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% 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_design_doc_count).
-export([go/1]).
-include_lib("fabric/include/fabric.hrl").
-include_lib("mem3/include/mem3.hrl").
-include_lib("couch/include/couch_db.hrl").
go(DbName) ->
Shards = mem3:shards(DbName),
Workers = fabric_util:submit_jobs(Shards, get_design_doc_count, []),
RexiMon = fabric_util:create_monitors(Shards),
Acc0 = {fabric_dict:init(Workers, nil), []},
try fabric_util:recv(Workers, #shard.ref, fun handle_message/3, Acc0) of
{timeout, {WorkersDict, _}} ->
DefunctWorkers = fabric_util:remove_done_workers(WorkersDict, nil),
fabric_util:log_timeout(DefunctWorkers, "get_design_doc_count"),
{error, timeout};
Else ->
Else
after
rexi_monitor:stop(RexiMon)
end.
handle_message({rexi_DOWN, _, {_, NodeRef}, _}, _Shard, {Counters, Resps}) ->
case fabric_ring:node_down(NodeRef, Counters, Resps) of
{ok, Counters1} -> {ok, {Counters1, Resps}};
error -> {error, {nodedown, <<"progress not possible">>}}
end;
handle_message({rexi_EXIT, Reason}, Shard, {Counters, Resps}) ->
case fabric_ring:handle_error(Shard, Counters, Resps) of
{ok, Counters1} -> {ok, {Counters1, Resps}};
error -> {error, Reason}
end;
handle_message({ok, Count}, Shard, {Counters, Resps}) ->
case fabric_ring:handle_response(Shard, Count, Counters, Resps) of
{ok, {Counters1, Resps1}} ->
{ok, {Counters1, Resps1}};
{stop, Resps1} ->
Total = fabric_dict:fold(fun(_, C, A) -> A + C end, 0, Resps1),
{stop, Total}
end;
handle_message(Reason, Shard, {Counters, Resps}) ->
case fabric_ring:handle_error(Shard, Counters, Resps) of
{ok, Counters1} -> {ok, {Counters1, Resps}};
error -> {error, Reason}
end.
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