%%
%% %CopyrightBegin%
%%
%% Copyright Ericsson AB 2009-2010. All Rights Reserved.
%%
%% The contents of this file are subject to the Erlang Public License,
%% Version 1.1, (the "License"); you may not use this file except in
%% compliance with the License. You should have received a copy of the
%% Erlang Public License along with this software. If not, it can be
%% retrieved online at http://www.erlang.org/.
%%
%% Software distributed under the License is distributed on an "AS IS"
%% basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See
%% the License for the specific language governing rights and limitations
%% under the License.
%%
%% %CopyrightEnd%
%%
%%--------------------------------------------------------------------
%% File : ssh_connection_controler.erl
%% Description :
%%
%%--------------------------------------------------------------------
-module(ssh_connection_controler).
-behaviour(gen_server).
%%-----------------------------------------------------------------
%% External exports
%%-----------------------------------------------------------------
-export([start_link/1, start_handler_child/2, start_manager_child/2,
connection_manager/1]).
%%-----------------------------------------------------------------
%% Internal exports
%%-----------------------------------------------------------------
-export([init/1, handle_call/3, handle_cast/2, handle_info/2,
code_change/3, terminate/2, stop/1]).
-record(state, {role, manager, handler, timeout}).
%%-----------------------------------------------------------------
%% External interface functions
%%-----------------------------------------------------------------
%%-----------------------------------------------------------------
%% Func: start/0
%%-----------------------------------------------------------------
start_link(Args) ->
gen_server:start_link(?MODULE, [Args], []).
%% Will be called from the manager child process
start_handler_child(ServerRef, Args) ->
gen_server:call(ServerRef, {handler, self(), Args}, infinity).
%% Will be called from the acceptor process
start_manager_child(ServerRef, Args) ->
gen_server:call(ServerRef, {manager, Args}, infinity).
connection_manager(ServerRef) ->
{ok, gen_server:call(ServerRef, manager, infinity)}.
%%-----------------------------------------------------------------
%% Internal interface functions
%%-----------------------------------------------------------------
%%-----------------------------------------------------------------
%% Func: stop/1
%%-----------------------------------------------------------------
stop(Pid) ->
gen_server:cast(Pid, stop).
%%-----------------------------------------------------------------
%% Server functions
%%-----------------------------------------------------------------
%%-----------------------------------------------------------------
%% Func: init/1
%%-----------------------------------------------------------------
init([Opts]) ->
process_flag(trap_exit, true),
case proplists:get_value(role, Opts) of
client ->
{ok, Manager} = ssh_connection_manager:start_link([client, Opts]),
{ok, #state{role = client, manager = Manager}};
_server ->
%% Children started by acceptor process
{ok, #state{role = server}}
end.
%%-----------------------------------------------------------------
%% Func: terminate/2
%%-----------------------------------------------------------------
terminate(_Reason, #state{}) ->
ok.
%%-----------------------------------------------------------------
%% Func: handle_call/3
%%-----------------------------------------------------------------
handle_call({handler, Pid, [Role, Socket, Opts]}, _From, State) ->
{ok, Handler} = ssh_connection_handler:start_link(Role, Pid, Socket, Opts),
{reply, {ok, Handler}, State#state{handler = Handler}};
handle_call({manager, [server = Role, Socket, Opts, SubSysSup]}, _From, State) ->
{ok, Manager} = ssh_connection_manager:start_link([Role, Socket, Opts, SubSysSup]),
{reply, {ok, Manager}, State#state{manager = Manager}};
handle_call({manager, [client = Role | Opts]}, _From, State) ->
{ok, Manager} = ssh_connection_manager:start_link([Role, Opts]),
{reply, {ok, Manager}, State#state{manager = Manager}};
handle_call(manager, _From, State) ->
{reply, State#state.manager, State};
handle_call(stop, _From, State) ->
{stop, normal, ok, State};
handle_call(_, _, State) ->
{noreply, State, State#state.timeout}.
%%-----------------------------------------------------------------
%% Func: handle_cast/2
%%-----------------------------------------------------------------
handle_cast(stop, State) ->
{stop, normal, State};
handle_cast(_, State) ->
{noreply, State, State#state.timeout}.
%%-----------------------------------------------------------------
%% Func: handle_info/2
%%-----------------------------------------------------------------
%% handle_info(ssh_connected, State) ->
%% {stop, normal, State};
%% Servant termination.
handle_info({'EXIT', _Pid, Reason}, State) ->
{stop, Reason, State}.
%%-----------------------------------------------------------------
%% Func: code_change/3
%%-----------------------------------------------------------------
code_change(_OldVsn, State, _Extra) ->
{ok, State}.
