aboutsummaryrefslogtreecommitdiffstats
path: root/lib/ssh/src/sshc_sup.erl
blob: fd4d8a3c0757605f8d31ccafe987a26b4b2d193e (plain) (blame)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
%%
%% %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 client subsystem supervisor 
%%----------------------------------------------------------------------

-module(sshc_sup).

-behaviour(supervisor).

-export([start_link/0, start_child/1, stop_child/1]).

%% Supervisor callback
-export([init/1]).

-define(SSHC_SUP, ?MODULE).

%%%=========================================================================
%%%  API
%%%=========================================================================
start_link() ->
    supervisor:start_link({local,?SSHC_SUP}, ?MODULE, []).

start_child(Args) ->
    supervisor:start_child(?MODULE, Args).

stop_child(Client) ->
    spawn(fun() -> 
		  ClientSup = whereis(?SSHC_SUP),
		  supervisor:terminate_child(ClientSup, Client)
	  end),
    ok.

%%%=========================================================================
%%%  Supervisor callback
%%%=========================================================================
init(_) ->
    SupFlags = #{strategy  => simple_one_for_one, 
                 intensity =>    0,
                 period    => 3600
                },
    ChildSpecs = [#{id       => undefined, % As simple_one_for_one is used.
                    start    => {ssh_connection_handler, start_link, []},
                    restart  => temporary % because there is no way to restart a crashed connection
                   }
                 ],
    {ok, {SupFlags,ChildSpecs}}.