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Diffstat (limited to 'src/couchdb/couch_view_compactor.erl')
-rw-r--r-- | src/couchdb/couch_view_compactor.erl | 98 |
1 files changed, 0 insertions, 98 deletions
diff --git a/src/couchdb/couch_view_compactor.erl b/src/couchdb/couch_view_compactor.erl deleted file mode 100644 index 895556bf..00000000 --- a/src/couchdb/couch_view_compactor.erl +++ /dev/null @@ -1,98 +0,0 @@ -% Licensed under the Apache License, Version 2.0 (the "License"); you may not -% use this file except in compliance with the License. You may obtain a copy of -% the License at -% -% http://www.apache.org/licenses/LICENSE-2.0 -% -% Unless required by applicable law or agreed to in writing, software -% distributed under the License is distributed on an "AS IS" BASIS, WITHOUT -% WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the -% License for the specific language governing permissions and limitations under -% the License. - --module(couch_view_compactor). - --include ("couch_db.hrl"). - --export([start_compact/2]). - -%% @spec start_compact(DbName::binary(), GroupId:binary()) -> ok -%% @doc Compacts the views. GroupId must not include the _design/ prefix -start_compact(DbName, GroupId) -> - Pid = couch_view:get_group_server(DbName, <<"_design/",GroupId/binary>>), - gen_server:cast(Pid, {start_compact, fun compact_group/2}). - -%%============================================================================= -%% internal functions -%%============================================================================= - -%% @spec compact_group(Group, NewGroup) -> ok -compact_group(Group, EmptyGroup) -> - #group{ - current_seq = Seq, - id_btree = IdBtree, - name = GroupId, - views = Views - } = Group, - - #group{ - db = Db, - id_btree = EmptyIdBtree, - views = EmptyViews - } = EmptyGroup, - - {ok, {Count, _}} = couch_btree:full_reduce(Db#db.fulldocinfo_by_id_btree), - - <<"_design", ShortName/binary>> = GroupId, - DbName = couch_db:name(Db), - TaskName = <<DbName/binary, ShortName/binary>>, - couch_task_status:add_task(<<"View Group Compaction">>, TaskName, <<"">>), - - Fun = fun(KV, {Bt, Acc, TotalCopied}) -> - if TotalCopied rem 10000 =:= 0 -> - couch_task_status:update("Copied ~p of ~p Ids (~p%)", - [TotalCopied, Count, (TotalCopied*100) div Count]), - {ok, Bt2} = couch_btree:add(Bt, lists:reverse([KV|Acc])), - {ok, {Bt2, [], TotalCopied+1}}; - true -> - {ok, {Bt, [KV|Acc], TotalCopied+1}} - end - end, - {ok, _, {Bt3, Uncopied, _Total}} = couch_btree:foldl(IdBtree, Fun, - {EmptyIdBtree, [], 0}), - {ok, NewIdBtree} = couch_btree:add(Bt3, lists:reverse(Uncopied)), - - NewViews = lists:map(fun({View, EmptyView}) -> - compact_view(View, EmptyView) - end, lists:zip(Views, EmptyViews)), - - NewGroup = EmptyGroup#group{ - id_btree=NewIdBtree, - views=NewViews, - current_seq=Seq - }, - - Pid = couch_view:get_group_server(DbName, GroupId), - gen_server:cast(Pid, {compact_done, NewGroup}). - -%% @spec compact_view(View, EmptyView, Retry) -> CompactView -compact_view(View, EmptyView) -> - {ok, Count} = couch_view:get_row_count(View), - - %% Key is {Key,DocId} - Fun = fun(KV, {Bt, Acc, TotalCopied}) -> - if TotalCopied rem 10000 =:= 0 -> - couch_task_status:update("View #~p: copied ~p of ~p KVs (~p%)", - [View#view.id_num, TotalCopied, Count, (TotalCopied*100) div Count]), - {ok, Bt2} = couch_btree:add(Bt, lists:reverse([KV|Acc])), - {ok, {Bt2, [], TotalCopied + 1}}; - true -> - {ok, {Bt, [KV|Acc], TotalCopied + 1}} - end - end, - - {ok, _, {Bt3, Uncopied, _Total}} = couch_btree:foldl(View#view.btree, Fun, - {EmptyView#view.btree, [], 0}), - {ok, NewBt} = couch_btree:add(Bt3, lists:reverse(Uncopied)), - EmptyView#view{btree = NewBt}. - |