+/***************************************************************************
+ * Copyright (C) 2005-07 by the Quassel IRC Team *
+ * devel@quassel-irc.org *
+ * *
+ * This program is free software; you can redistribute it and/or modify *
+ * it under the terms of the GNU General Public License as published by *
+ * the Free Software Foundation; either version 2 of the License, or *
+ * (at your option) version 3. *
+ * *
+ * This program is distributed in the hope that it will be useful, *
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of *
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
+ * GNU General Public License for more details. *
+ * *
+ * You should have received a copy of the GNU General Public License *
+ * along with this program; if not, write to the *
+ * Free Software Foundation, Inc., *
+ * 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. *
+ ***************************************************************************/
+
+#include "abstractsqlstorage.h"
+
+#include <QSqlError>
+#include <QSqlQuery>
+
+AbstractSqlStorage::AbstractSqlStorage(QObject *parent)
+ : Storage(parent),
+ _schemaVersion(0)
+{
+}
+
+AbstractSqlStorage::~AbstractSqlStorage() {
+ {
+ QSqlDatabase db = QSqlDatabase::database("quassel_connection");
+ db.commit();
+ db.close();
+ }
+ QSqlDatabase::removeDatabase("quassel_connection");
+}
+
+QSqlDatabase AbstractSqlStorage::logDb() {
+ QSqlDatabase db = QSqlDatabase::database("quassel_connection");
+ if(db.isValid() && db.isOpen())
+ return db;
+
+ if(!openDb()) {
+ qWarning() << "Unable to Open Database" << engineName();
+ qWarning() << " -" << db.lastError().text();
+ }
+
+ return QSqlDatabase::database("quassel_connection");
+}
+
+bool AbstractSqlStorage::openDb() {
+ QSqlDatabase db = QSqlDatabase::database("quassel_connection");
+ if(db.isValid() && !db.isOpen())
+ return db.open();
+
+ db = QSqlDatabase::addDatabase(driverName(), "quassel_connection");
+ db.setDatabaseName(databaseName());
+
+ if(!hostName().isEmpty())
+ db.setHostName(hostName());
+
+ if(!userName().isEmpty()) {
+ db.setUserName(userName());
+ db.setPassword(password());
+ }
+
+ return db.open();
+}
+
+bool AbstractSqlStorage::init(const QVariantMap &settings) {
+ Q_UNUSED(settings)
+ QSqlDatabase db = logDb();
+ if(!db.isValid() || !db.isOpen())
+ return false;
+
+ if(installedSchemaVersion() == -1) {
+ qDebug() << "Storage Schema is missing!";
+ return false;
+ }
+
+ if(installedSchemaVersion() > schemaVersion()) {
+ qWarning() << "Installed Schema is newer then any known Version.";
+ return false;
+ }
+
+ if(installedSchemaVersion() < schemaVersion()) {
+ qWarning() << "Installed Schema is not up to date. Upgrading...";
+ if(!upgradeDb())
+ return false;
+ }
+
+ qDebug() << "Storage Backend is ready. Quassel Schema Version:" << installedSchemaVersion();
+ return true;
+}
+
+QString AbstractSqlStorage::queryString(const QString &queryName, int version) {
+ if(version == 0)
+ version = schemaVersion();
+
+ QFileInfo queryInfo(QString(":/SQL/%1/%2/%3.sql").arg(engineName()).arg(version).arg(queryName));
+ if(!queryInfo.exists() || !queryInfo.isFile() || !queryInfo.isReadable()) {
+ qWarning() << "Unable to read SQL-Query" << queryName << "for Engine" << engineName();
+ return QString();
+ }
+
+ QFile queryFile(queryInfo.filePath());
+ if(!queryFile.open(QIODevice::ReadOnly | QIODevice::Text))
+ return QString();
+ QString query = QTextStream(&queryFile).readAll();
+ queryFile.close();
+
+ return query.trimmed();
+}
+
+QString AbstractSqlStorage::queryString(const QString &queryName) {
+ return queryString(queryName, 0);
+}
+
+QSqlQuery *AbstractSqlStorage::cachedQuery(const QString &queryName, int version) {
+ QPair<QString, int> queryId = qMakePair(queryName, version);
+ if(!_queryCache.contains(queryId)) {
+ QSqlQuery *query = new QSqlQuery(logDb());
+ query->prepare(queryString(queryName, version));
+ _queryCache[queryId] = query;
+ }
+
+ return _queryCache[queryId];
+}
+
+QSqlQuery *AbstractSqlStorage::cachedQuery(const QString &queryName) {
+ return cachedQuery(queryName, 0);
+}
+
+QStringList AbstractSqlStorage::setupQueries() {
+ QStringList queries;
+ QDir dir = QDir(QString(":/SQL/%1/%2/").arg(engineName()).arg(schemaVersion()));
+ foreach(QFileInfo fileInfo, dir.entryInfoList(QStringList() << "setup*", QDir::NoFilter, QDir::Name)) {
+ queries << queryString(fileInfo.baseName());
+ }
+ return queries;
+}
+
+bool AbstractSqlStorage::setup(const QVariantMap &settings) {
+ Q_UNUSED(settings)
+ QSqlDatabase db = logDb();
+ if(!db.isOpen()) {
+ qWarning() << "Unable to setup Logging Backend!";
+ return false;
+ }
+
+ foreach(QString queryString, setupQueries()) {
+ QSqlQuery query = db.exec(queryString);
+ if(!watchQuery(&query)) {
+ qWarning() << "Unable to setup Logging Backend!";
+ return false;
+ }
+ }
+ return true;
+}
+
+QStringList AbstractSqlStorage::upgradeQueries(int version) {
+ QStringList queries;
+ QDir dir = QDir(QString(":/SQL/%1/%2/").arg(engineName()).arg(version));
+ foreach(QFileInfo fileInfo, dir.entryInfoList(QStringList() << "upgrade*", QDir::NoFilter, QDir::Name)) {
+ qDebug() << queryString(fileInfo.baseName());
+ queries << queryString(fileInfo.baseName());
+ }
+ return queries;
+}
+
+bool AbstractSqlStorage::upgradeDb() {
+ if(schemaVersion() <= installedSchemaVersion())
+ return true;
+
+ QSqlDatabase db = logDb();
+
+ for(int ver = installedSchemaVersion() + 1; ver <= schemaVersion(); ver++) {
+ foreach(QString queryString, upgradeQueries(ver)) {
+ QSqlQuery query = db.exec(queryString);
+ if(!watchQuery(&query)) {
+ qWarning() << "Unable to upgrade Logging Backend!";
+ return false;
+ }
+ }
+ }
+ return true;
+}
+
+
+int AbstractSqlStorage::schemaVersion() {
+ // returns the newest Schema Version!
+ // not the currently used one! (though it can be the same)
+ if(_schemaVersion > 0)
+ return _schemaVersion;
+
+ int version;
+ bool ok;
+ QDir dir = QDir(":/SQL/" + engineName());
+ foreach(QFileInfo fileInfo, dir.entryInfoList()) {
+ if(!fileInfo.isDir())
+ continue;
+
+ version = fileInfo.fileName().toInt(&ok);
+ if(!ok)
+ continue;
+
+ if(version > _schemaVersion)
+ _schemaVersion = version;
+ }
+ return _schemaVersion;
+}
+
+bool AbstractSqlStorage::watchQuery(QSqlQuery *query) {
+ if(query->lastError().isValid()) {
+ qWarning() << "unhandled Error in QSqlQuery!";
+ qWarning() << " last Query:" << query->lastQuery();
+ qWarning() << " executed Query:" << query->executedQuery();
+ qWarning() << " bound Values:" << query->boundValues();
+ qWarning() << " Error Number:" << query->lastError().number();
+ qWarning() << " Error Message:" << query->lastError().text();
+ qWarning() << " Driver Message:" << query->lastError().driverText();
+ qWarning() << " DB Message:" << query->lastError().databaseText();
+
+ return false;
+ }
+ return true;
+}