%%
%% %CopyrightBegin%
%%
%% Copyright Ericsson AB 2008-2017. All Rights Reserved.
%%
%% Licensed under the Apache License, Version 2.0 (the "License");
%% you may not use this file except in compliance with the License.
%% You may obtain a copy of the License at
%%
%% http://www.apache.org/licenses/LICENSE-2.0
%%
%% Unless required by applicable law or agreed to in writing, software
%% distributed under the License is distributed on an "AS IS" BASIS,
%% WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
%% See the License for the specific language governing permissions and
%% limitations under the License.
%%
%% %CopyrightEnd%
%%
%%
%%----------------------------------------------------------------------
%% Purpose: The ssh subsystem supervisor
%%----------------------------------------------------------------------
-module(ssh_subsystem_sup).
-behaviour(supervisor).
-include("ssh.hrl").
-export([start_link/5,
connection_supervisor/1,
channel_supervisor/1
]).
%% Supervisor callback
-export([init/1]).
%%%=========================================================================
%%% API
%%%=========================================================================
start_link(Role, Address, Port, Profile, Options) ->
supervisor:start_link(?MODULE, [Role, Address, Port, Profile, Options]).
connection_supervisor(SupPid) ->
Children = supervisor:which_children(SupPid),
ssh_connection_sup(Children).
channel_supervisor(SupPid) ->
Children = supervisor:which_children(SupPid),
ssh_channel_sup(Children).
%%%=========================================================================
%%% Supervisor callback
%%%=========================================================================
init([Role, Address, Port, Profile, Options]) ->
SupFlags = #{strategy => one_for_all,
intensity => 0,
period => 3600
},
ChildSpecs = child_specs(Role, Address, Port, Profile, Options),
{ok, {SupFlags,ChildSpecs}}.
%%%=========================================================================
%%% Internal functions
%%%=========================================================================
child_specs(client, _Address, _Port, _Profile, _Options) ->
[];
child_specs(server, Address, Port, Profile, Options) ->
[ssh_channel_child_spec(server, Address, Port, Profile, Options),
ssh_connection_child_spec(server, Address, Port, Profile, Options)].
ssh_connection_child_spec(Role, Address, Port, _Profile, Options) ->
#{id => id(Role, ssh_connection_sup, Address, Port),
start => {ssh_connection_sup, start_link, [Options]},
restart => temporary,
shutdown => 5000,
type => supervisor,
modules => [ssh_connection_sup]
}.
ssh_channel_child_spec(Role, Address, Port, _Profile, Options) ->
#{id => id(Role, ssh_channel_sup, Address, Port),
start => {ssh_channel_sup, start_link, [Options]},
restart => temporary,
shutdown => infinity,
type => supervisor,
modules => [ssh_channel_sup]
}.
id(Role, Sup, Address, Port) ->
{Role, Sup, Address, Port}.
ssh_connection_sup([{_, Child, _, [ssh_connection_sup]} | _]) ->
Child;
ssh_connection_sup([_ | Rest]) ->
ssh_connection_sup(Rest).
ssh_channel_sup([{_, Child, _, [ssh_channel_sup]} | _]) ->
Child;
ssh_channel_sup([_ | Rest]) ->
ssh_channel_sup(Rest).
