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
|
/*
*
* Copyright (c) 2006 The Apache Software Foundation
*
* Licensed 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 "Connection.h"
#include "ConnectionCodec.h"
#include "ClusterSettings.h"
#include "qpid/cluster/Cluster.h"
#include "qpid/cluster/ConnectionCodec.h"
#include "qpid/cluster/UpdateClient.h"
#include "qpid/broker/Broker.h"
#include "qpid/Plugin.h"
#include "qpid/Options.h"
#include "qpid/shared_ptr.h"
#include "qpid/sys/AtomicValue.h"
#include "qpid/log/Statement.h"
#include "qpid/management/ManagementBroker.h"
#include "qpid/management/IdAllocator.h"
#include "qpid/broker/Exchange.h"
#include "qpid/broker/Queue.h"
#include "qpid/broker/SessionState.h"
#include "qpid/client/ConnectionSettings.h"
#include <boost/utility/in_place_factory.hpp>
#include <boost/scoped_ptr.hpp>
namespace qpid {
namespace cluster {
using namespace std;
using broker::Broker;
using management::IdAllocator;
using management::ManagementAgent;
using management::ManagementBroker;
/** Note separating options from settings to work around boost version differences.
* Old boost takes a reference to options objects, but new boost makes a copy.
* New boost allows a shared_ptr but that's not compatible with old boost.
*/
struct ClusterOptions : public Options {
ClusterSettings& settings;
ClusterOptions(ClusterSettings& v) : Options("Cluster Options"), settings(v) {
addOptions()
("cluster-name", optValue(settings.name, "NAME"), "Name of cluster to join")
("cluster-url", optValue(settings.url,"URL"),
"URL of this broker, advertized to the cluster.\n"
"Defaults to a URL listing all the local IP addresses\n")
("cluster-username", optValue(settings.username, ""), "Username for connections between brokers")
("cluster-password", optValue(settings.password, ""), "Password for connections between brokers")
("cluster-mechanism", optValue(settings.mechanism, ""), "Authentication mechanism for connections between brokers")
#if HAVE_LIBCMAN
("cluster-cman", optValue(settings.quorum), "Integrate with Cluster Manager (CMAN) cluster.")
#endif
("cluster-read-max", optValue(settings.readMax,"N"),
"Experimental: Limit per-client-connection queue of read buffers. 0=no limit.")
("cluster-write-estimate", optValue(settings.writeEstimate, "Kb"),
"Experimental: initial estimate for connection write rate per multicast cycle")
;
}
};
struct UpdateClientIdAllocator : management::IdAllocator
{
qpid::sys::AtomicValue<uint64_t> sequence;
UpdateClientIdAllocator() : sequence(0x4000000000000000LL) {}
uint64_t getIdFor(management::Manageable* m)
{
if (isUpdateQueue(m) || isUpdateExchange(m) || isUpdateSession(m) || isUpdateBinding(m)) {
return ++sequence;
} else {
return 0;
}
}
bool isUpdateQueue(management::Manageable* manageable)
{
qpid::broker::Queue* queue = dynamic_cast<qpid::broker::Queue*>(manageable);
return queue && queue->getName() == UpdateClient::UPDATE;
}
bool isUpdateExchange(management::Manageable* manageable)
{
qpid::broker::Exchange* exchange = dynamic_cast<qpid::broker::Exchange*>(manageable);
return exchange && exchange->getName() == UpdateClient::UPDATE;
}
bool isUpdateSession(management::Manageable* manageable)
{
broker::SessionState* session = dynamic_cast<broker::SessionState*>(manageable);
return session && session->getId().getName() == UpdateClient::UPDATE;
}
bool isUpdateBinding(management::Manageable* manageable)
{
broker::Exchange::Binding* binding = dynamic_cast<broker::Exchange::Binding*>(manageable);
return binding && binding->queue->getName() == UpdateClient::UPDATE;
}
};
struct ClusterPlugin : public Plugin {
ClusterSettings settings;
ClusterOptions options;
Cluster* cluster;
boost::scoped_ptr<ConnectionCodec::Factory> factory;
ClusterPlugin() : options(settings), cluster(0) {}
Options* getOptions() { return &options; }
void earlyInitialize(Plugin::Target& target) {
if (settings.name.empty()) return; // Only if --cluster-name option was specified.
Broker* broker = dynamic_cast<Broker*>(&target);
if (!broker) return;
cluster = new Cluster(settings, *broker);
broker->setConnectionFactory(
boost::shared_ptr<sys::ConnectionCodec::Factory>(
new ConnectionCodec::Factory(broker->getConnectionFactory(), *cluster)));
broker->getExchanges().registerExchange(cluster->getFailoverExchange());
ManagementBroker* mgmt = dynamic_cast<ManagementBroker*>(ManagementAgent::Singleton::getInstance());
if (mgmt) {
std::auto_ptr<IdAllocator> allocator(new UpdateClientIdAllocator());
mgmt->setAllocator(allocator);
}
}
void initialize(Plugin::Target& target) {
Broker* broker = dynamic_cast<Broker*>(&target);
if (broker && cluster)
cluster->initialize();
}
};
static ClusterPlugin instance; // Static initialization.
}} // namespace qpid::cluster
|
