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Diffstat (limited to 'src/mongo/s/cluster_commands_helpers.h')
| -rw-r--r-- | src/mongo/s/cluster_commands_helpers.h | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/src/mongo/s/cluster_commands_helpers.h b/src/mongo/s/cluster_commands_helpers.h index bfe4e5abdce..31485508597 100644 --- a/src/mongo/s/cluster_commands_helpers.h +++ b/src/mongo/s/cluster_commands_helpers.h @@ -203,4 +203,15 @@ std::set<ShardId> getTargetedShardsForQuery(OperationContext* opCtx, const BSONObj& query, const BSONObj& collation); +/** + * If the command is running in a transaction, returns the proper routing table to use for targeting + * shards. If there is no active transaction or the transaction is not running with snapshot level + * read concern, the latest routing table is returned, otherwise a historical routing table is + * returned at the global read timestamp, which must have been selected by this point. + * + * Should be used by all router commands that can be run in a transaction when targeting shards. + */ +StatusWith<CachedCollectionRoutingInfo> getCollectionRoutingInfoForTxnCmd( + OperationContext* opCtx, const NamespaceString& nss); + } // namespace mongo |