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
|
#ifndef QPID_CLUSTER_MULTICASTER_H
#define QPID_CLUSTER_MULTICASTER_H
/*
*
* 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 "qpid/cluster/types.h"
#include "qpid/cluster/Event.h"
#include "qpid/sys/PollableQueue.h"
#include "qpid/sys/Mutex.h"
#include <boost/shared_ptr.hpp>
#include <deque>
namespace qpid {
namespace sys {
class Poller;
}
namespace cluster {
class Cpg;
/**
* Multicast to the cluster. Shared, thread safe object.
*
* holding mode: Hold connection events for later multicast. Cluster
* events are never held. Used during PRE_INIT/INIT state when we
* want to hold any connection traffic till we are read in the
* cluster.
*
* bypass mode: Multicast cluster events directly in the calling
* thread. This mode is used by cluster in PRE_INIT state the poller
* is not yet be active.
*
* Multicaster is created in bypass+holding mode, they are disabled by
* start and setReady respectively.
*/
class Multicaster
{
public:
/** Starts in initializing mode. */
Multicaster(Cpg& cpg_,
const boost::shared_ptr<sys::Poller>&,
boost::function<void()> onError
);
void mcastControl(const framing::AMQBody& controlBody, const ConnectionId&);
void mcastControl(const framing::AMQFrame& controlFrame, const ConnectionId&);
void mcastBuffer(const char*, size_t, const ConnectionId&);
void mcast(const Event& e);
/** Start the pollable queue, turn off bypass mode. */
void start();
/** Switch to ready mode, release held messages. */
void setReady();
private:
typedef sys::PollableQueue<Event> PollableEventQueue;
typedef std::deque<Event> PlainEventQueue;
PollableEventQueue::Batch::const_iterator sendMcast(const PollableEventQueue::Batch& );
sys::Mutex lock;
boost::function<void()> onError;
Cpg& cpg;
PollableEventQueue queue;
bool ready;
PlainEventQueue holdingQueue;
std::vector<struct ::iovec> ioVector;
bool bypass;
};
}} // namespace qpid::cluster
#endif /*!QPID_CLUSTER_MULTICASTER_H*/
|
