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Add cowboy:set_env/3

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This commit is contained in:
Loïc Hoguin 2013-02-20 12:14:21 +01:00
parent 76b5cfea3f
commit b2ffff9bec
5 changed files with 63 additions and 4 deletions
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14
src/cowboy.erl
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@ -18,6 +18,7 @@
-export([start_http/4]).
-export([start_https/4]).
-export([stop_listener/1]).
-export([set_env/3]).
%% @doc Start an HTTP listener.
-spec start_http(any(), non_neg_integer(), any(), any()) -> {ok, pid()}.
@ -37,3 +38,16 @@ start_https(Ref, NbAcceptors, TransOpts, ProtoOpts)
-spec stop_listener(any()) -> ok.
stop_listener(Ref) ->
ranch:stop_listener(Ref).
%% @doc Convenience function for setting an environment value.
%%
%% Allows you to update live an environment value used by middlewares.
%% This function is primarily intended to simplify updating the dispatch
%% list used for routing.
-spec set_env(any(), atom(), any()) -> ok.
set_env(Ref, Name, Value) ->
Opts = ranch:get_protocol_options(Ref),
{_, Env} = lists:keyfind(env, 1, Opts),
Env2 = [{Name, Value}|lists:keydelete(Name, 1, Env)],
Opts2 = lists:keyreplace(env, 1, Opts, {env, Env2}),
ok = ranch:set_protocol_options(Ref, Opts2).