ChunkVersion forceShardFilteringMetadataRefresh(OperationContext* opCtx,
const NamespaceString& nss,
bool forceRefreshFromThisThread) {
invariant(!opCtx->lockState()->isLocked());
invariant(!opCtx->getClient()->isInDirectClient());
auto const shardingState = ShardingState::get(opCtx);
invariant(shardingState->canAcceptShardedCommands());
const auto routingInfo =
uassertStatusOK(Grid::get(opCtx)->catalogCache()->getCollectionRoutingInfoWithRefresh(
opCtx, nss, forceRefreshFromThisThread));
const auto cm = routingInfo.cm();
if (!cm) {
// No chunk manager, so unsharded.
// Exclusive collection lock needed since we're now changing the metadata
AutoGetCollection autoColl(opCtx, nss, MODE_IX, MODE_X);
auto css = CollectionShardingState::get(opCtx, nss);
css->refreshMetadata(opCtx, nullptr);
return ChunkVersion::UNSHARDED();
}
{
AutoGetCollection autoColl(opCtx, nss, MODE_IS);
auto metadata = CollectionShardingState::get(opCtx, nss)->getMetadata(opCtx);
// We already have newer version
if (metadata && metadata->getCollVersion().epoch() == cm->getVersion().epoch() &&
metadata->getCollVersion() >= cm->getVersion()) {
LOG(1) << "Skipping refresh of metadata for " << nss << " "
<< metadata->getCollVersion() << " with an older " << cm->getVersion();
return metadata->getShardVersion();
}
}
// Exclusive collection lock needed since we're now changing the metadata
AutoGetCollection autoColl(opCtx, nss, MODE_IX, MODE_X);
auto css = CollectionShardingState::get(opCtx, nss);
auto metadata = css->getMetadata(opCtx);
// We already have newer version
if (metadata && metadata->getCollVersion().epoch() == cm->getVersion().epoch() &&
metadata->getCollVersion() >= cm->getVersion()) {
LOG(1) << "Skipping refresh of metadata for " << nss << " " << metadata->getCollVersion()
<< " with an older " << cm->getVersion();
return metadata->getShardVersion();
}
std::unique_ptr<CollectionMetadata> newCollectionMetadata =
stdx::make_unique<CollectionMetadata>(cm, shardingState->getShardName());
css->refreshMetadata(opCtx, std::move(newCollectionMetadata));
return css->getMetadata(opCtx)->getShardVersion();
}
CollectionFileData::CollectionFileData(FileData* file, SystemData* system)
: FileData(file->getType(), file->getPath(), file->getSystemEnvData(), system)/*,
mSourceFileData(file->getSourceFileData()),
mParent(NULL),
metadata(file->getSourceFileData()->metadata)*/
{
// we use this constructor to create a clone of the filedata, and change its system
mSourceFileData = file->getSourceFileData();
refreshMetadata();
mParent = NULL;
metadata = mSourceFileData->metadata;
mSystemName = mSourceFileData->getSystem()->getName();
}
