  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
%
%   -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").

-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
]).

handle_stats_req(#httpd{method='GET', path_parts=[_]}=Req) ->
    flush(Req),
    send_json(Req, couch_stats_aggregator:all(range(Req)));

handle_stats_req(#httpd{method='GET', path_parts=[_, _Mod]}) ->
    throw({bad_request, <<"Stat names must have exactly to parts.">>});

handle_stats_req(#httpd{method='GET', path_parts=[_, Mod, Key]}=Req) ->
    flush(Req),
    Stats = couch_stats_aggregator:get_json({list_to_atom(binary_to_list(Mod)),
        list_to_atom(binary_to_list(Key))}, range(Req)),
    send_json(Req, {[{Mod, {[{Key, Stats}]}}]});

handle_stats_req(#httpd{method='GET', path_parts=[_, _Mod, _Key | _Extra]}) ->
    throw({bad_request, <<"Stat names must have exactly two parts.">>});

handle_stats_req(Req) ->
    send_method_not_allowed(Req, "GET").

range(Req) ->
    case couch_util:get_value("range", couch_httpd:qs(Req)) of
        undefined ->
            0;
        Value ->
            list_to_integer(Value)
    end.

flush(Req) ->
    case couch_util:get_value("flush", couch_httpd:qs(Req)) of
        "true" ->
            couch_stats_aggregator:collect_sample();
        _Else ->
            ok
    end.

 use this file except in compliance with the License. You may obtain a copy of
 the License at

   -2.0

 Unless required by applicable law or agreed to in writing, software
 WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
 License for the specific language governing permissions and limitations under
 the License.
  Licensed under the Apache License , Version 2.0 ( the " License " ) ; you may not
  distributed under the License is distributed on an " AS IS " BASIS , WITHOUT

-module(couch_httpd_stats_handlers).
-include("couch_db.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
]).

handle_stats_req(#httpd{method='GET', path_parts=[_]}=Req) ->
    flush(Req),
    send_json(Req, couch_stats_aggregator:all(range(Req)));

handle_stats_req(#httpd{method='GET', path_parts=[_, _Mod]}) ->
    throw({bad_request, <<"Stat names must have exactly to parts.">>});

handle_stats_req(#httpd{method='GET', path_parts=[_, Mod, Key]}=Req) ->
    flush(Req),
    Stats = couch_stats_aggregator:get_json({list_to_atom(binary_to_list(Mod)),
        list_to_atom(binary_to_list(Key))}, range(Req)),
    send_json(Req, {[{Mod, {[{Key, Stats}]}}]});

handle_stats_req(#httpd{method='GET', path_parts=[_, _Mod, _Key | _Extra]}) ->
    throw({bad_request, <<"Stat names must have exactly two parts.">>});

handle_stats_req(Req) ->
    send_method_not_allowed(Req, "GET").

range(Req) ->
    case couch_util:get_value("range", couch_httpd:qs(Req)) of
        undefined ->
            0;
        Value ->
            list_to_integer(Value)
    end.

flush(Req) ->
    case couch_util:get_value("flush", couch_httpd:qs(Req)) of
        "true" ->
            couch_stats_aggregator:collect_sample();
        _Else ->
            ok
    end.
