http_handler_errors.erl 1.1 KB

12345678910111213141516171819202122232425262728293031323334353637383940
  1. %% Feel free to use, reuse and abuse the code in this file.
  2. -module(http_handler_errors).
  3. -behaviour(cowboy_http_handler).
  4. -export([init/3, handle/2, terminate/2]).
  5. init({_Transport, http}, Req, _Opts) ->
  6. {Case, Req1} = cowboy_req:qs_val(<<"case">>, Req),
  7. case_init(Case, Req1).
  8. case_init(<<"init_before_reply">> = Case, _Req) ->
  9. erlang:error(Case);
  10. case_init(<<"init_after_reply">> = Case, Req) ->
  11. {ok, _Req1} = cowboy_req:reply(200, [], "http_handler_crashes", Req),
  12. erlang:error(Case);
  13. case_init(<<"init_reply_handle_error">> = Case, Req) ->
  14. {ok, Req1} = cowboy_req:reply(200, [], "http_handler_crashes", Req),
  15. {ok, Req1, Case};
  16. case_init(<<"handle_before_reply">> = Case, Req) ->
  17. {ok, Req, Case};
  18. case_init(<<"handle_after_reply">> = Case, Req) ->
  19. {ok, Req, Case}.
  20. handle(_Req, <<"init_reply_handle_error">> = Case) ->
  21. erlang:error(Case);
  22. handle(_Req, <<"handle_before_reply">> = Case) ->
  23. erlang:error(Case);
  24. handle(Req, <<"handle_after_reply">> = Case) ->
  25. {ok, _Req1} = cowboy_req:reply(200, [], "http_handler_crashes", Req),
  26. erlang:error(Case).
  27. terminate(_Req, _State) ->
  28. ok.