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
|
/*
*
* 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 <boost/program_options/value_semantic.hpp>
#include "qpid/broker/Broker.h"
#include "qpid/cluster/Cluster.h"
#include "qpid/Plugin.h"
#include "qpid/Options.h"
#include "qpid/shared_ptr.h"
#include <boost/optional.hpp>
#include <boost/utility/in_place_factory.hpp>
namespace qpid {
namespace cluster {
using namespace std;
using broker::Broker;
struct OptionValues {
string name;
string url;
Url getUrl(uint16_t port) const {
if (url.empty()) return Url::getIpAddressesUrl(port);
return Url(url);
}
};
// Note we update the values in a separate struct.
// This is to work around boost::program_options differences,
// older versions took a reference to the options, newer
// ones take a copy (or require a shared_ptr)
//
struct ClusterOptions : public Options {
ClusterOptions(OptionValues* v) : Options("Cluster Options") {
addOptions()
("cluster-name", optValue(v->name, "NAME"), "Name of cluster to join")
("cluster-url", optValue(v->url,"URL"),
"URL of this broker, advertized to the cluster.\n"
"Defaults to a URL listing all the local IP addresses\n");
}
};
struct ClusterPlugin : public PluginT<Broker> {
OptionValues values;
boost::optional<Cluster> cluster;
ClusterPlugin(const OptionValues& v) : values(v) {}
void initializeT(Broker& broker) {
cluster = boost::in_place(values.name, values.getUrl(broker.getPort()), boost::ref(broker));
broker.getSessionManager().add(cluster->getObserver());
}
};
struct PluginFactory : public Plugin::FactoryT<Broker> {
OptionValues values;
ClusterOptions options;
PluginFactory() : options(&values) {}
Options* getOptions() { return &options; }
boost::shared_ptr<Plugin> createT(Broker&) {
// Only provide to a Broker, and only if the --cluster config is set.
if (values.name.empty())
return boost::shared_ptr<Plugin>();
else
return make_shared_ptr(new ClusterPlugin(values));
}
};
static PluginFactory instance; // Static initialization.
}} // namespace qpid::cluster
|
