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-rw-r--r--src/cowboy_rest.erl29
-rw-r--r--test/http_SUITE.erl18
-rw-r--r--test/rest_patch_resource.erl34
3 files changed, 80 insertions, 1 deletions
diff --git a/src/cowboy_rest.erl b/src/cowboy_rest.erl
index 6816303..fb7f2e1 100644
--- a/src/cowboy_rest.erl
+++ b/src/cowboy_rest.erl
@@ -91,7 +91,8 @@ known_methods(Req, State=#state{method=Method}) ->
no_call when Method =:= <<"HEAD">>; Method =:= <<"GET">>;
Method =:= <<"POST">>; Method =:= <<"PUT">>;
Method =:= <<"DELETE">>; Method =:= <<"TRACE">>;
- Method =:= <<"CONNECT">>; Method =:= <<"OPTIONS">> ->
+ Method =:= <<"CONNECT">>; Method =:= <<"OPTIONS">>;
+ Method =:= <<"PATCH">> ->
next(Req, State, fun uri_too_long/2);
no_call ->
next(Req, State, 501);
@@ -644,6 +645,8 @@ method(Req, State=#state{method= <<"POST">>}) ->
post_is_create(Req, State);
method(Req, State=#state{method= <<"PUT">>}) ->
is_conflict(Req, State);
+method(Req, State=#state{method= <<"PATCH">>}) ->
+ patch_resource(Req, State);
method(Req, State=#state{method=Method})
when Method =:= <<"GET">>; Method =:= <<"HEAD">> ->
set_resp_body(Req, State);
@@ -708,6 +711,9 @@ put_resource(Req, State) ->
%% may be different from the request path, and is stored as request metadata.
%% It is always defined past this point. It can be retrieved as demonstrated:
%% {PutPath, Req2} = cowboy_req:meta(put_path, Req)
+%%
+%%content_types_accepted SHOULD return a different list
+%% for each HTTP method.
put_resource(Req, State, OnTrue) ->
case call(Req, State, content_types_accepted) of
no_call ->
@@ -722,6 +728,27 @@ put_resource(Req, State, OnTrue) ->
choose_content_type(Req3, State2, OnTrue, ContentType, CTA2)
end.
+%% content_types_accepted should return a list of media types and their
+%% associated callback functions in the same format as content_types_provided.
+%%
+%% The callback will then be called and is expected to process the content
+%% pushed to the resource in the request body.
+%%
+%% content_types_accepted SHOULD return a different list
+%% for each HTTP method.
+patch_resource(Req, State) ->
+ case call(Req, State, content_types_accepted) of
+ no_call ->
+ respond(Req, State, 415);
+ {halt, Req2, HandlerState} ->
+ terminate(Req2, State#state{handler_state=HandlerState});
+ {CTM, Req2, HandlerState} ->
+ State2 = State#state{handler_state=HandlerState},
+ {ok, ContentType, Req3}
+ = cowboy_req:parse_header(<<"content-type">>, Req2),
+ choose_content_type(Req3, State2, 204, ContentType, CTM)
+ end.
+
%% The special content type '*' will always match. It can be used as a
%% catch-all content type for accepting any kind of request content.
%% Note that because it will always match, it should be the last of the
diff --git a/test/http_SUITE.erl b/test/http_SUITE.erl
index 25ce595..0029f6f 100644
--- a/test/http_SUITE.erl
+++ b/test/http_SUITE.erl
@@ -56,6 +56,7 @@
-export([rest_missing_get_callbacks/1]).
-export([rest_missing_put_callbacks/1]).
-export([rest_nodelete/1]).
+-export([rest_patch/1]).
-export([rest_resource_etags/1]).
-export([rest_resource_etags_if_none_match/1]).
-export([set_resp_body/1]).
@@ -116,6 +117,7 @@ groups() ->
rest_missing_get_callbacks,
rest_missing_put_callbacks,
rest_nodelete,
+ rest_patch,
rest_resource_etags,
rest_resource_etags_if_none_match,
set_resp_body,
@@ -329,6 +331,7 @@ init_dispatch(Config) ->
{"/missing_get_callbacks", rest_missing_callbacks, []},
{"/missing_put_callbacks", rest_missing_callbacks, []},
{"/nodelete", rest_nodelete_resource, []},
+ {"/patch", rest_patch_resource, []},
{"/resetags", rest_resource_etags, []},
{"/rest_expires", rest_expires, []},
{"/loop_timeout", http_handler_loop_timeout, []},
@@ -832,6 +835,21 @@ rest_nodelete(Config) ->
build_url("/nodelete", Config), Client),
{ok, 500, _, _} = cowboy_client:response(Client2).
+rest_patch(Config) ->
+ Tests = [
+ {204, [{<<"content-type">>, <<"text/plain">>}], <<"whatever">>},
+ {500, [{<<"content-type">>, <<"text/plain">>}], <<"false">>},
+ {400, [{<<"content-type">>, <<"text/plain">>}], <<"halt">>},
+ {415, [{<<"content-type">>, <<"application/json">>}], <<"bad_content_type">>}
+ ],
+ Client = ?config(client, Config),
+ _ = [begin
+ {ok, Client2} = cowboy_client:request(<<"PATCH">>,
+ build_url("/patch", Config), Headers, Body, Client),
+ {ok, Status, _, _} = cowboy_client:response(Client2),
+ ok
+ end || {Status, Headers, Body} <- Tests].
+
rest_resource_get_etag(Config, Type) ->
rest_resource_get_etag(Config, Type, []).
diff --git a/test/rest_patch_resource.erl b/test/rest_patch_resource.erl
new file mode 100644
index 0000000..e265f6f
--- /dev/null
+++ b/test/rest_patch_resource.erl
@@ -0,0 +1,34 @@
+-module(rest_patch_resource).
+-export([init/3, allowed_methods/2, content_types_provided/2, get_text_plain/2,
+ content_types_accepted/2, patch_text_plain/2]).
+
+init(_Transport, _Req, _Opts) ->
+ {upgrade, protocol, cowboy_rest}.
+
+allowed_methods(Req, State) ->
+ {[<<"HEAD">>, <<"GET">>, <<"PATCH">>], Req, State}.
+
+content_types_provided(Req, State) ->
+ {[{{<<"text">>, <<"plain">>, []}, get_text_plain}], Req, State}.
+
+get_text_plain(Req, State) ->
+ {<<"This is REST!">>, Req, State}.
+
+content_types_accepted(Req, State) ->
+ case cowboy_req:method(Req) of
+ {<<"PATCH">>, Req0} ->
+ {[{{<<"text">>, <<"plain">>, []}, patch_text_plain}], Req0, State};
+ {_, Req0} ->
+ {[], Req0, State}
+ end.
+
+patch_text_plain(Req, State) ->
+ case cowboy_req:body(Req) of
+ {ok, <<"halt">>, Req0} ->
+ {ok, Req1} = cowboy_req:reply(400, Req0),
+ {halt, Req1, State};
+ {ok, <<"false">>, Req0} ->
+ {false, Req0, State};
+ {ok, _Body, Req0} ->
+ {true, Req0, State}
+ end.