Рефакторинг обработчиков. Часть 1 #21

src/handlers/admin/admin_handler_health.erl

@@ -1,18 +1,36 @@
 -module(admin_handler_health).
 -behaviour(cowboy_handler).
--export([init/2]).
 
-init(Req, State) ->
+-export([init/2]).
+-export([trails/0]).
+
+%%% cowboy_handler callback
+init(Req, _State) ->
   case cowboy_req:method(Req) of
     <<"GET">> ->
-      Body = jsx:encode(#{status => <<"ok">>}),
-      Req2 = cowboy_req:reply(200, #{<<"content-type">> => <<"application/json">>}, Body, Req),
-      {ok, Req2, State};
+      handler_utils:send_json(Req, 200, #{status => <<"ok">>});
     _ ->
-      send_error(Req, 405, <<"Method not allowed">>)
+      handler_utils:send_error(Req, 405, <<"Method not allowed">>)
   end.
 
-send_error(Req, Status, Message) ->
-  Body = jsx:encode(#{error => Message}),
-  Req2 = cowboy_req:reply(Status, #{<<"content-type">> => <<"application/json">>}, Body, Req),
-  {ok, Req2, []}.
+%%% Swagger metadata
+trails() ->
+  [
+    #{
+      path        => <<"/v1/admin/health">>,
+      method      => <<"GET">>,
+      description => <<"Admin API health check">>,
+      tags        => [<<"Health">>],
+      responses   => #{
+        200 => #{
+          description => <<"API is healthy">>,
+          content     => #{<<"application/json">> => #{schema => #{
+            type       => object,
+            properties => #{
+              status => #{type => string}
+            }
+          }}}
+        }
+      }
+    }
+  ].