Status Database::dropCollection( const StringData& fullns ) {
LOG(1) << "dropCollection: " << fullns << endl;
CollectionTemp* collection = getCollectionTemp( fullns );
if ( !collection ) {
// collection doesn't exist
return Status::OK();
}
_initForWrites();
BackgroundOperation::assertNoBgOpInProgForNs( fullns );
if ( collection->_details->getTotalIndexCount() > 0 ) {
try {
string errmsg;
BSONObjBuilder result;
if ( !dropIndexes( collection->_details, fullns, "*", errmsg, result, true) ) {
warning() << "could not drop collection: " << fullns
<< " because of " << errmsg << endl;
return Status( ErrorCodes::InternalError, errmsg );
}
}
catch( DBException& e ) {
stringstream ss;
ss << "drop: dropIndexes for collection failed - consider trying repair ";
ss << " cause: " << e.what();
warning() << ss.str() << endl;
return Status( ErrorCodes::InternalError, ss.str() );
}
verify( collection->_details->getTotalIndexCount() == 0 );
}
LOG(1) << "\t dropIndexes done" << endl;
ClientCursor::invalidate( fullns );
Top::global.collectionDropped( fullns );
NamespaceDetailsTransient::eraseCollection( fullns.toString() );
dropNS( fullns.toString() );
scoped_lock lk( _collectionLock );
_collections.erase( fullns.toString() );
return Status::OK();
}
Status Database::dropCollection( const StringData& fullns ) {
LOG(1) << "dropCollection: " << fullns << endl;
Collection* collection = getCollection( fullns );
if ( !collection ) {
// collection doesn't exist
return Status::OK();
}
_initForWrites();
{
NamespaceString s( fullns );
verify( s.db() == _name );
if( s.isSystem() ) {
if( s.coll() == "system.profile" ) {
if ( _profile != 0 )
return Status( ErrorCodes::IllegalOperation,
"turn off profiling before dropping system.profile collection" );
}
else {
return Status( ErrorCodes::IllegalOperation, "can't drop system ns" );
}
}
}
BackgroundOperation::assertNoBgOpInProgForNs( fullns );
audit::logDropCollection( currentClient.get(), fullns );
try {
Status s = collection->getIndexCatalog()->dropAllIndexes( true );
if ( !s.isOK() ) {
warning() << "could not drop collection, trying to drop indexes"
<< fullns << " because of " << s.toString();
return s;
}
}
catch( DBException& e ) {
stringstream ss;
ss << "drop: dropIndexes for collection failed - consider trying repair ";
ss << " cause: " << e.what();
warning() << ss.str() << endl;
return Status( ErrorCodes::InternalError, ss.str() );
}
verify( collection->_details->getTotalIndexCount() == 0 );
LOG(1) << "\t dropIndexes done" << endl;
ClientCursor::invalidate( fullns );
Top::global.collectionDropped( fullns );
Status s = _dropNS( fullns );
_clearCollectionCache( fullns ); // we want to do this always
if ( !s.isOK() )
return s;
DEV {
// check all index collection entries are gone
string nstocheck = fullns.toString() + ".$";
scoped_lock lk( _collectionLock );
for ( CollectionMap::iterator i = _collections.begin();
i != _collections.end();
++i ) {
string temp = i->first;
if ( temp.find( nstocheck ) != 0 )
continue;
log() << "after drop, bad cache entries for: "
<< fullns << " have " << temp;
verify(0);
}
}
return Status::OK();
}
