1 /***************************************************************************
2 * Copyright (C) 2005-07 by the Quassel Project *
3 * devel@quassel-irc.org *
5 * This program is free software; you can redistribute it and/or modify *
6 * it under the terms of the GNU General Public License as published by *
7 * the Free Software Foundation; either version 2 of the License, or *
8 * (at your option) version 3. *
10 * This program is distributed in the hope that it will be useful, *
11 * but WITHOUT ANY WARRANTY; without even the implied warranty of *
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
13 * GNU General Public License for more details. *
15 * You should have received a copy of the GNU General Public License *
16 * along with this program; if not, write to the *
17 * Free Software Foundation, Inc., *
18 * 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. *
19 ***************************************************************************/
21 #include "abstractsqlstorage.h"
25 #include <QMutexLocker>
29 AbstractSqlStorage::AbstractSqlStorage(QObject *parent)
36 AbstractSqlStorage::~AbstractSqlStorage() {
37 // disconnect the connections, so their deletion is no longer interessting for us
38 QHash<QThread *, Connection *>::iterator conIter;
39 for(conIter = _connectionPool.begin(); conIter != _connectionPool.end(); conIter++) {
40 disconnect(conIter.value(), 0, this, 0);
44 QSqlDatabase AbstractSqlStorage::logDb() {
45 if(!_connectionPool.contains(QThread::currentThread()))
46 addConnectionToPool();
48 return QSqlDatabase::database(_connectionPool[QThread::currentThread()]->name());
51 void AbstractSqlStorage::addConnectionToPool() {
52 QMutexLocker locker(&_connectionPoolMutex);
53 // we have to recheck if the connection pool already contains a connection for
54 // this thread. Since now (after the lock) we can only tell for sure
55 if(_connectionPool.contains(QThread::currentThread()))
58 QThread *currentThread = QThread::currentThread();
60 int connectionId = _nextConnectionId++;
62 Connection *connection = new Connection(QLatin1String(QString("quassel_connection_%1").arg(connectionId).toLatin1()));
63 connection->moveToThread(currentThread);
64 connect(this, SIGNAL(destroyed()), connection, SLOT(deleteLater()));
65 connect(currentThread, SIGNAL(destroyed()), connection, SLOT(deleteLater()));
66 connect(connection, SIGNAL(destroyed()), this, SLOT(connectionDestroyed()));
67 _connectionPool[currentThread] = connection;
69 QSqlDatabase db = QSqlDatabase::addDatabase(driverName(), connection->name());
70 db.setDatabaseName(databaseName());
72 if(!hostName().isEmpty())
73 db.setHostName(hostName());
75 if(!userName().isEmpty()) {
76 db.setUserName(userName());
77 db.setPassword(password());
81 qWarning() << "Unable to open database" << displayName() << "for thread" << QThread::currentThread();
82 qWarning() << "-" << db.lastError().text();
86 Storage::State AbstractSqlStorage::init(const QVariantMap &settings) {
89 QSqlDatabase db = logDb();
90 if(!db.isValid() || !db.isOpen())
93 if(installedSchemaVersion() == -1) {
94 qCritical() << "Storage Schema is missing!";
98 if(installedSchemaVersion() > schemaVersion()) {
99 qCritical() << "Installed Schema is newer then any known Version.";
103 if(installedSchemaVersion() < schemaVersion()) {
104 qWarning() << qPrintable(tr("Installed Schema (version %1) is not up to date. Upgrading to version %2...").arg(installedSchemaVersion()).arg(schemaVersion()));
106 qWarning() << qPrintable(tr("Upgrade failed..."));
111 quInfo() << "Storage Backend is ready. Quassel Schema Version:" << installedSchemaVersion();
115 QString AbstractSqlStorage::queryString(const QString &queryName, int version) {
117 version = schemaVersion();
119 QFileInfo queryInfo(QString(":/SQL/%1/%2/%3.sql").arg(displayName()).arg(version).arg(queryName));
120 if(!queryInfo.exists() || !queryInfo.isFile() || !queryInfo.isReadable()) {
121 qCritical() << "Unable to read SQL-Query" << queryName << "for engine" << displayName();
125 QFile queryFile(queryInfo.filePath());
126 if(!queryFile.open(QIODevice::ReadOnly | QIODevice::Text))
128 QString query = QTextStream(&queryFile).readAll();
131 return query.trimmed();
134 QStringList AbstractSqlStorage::setupQueries() {
136 QDir dir = QDir(QString(":/SQL/%1/%2/").arg(displayName()).arg(schemaVersion()));
137 foreach(QFileInfo fileInfo, dir.entryInfoList(QStringList() << "setup*", QDir::NoFilter, QDir::Name)) {
138 queries << queryString(fileInfo.baseName());
143 bool AbstractSqlStorage::setup(const QVariantMap &settings) {
145 QSqlDatabase db = logDb();
147 qCritical() << "Unable to setup Logging Backend!";
151 foreach(QString queryString, setupQueries()) {
152 QSqlQuery query = db.exec(queryString);
153 if(!watchQuery(query)) {
154 qCritical() << "Unable to setup Logging Backend!";
158 return setupSchemaVersion(schemaVersion());
161 QStringList AbstractSqlStorage::upgradeQueries(int version) {
163 QDir dir = QDir(QString(":/SQL/%1/%2/").arg(displayName()).arg(version));
164 foreach(QFileInfo fileInfo, dir.entryInfoList(QStringList() << "upgrade*", QDir::NoFilter, QDir::Name)) {
165 queries << queryString(fileInfo.baseName(), version);
170 bool AbstractSqlStorage::upgradeDb() {
171 if(schemaVersion() <= installedSchemaVersion())
174 QSqlDatabase db = logDb();
176 for(int ver = installedSchemaVersion() + 1; ver <= schemaVersion(); ver++) {
177 foreach(QString queryString, upgradeQueries(ver)) {
178 QSqlQuery query = db.exec(queryString);
179 if(!watchQuery(query)) {
180 qCritical() << "Unable to upgrade Logging Backend!";
185 return updateSchemaVersion(schemaVersion());
189 int AbstractSqlStorage::schemaVersion() {
190 // returns the newest Schema Version!
191 // not the currently used one! (though it can be the same)
192 if(_schemaVersion > 0)
193 return _schemaVersion;
197 QDir dir = QDir(":/SQL/" + displayName());
198 foreach(QFileInfo fileInfo, dir.entryInfoList()) {
199 if(!fileInfo.isDir())
202 version = fileInfo.fileName().toInt(&ok);
206 if(version > _schemaVersion)
207 _schemaVersion = version;
209 return _schemaVersion;
212 bool AbstractSqlStorage::watchQuery(QSqlQuery &query) {
213 if(query.lastError().isValid()) {
214 qCritical() << "unhandled Error in QSqlQuery!";
215 qCritical() << " last Query:\n" << query.lastQuery();
216 qCritical() << " executed Query:\n" << query.executedQuery();
217 qCritical() << " bound Values:";
218 QList<QVariant> list = query.boundValues().values();
219 for (int i = 0; i < list.size(); ++i)
220 qCritical() << i << ": " << list.at(i).toString().toAscii().data();
221 qCritical() << " Error Number:" << query.lastError().number();
222 qCritical() << " Error Message:" << query.lastError().text();
223 qCritical() << " Driver Message:" << query.lastError().driverText();
224 qCritical() << " DB Message:" << query.lastError().databaseText();
231 void AbstractSqlStorage::connectionDestroyed() {
232 QMutexLocker locker(&_connectionPoolMutex);
233 _connectionPool.remove(sender()->thread());
236 // ========================================
237 // AbstractSqlStorage::Connection
238 // ========================================
239 AbstractSqlStorage::Connection::Connection(const QString &name, QObject *parent)
241 _name(name.toLatin1())
245 AbstractSqlStorage::Connection::~Connection() {
247 QSqlDatabase db = QSqlDatabase::database(name(), false);
253 QSqlDatabase::removeDatabase(name());