void BatchSafeWriter::safeWriteBatch( DBClientBase* conn,
const BatchedCommandRequest& request,
BatchedCommandResponse* response ) {
// N starts at zero, and we add to it for each item
response->setN( 0 );
for ( size_t i = 0; i < request.sizeWriteOps(); ++i ) {
BatchItemRef itemRef( &request, static_cast<int>( i ) );
LastError lastError;
_safeWriter->safeWrite( conn, itemRef, &lastError );
// Register the error if we need to
BatchedErrorDetail* batchError = lastErrorToBatchError( lastError );
if ( batchError ) {
batchError->setIndex( i );
response->addToErrDetails( batchError );
}
response->setN( response->getN() + lastError.nObjects );
if ( !lastError.upsertedId.isEmpty() ) {
BatchedUpsertDetail* upsertedId = new BatchedUpsertDetail;
upsertedId->setIndex( i );
upsertedId->setUpsertedID( lastError.upsertedId );
response->addToUpsertDetails( upsertedId );
}
// Break on first error if we're ordered
if ( request.getOrdered() && BatchSafeWriter::isFailedOp( lastError ) ) break;
}
if ( request.sizeWriteOps() == 1 && response->isErrDetailsSet()
&& !response->isErrCodeSet() ) {
// Promote single error to batch error
const BatchedErrorDetail* error = response->getErrDetailsAt( 0 );
response->setErrCode( error->getErrCode() );
if ( error->isErrInfoSet() ) response->setErrInfo( error->getErrInfo() );
response->setErrMessage( error->getErrMessage() );
response->unsetErrDetails();
}
if ( request.sizeWriteOps() == 1 && response->isUpsertDetailsSet() ) {
// Promote single upsert to batch upsert
const BatchedUpsertDetail* upsertedId = response->getUpsertDetailsAt( 0 );
response->setSingleUpserted( upsertedId->getUpsertedID() );
response->unsetUpsertDetails();
}
response->setOk( !response->isErrCodeSet() );
dassert( response->isValid( NULL ) );
}
BatchedErrorDetail* BatchSafeWriter::lastErrorToBatchError( const LastError& lastError ) {
if ( BatchSafeWriter::isFailedOp( lastError ) ) {
BatchedErrorDetail* batchError = new BatchedErrorDetail;
if ( lastError.code != 0 ) batchError->setErrCode( lastError.code );
else batchError->setErrCode( ErrorCodes::UnknownError );
batchError->setErrMessage( lastError.msg );
return batchError;
}
return NULL;
}
void WriteOp::setOpError( const BatchedErrorDetail& error ) {
dassert( _state == WriteOpState_Ready );
_error.reset( new BatchedErrorDetail );
error.cloneTo( _error.get() );
_state = WriteOpState_Error;
// No need to updateOpState, set directly
}
void BatchSafeWriter::safeWriteBatch( DBClientBase* conn,
const BatchedCommandRequest& request,
BatchedCommandResponse* response ) {
for ( size_t i = 0; i < request.sizeWriteOps(); ++i ) {
BatchItemRef itemRef( &request, static_cast<int>( i ) );
LastError lastError;
_safeWriter->safeWrite( conn, itemRef, &lastError );
// Register the error if we need to
BatchedErrorDetail* batchError = lastErrorToBatchError( lastError );
batchError->setIndex( i );
response->addToErrDetails( batchError );
// TODO: Other stats, etc.
// Break on first error if we're ordered
if ( request.getOrdered() && BatchSafeWriter::isFailedOp( lastError ) ) break;
}
}
void WriteOp::noteWriteError( const TargetedWrite& targetedWrite,
const BatchedErrorDetail& error ) {
const WriteOpRef& ref = targetedWrite.writeOpRef;
ChildWriteOp& childOp = *_childOps.at( ref.second );
childOp.pendingWrite = NULL;
childOp.endpoint.reset( new ShardEndpoint( targetedWrite.endpoint ) );
childOp.error.reset( new BatchedErrorDetail );
error.cloneTo( childOp.error.get() );
childOp.state = WriteOpState_Error;
updateOpState();
}
BatchedErrorDetail* BatchSafeWriter::lastErrorToBatchError( const LastError& lastError ) {
bool isFailedOp = lastError.msg != "";
bool isStaleOp = lastError.writebackId.isSet();
dassert( !( isFailedOp && isStaleOp ) );
if ( isFailedOp ) {
BatchedErrorDetail* batchError = new BatchedErrorDetail;
if ( lastError.code != 0 ) batchError->setErrCode( lastError.code );
else batchError->setErrCode( ErrorCodes::UnknownError );
batchError->setErrMessage( lastError.msg );
return batchError;
}
else if ( isStaleOp ) {
BatchedErrorDetail* batchError = new BatchedErrorDetail;
batchError->setErrCode( ErrorCodes::StaleShardVersion );
batchError->setErrInfo( BSON( "downconvert" << true ) ); // For debugging
batchError->setErrMessage( "shard version was stale" );
return batchError;
}
return NULL;
}
void batchErrorToLastError( const BatchedCommandRequest& request,
const BatchedCommandResponse& response,
LastError* error ) {
scoped_ptr<BatchedErrorDetail> topLevelError;
BatchedErrorDetail* lastBatchError = NULL;
if ( !response.getOk() ) {
int code = response.getErrCode();
// Check for batch error
// We don't care about write concern errors, these happen in legacy mode in GLE
if ( code != ErrorCodes::WriteConcernFailed && !response.isErrDetailsSet() ) {
// Top-level error, all writes failed
topLevelError.reset( new BatchedErrorDetail );
buildErrorFromResponse( response, topLevelError.get() );
lastBatchError = topLevelError.get();
}
else if ( response.isErrDetailsSet() ) {
// The last error in the batch is always reported - this matches expected COE
// semantics for insert batches and works for single writes
lastBatchError = response.getErrDetails().back();
}
}
// Record an error if one exists
if ( lastBatchError ) {
error->raiseError( lastBatchError->getErrCode(),
lastBatchError->getErrMessage().c_str() );
return;
}
// Record write stats otherwise
// NOTE: For multi-write batches, our semantics change a little because we don't have
// un-aggregated "n" stats.
if ( request.getBatchType() == BatchedCommandRequest::BatchType_Update ) {
BSONObj upsertedId;
if ( response.isSingleUpsertedSet() ) upsertedId = response.getSingleUpserted();
else if( response.isUpsertDetailsSet() ) {
// Only report the very last item's upserted id if applicable
if ( response.getUpsertDetails().back()->getIndex() + 1
== static_cast<int>( request.sizeWriteOps() ) ) {
upsertedId = response.getUpsertDetails().back()->getUpsertedID();
}
}
int numUpserted = 0;
if ( response.isSingleUpsertedSet() )
++numUpserted;
else if ( response.isUpsertDetailsSet() )
numUpserted += response.sizeUpsertDetails();
int numUpdated = response.getN() - numUpserted;
dassert( numUpdated >= 0 );
error->recordUpdate( numUpdated > 0, response.getN(), upsertedId );
}
else if ( request.getBatchType() == BatchedCommandRequest::BatchType_Delete ) {
error->recordDelete( response.getN() );
}
}
static void cloneBatchErrorFrom( const BatchedErrorDetail& details,
BatchedCommandResponse* response ) {
response->setErrCode( details.getErrCode() );
if ( details.isErrInfoSet() ) response->setErrInfo( details.getErrInfo() );
response->setErrMessage( details.getErrMessage() );
}
