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Diffstat (limited to 'src/fabric/src/fabric_doc_update.erl')
| -rw-r--r-- | src/fabric/src/fabric_doc_update.erl | 377 |
1 files changed, 0 insertions, 377 deletions
diff --git a/src/fabric/src/fabric_doc_update.erl b/src/fabric/src/fabric_doc_update.erl deleted file mode 100644 index d670e3ccf..000000000 --- a/src/fabric/src/fabric_doc_update.erl +++ /dev/null @@ -1,377 +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(fabric_doc_update). - --export([go/3]). - --include_lib("fabric/include/fabric.hrl"). --include_lib("mem3/include/mem3.hrl"). --include_lib("couch/include/couch_db.hrl"). - -go(_, [], _) -> - {ok, []}; -go(DbName, AllDocs0, Opts) -> - AllDocs1 = before_doc_update(DbName, AllDocs0, Opts), - AllDocs = tag_docs(AllDocs1), - validate_atomic_update(DbName, AllDocs, lists:member(all_or_nothing, Opts)), - Options = lists:delete(all_or_nothing, Opts), - GroupedDocs = lists:map(fun({#shard{name=Name, node=Node} = Shard, Docs}) -> - Docs1 = untag_docs(Docs), - Ref = rexi:cast(Node, {fabric_rpc, update_docs, [Name,Docs1,Options]}), - {Shard#shard{ref=Ref}, Docs} - end, group_docs_by_shard(DbName, AllDocs)), - {Workers, _} = lists:unzip(GroupedDocs), - RexiMon = fabric_util:create_monitors(Workers), - W = couch_util:get_value(w, Options, integer_to_list(mem3:quorum(DbName))), - Acc0 = {length(Workers), length(AllDocs), list_to_integer(W), GroupedDocs, - dict:new()}, - Timeout = fabric_util:request_timeout(), - try rexi_utils:recv(Workers, #shard.ref, fun handle_message/3, Acc0, infinity, Timeout) of - {ok, {Health, Results}} - when Health =:= ok; Health =:= accepted; Health =:= error -> - {Health, [R || R <- couch_util:reorder_results(AllDocs, Results), R =/= noreply]}; - {timeout, Acc} -> - {_, _, W1, GroupedDocs1, DocReplDict} = Acc, - {DefunctWorkers, _} = lists:unzip(GroupedDocs1), - fabric_util:log_timeout(DefunctWorkers, "update_docs"), - {Health, _, Resp} = dict:fold(fun force_reply/3, {ok, W1, []}, - DocReplDict), - {Health, [R || R <- couch_util:reorder_results(AllDocs, Resp), R =/= noreply]}; - Else -> - Else - after - rexi_monitor:stop(RexiMon) - end. - -handle_message({rexi_DOWN, _, {_,NodeRef},_}, _Worker, Acc0) -> - {_, LenDocs, W, GroupedDocs, DocReplyDict} = Acc0, - NewGrpDocs = [X || {#shard{node=N}, _} = X <- GroupedDocs, N =/= NodeRef], - skip_message({length(NewGrpDocs), LenDocs, W, NewGrpDocs, DocReplyDict}); - -handle_message({rexi_EXIT, _}, Worker, Acc0) -> - {WC,LenDocs,W,GrpDocs,DocReplyDict} = Acc0, - NewGrpDocs = lists:keydelete(Worker,1,GrpDocs), - skip_message({WC-1,LenDocs,W,NewGrpDocs,DocReplyDict}); -handle_message(internal_server_error, Worker, Acc0) -> - % happens when we fail to load validation functions in an RPC worker - {WC,LenDocs,W,GrpDocs,DocReplyDict} = Acc0, - NewGrpDocs = lists:keydelete(Worker,1,GrpDocs), - skip_message({WC-1,LenDocs,W,NewGrpDocs,DocReplyDict}); -handle_message(attachment_chunk_received, _Worker, Acc0) -> - {ok, Acc0}; -handle_message({ok, Replies}, Worker, Acc0) -> - {WaitingCount, DocCount, W, GroupedDocs, DocReplyDict0} = Acc0, - {value, {_, Docs}, NewGrpDocs} = lists:keytake(Worker, 1, GroupedDocs), - DocReplyDict = append_update_replies(Docs, Replies, DocReplyDict0), - case {WaitingCount, dict:size(DocReplyDict)} of - {1, _} -> - % last message has arrived, we need to conclude things - {Health, W, Reply} = dict:fold(fun force_reply/3, {ok, W, []}, - DocReplyDict), - {stop, {Health, Reply}}; - {_, DocCount} -> - % we've got at least one reply for each document, let's take a look - case dict:fold(fun maybe_reply/3, {stop,W,[]}, DocReplyDict) of - continue -> - {ok, {WaitingCount - 1, DocCount, W, NewGrpDocs, DocReplyDict}}; - {stop, W, FinalReplies} -> - {stop, {ok, FinalReplies}} - end; - _ -> - {ok, {WaitingCount - 1, DocCount, W, NewGrpDocs, DocReplyDict}} - end; -handle_message({missing_stub, Stub}, _, _) -> - throw({missing_stub, Stub}); -handle_message({not_found, no_db_file} = X, Worker, Acc0) -> - {_, _, _, GroupedDocs, _} = Acc0, - Docs = couch_util:get_value(Worker, GroupedDocs), - handle_message({ok, [X || _D <- Docs]}, Worker, Acc0); -handle_message({bad_request, Msg}, _, _) -> - throw({bad_request, Msg}); -handle_message({request_entity_too_large, Entity}, _, _) -> - throw({request_entity_too_large, Entity}). - -before_doc_update(DbName, Docs, Opts) -> - case {fabric_util:is_replicator_db(DbName), fabric_util:is_users_db(DbName)} of - {true, _} -> - %% cluster db is expensive to create so we only do it if we have to - Db = fabric_util:open_cluster_db(DbName, Opts), - [couch_replicator_docs:before_doc_update(Doc, Db, replicated_changes) - || Doc <- Docs]; - {_, true} -> - %% cluster db is expensive to create so we only do it if we have to - Db = fabric_util:open_cluster_db(DbName, Opts), - [couch_users_db:before_doc_update(Doc, Db, interactive_edit) - || Doc <- Docs]; - _ -> - Docs - end. - -tag_docs([]) -> - []; -tag_docs([#doc{meta=Meta}=Doc | Rest]) -> - [Doc#doc{meta=[{ref, make_ref()} | Meta]} | tag_docs(Rest)]. - -untag_docs([]) -> - []; -untag_docs([#doc{meta=Meta}=Doc | Rest]) -> - [Doc#doc{meta=lists:keydelete(ref, 1, Meta)} | untag_docs(Rest)]. - -force_reply(Doc, [], {_, W, Acc}) -> - {error, W, [{Doc, {error, internal_server_error}} | Acc]}; -force_reply(Doc, [FirstReply|_] = Replies, {Health, W, Acc}) -> - case update_quorum_met(W, Replies) of - {true, Reply} -> - {Health, W, [{Doc,Reply} | Acc]}; - false -> - case [Reply || {ok, Reply} <- Replies] of - [] -> - % check if all errors are identical, if so inherit health - case lists:all(fun(E) -> E =:= FirstReply end, Replies) of - true -> - CounterKey = [fabric, doc_update, errors], - couch_stats:increment_counter(CounterKey), - {Health, W, [{Doc, FirstReply} | Acc]}; - false -> - CounterKey = [fabric, doc_update, mismatched_errors], - couch_stats:increment_counter(CounterKey), - {error, W, [{Doc, FirstReply} | Acc]} - end; - [AcceptedRev | _] -> - CounterKey = [fabric, doc_update, write_quorum_errors], - couch_stats:increment_counter(CounterKey), - NewHealth = case Health of ok -> accepted; _ -> Health end, - {NewHealth, W, [{Doc, {accepted,AcceptedRev}} | Acc]} - end - end. - -maybe_reply(_, _, continue) -> - % we didn't meet quorum for all docs, so we're fast-forwarding the fold - continue; -maybe_reply(Doc, Replies, {stop, W, Acc}) -> - case update_quorum_met(W, Replies) of - {true, Reply} -> - {stop, W, [{Doc, Reply} | Acc]}; - false -> - continue - end. - -update_quorum_met(W, Replies) -> - Counters = lists:foldl(fun(R,D) -> orddict:update_counter(R,1,D) end, - orddict:new(), Replies), - GoodReplies = lists:filter(fun good_reply/1, Counters), - case lists:dropwhile(fun({_, Count}) -> Count < W end, GoodReplies) of - [] -> - false; - [{FinalReply, _} | _] -> - {true, FinalReply} - end. - -good_reply({{ok, _}, _}) -> - true; -good_reply({noreply, _}) -> - true; -good_reply(_) -> - false. - --spec group_docs_by_shard(binary(), [#doc{}]) -> [{#shard{}, [#doc{}]}]. -group_docs_by_shard(DbName, Docs) -> - dict:to_list(lists:foldl(fun(#doc{id=Id} = Doc, D0) -> - lists:foldl(fun(Shard, D1) -> - dict:append(Shard, Doc, D1) - end, D0, mem3:shards(DbName,Id)) - end, dict:new(), Docs)). - -append_update_replies([], [], DocReplyDict) -> - DocReplyDict; -append_update_replies([Doc|Rest], [], Dict0) -> - % icky, if replicated_changes only errors show up in result - append_update_replies(Rest, [], dict:append(Doc, noreply, Dict0)); -append_update_replies([Doc|Rest1], [Reply|Rest2], Dict0) -> - append_update_replies(Rest1, Rest2, dict:append(Doc, Reply, Dict0)). - -skip_message({0, _, W, _, DocReplyDict}) -> - {Health, W, Reply} = dict:fold(fun force_reply/3, {ok, W, []}, DocReplyDict), - {stop, {Health, Reply}}; -skip_message(Acc0) -> - {ok, Acc0}. - -validate_atomic_update(_, _, false) -> - ok; -validate_atomic_update(_DbName, AllDocs, true) -> - % TODO actually perform the validation. This requires some hackery, we need - % to basically extract the prep_and_validate_updates function from couch_db - % and only run that, without actually writing in case of a success. - Error = {not_implemented, <<"all_or_nothing is not supported">>}, - PreCommitFailures = lists:map(fun(#doc{id=Id, revs = {Pos,Revs}}) -> - case Revs of [] -> RevId = <<>>; [RevId|_] -> ok end, - {{Id, {Pos, RevId}}, Error} - end, AllDocs), - throw({aborted, PreCommitFailures}). - - -%% -ifdef(TEST). -%% -include_lib("eunit/include/eunit.hrl"). -%% -%% -%% setup_all() -> -%% meck:new([couch_log, couch_stats]), -%% meck:expect(couch_log, warning, fun(_,_) -> ok end), -%% meck:expect(couch_stats, increment_counter, fun(_) -> ok end). -%% -%% -%% teardown_all(_) -> -%% meck:unload(). -%% -%% -%% doc_update_test_() -> -%% { -%% setup, -%% fun setup_all/0, -%% fun teardown_all/1, -%% [ -%% fun doc_update1/0, -%% fun doc_update2/0, -%% fun doc_update3/0 -%% ] -%% }. -%% -%% -%% % eunits -%% doc_update1() -> -%% Doc1 = #doc{revs = {1,[<<"foo">>]}}, -%% Doc2 = #doc{revs = {1,[<<"bar">>]}}, -%% Docs = [Doc1], -%% Docs2 = [Doc2, Doc1], -%% Dict = dict:from_list([{Doc,[]} || Doc <- Docs]), -%% Dict2 = dict:from_list([{Doc,[]} || Doc <- Docs2]), -%% -%% Shards = -%% mem3_util:create_partition_map("foo",3,1,["node1","node2","node3"]), -%% GroupedDocs = group_docs_by_shard_hack(<<"foo">>,Shards,Docs), -%% -%% -%% % test for W = 2 -%% AccW2 = {length(Shards), length(Docs), list_to_integer("2"), GroupedDocs, -%% Dict}, -%% -%% {ok,{WaitingCountW2_1,_,_,_,_}=AccW2_1} = -%% handle_message({ok, [{ok, Doc1}]},hd(Shards),AccW2), -%% ?assertEqual(WaitingCountW2_1,2), -%% {stop, FinalReplyW2 } = -%% handle_message({ok, [{ok, Doc1}]},lists:nth(2,Shards),AccW2_1), -%% ?assertEqual({ok, [{Doc1, {ok,Doc1}}]},FinalReplyW2), -%% -%% % test for W = 3 -%% AccW3 = {length(Shards), length(Docs), list_to_integer("3"), GroupedDocs, -%% Dict}, -%% -%% {ok,{WaitingCountW3_1,_,_,_,_}=AccW3_1} = -%% handle_message({ok, [{ok, Doc1}]},hd(Shards),AccW3), -%% ?assertEqual(WaitingCountW3_1,2), -%% -%% {ok,{WaitingCountW3_2,_,_,_,_}=AccW3_2} = -%% handle_message({ok, [{ok, Doc1}]},lists:nth(2,Shards),AccW3_1), -%% ?assertEqual(WaitingCountW3_2,1), -%% -%% {stop, FinalReplyW3 } = -%% handle_message({ok, [{ok, Doc1}]},lists:nth(3,Shards),AccW3_2), -%% ?assertEqual({ok, [{Doc1, {ok,Doc1}}]},FinalReplyW3), -%% -%% % test w quorum > # shards, which should fail immediately -%% -%% Shards2 = mem3_util:create_partition_map("foo",1,1,["node1"]), -%% GroupedDocs2 = group_docs_by_shard_hack(<<"foo">>,Shards2,Docs), -%% -%% AccW4 = -%% {length(Shards2), length(Docs), list_to_integer("2"), GroupedDocs2, Dict}, -%% Bool = -%% case handle_message({ok, [{ok, Doc1}]},hd(Shards2),AccW4) of -%% {stop, _Reply} -> -%% true; -%% _ -> false -%% end, -%% ?assertEqual(Bool,true), -%% -%% % Docs with no replies should end up as {error, internal_server_error} -%% SA1 = #shard{node=a, range=1}, -%% SB1 = #shard{node=b, range=1}, -%% SA2 = #shard{node=a, range=2}, -%% SB2 = #shard{node=b, range=2}, -%% GroupedDocs3 = [{SA1,[Doc1]}, {SB1,[Doc1]}, {SA2,[Doc2]}, {SB2,[Doc2]}], -%% StW5_0 = {length(GroupedDocs3), length(Docs2), 2, GroupedDocs3, Dict2}, -%% {ok, StW5_1} = handle_message({ok, [{ok, "A"}]}, SA1, StW5_0), -%% {ok, StW5_2} = handle_message({rexi_EXIT, nil}, SB1, StW5_1), -%% {ok, StW5_3} = handle_message({rexi_EXIT, nil}, SA2, StW5_2), -%% {stop, ReplyW5} = handle_message({rexi_EXIT, nil}, SB2, StW5_3), -%% ?assertEqual( -%% {error, [{Doc1,{accepted,"A"}},{Doc2,{error,internal_server_error}}]}, -%% ReplyW5 -%% ). -%% -%% doc_update2() -> -%% Doc1 = #doc{revs = {1,[<<"foo">>]}}, -%% Doc2 = #doc{revs = {1,[<<"bar">>]}}, -%% Docs = [Doc2, Doc1], -%% Shards = -%% mem3_util:create_partition_map("foo",3,1,["node1","node2","node3"]), -%% GroupedDocs = group_docs_by_shard_hack(<<"foo">>,Shards,Docs), -%% Acc0 = {length(Shards), length(Docs), list_to_integer("2"), GroupedDocs, -%% dict:from_list([{Doc,[]} || Doc <- Docs])}, -%% -%% {ok,{WaitingCount1,_,_,_,_}=Acc1} = -%% handle_message({ok, [{ok, Doc1},{ok, Doc2}]},hd(Shards),Acc0), -%% ?assertEqual(WaitingCount1,2), -%% -%% {ok,{WaitingCount2,_,_,_,_}=Acc2} = -%% handle_message({rexi_EXIT, 1},lists:nth(2,Shards),Acc1), -%% ?assertEqual(WaitingCount2,1), -%% -%% {stop, Reply} = -%% handle_message({rexi_EXIT, 1},lists:nth(3,Shards),Acc2), -%% -%% ?assertEqual({accepted, [{Doc1,{accepted,Doc2}}, {Doc2,{accepted,Doc1}}]}, -%% Reply). -%% -%% doc_update3() -> -%% Doc1 = #doc{revs = {1,[<<"foo">>]}}, -%% Doc2 = #doc{revs = {1,[<<"bar">>]}}, -%% Docs = [Doc2, Doc1], -%% Shards = -%% mem3_util:create_partition_map("foo",3,1,["node1","node2","node3"]), -%% GroupedDocs = group_docs_by_shard_hack(<<"foo">>,Shards,Docs), -%% Acc0 = {length(Shards), length(Docs), list_to_integer("2"), GroupedDocs, -%% dict:from_list([{Doc,[]} || Doc <- Docs])}, -%% -%% {ok,{WaitingCount1,_,_,_,_}=Acc1} = -%% handle_message({ok, [{ok, Doc1},{ok, Doc2}]},hd(Shards),Acc0), -%% ?assertEqual(WaitingCount1,2), -%% -%% {ok,{WaitingCount2,_,_,_,_}=Acc2} = -%% handle_message({rexi_EXIT, 1},lists:nth(2,Shards),Acc1), -%% ?assertEqual(WaitingCount2,1), -%% -%% {stop, Reply} = -%% handle_message({ok, [{ok, Doc1},{ok, Doc2}]},lists:nth(3,Shards),Acc2), -%% -%% ?assertEqual({ok, [{Doc1, {ok, Doc2}},{Doc2, {ok,Doc1}}]},Reply). -%% -%% % needed for testing to avoid having to start the mem3 application -%% group_docs_by_shard_hack(_DbName, Shards, Docs) -> -%% dict:to_list(lists:foldl(fun(#doc{id=_Id} = Doc, D0) -> -%% lists:foldl(fun(Shard, D1) -> -%% dict:append(Shard, Doc, D1) -%% end, D0, Shards) -%% end, dict:new(), Docs)). -%% -%% -endif. |