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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(couch_httpd_stats_handlers).
-include("couch_db.hrl").
-include("couch_stats.hrl").
-export([handle_stats_req/1]).
-import(couch_httpd,
[send_json/2,send_json/3,send_json/4,send_method_not_allowed/2,
start_json_response/2,send_chunk/2,end_json_response/1,
start_chunked_response/3, send_error/4]).
-define(b2a(V), list_to_atom(binary_to_list(V))).
handle_stats_req(#httpd{method='GET', path_parts=[_]}=Req) ->
send_json(Req, couch_stats_aggregator:all());
handle_stats_req(#httpd{method='GET', path_parts=[_Stats, Module, Key]}=Req) ->
Time = parse_stats_query(Req),
Stats = couch_stats_aggregator:get_json({?b2a(Module), ?b2a(Key)}, Time),
Response = {[{Module, {[{Key, Stats}]}}]},
send_json(Req, Response);
handle_stats_req(Req) ->
send_method_not_allowed(Req, "GET").
parse_stats_query(Req) ->
case couch_httpd:qs(Req) of
[{"range", Time}] -> list_to_atom(Time);
_ -> '0'
end.
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