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+%%
+%% %CopyrightBegin%
+%%
+%% Copyright Ericsson AB 2008-2012. 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%
+%%
+%%
+%%----------------------------------------------------------------------
+%% Purpose: Ssh connection supervisor.
+%%----------------------------------------------------------------------
+
+-module(ssh_connection_sup).
+
+-behaviour(supervisor).
+
+-export([start_link/1, start_handler_child/2, start_manager_child/2,
+ connection_manager/1]).
+
+%% Supervisor callback
+-export([init/1]).
+
+%%%=========================================================================
+%%% API
+%%%=========================================================================
+start_link(Args) ->
+ supervisor:start_link(?MODULE, [Args]).
+
+%% Will be called from the manager child process
+start_handler_child(Sup, Args) ->
+ [Spec] = child_specs(handler, Args),
+ supervisor:start_child(Sup, Spec).
+
+%% Will be called from the acceptor process
+start_manager_child(Sup, Args) ->
+ [Spec] = child_specs(manager, Args),
+ supervisor:start_child(Sup, Spec).
+
+connection_manager(SupPid) ->
+ Children = supervisor:which_children(SupPid),
+ {ok, ssh_connection_manager(Children)}.
+
+%%%=========================================================================
+%%% Supervisor callback
+%%%=========================================================================
+init([Args]) ->
+ RestartStrategy = one_for_all,
+ MaxR = 0,
+ MaxT = 3600,
+ Children = child_specs(Args),
+ {ok, {{RestartStrategy, MaxR, MaxT}, Children}}.
+
+%%%=========================================================================
+%%% Internal functions
+%%%=========================================================================
+child_specs(Opts) ->
+ case proplists:get_value(role, Opts) of
+ client ->
+ child_specs(manager, [client | Opts]);
+ server ->
+ %% Children started by acceptor process
+ []
+ end.
+
+% The manager process starts the handler process
+child_specs(manager, Opts) ->
+ [manager_spec(Opts)];
+child_specs(handler, Opts) ->
+ [handler_spec(Opts)].
+
+manager_spec([server = Role, Socket, Opts]) ->
+ Name = make_ref(),
+ StartFunc = {ssh_connection_manager, start_link, [[Role, Socket, Opts]]},
+ Restart = temporary,
+ Shutdown = 3600,
+ Modules = [ssh_connection_manager],
+ Type = worker,
+ {Name, StartFunc, Restart, Shutdown, Type, Modules};
+
+manager_spec([client = Role | Opts]) ->
+ Name = make_ref(),
+ StartFunc = {ssh_connection_manager, start_link, [[Role, Opts]]},
+ Restart = temporary,
+ Shutdown = 3600,
+ Modules = [ssh_connection_manager],
+ Type = worker,
+ {Name, StartFunc, Restart, Shutdown, Type, Modules}.
+
+handler_spec([Role, Socket, Opts]) ->
+ Name = make_ref(),
+ StartFunc = {ssh_connection_handler,
+ start_link, [Role, self(), Socket, Opts]},
+ Restart = temporary,
+ Shutdown = 3600,
+ Modules = [ssh_connection_handler],
+ Type = worker,
+ {Name, StartFunc, Restart, Shutdown, Type, Modules}.
+
+ssh_connection_manager([{_, Child, _, [ssh_connection_manager]} | _]) ->
+ Child;
+ssh_connection_manager([_ | Rest]) ->
+ ssh_connection_manager(Rest).