本文整理汇总了C++中BatchedCommandRequest::getMetadata方法的典型用法代码示例。如果您正苦于以下问题：C++ BatchedCommandRequest::getMetadata方法的具体用法？C++ BatchedCommandRequest::getMetadata怎么用？C++ BatchedCommandRequest::getMetadata使用的例子？那么, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在类BatchedCommandRequest的用法示例。
在下文中一共展示了BatchedCommandRequest::getMetadata方法的3个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的C++代码示例。
示例1: checkShardVersion
static bool checkShardVersion(OperationContext* txn,
ShardingState* shardingState,
const BatchedCommandRequest& request,
WriteOpResult* result) {
const NamespaceString nss( request.getTargetingNS() );
txn->lockState()->assertWriteLocked( nss.ns() );
ChunkVersion requestShardVersion =
request.isMetadataSet() && request.getMetadata()->isShardVersionSet() ?
request.getMetadata()->getShardVersion() : ChunkVersion::IGNORED();
if ( shardingState->enabled() ) {
CollectionMetadataPtr metadata = shardingState->getCollectionMetadata( nss.ns() );
if ( !ChunkVersion::isIgnoredVersion( requestShardVersion ) ) {
ChunkVersion shardVersion =
metadata ? metadata->getShardVersion() : ChunkVersion::UNSHARDED();
if ( !requestShardVersion.isWriteCompatibleWith( shardVersion ) ) {
result->setError(new WriteErrorDetail);
buildStaleError(requestShardVersion, shardVersion, result->getError());
return false;
}
}
}
return true;
}示例2: executeBatch
//.........这里部分代码省略.........
bulkExecute( request, &upserted, &writeErrors );
//
// Try to enforce the write concern if everything succeeded (unordered or ordered)
// OR if something succeeded and we're unordered.
//
auto_ptr<WCErrorDetail> wcError;
bool needToEnforceWC = writeErrors.empty()
|| ( !request.getOrdered()
&& writeErrors.size() < request.sizeWriteOps() );
if ( needToEnforceWC ) {
_client->curop()->setMessage( "waiting for write concern" );
WriteConcernResult res;
Status status = waitForWriteConcern( _txn, writeConcern, _client->getLastOp(), &res );
if ( !status.isOK() ) {
wcError.reset( toWriteConcernError( status, res ) );
}
}
//
// Refresh metadata if needed
//
bool staleBatch = !writeErrors.empty()
&& writeErrors.back()->getErrCode() == ErrorCodes::StaleShardVersion;
if ( staleBatch ) {
const BatchedRequestMetadata* requestMetadata = request.getMetadata();
dassert( requestMetadata );
// Make sure our shard name is set or is the same as what was set previously
if ( shardingState.setShardName( requestMetadata->getShardName() ) ) {
//
// First, we refresh metadata if we need to based on the requested version.
//
ChunkVersion latestShardVersion;
shardingState.refreshMetadataIfNeeded( request.getTargetingNS(),
requestMetadata->getShardVersion(),
&latestShardVersion );
// Report if we're still changing our metadata
// TODO: Better reporting per-collection
if ( shardingState.inCriticalMigrateSection() ) {
noteInCriticalSection( writeErrors.back() );
}
if ( queueForMigrationCommit ) {
//
// Queue up for migration to end - this allows us to be sure that clients will
// not repeatedly try to refresh metadata that is not yet written to the config
// server. Not necessary for correctness.
// Exposed as optional parameter to allow testing of queuing behavior with
// different network timings.
//
const ChunkVersion& requestShardVersion = requestMetadata->getShardVersion();
示例3: executeBatch
void WriteBatchExecutor::executeBatch( const BatchedCommandRequest& request,
BatchedCommandResponse* response ) {
// TODO: Lift write concern parsing out of this entirely.
WriteConcernOptions writeConcern;
Status status = Status::OK();
BSONObj wcDoc;
if ( request.isWriteConcernSet() ) {
wcDoc = request.getWriteConcern();
}
if ( wcDoc.isEmpty() ) {
status = writeConcern.parse( _defaultWriteConcern );
}
else {
status = writeConcern.parse( wcDoc );
}
if ( status.isOK() ) {
status = validateWriteConcern( writeConcern );
}
if ( !status.isOK() ) {
response->setErrCode( status.code() );
response->setErrMessage( status.reason() );
response->setOk( false );
dassert( response->isValid(NULL) );
return;
}
bool silentWC = writeConcern.wMode.empty() && writeConcern.wNumNodes == 0
&& writeConcern.syncMode == WriteConcernOptions::NONE;
Timer commandTimer;
OwnedPointerVector<WriteErrorDetail> writeErrorsOwned;
vector<WriteErrorDetail*>& writeErrors = writeErrorsOwned.mutableVector();
OwnedPointerVector<BatchedUpsertDetail> upsertedOwned;
vector<BatchedUpsertDetail*>& upserted = upsertedOwned.mutableVector();
//
// Apply each batch item, possibly bulking some items together in the write lock.
// Stops on error if batch is ordered.
//
bulkExecute( request, &upserted, &writeErrors );
//
// Try to enforce the write concern if everything succeeded (unordered or ordered)
// OR if something succeeded and we're unordered.
//
auto_ptr<WCErrorDetail> wcError;
bool needToEnforceWC = writeErrors.empty()
|| ( !request.getOrdered()
&& writeErrors.size() < request.sizeWriteOps() );
if ( needToEnforceWC ) {
_client->curop()->setMessage( "waiting for write concern" );
WriteConcernResult res;
status = waitForWriteConcern( writeConcern, _client->getLastOp(), &res );
if ( !status.isOK() ) {
wcError.reset( toWriteConcernError( status, res ) );
}
}
//
// Refresh metadata if needed
//
bool staleBatch = !writeErrors.empty()
&& writeErrors.back()->getErrCode() == ErrorCodes::StaleShardVersion;
if ( staleBatch ) {
const BatchedRequestMetadata* requestMetadata = request.getMetadata();
dassert( requestMetadata );
// Make sure our shard name is set or is the same as what was set previously
if ( shardingState.setShardName( requestMetadata->getShardName() ) ) {
//
// First, we refresh metadata if we need to based on the requested version.
//
ChunkVersion latestShardVersion;
shardingState.refreshMetadataIfNeeded( request.getTargetingNS(),
requestMetadata->getShardVersion(),
&latestShardVersion );
// Report if we're still changing our metadata
// TODO: Better reporting per-collection
if ( shardingState.inCriticalMigrateSection() ) {
noteInCriticalSection( writeErrors.back() );
}
//.........这里部分代码省略.........