqueue, so send the message
tssRoutingId = nextRoutingId();
// FIXME aconway 2010-10-20: replicate message in fixed size buffers.
std::string data(msg->encodedSize(),char());
framing::Buffer buf(&data[0], data.size());
msg->encode(buf);
core.mcast(ClusterMessageRoutingBody(ProtocolVersion(), tssRoutingId, data));
core.getRoutingMap().put(tssRoutingId, msg);
}
core.mcast(ClusterMessageEnqueueBody(ProtocolVersion(), tssRoutingId, queue.getName()));
// TODO aconway 2010-10-21: configable option for strict (wait
// for CPG deliver to do local deliver) vs. loose (local deliver
// immediately).
return false;
}
void BrokerHandler::routed(const boost::intrusive_ptr<Message>&) {
if (tssRoutingId) { // we enqueued at least one message.
core.mcast(ClusterMessageRoutedBody(ProtocolVersion(), tssRoutingId));
// Note: routingMap is cleaned up on CPG delivery in MessageHandler.
tssRoutingId = 0;
}
}
void BrokerHandler::dequeue(const broker::QueuedMessage& qm) {
if (tssNoReplicate) return;
// FIXME aconway 2010-10-28: we also need to delay completion of the
// ack that caused this dequeue until self-delivery of the mcast below.
core.mcast(ClusterMessageDequeueBody(
ProtocolVersion(), qm.queue->getName(), qm.position));
}
void BrokerHandler::create(const broker::Queue& q) {
if (tssNoReplicate) return;
std::string data(q.encodedSize(), '\0');
framing::Buffer buf(&data[0], data.size());
q.encode(buf);
core.mcast(ClusterWiringCreateQueueBody(ProtocolVersion(), data));
}
void BrokerHandler::destroy(const broker::Queue& q) {
if (tssNoReplicate) return;
core.mcast(ClusterWiringDestroyQueueBody(ProtocolVersion(), q.getName()));
}
void BrokerHandler::create(const broker::Exchange& ex) {
if (tssNoReplicate) return;
std::string data(ex.encodedSize(), '\0');
framing::Buffer buf(&data[0], data.size());
ex.encode(buf);
core.mcast(ClusterWiringCreateExchangeBody(ProtocolVersion(), data));
}
void BrokerHandler::destroy(const broker::Exchange& ex) {
if (tssNoReplicate) return;
core.mcast(ClusterWiringDestroyExchangeBody(ProtocolVersion(), ex.getName()));
}
void BrokerHandler::bind(const broker::Queue& q, const broker::Exchange& ex,
const std::string& key, const framing::FieldTable& args)
{
if (tssNoReplicate) return;
core.mcast(ClusterWiringBindBody(
ProtocolVersion(), q.getName(), ex.getName(), key, args));
}
void BrokerHandler::unbind(const broker::Queue& q, const broker::Exchange& ex,
const std::string& key, const framing::FieldTable& args)
{
if (tssNoReplicate) return;
core.mcast(ClusterWiringUnbindBody(
ProtocolVersion(), q.getName(), ex.getName(), key, args));
}
}} // namespace qpid::cluster
|
