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GGS/src/ggs_server.erl
2011-01-25 14:41:11 +01:00

97 lines
2.6 KiB
Erlang

%%%----------------------------------------------------
%%% @author Jonatan Pålsson <Jonatan.p@gmail.com>
%%% @copyright 2010 Jonatan Pålsson
%%% @doc RPC over TCP server
%%% @end
%%%----------------------------------------------------
-module(ggs_server).
-behaviour(gen_server).
%% API
-export([start_link/1,
start_link/0,
get_count/0,
stop/0
]).
%% gen_server callbacks
-export([init/1, handle_call/3, handle_cast/2,
handle_info/2, terminate/2, code_change/3]).
-define(SERVER, ?MODULE).
-define(DEFAULT_PORT, 1055).
-record(state, {port, lsock, request_count = 0}).
%%%====================================================
%%% API
%%%====================================================
%%-----------------------------------------------------
%% @doc Starts the server
%% @end
%%-----------------------------------------------------
start_link(Port) ->
gen_server:start_link({local, ?SERVER}, ?MODULE, [Port], []).
start_link() ->
start_link(?DEFAULT_PORT).
%%-----------------------------------------------------
%% @doc Fetches the number of requests made to this server
%% @spec get_count() -> {ok, Count}
%% where
%% Count = integer()
%% @end
%%-----------------------------------------------------
get_count() ->
gen_server:call(?SERVER, get_count).
%%-----------------------------------------------------
%% @doc Stops the server.
%% @spec stop() -> ok
%% @end
%%-----------------------------------------------------
stop() ->
gen_server:cast(?SERVER, stop).
%%-----------------------------------------------------
%% gen_server callbacks
%%-----------------------------------------------------
init([Port]) ->
{ok, LSock} = gen_tcp:listen(Port, [{active, true}]),
{ok, #state{port = Port, lsock = LSock}, 0}.
handle_call(get_count, _From, State) ->
{reply, {ok, State#state.request_count}, State}.
handle_cast(stop, State) ->
{stop, normal, State}.
handle_info({tcp, Socket, RawData}, State) ->
do_JSCall(Socket, RawData),
RequestCount = State#state.request_count,
{noreply, State#state{request_count = RequestCount + 1}};
handle_info(timeout, #state{lsock = LSock} = State) ->
{ok, _Sock} = gen_tcp:accept(LSock),
{noreply, State}.
terminate(_Reason, _State) ->
ok.
code_change(_OldVsn, State, _Extra) ->
{ok, State}.
%%-----------------------------------------------------
%% Internal functions
%%-----------------------------------------------------
do_JSCall(Socket, Data) ->
io:format("Data: ~p", [Data]),
Port = js_runner:boot(),
Ret = js_runner:executeJS(Port, Data),
gen_tcp:send(Socket, io_lib:fwrite("~p~n", [Ret])).