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
|
#include "resourceaccess.h"
#include "common/console.h"
#include "common/commands.h"
#include "common/handshake_generated.h"
#include "common/revisionupdate_generated.h"
#include <QDebug>
#include <QProcess>
ResourceAccess::ResourceAccess(const QString &resourceName, QObject *parent)
: QObject(parent),
m_resourceName(resourceName),
m_socket(new QLocalSocket(this)),
m_tryOpenTimer(new QTimer(this)),
m_startingProcess(false)
{
m_tryOpenTimer->setInterval(50);
m_tryOpenTimer->setSingleShot(true);
connect(m_tryOpenTimer, &QTimer::timeout,
this, &ResourceAccess::open);
log("Starting access");
connect(m_socket, &QLocalSocket::connected,
this, &ResourceAccess::connected);
connect(m_socket, &QLocalSocket::disconnected,
this, &ResourceAccess::disconnected);
connect(m_socket, SIGNAL(error(QLocalSocket::LocalSocketError)),
this, SLOT(connectionError(QLocalSocket::LocalSocketError)));
connect(m_socket, &QIODevice::readyRead,
this, &ResourceAccess::readResourceMessage);
}
ResourceAccess::~ResourceAccess()
{
}
QString ResourceAccess::resourceName() const
{
return m_resourceName;
}
bool ResourceAccess::isReady() const
{
return m_socket->isValid();
}
void ResourceAccess::open()
{
if (m_socket->isValid()) {
log("Socket valid, so aborting the open");
return;
}
m_socket->setServerName(m_resourceName);
log(QString("Opening %1").arg(m_socket->serverName()));
//FIXME: race between starting the exec and opening the socket?
m_socket->open();
}
void ResourceAccess::close()
{
log(QString("Closing %1").arg(m_socket->fullServerName()));
m_socket->close();
}
void ResourceAccess::connected()
{
m_startingProcess = false;
log(QString("Connected: ").arg(m_socket->fullServerName()));
{
flatbuffers::FlatBufferBuilder fbb;
auto name = fbb.CreateString("Client PID: " + QString::number((long long)this).toLatin1() + "!");
auto command = Akonadi::CreateHandshake(fbb, name);
Akonadi::FinishHandshakeBuffer(fbb, command);
const int commandId = Commands::HandshakeCommand;
const int dataSize = fbb.GetSize();
m_socket->write((const char*)&commandId, sizeof(int));
m_socket->write((const char*)&dataSize, sizeof(int));
m_socket->write((const char*)fbb.GetBufferPointer(), dataSize);
}
emit ready(true);
}
void ResourceAccess::disconnected()
{
m_socket->close();
log(QString("Disconnected from %1").arg(m_socket->fullServerName()));
emit ready(false);
open();
}
void ResourceAccess::connectionError(QLocalSocket::LocalSocketError error)
{
log(QString("Connection error: %2").arg(error));
if (m_startingProcess) {
if (!m_tryOpenTimer->isActive()) {
m_tryOpenTimer->start();
}
return;
}
m_startingProcess = true;
log(QString("Attempting to start resource ") + m_resourceName);
QStringList args;
args << m_resourceName;
if (QProcess::startDetached("akonadinext_resource", args)) {
m_socket->open();
}
}
void ResourceAccess::readResourceMessage()
{
if (!m_socket->isValid()) {
return;
}
m_partialMessageBuffer += m_socket->readAll();
// should be scheduled rather than processed all at once
while (processMessageBuffer()) {}
}
bool ResourceAccess::processMessageBuffer()
{
static const int headerSize = (sizeof(int) * 2);
if (m_partialMessageBuffer.size() < headerSize) {
return false;
}
const int commandId = *(int*)m_partialMessageBuffer.constData();
const int size = *(int*)(m_partialMessageBuffer.constData() + sizeof(int));
if (size > m_partialMessageBuffer.size() - headerSize) {
return false;
}
switch (commandId) {
case Commands::RevisionUpdateCommand: {
auto buffer = Akonadi::GetRevisionUpdate(m_partialMessageBuffer.constData() + headerSize);
log(QString("Revision updated to: %1").arg(buffer->revision()));
emit revisionChanged(buffer->revision());
break;
}
default:
break;
}
m_partialMessageBuffer.remove(0, headerSize + size);
return m_partialMessageBuffer.size() >= headerSize;
}
void ResourceAccess::log(const QString &message)
{
Console::main()->log(m_resourceName + ": " + message);
}
|
