http_errors.erl 1.3 KB

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  1. %% Feel free to use, reuse and abuse the code in this file.
  2. -module(http_errors).
  3. -behaviour(cowboy_http_handler).
  4. -export([init/3, handle/2, terminate/3]).
  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. cowboy_error_h:ignore(?MODULE, case_init, 2),
  10. erlang:error(Case);
  11. case_init(<<"init_after_reply">> = Case, Req) ->
  12. cowboy_error_h:ignore(?MODULE, case_init, 2),
  13. {ok, _Req1} = cowboy_req:reply(200, [], "http_handler_crashes", Req),
  14. erlang:error(Case);
  15. case_init(<<"init_reply_handle_error">> = Case, Req) ->
  16. {ok, Req1} = cowboy_req:reply(200, [], "http_handler_crashes", Req),
  17. {ok, Req1, Case};
  18. case_init(<<"handle_before_reply">> = Case, Req) ->
  19. {ok, Req, Case};
  20. case_init(<<"handle_after_reply">> = Case, Req) ->
  21. {ok, Req, Case}.
  22. handle(_Req, <<"init_reply_handle_error">> = Case) ->
  23. cowboy_error_h:ignore(?MODULE, handle, 2),
  24. erlang:error(Case);
  25. handle(_Req, <<"handle_before_reply">> = Case) ->
  26. cowboy_error_h:ignore(?MODULE, handle, 2),
  27. erlang:error(Case);
  28. handle(Req, <<"handle_after_reply">> = Case) ->
  29. cowboy_error_h:ignore(?MODULE, handle, 2),
  30. {ok, _Req1} = cowboy_req:reply(200, [], "http_handler_crashes", Req),
  31. erlang:error(Case).
  32. terminate(_, _, _) ->
  33. ok.