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
158
159
160
161
|
#ifndef QPID_CLUSTER_CLUSTER_H
#define QPID_CLUSTER_CLUSTER_H
/*
*
* 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 "qpid/cluster/Cpg.h"
#include "qpid/cluster/ShadowConnectionOutputHandler.h"
#include "qpid/cluster/PollableQueue.h"
#include "qpid/broker/Broker.h"
#include "qpid/broker/Connection.h"
#include "qpid/sys/Dispatcher.h"
#include "qpid/sys/Monitor.h"
#include "qpid/sys/Runnable.h"
#include "qpid/sys/Thread.h"
#include "qpid/log/Logger.h"
#include "qpid/Url.h"
#include "qpid/RefCounted.h"
#include <boost/optional.hpp>
#include <boost/function.hpp>
#include <boost/intrusive_ptr.hpp>
#include <map>
#include <vector>
namespace qpid {
namespace cluster {
class ConnectionInterceptor;
/**
* Connection to the cluster.
* Keeps cluster membership data.
*/
class Cluster : private Cpg::Handler, public RefCounted
{
public:
typedef boost::tuple<Cpg::Id, void*> ShadowConnectionId;
/** Details of a cluster member */
struct Member {
Cpg::Id id;
Url url;
};
typedef std::vector<Member> MemberList;
/**
* Join a cluster.
* @param name of the cluster.
* @param url of this broker, sent to the cluster.
*/
Cluster(const std::string& name, const Url& url, broker::Broker&);
virtual ~Cluster();
/** Initialize interceptors for a new connection */
void initialize(broker::Connection&);
/** Get the current cluster membership. */
MemberList getMembers() const;
/** Number of members in the cluster. */
size_t size() const;
bool empty() const { return size() == 0; }
/** Send frame to the cluster */
void send(const framing::AMQFrame&, ConnectionInterceptor*);
/** Leave the cluster */
void leave();
// Cluster frame handing functions
void notify(const std::string& url);
void connectionClose();
private:
typedef Cpg::Id Id;
typedef std::map<Id, Member> MemberMap;
typedef std::map<ShadowConnectionId, ConnectionInterceptor*> ShadowConnectionMap;
struct DeliveredFrame {
framing::AMQFrame frame; Id from; void* connection;
DeliveredFrame(const framing::AMQFrame& f, const Id i, void* c)
: frame(f), from(i), connection(c) {}
};
boost::function<void()> shutdownNext;
void notify(); ///< Notify cluster of my details.
/** CPG deliver callback. */
void deliver(
cpg_handle_t /*handle*/,
struct cpg_name *group,
uint32_t /*nodeid*/,
uint32_t /*pid*/,
void* /*msg*/,
int /*msg_len*/);
/** CPG config change callback */
void configChange(
cpg_handle_t /*handle*/,
struct cpg_name */*group*/,
struct cpg_address */*members*/, int /*nMembers*/,
struct cpg_address */*left*/, int /*nLeft*/,
struct cpg_address */*joined*/, int /*nJoined*/
);
/** Callback to handle delivered frames from the deliverQueue. */
void deliverFrames(const PollableQueue<DeliveredFrame>::iterator& begin,
const PollableQueue<DeliveredFrame>::iterator& end);
void dispatch(sys::DispatchHandle&);
void disconnect(sys::DispatchHandle&);
void handleMethod(Id from, ConnectionInterceptor* connection, framing::AMQMethodBody& method);
ConnectionInterceptor* getShadowConnection(const Cpg::Id&, void*);
mutable sys::Monitor lock; // Protect access to members.
broker::Broker* broker;
boost::shared_ptr<sys::Poller> poller;
Cpg cpg;
Cpg::Name name;
Url url;
MemberMap members;
Id self;
ShadowConnectionMap shadowConnectionMap;
ShadowConnectionOutputHandler shadowOut;
sys::DispatchHandle cpgDispatchHandle;
PollableQueue<DeliveredFrame> deliverQueue;
friend std::ostream& operator <<(std::ostream&, const Cluster&);
friend std::ostream& operator <<(std::ostream&, const MemberMap::value_type&);
friend std::ostream& operator <<(std::ostream&, const MemberMap&);
};
}} // namespace qpid::cluster
#endif /*!QPID_CLUSTER_CLUSTER_H*/
|
