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
|
/*
*
* 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 "Connection.h"
#include "qpid/log/Statement.h"
#include "qpid/amqp_0_10/exceptions.h"
#include "qpid/framing/AMQFrame.h"
#include "qpid/framing/Buffer.h"
#include "qpid/framing/ProtocolInitiation.h"
namespace qpid {
namespace amqp_0_10 {
using sys::Mutex;
Connection::Connection(sys::OutputControl& o, const std::string& id, bool _isClient)
: frameQueueClosed(false), output(o), identifier(id), initialized(false), isClient(_isClient), buffered(0)
{}
void Connection::setInputHandler(std::auto_ptr<sys::ConnectionInputHandler> c) {
connection = c;
}
size_t Connection::decode(const char* buffer, size_t size) {
framing::Buffer in(const_cast<char*>(buffer), size);
if (isClient && !initialized) {
//read in protocol header
framing::ProtocolInitiation pi;
if (pi.decode(in)) {
//TODO: check the version is correct
QPID_LOG(trace, "RECV " << identifier << " INIT(" << pi << ")");
}
initialized = true;
}
framing::AMQFrame frame;
while(frame.decode(in)) {
QPID_LOG(trace, "RECV [" << identifier << "]: " << frame);
connection->received(frame);
}
return in.getPosition();
}
bool Connection::canEncode() {
if (!frameQueueClosed) connection->doOutput();
Mutex::ScopedLock l(frameQueueLock);
return (!isClient && !initialized) || !frameQueue.empty();
}
bool Connection::isClosed() const {
Mutex::ScopedLock l(frameQueueLock);
return frameQueueClosed;
}
size_t Connection::encode(const char* buffer, size_t size) {
Mutex::ScopedLock l(frameQueueLock);
framing::Buffer out(const_cast<char*>(buffer), size);
if (!isClient && !initialized) {
framing::ProtocolInitiation pi(getVersion());
pi.encode(out);
initialized = true;
QPID_LOG(trace, "SENT " << identifier << " INIT(" << pi << ")");
}
size_t frameSize=0;
while (!frameQueue.empty() && ((frameSize=frameQueue.front().size()) <= out.available())) {
frameQueue.front().encode(out);
QPID_LOG(trace, "SENT [" << identifier << "]: " << frameQueue.front());
frameQueue.pop_front();
buffered -= frameSize;
if (frameQueue.empty() && out.available() > 0) connection->doOutput();
}
assert(frameQueue.empty() || frameQueue.front().size() <= size);
if (!frameQueue.empty() && frameQueue.front().size() > size)
throw InternalErrorException(QPID_MSG("Could not write frame, too large for buffer."));
return out.getPosition();
}
void Connection::activateOutput() { output.activateOutput(); }
void Connection::close() {
// Close the output queue.
Mutex::ScopedLock l(frameQueueLock);
frameQueueClosed = true;
}
void Connection::closed() {
connection->closed();
}
void Connection::send(framing::AMQFrame& f) {
{
Mutex::ScopedLock l(frameQueueLock);
if (!frameQueueClosed)
frameQueue.push_back(f);
buffered += f.size();
}
activateOutput();
}
framing::ProtocolVersion Connection::getVersion() const {
return framing::ProtocolVersion(0,10);
}
size_t Connection::getBuffered() const {
Mutex::ScopedLock l(frameQueueLock);
return buffered;
}
}} // namespace qpid::amqp_0_10
|
