static void multiUpdate( OperationContext* txn,
const BatchItemRef& updateItem,
WriteOpResult* result ) {
const NamespaceString nsString(updateItem.getRequest()->getNS());
UpdateRequest request(nsString);
request.setQuery(updateItem.getUpdate()->getQuery());
request.setUpdates(updateItem.getUpdate()->getUpdateExpr());
request.setMulti(updateItem.getUpdate()->getMulti());
request.setUpsert(updateItem.getUpdate()->getUpsert());
request.setUpdateOpLog(true);
UpdateLifecycleImpl updateLifecycle(true, request.getNamespaceString());
request.setLifecycle(&updateLifecycle);
UpdateExecutor executor(&request, &txn->getCurOp()->debug());
Status status = executor.prepare();
if (!status.isOK()) {
result->setError(toWriteError(status));
return;
}
///////////////////////////////////////////
Lock::DBWrite writeLock(txn->lockState(), nsString.ns());
///////////////////////////////////////////
if (!checkShardVersion(txn, &shardingState, *updateItem.getRequest(), result))
return;
Client::Context ctx( nsString.ns(),
storageGlobalParams.dbpath,
false /* don't check version */ );
try {
UpdateResult res = executor.execute(txn, ctx.db());
const long long numDocsModified = res.numDocsModified;
const long long numMatched = res.numMatched;
const BSONObj resUpsertedID = res.upserted;
// We have an _id from an insert
const bool didInsert = !resUpsertedID.isEmpty();
result->getStats().nModified = didInsert ? 0 : numDocsModified;
result->getStats().n = didInsert ? 1 : numMatched;
result->getStats().upsertedID = resUpsertedID;
}
catch (const DBException& ex) {
status = ex.toStatus();
if (ErrorCodes::isInterruption(status.code())) {
throw;
}
result->setError(toWriteError(status));
}
}
/**
* Perform an update operation, which might update multiple documents in the lock. Dispatches
* to update code currently to do most of this.
*
* Might error, otherwise populates the result.
*/
static void multiUpdate( const BatchItemRef& updateItem,
WriteOpResult* result ) {
Lock::assertWriteLocked( updateItem.getRequest()->getNS() );
BSONObj queryObj = updateItem.getUpdate()->getQuery();
BSONObj updateObj = updateItem.getUpdate()->getUpdateExpr();
bool multi = updateItem.getUpdate()->getMulti();
bool upsert = updateItem.getUpdate()->getUpsert();
bool didInsert = false;
long long numMatched = 0;
long long numDocsModified = 0;
BSONObj resUpsertedID;
try {
const NamespaceString requestNs( updateItem.getRequest()->getNS() );
UpdateRequest request( requestNs );
request.setQuery( queryObj );
request.setUpdates( updateObj );
request.setUpsert( upsert );
request.setMulti( multi );
request.setUpdateOpLog();
// TODO(greg) We need to send if we are ignoring the shard version below,
// but for now yes
UpdateLifecycleImpl updateLifecycle( true, requestNs );
request.setLifecycle( &updateLifecycle );
UpdateResult res = update( request, &cc().curop()->debug() );
numDocsModified = res.numDocsModified;
numMatched = res.numMatched;
resUpsertedID = res.upserted;
// We have an _id from an insert
didInsert = !resUpsertedID.isEmpty();
result->stats.nModified = didInsert ? 0 : numDocsModified;
result->stats.n = didInsert ? 1 : numMatched;
result->stats.upsertedID = resUpsertedID;
}
catch ( const DBException& ex ) {
result->error = toWriteError( ex.toStatus() );
}
}
Status Strategy::commandOpWrite(const std::string& dbName,
const BSONObj& command,
BatchItemRef targetingBatchItem,
std::vector<CommandResult>* results) {
// Note that this implementation will not handle targeting retries and does not completely
// emulate write behavior
ChunkManagerTargeter targeter(NamespaceString(
targetingBatchItem.getRequest()->getTargetingNS()));
Status status = targeter.init();
if (!status.isOK())
return status;
OwnedPointerVector<ShardEndpoint> endpointsOwned;
vector<ShardEndpoint*>& endpoints = endpointsOwned.mutableVector();
if (targetingBatchItem.getOpType() == BatchedCommandRequest::BatchType_Insert) {
ShardEndpoint* endpoint;
Status status = targeter.targetInsert(targetingBatchItem.getDocument(), &endpoint);
if (!status.isOK())
return status;
endpoints.push_back(endpoint);
}
else if (targetingBatchItem.getOpType() == BatchedCommandRequest::BatchType_Update) {
Status status = targeter.targetUpdate(*targetingBatchItem.getUpdate(), &endpoints);
if (!status.isOK())
return status;
}
else {
invariant(targetingBatchItem.getOpType() == BatchedCommandRequest::BatchType_Delete);
Status status = targeter.targetDelete(*targetingBatchItem.getDelete(), &endpoints);
if (!status.isOK())
return status;
}
DBClientShardResolver resolver;
DBClientMultiCommand dispatcher;
// Assemble requests
for (vector<ShardEndpoint*>::const_iterator it = endpoints.begin(); it != endpoints.end();
++it) {
const ShardEndpoint* endpoint = *it;
ConnectionString host;
Status status = resolver.chooseWriteHost(endpoint->shardName, &host);
if (!status.isOK())
return status;
RawBSONSerializable request(command);
dispatcher.addCommand(host, dbName, request);
}
// Errors reported when recv'ing responses
dispatcher.sendAll();
Status dispatchStatus = Status::OK();
// Recv responses
while (dispatcher.numPending() > 0) {
ConnectionString host;
RawBSONSerializable response;
Status status = dispatcher.recvAny(&host, &response);
if (!status.isOK()) {
// We always need to recv() all the sent operations
dispatchStatus = status;
continue;
}
CommandResult result;
result.target = host;
result.shardTarget = Shard::make(host.toString());
result.result = response.toBSON();
results->push_back(result);
}
return dispatchStatus;
}