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
|
/*
*
* 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 "Cluster.h"
#include "qpid/framing/AMQFrame.h"
#include "qpid/framing/ClusterConnectionDeliverCloseBody.h"
#include "qpid/log/Statement.h"
#include "qpid/framing/AllInvoker.h"
#include <boost/current_function.hpp>
namespace qpid {
namespace cluster {
using namespace framing;
// Shadow connections
Connection::Connection(Cluster& c, sys::ConnectionOutputHandler& out,
const std::string& wrappedId, ConnectionId myId)
: cluster(c), self(myId), catchUp(false), output(*this, out),
connection(&output, cluster.getBroker(), wrappedId)
{
QPID_LOG(debug, "New connection: " << *this);
}
// Local connections
Connection::Connection(Cluster& c, sys::ConnectionOutputHandler& out,
const std::string& wrappedId, MemberId myId, bool isCatchUp)
: cluster(c), self(myId, this), catchUp(isCatchUp), output(*this, out),
connection(&output, cluster.getBroker(), wrappedId)
{
QPID_LOG(debug, "New connection: " << *this);
}
Connection::~Connection() {}
bool Connection::doOutput() {
return output.doOutput();
}
// Delivery of doOutput allows us to run the real connection doOutput()
// which stocks up the write buffers with data.
//
void Connection::deliverDoOutput(uint32_t requested) {
assert(!catchUp);
output.deliverDoOutput(requested);
}
void Connection::received(framing::AMQFrame& f) {
QPID_LOG(trace, "EXEC [" << *this << "]: " << f);
// Handle connection controls, deliver other frames to connection.
if (!framing::invoke(*this, *f.getBody()).wasHandled())
connection.received(f);
}
void Connection::closed() {
try {
// Local network connection has closed. We need to keep the
// connection around but replace the output handler with a
// no-op handler as the network output handler will be
// deleted.
output.setOutputHandler(discardHandler);
if (catchUp) {
catchUp = false;
cluster.catchUpClosed(boost::intrusive_ptr<Connection>(this));
}
else {
// This was a local replicated connection. Multicast a deliver closed
// and process any outstanding frames from the cluster until
// self-delivery of deliver-closed.
cluster.mcastControl(ClusterConnectionDeliverCloseBody(), this);
++mcastSeq;
}
}
catch (const std::exception& e) {
QPID_LOG(error, QPID_MSG("While closing connection: " << e.what()));
}
}
void Connection::deliverClose () {
assert(!catchUp);
connection.closed();
cluster.erase(self);
}
size_t Connection::decode(const char* buffer, size_t size) {
assert(!catchUp);
++mcastSeq;
cluster.mcastBuffer(buffer, size, self);
return size;
}
void Connection::deliverBuffer(Buffer& buf) {
assert(!catchUp);
++deliverSeq;
while (decoder.decode(buf))
received(decoder.frame);
}
void Connection::sessionState(const SequenceNumber& /*replayStart*/,
const SequenceSet& /*sentIncomplete*/,
const SequenceNumber& /*expected*/,
const SequenceNumber& /*received*/,
const SequenceSet& /*unknownCompleted*/,
const SequenceSet& /*receivedIncomplete*/)
{
// FIXME aconway 2008-09-10: TODO
}
void Connection::shadowReady(uint64_t memberId, uint64_t connectionId) {
ConnectionId shadow = ConnectionId(memberId, connectionId);
QPID_LOG(debug, "Catch-up connection " << self << " becomes shadow " << shadow);
self = shadow;
assert(isShadow());
}
void Connection::dumpComplete() {
// FIXME aconway 2008-09-18: use or remove.
}
bool Connection::isLocal() const { return self.first == cluster.getSelf() && self.second == this; }
std::ostream& operator<<(std::ostream& o, const Connection& c) {
return o << c.getId() << "(" << (c.isLocal() ? "local" : "shadow")
<< (c.isCatchUp() ? ",catchup" : "") << ")";
}
}} // namespace qpid::cluster
|
