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authorLoïc Hoguin <[email protected]>2014-09-30 20:12:13 +0300
committerLoïc Hoguin <[email protected]>2014-09-30 20:12:13 +0300
commit0dc063ab7d94edb37c61f821b5d8e4c2da7f8ff1 (patch)
treeaaa71b552b0348fc403cc68ba8318e58f213d4fd /src/cowboy_http_handler.erl
parent5ce4c2bfb40ecc4b687a2941e612025a1c4ff913 (diff)
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Improve handler interface and documentation
This change simplifies a little more the sub protocols mechanism. Aliases have been removed. The renaming of loop handlers as long polling handlers has been reverted. Plain HTTP handlers now simply do their work in the init/2 callback. There is no specific code for them. Loop handlers now follow the same return value as Websocket, they use ok to continue and shutdown to stop. Terminate reasons for all handler types have been documented. The terminate callback is now appropriately called in all cases (or should be). Behaviors for all handler types have been moved in the module that implement them. This means that cowboy_handler replaces the cowboy_http_handler behavior, and similarly cowboy_loop replaces cowboy_loop_handler, cowboy_websocket replaces cowboy_websocket_handler. Finally cowboy_rest now has the start of a behavior in it and will have the full list of optional callbacks defined once Erlang 18.0 gets released. The guide has been reorganized and should be easier to follow.
Diffstat (limited to 'src/cowboy_http_handler.erl')
-rw-r--r--src/cowboy_http_handler.erl36
1 files changed, 0 insertions, 36 deletions
diff --git a/src/cowboy_http_handler.erl b/src/cowboy_http_handler.erl
deleted file mode 100644
index 75b41d2..0000000
--- a/src/cowboy_http_handler.erl
+++ /dev/null
@@ -1,36 +0,0 @@
-%% Copyright (c) 2011-2014, Loïc Hoguin <[email protected]>
-%%
-%% Permission to use, copy, modify, and/or distribute this software for any
-%% purpose with or without fee is hereby granted, provided that the above
-%% copyright notice and this permission notice appear in all copies.
-%%
-%% THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
-%% WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
-%% MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
-%% ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
-%% WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
-%% ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
-%% OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
-
--module(cowboy_http_handler).
-
--type opts() :: any().
--type state() :: any().
-%% @todo see terminate
-%-type terminate_reason() :: {normal, shutdown}
-% | {normal, timeout} %% Only occurs in loop handlers.
-% | {error, closed} %% Only occurs in loop handlers.
-% | {error, overflow} %% Only occurs in loop handlers.
-% | {error, atom()}.
-
--callback init(Req, opts())
- -> {http, Req, state()}
- | {long_polling | rest | ws | module(), Req, state()}
- | {long_polling | rest | ws | module(), Req, state(), hibernate}
- | {long_polling | rest | ws | module(), Req, state(), timeout()}
- | {long_polling | rest | ws | module(), Req, state(), timeout(), hibernate}
- | {shutdown, Req, state()}
- when Req::cowboy_req:req().
--callback handle(Req, State) -> {ok, Req, State}
- when Req::cowboy_req:req(), State::state().
-%% @todo optional -callback terminate(terminate_reason(), cowboy_req:req(), state()) -> ok.