| % 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_db_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_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_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. |