void
DatabaseImpl::dumpDatabase()
{
QFile dump( "dbdump.txt" );
if ( !dump.open( QIODevice::WriteOnly | QIODevice::Text ) )
{
tDebug() << "Couldn't open dbdump.txt for writing!";
Q_ASSERT( false );
}
else
{
QTextStream dumpout( &dump );
TomahawkSqlQuery query = newquery();
query.exec( "SELECT * FROM oplog" );
while ( query.next() )
{
dumpout << "ID: " << query.value( 0 ).toInt() << endl
<< "GUID: " << query.value( 2 ).toString() << endl
<< "Command: " << query.value( 3 ).toString() << endl
<< "Singleton: " << query.value( 4 ).toBool() << endl
<< "JSON: " << ( query.value( 5 ).toBool() ? qUncompress( query.value( 6 ).toByteArray() ) : query.value( 6 ).toByteArray() )
<< endl << endl << endl;
}
}
}
void
DatabaseImpl::init()
{
m_lastartid = m_lastalbid = m_lasttrkid = 0;
TomahawkSqlQuery query = newquery();
// make sqlite behave how we want:
query.exec( "PRAGMA foreign_keys = ON" );
}
DatabaseImpl::DatabaseImpl( const QString& dbname, Database* parent )
: QObject( (QObject*) parent )
, m_lastartid( 0 )
, m_lastalbid( 0 )
, m_lasttrkid( 0 )
{
QTime t;
t.start();
bool schemaUpdated = openDatabase( dbname );
tDebug( LOGVERBOSE ) << "Opened database:" << t.elapsed();
TomahawkSqlQuery query = newquery();
query.exec( "SELECT v FROM settings WHERE k='dbid'" );
if ( query.next() )
{
m_dbid = query.value( 0 ).toString();
}
else
{
m_dbid = uuid();
query.exec( QString( "INSERT INTO settings(k,v) VALUES('dbid','%1')" ).arg( m_dbid ) );
}
tLog() << "Database ID:" << m_dbid;
// make sqlite behave how we want:
query.exec( "PRAGMA auto_vacuum = FULL" );
query.exec( "PRAGMA synchronous = ON" );
query.exec( "PRAGMA foreign_keys = ON" );
//query.exec( "PRAGMA temp_store = MEMORY" );
tDebug( LOGVERBOSE ) << "Tweaked db pragmas:" << t.elapsed();
// in case of unclean shutdown last time:
query.exec( "UPDATE source SET isonline = 'false'" );
// schemaUpdated = true; // REMOVE ME
m_fuzzyIndex = new FuzzyIndex( *this, schemaUpdated );
if ( schemaUpdated )
QTimer::singleShot( 0, this, SLOT( updateIndex() ) );
tDebug( LOGVERBOSE ) << "Loaded index:" << t.elapsed();
if ( qApp->arguments().contains( "--dumpdb" ) )
{
dumpDatabase();
::exit( 0 );
}
}
Tomahawk::DatabaseImpl::DatabaseImpl( const QString& dbname )
{
QTime t;
t.start();
// Signals for splash screen must be connected here
connect( this, SIGNAL( schemaUpdateStarted() ),
qApp, SLOT( onSchemaUpdateStarted() ) );
connect( this, SIGNAL( schemaUpdateStatus( QString ) ),
qApp, SLOT( onSchemaUpdateStatus( QString ) ) );
connect( this, SIGNAL( schemaUpdateDone() ),
qApp, SLOT( onSchemaUpdateDone() ) );
bool schemaUpdated = openDatabase( dbname );
tDebug( LOGVERBOSE ) << "Opened database:" << t.elapsed();
TomahawkSqlQuery query = newquery();
query.exec( "SELECT v FROM settings WHERE k='dbid'" );
if ( query.next() )
{
m_dbid = query.value( 0 ).toString();
}
else
{
m_dbid = uuid();
query.exec( QString( "INSERT INTO settings(k,v) VALUES('dbid','%1')" ).arg( m_dbid ) );
}
tLog() << "Database ID:" << m_dbid;
init();
query.exec( "PRAGMA auto_vacuum = FULL" );
query.exec( "PRAGMA synchronous = NORMAL" );
tDebug( LOGVERBOSE ) << "Tweaked db pragmas:" << t.elapsed();
// in case of unclean shutdown last time:
query.exec( "UPDATE source SET isonline = 'false'" );
query.exec( "DELETE FROM oplog WHERE source IS NULL AND singleton = 'true'" );
m_fuzzyIndex = new Tomahawk::DatabaseFuzzyIndex( this, schemaUpdated );
tDebug( LOGVERBOSE ) << "Loaded index:" << t.elapsed();
if ( qApp->arguments().contains( "--dumpdb" ) )
{
dumpDatabase();
::exit( 0 );
}
}
bool
DatabaseImpl::updateSchema( int currentver )
{
qDebug() << "Create tables... old version is" << currentver;
QString sql( get_tomahawk_sql() );
QStringList statements = sql.split( ";", QString::SkipEmptyParts );
db.transaction();
foreach( const QString& sl, statements )
{
QString s( sl.trimmed() );
if( s.length() == 0 )
continue;
qDebug() << "Executing:" << s;
TomahawkSqlQuery query = newquery();
query.exec( s );
}
bool
DatabaseImpl::updateSchema( int oldVersion )
{
// we are called here with the old database. we must migrate it to the CURRENT_SCHEMA_VERSION from the oldVersion
if ( oldVersion == 0 ) // empty database, so create our tables and stuff
{
tLog() << "Create tables... old version is" << oldVersion;
QString sql( get_tomahawk_sql() );
QStringList statements = sql.split( ";", QString::SkipEmptyParts );
m_db.transaction();
foreach ( const QString& sl, statements )
{
QString s( sl.trimmed() );
if ( s.length() == 0 )
continue;
tLog() << "Executing:" << s;
TomahawkSqlQuery query = newquery();
query.exec( s );
}
DatabaseImpl::DatabaseImpl( const QString& dbname, Database* parent )
: QObject( (QObject*) parent )
, m_lastartid( 0 )
, m_lastalbid( 0 )
, m_lasttrkid( 0 )
{
db = QSqlDatabase::addDatabase( "QSQLITE", "tomahawk" );
db.setDatabaseName( dbname );
if ( !db.open() )
{
qDebug() << "FAILED TO OPEN DB";
throw "failed to open db"; // TODO
}
QSqlQuery qry = QSqlQuery( db );
bool schemaUpdated = false;
qry.exec( "SELECT v FROM settings WHERE k='schema_version'" );
if ( qry.next() )
{
int v = qry.value( 0 ).toInt();
qDebug() << "Current schema is" << v << this->thread();
if ( v != CURRENT_SCHEMA_VERSION )
{
QString newname = QString("%1.v%2").arg(dbname).arg(v);
qDebug() << endl << "****************************" << endl;
qDebug() << "Schema version too old: " << v << ". Current version is:" << CURRENT_SCHEMA_VERSION;
qDebug() << "Moving" << dbname << newname;
qDebug() << endl << "****************************" << endl;
qry.clear();
qry.finish();
db.close();
db.removeDatabase( "tomahawk" );
if( QFile::rename( dbname, newname ) )
{
db = QSqlDatabase::addDatabase( "QSQLITE", "tomahawk" );
db.setDatabaseName( dbname );
if( !db.open() )
throw "db moving failed";
TomahawkSqlQuery query = newquery();
query.exec( "PRAGMA auto_vacuum = FULL" );
schemaUpdated = updateSchema( v );
}
else
{
Q_ASSERT( false );
QTimer::singleShot( 0, qApp, SLOT( quit() ) );
return;
}
}
}
else
{
schemaUpdated = updateSchema( 0 );
}
TomahawkSqlQuery query = newquery();
query.exec( "SELECT v FROM settings WHERE k='dbid'" );
if( query.next() )
{
m_dbid = query.value( 0 ).toString();
}
else
{
m_dbid = uuid();
query.exec( QString( "INSERT INTO settings(k,v) VALUES('dbid','%1')" ).arg( m_dbid ) );
}
qDebug() << "Database ID:" << m_dbid;
// make sqlite behave how we want:
query.exec( "PRAGMA synchronous = ON" );
query.exec( "PRAGMA foreign_keys = ON" );
//query.exec( "PRAGMA temp_store = MEMORY" );
// in case of unclean shutdown last time:
query.exec( "UPDATE source SET isonline = 'false'" );
m_fuzzyIndex = new FuzzyIndex( *this, schemaUpdated );
}
DatabaseImpl::DatabaseImpl( const QString& dbname, Database* parent )
: QObject( (QObject*) parent )
, m_lastartid( 0 )
, m_lastalbid( 0 )
, m_lasttrkid( 0 )
{
bool schemaUpdated = false;
int version = getDatabaseVersion( dbname );
if ( version > 0 && version != CURRENT_SCHEMA_VERSION )
{
QString newname = QString( "%1.v%2" ).arg( dbname ).arg( version );
tLog() << endl << "****************************" << endl;
tLog() << "Schema version too old: " << version << ". Current version is:" << CURRENT_SCHEMA_VERSION;
tLog() << "Moving" << dbname << newname;
tLog() << "If the migration fails, you can recover your DB by copying" << newname << "back to" << dbname;
tLog() << endl << "****************************" << endl;
QFile::copy( dbname, newname );
{
db = QSqlDatabase::addDatabase( "QSQLITE", "tomahawk" );
db.setDatabaseName( dbname );
if( !db.open() )
throw "db moving failed";
TomahawkSqlQuery query = newquery();
query.exec( "PRAGMA auto_vacuum = FULL" );
schemaUpdated = updateSchema( version );
if ( !schemaUpdated )
{
Q_ASSERT( false );
QTimer::singleShot( 0, qApp, SLOT( quit() ) );
}
}
}
else
{
db = QSqlDatabase::addDatabase( "QSQLITE", "tomahawk" );
db.setDatabaseName( dbname );
if ( !db.open() )
{
tLog() << "Failed to open database" << dbname;
throw "failed to open db"; // TODO
}
if ( version < 0 )
schemaUpdated = updateSchema( 0 );
}
TomahawkSqlQuery query = newquery();
query.exec( "SELECT v FROM settings WHERE k='dbid'" );
if( query.next() )
{
m_dbid = query.value( 0 ).toString();
}
else
{
m_dbid = uuid();
query.exec( QString( "INSERT INTO settings(k,v) VALUES('dbid','%1')" ).arg( m_dbid ) );
}
tLog() << "Database ID:" << m_dbid;
// make sqlite behave how we want:
query.exec( "PRAGMA synchronous = ON" );
query.exec( "PRAGMA foreign_keys = ON" );
//query.exec( "PRAGMA temp_store = MEMORY" );
// in case of unclean shutdown last time:
query.exec( "UPDATE source SET isonline = 'false'" );
m_fuzzyIndex = new FuzzyIndex( *this, schemaUpdated );
}