bool DBConfig::dropDatabase( string& errmsg ){
/**
* 1) make sure everything is up
* 2) update config server
* 3) drop and reset sharded collections
* 4) drop and reset primary
* 5) drop everywhere to clean up loose ends
*/
log() << "DBConfig::dropDatabase: " << _name << endl;
// 1
if ( ! configServer.allUp( errmsg ) ){
log(1) << "\t DBConfig::dropDatabase not all up" << endl;
return 0;
}
// 2
grid.removeDB( _name );
remove( true );
if ( ! configServer.allUp( errmsg ) ){
log() << "error removing from config server even after checking!" << endl;
return 0;
}
log(1) << "\t removed entry from config server for: " << _name << endl;
set<Shard> allServers;
// 3
while ( true ){
int num;
if ( ! _dropShardedCollections( num , allServers , errmsg ) )
return 0;
log() << " DBConfig::dropDatabase: " << _name << " dropped sharded collections: " << num << endl;
if ( num == 0 )
break;
}
// 4
{
ScopedDbConnection conn( _primary );
BSONObj res;
if ( ! conn->dropDatabase( _name , &res ) ){
errmsg = res.toString();
return 0;
}
conn.done();
}
// 5
for ( set<Shard>::iterator i=allServers.begin(); i!=allServers.end(); i++ ){
ScopedDbConnection conn( *i );
BSONObj res;
if ( ! conn->dropDatabase( _name , &res ) ){
errmsg = res.toString();
return 0;
}
conn.done();
}
log(1) << "\t dropped primary db for: " << _name << endl;
return true;
}
bool DBConfig::dropDatabase( string& errmsg ) {
/**
* 1) make sure everything is up
* 2) update config server
* 3) drop and reset sharded collections
* 4) drop and reset primary
* 5) drop everywhere to clean up loose ends
*/
log() << "DBConfig::dropDatabase: " << _name << endl;
configServer.logChange( "dropDatabase.start" , _name , BSONObj() );
// 1
if ( ! configServer.allUp( errmsg ) ) {
log(1) << "\t DBConfig::dropDatabase not all up" << endl;
return 0;
}
// 2
grid.removeDB( _name );
{
ScopedDbConnection conn( configServer.modelServer(), 30.0 );
conn->remove( ShardNS::database , BSON( "_id" << _name ) );
errmsg = conn->getLastError();
if ( ! errmsg.empty() ) {
log() << "could not drop '" << _name << "': " << errmsg << endl;
conn.done();
return false;
}
conn.done();
}
if ( ! configServer.allUp( errmsg ) ) {
log() << "error removing from config server even after checking!" << endl;
return 0;
}
log(1) << "\t removed entry from config server for: " << _name << endl;
set<Shard> allServers;
// 3
while ( true ) {
int num = 0;
if ( ! _dropShardedCollections( num , allServers , errmsg ) )
return 0;
log() << " DBConfig::dropDatabase: " << _name << " dropped sharded collections: " << num << endl;
if ( num == 0 )
break;
}
// 4
{
ScopedDbConnection conn( _primary, 30.0 );
BSONObj res;
if ( ! conn->dropDatabase( _name , &res ) ) {
errmsg = res.toString();
return 0;
}
conn.done();
}
// 5
for ( set<Shard>::iterator i=allServers.begin(); i!=allServers.end(); i++ ) {
ScopedDbConnection conn( *i, 30.0 );
BSONObj res;
if ( ! conn->dropDatabase( _name , &res ) ) {
errmsg = res.toString();
return 0;
}
conn.done();
}
log(1) << "\t dropped primary db for: " << _name << endl;
configServer.logChange( "dropDatabase" , _name , BSONObj() );
return true;
}
