diff options
Diffstat (limited to 'src/mongo/s/catalog/replset/sharding_catalog_manager_impl.h')
| -rw-r--r-- | src/mongo/s/catalog/replset/sharding_catalog_manager_impl.h | 16 |
1 files changed, 16 insertions, 0 deletions
diff --git a/src/mongo/s/catalog/replset/sharding_catalog_manager_impl.h b/src/mongo/s/catalog/replset/sharding_catalog_manager_impl.h index ec1cf3841c9..9b261906ecf 100644 --- a/src/mongo/s/catalog/replset/sharding_catalog_manager_impl.h +++ b/src/mongo/s/catalog/replset/sharding_catalog_manager_impl.h @@ -106,6 +106,22 @@ private: StatusWith<std::string> _generateNewShardName(OperationContext* txn); /** + * Used during addShard to determine if there is already an existing shard that matches the + * shard that is currently being added. An OK return with boost::none indicates that there + * is no conflicting shard, and we can proceed trying to add the new shard. An OK return + * with a ShardType indicates that there is an existing shard that matches the shard being added + * but since the options match, this addShard request can do nothing and return success. A + * non-OK return either indicates a problem reading the existing shards from disk or more likely + * indicates that an existing shard conflicts with the shard being added and they have different + * options, so the addShard attempt must be aborted. + */ + StatusWith<boost::optional<ShardType>> _checkIfShardExists( + OperationContext* txn, + const ConnectionString& propsedShardConnectionString, + const std::string* shardProposedName, + long long maxSize); + + /** * Validates that the specified endpoint can serve as a shard server. In particular, this * this function checks that the shard can be contacted and that it is not already member of * another sharded cluster. |