1 /***************************************************************************
2 * Copyright (C) 2005-2019 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 * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. *
19 ***************************************************************************/
21 #include "abstractsqlstorage.h"
23 #include <QMutexLocker>
31 int AbstractSqlStorage::_nextConnectionId = 0;
32 AbstractSqlStorage::AbstractSqlStorage(QObject* parent)
36 AbstractSqlStorage::~AbstractSqlStorage()
38 // disconnect the connections, so their deletion is no longer interessting for us
39 QHash<QThread*, Connection*>::iterator conIter;
40 for (conIter = _connectionPool.begin(); conIter != _connectionPool.end(); ++conIter) {
41 QSqlDatabase::removeDatabase(conIter.value()->name());
42 disconnect(conIter.value(), nullptr, this, nullptr);
46 QSqlDatabase AbstractSqlStorage::logDb()
48 if (!_connectionPool.contains(QThread::currentThread()))
49 addConnectionToPool();
51 QSqlDatabase db = QSqlDatabase::database(_connectionPool[QThread::currentThread()]->name(), false);
54 qWarning() << "Database connection" << displayName() << "for thread" << QThread::currentThread()
55 << "was lost, attempting to reconnect...";
62 void AbstractSqlStorage::addConnectionToPool()
64 QMutexLocker locker(&_connectionPoolMutex);
65 // we have to recheck if the connection pool already contains a connection for
66 // this thread. Since now (after the lock) we can only tell for sure
67 if (_connectionPool.contains(QThread::currentThread()))
70 QThread* currentThread = QThread::currentThread();
72 int connectionId = _nextConnectionId++;
74 Connection* connection = new Connection(QLatin1String(QString("quassel_%1_con_%2").arg(driverName()).arg(connectionId).toLatin1()));
75 connection->moveToThread(currentThread);
76 connect(this, &QObject::destroyed, connection, &QObject::deleteLater);
77 connect(currentThread, &QObject::destroyed, connection, &QObject::deleteLater);
78 connect(connection, &QObject::destroyed, this, &AbstractSqlStorage::connectionDestroyed);
79 _connectionPool[currentThread] = connection;
81 QSqlDatabase db = QSqlDatabase::addDatabase(driverName(), connection->name());
82 db.setDatabaseName(databaseName());
84 if (!hostName().isEmpty())
85 db.setHostName(hostName());
90 if (!userName().isEmpty()) {
91 db.setUserName(userName());
92 db.setPassword(password());
98 void AbstractSqlStorage::dbConnect(QSqlDatabase& db)
101 qWarning() << "Unable to open database" << displayName() << "for thread" << QThread::currentThread();
102 qWarning() << "-" << db.lastError().text();
105 if (!initDbSession(db)) {
106 qWarning() << "Unable to initialize database" << displayName() << "for thread" << QThread::currentThread();
112 Storage::State AbstractSqlStorage::init(const QVariantMap& settings, const QProcessEnvironment& environment, bool loadFromEnvironment)
114 setConnectionProperties(settings, environment, loadFromEnvironment);
116 _debug = Quassel::isOptionSet("debug");
118 QSqlDatabase db = logDb();
119 if (!db.isValid() || !db.isOpen())
122 if (installedSchemaVersion() == -1) {
123 qCritical() << "Storage Schema is missing!";
127 if (installedSchemaVersion() > schemaVersion()) {
128 qCritical() << "Installed Schema is newer then any known Version.";
132 if (installedSchemaVersion() < schemaVersion()) {
133 qInfo() << qPrintable(tr("Installed database schema (version %1) is not up to date. Upgrading to "
134 "version %2... This may take a while for major upgrades.")
135 .arg(installedSchemaVersion())
136 .arg(schemaVersion()));
137 emit dbUpgradeInProgress(true);
138 auto upgradeResult = upgradeDb();
139 emit dbUpgradeInProgress(false);
140 if (!upgradeResult) {
141 qWarning() << qPrintable(tr("Upgrade failed..."));
144 // Add a message when migration succeeds to avoid confusing folks by implying the schema upgrade failed if
145 // later functionality does not work.
146 qInfo() << qPrintable(tr("Installed database schema successfully upgraded to version %1.").arg(schemaVersion()));
149 qInfo() << qPrintable(displayName()) << "storage backend is ready. Schema version:" << installedSchemaVersion();
153 QString AbstractSqlStorage::queryString(const QString& queryName, int version)
157 // The current schema is stored in the root folder, while upgrade queries are stored in the
158 // 'versions/##' subfolders.
160 // Use the current SQL schema, not a versioned request
161 queryInfo = QFileInfo(QString(":/SQL/%1/%2.sql").arg(displayName()).arg(queryName));
162 // If version is needed later, get it via version = schemaVersion();
165 // Use the specified schema version, not the general folder
166 queryInfo = QFileInfo(QString(":/SQL/%1/version/%2/%3.sql").arg(displayName()).arg(version).arg(queryName));
169 if (!queryInfo.exists() || !queryInfo.isFile() || !queryInfo.isReadable()) {
170 qCritical() << "Unable to read SQL-Query" << queryName << "for engine" << displayName();
174 QFile queryFile(queryInfo.filePath());
175 if (!queryFile.open(QIODevice::ReadOnly | QIODevice::Text))
177 QString query = QTextStream(&queryFile).readAll();
180 return query.trimmed();
183 QList<AbstractSqlStorage::SqlQueryResource> AbstractSqlStorage::setupQueries()
185 QList<SqlQueryResource> queries;
186 // The current schema is stored in the root folder, including setup scripts.
187 QDir dir = QDir(QString(":/SQL/%1/").arg(displayName()));
188 foreach (QFileInfo fileInfo, dir.entryInfoList(QStringList() << "setup*", QDir::NoFilter, QDir::Name)) {
189 queries << SqlQueryResource(queryString(fileInfo.baseName()), fileInfo.baseName());
194 bool AbstractSqlStorage::setup(const QVariantMap& settings, const QProcessEnvironment& environment, bool loadFromEnvironment)
196 setConnectionProperties(settings, environment, loadFromEnvironment);
197 QSqlDatabase db = logDb();
199 qCritical() << "Unable to setup Logging Backend!";
204 foreach (auto queryResource, setupQueries()) {
205 QSqlQuery query = db.exec(queryResource.queryString);
206 if (!watchQuery(query)) {
207 qCritical() << qPrintable(QString("Unable to setup Logging Backend! Setup query failed (step: %1).")
208 .arg(queryResource.queryFilename));
213 bool success = setupSchemaVersion(schemaVersion());
221 QList<AbstractSqlStorage::SqlQueryResource> AbstractSqlStorage::upgradeQueries(int version)
223 QList<SqlQueryResource> queries;
224 // Upgrade queries are stored in the 'version/##' subfolders.
225 QDir dir = QDir(QString(":/SQL/%1/version/%2/").arg(displayName()).arg(version));
226 foreach (QFileInfo fileInfo, dir.entryInfoList(QStringList() << "upgrade*", QDir::NoFilter, QDir::Name)) {
227 queries << SqlQueryResource(queryString(fileInfo.baseName(), version), fileInfo.baseName());
232 bool AbstractSqlStorage::upgradeDb()
234 if (schemaVersion() <= installedSchemaVersion())
237 QSqlDatabase db = logDb();
239 // TODO: For databases that support it (e.g. almost only PostgreSQL), wrap upgrades in a
240 // transaction. This will need careful testing of potential additional space requirements and
241 // any database modifications that might not be allowed in a transaction.
243 // Check if we're resuming an interrupted multi-step upgrade: is an upgrade step stored?
244 const QString previousLaunchUpgradeStep = schemaVersionUpgradeStep();
245 bool resumingUpgrade = !previousLaunchUpgradeStep.isEmpty();
247 for (int ver = installedSchemaVersion() + 1; ver <= schemaVersion(); ver++) {
248 foreach (auto queryResource, upgradeQueries(ver)) {
249 if (resumingUpgrade) {
250 // An upgrade was interrupted. Check if this matches the the last successful query.
251 if (previousLaunchUpgradeStep == queryResource.queryFilename) {
252 // Found the matching query!
253 qInfo() << qPrintable(QString("Resuming interrupted upgrade for schema version %1 (last step: %2)")
254 .arg(QString::number(ver), previousLaunchUpgradeStep));
256 // Stop searching for queries
257 resumingUpgrade = false;
258 // Continue past the previous query with the next not-yet-tried query
262 // Not yet matched, keep looking
267 // Run the upgrade query
268 QSqlQuery query = db.exec(queryResource.queryString);
269 if (!watchQuery(query)) {
270 // Individual upgrade query failed, bail out
271 qCritical() << qPrintable(QString("Unable to upgrade Logging Backend! Upgrade query in schema version %1 failed (step: %2).")
272 .arg(QString::number(ver), queryResource.queryFilename));
276 // Mark as successful
277 setSchemaVersionUpgradeStep(queryResource.queryFilename);
281 if (resumingUpgrade) {
282 // Something went wrong and the last successful SQL query to resume from couldn't be
284 // 1. The storage of successful query glitched, or the database was manually changed
285 // 2. Quassel changed the filenames of upgrade queries, and the local Quassel core
286 // version was replaced during an interrupted schema upgrade
288 // Both are unlikely, but it's a good idea to handle it anyways.
290 qCritical() << qPrintable(QString("Unable to resume interrupted upgrade in Logging "
291 "Backend! Missing upgrade step in schema version %1 "
292 "(expected step: %2)")
293 .arg(QString::number(ver), previousLaunchUpgradeStep));
297 // Update the schema version for each intermediate step and mark the step as done. This
298 // ensures that any interrupted upgrades have a greater chance of resuming correctly after
301 // Almost all databases make single queries atomic (fully works or fully fails, no partial),
302 // and with many of the longest migrations being a single query, this makes upgrade
303 // interruptions much more likely to leave the database in a valid intermediate schema
305 if (!updateSchemaVersion(ver, true)) {
306 // Updating the schema version failed, bail out
307 qCritical() << "Unable to upgrade Logging Backend! Setting schema version" << ver << "failed.";
312 // If we made it here, everything seems to have worked!
316 int AbstractSqlStorage::schemaVersion()
318 // returns the newest Schema Version!
319 // not the currently used one! (though it can be the same)
320 if (_schemaVersion > 0)
321 return _schemaVersion;
325 // Schema versions are stored in the 'version/##' subfolders.
326 QDir dir = QDir(QString(":/SQL/%1/version/").arg(displayName()));
327 foreach (QFileInfo fileInfo, dir.entryInfoList()) {
328 if (!fileInfo.isDir())
331 version = fileInfo.fileName().toInt(&ok);
335 if (version > _schemaVersion)
336 _schemaVersion = version;
338 return _schemaVersion;
342 QString AbstractSqlStorage::schemaVersionUpgradeStep()
344 // By default, assume there's no pending upgrade
349 bool AbstractSqlStorage::watchQuery(QSqlQuery& query)
351 bool queryError = query.lastError().isValid();
352 if (queryError || _debug) {
354 qCritical() << "unhandled Error in QSqlQuery!";
355 qCritical() << " last Query:\n" << qPrintable(query.lastQuery());
356 qCritical() << " executed Query:\n" << qPrintable(query.executedQuery());
357 QVariantMap boundValues = query.boundValues();
358 QStringList valueStrings;
359 QVariantMap::const_iterator iter;
360 for (iter = boundValues.constBegin(); iter != boundValues.constEnd(); ++iter) {
363 if (query.driver()) {
364 // let the driver do the formatting
365 field.setType(iter.value().type());
366 if (iter.value().isNull())
369 field.setValue(iter.value());
370 value = query.driver()->formatValue(field);
373 switch (iter.value().type()) {
374 case QVariant::Invalid:
378 value = iter.value().toString();
381 value = QString("'%1'").arg(iter.value().toString());
384 valueStrings << QString("%1=%2").arg(iter.key(), value);
386 qCritical() << " bound Values:" << qPrintable(valueStrings.join(", "));
387 qCritical() << " Error Number:" << query.lastError().number();
388 qCritical() << " Error Message:" << qPrintable(query.lastError().text());
389 qCritical() << " Driver Message:" << qPrintable(query.lastError().driverText());
390 qCritical() << " DB Message:" << qPrintable(query.lastError().databaseText());
397 void AbstractSqlStorage::connectionDestroyed()
399 QMutexLocker locker(&_connectionPoolMutex);
400 _connectionPool.remove(sender()->thread());
403 // ========================================
404 // AbstractSqlStorage::Connection
405 // ========================================
406 AbstractSqlStorage::Connection::Connection(const QString& name, QObject* parent)
408 , _name(name.toLatin1())
411 AbstractSqlStorage::Connection::~Connection()
414 QSqlDatabase db = QSqlDatabase::database(name(), false);
420 QSqlDatabase::removeDatabase(name());
423 // ========================================
424 // AbstractSqlMigrator
425 // ========================================
427 void AbstractSqlMigrator::newQuery(const QString& query, QSqlDatabase db)
430 _query = new QSqlQuery(db);
431 _query->prepare(query);
434 void AbstractSqlMigrator::resetQuery()
440 bool AbstractSqlMigrator::exec()
444 return !_query->lastError().isValid();
447 QString AbstractSqlMigrator::migrationObject(MigrationObject moType)
451 return "QuasselUser";
457 return "IdentityNick";
467 return "UserSetting";
474 QVariantList AbstractSqlMigrator::boundValues()
480 int numValues = _query->boundValues().count();
481 for (int i = 0; i < numValues; i++) {
482 values << _query->boundValue(i);
487 void AbstractSqlMigrator::dumpStatus()
489 qWarning() << " executed Query:";
490 qWarning() << qPrintable(executedQuery());
491 qWarning() << " bound Values:";
492 QList<QVariant> list = boundValues();
493 for (int i = 0; i < list.size(); ++i)
494 qWarning() << i << ": " << list.at(i).toString().toLatin1().data();
495 qWarning() << " Error Number:" << lastError().number();
496 qWarning() << " Error Message:" << lastError().text();
499 // ========================================
500 // AbstractSqlMigrationReader
501 // ========================================
502 AbstractSqlMigrationReader::AbstractSqlMigrationReader()
503 : AbstractSqlMigrator()
506 bool AbstractSqlMigrationReader::migrateTo(AbstractSqlMigrationWriter* writer)
508 if (!transaction()) {
509 qWarning() << "AbstractSqlMigrationReader::migrateTo(): unable to start reader's transaction!";
512 if (!writer->transaction()) {
513 qWarning() << "AbstractSqlMigrationReader::migrateTo(): unable to start writer's transaction!";
514 rollback(); // close the reader transaction;
520 // due to the incompatibility across Migration objects we can't run this in a loop... :/
521 QuasselUserMO quasselUserMo;
522 if (!transferMo(QuasselUser, quasselUserMo))
525 IdentityMO identityMo;
526 if (!transferMo(Identity, identityMo))
529 IdentityNickMO identityNickMo;
530 if (!transferMo(IdentityNick, identityNickMo))
534 if (!transferMo(Network, networkMo))
538 if (!transferMo(Buffer, bufferMo))
542 if (!transferMo(Sender, senderMo))
546 if (!transferMo(Backlog, backlogMo))
549 IrcServerMO ircServerMo;
550 if (!transferMo(IrcServer, ircServerMo))
553 UserSettingMO userSettingMo;
554 if (!transferMo(UserSetting, userSettingMo))
557 CoreStateMO coreStateMO;
558 if (!transferMo(CoreState, coreStateMO))
561 if (!_writer->postProcess())
563 return finalizeMigration();
566 void AbstractSqlMigrationReader::abortMigration(const QString& errorMsg)
568 qWarning() << "Migration Failed!";
569 if (!errorMsg.isNull()) {
570 qWarning() << qPrintable(errorMsg);
572 if (lastError().isValid()) {
573 qWarning() << "ReaderError:";
577 if (_writer->lastError().isValid()) {
578 qWarning() << "WriterError:";
579 _writer->dumpStatus();
587 bool AbstractSqlMigrationReader::finalizeMigration()
590 _writer->resetQuery();
593 if (!_writer->commit()) {
602 bool AbstractSqlMigrationReader::transferMo(MigrationObject moType, T& mo)
605 _writer->resetQuery();
607 if (!prepareQuery(moType)) {
608 abortMigration(QString("AbstractSqlMigrationReader::migrateTo(): unable to prepare reader query of type %1!")
609 .arg(AbstractSqlMigrator::migrationObject(moType)));
612 if (!_writer->prepareQuery(moType)) {
613 abortMigration(QString("AbstractSqlMigrationReader::migrateTo(): unable to prepare writer query of type %1!")
614 .arg(AbstractSqlMigrator::migrationObject(moType)));
618 qDebug() << qPrintable(QString("Transferring %1...").arg(AbstractSqlMigrator::migrationObject(moType)));
621 file.open(stdout, QIODevice::WriteOnly);
624 if (!_writer->writeMo(mo)) {
625 abortMigration(QString("AbstractSqlMigrationReader::transferMo(): unable to transfer Migratable Object of type %1!")
626 .arg(AbstractSqlMigrator::migrationObject(moType)));
644 uint qHash(const SenderData& key)
646 return qHash(QString(key.sender + "\n" + key.realname + "\n" + key.avatarurl));
649 bool operator==(const SenderData& a, const SenderData& b)
651 return a.sender == b.sender && a.realname == b.realname && a.avatarurl == b.avatarurl;