diff options
Diffstat (limited to 'src/couch/src/couch_db_engine.erl')
| -rw-r--r-- | src/couch/src/couch_db_engine.erl | 24 |
1 files changed, 24 insertions, 0 deletions
diff --git a/src/couch/src/couch_db_engine.erl b/src/couch/src/couch_db_engine.erl index 9b288127a..9d804b1ab 100644 --- a/src/couch/src/couch_db_engine.erl +++ b/src/couch/src/couch_db_engine.erl @@ -42,6 +42,12 @@ -type purge_info() :: [{docid(), revs()}]. -type epochs() :: [{Node::atom(), UpdateSeq::non_neg_integer()}]. -type size_info() :: [{Name::atom(), Size::non_neg_integer()}]. +-type partition_info() :: [ + {partition, Partition::binary()} | + {doc_count, DocCount::non_neg_integer()} | + {doc_del_count, DocDelCount::non_neg_integer()} | + {sizes, size_info()} +]. -type write_stream_options() :: [ {buffer_size, Size::pos_integer()} | @@ -254,6 +260,18 @@ -callback get_size_info(DbHandle::db_handle()) -> SizeInfo::size_info(). +% This returns the information for the given partition. +% It should just be a list of {Name::atom(), Size::non_neg_integer()} +% It returns the partition name, doc count, deleted doc count and two sizes: +% +% active - Theoretical minimum number of bytes to store this partition on disk +% +% external - Number of bytes that would be required to represent the +% contents of this partition outside of the database +-callback get_partition_info(DbHandle::db_handle(), Partition::binary()) -> + partition_info(). + + % The current update sequence of the database. The update % sequence should be incrememnted for every revision added to % the database. @@ -627,6 +645,7 @@ get_prop/2, get_prop/3, get_size_info/1, + get_partition_info/2, get_update_seq/1, get_uuid/1, @@ -803,6 +822,11 @@ get_size_info(#db{} = Db) -> Engine:get_size_info(EngineState). +get_partition_info(#db{} = Db, Partition) -> + #db{engine = {Engine, EngineState}} = Db, + Engine:get_partition_info(EngineState, Partition). + + get_update_seq(#db{} = Db) -> #db{engine = {Engine, EngineState}} = Db, Engine:get_update_seq(EngineState). |