The R13B03 release.OTP_R13B03

1 files changed, 95 insertions, 0 deletions

diff --git a/lib/ssh/src/ssh_acceptor_sup.erl b/lib/ssh/src/ssh_acceptor_sup.erl
new file mode 100644
index 0000000000..707e3d3a5e
--- /dev/null
+++ b/lib/ssh/src/ssh_acceptor_sup.erl
@@ -0,0 +1,95 @@
+%%
+%% %CopyrightBegin%
+%% 
+%% Copyright Ericsson AB 2008-2009. 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: The acceptor supervisor for ssh servers hangs under 
+%%          ssh_system_sup.
+%%----------------------------------------------------------------------
+
+-module(ssh_acceptor_sup).
+-behaviour(supervisor).
+
+-export([start_link/1, start_child/2, stop_child/2]).
+
+%% Supervisor callback
+-export([init/1]).
+
+-define(DEFAULT_TIMEOUT, 50000).
+
+%%%=========================================================================
+%%%  API
+%%%=========================================================================
+start_link(Servers) ->
+    supervisor:start_link(?MODULE, [Servers]).
+
+start_child(AccSup, ServerOpts) ->
+    Spec = child_spec(ServerOpts),    
+    case supervisor:start_child(AccSup, Spec) of
+	{error, already_present} ->
+	    Address = proplists:get_value(address, ServerOpts),
+	    Port = proplists:get_value(port, ServerOpts),
+	    Name = id(Address, Port),
+	    supervisor:delete_child(?MODULE, Name),
+	    supervisor:start_child(AccSup, Spec);
+	Reply ->
+	    Reply
+    end.
+
+stop_child(Address, Port) ->
+    Name = id(Address, Port),
+    case supervisor:terminate_child(?MODULE, Name) of
+        ok ->
+            supervisor:delete_child(?MODULE, Name);
+        Error ->
+            Error
+    end.
+
+%%%=========================================================================
+%%%  Supervisor callback
+%%%=========================================================================
+init([ServerOpts]) ->
+    RestartStrategy = one_for_one,
+    MaxR = 10,
+    MaxT = 3600,
+    Children = [child_spec(ServerOpts)],
+    {ok, {{RestartStrategy, MaxR, MaxT}, Children}}.
+
+%%%=========================================================================
+%%%  Internal functions
+%%%=========================================================================
+child_spec(ServerOpts) ->
+    Address = proplists:get_value(address, ServerOpts),
+    Port = proplists:get_value(port, ServerOpts),
+    Timeout = proplists:get_value(timeout, ServerOpts, ?DEFAULT_TIMEOUT),
+    Name = id(Address, Port),
+    SocketOpts = proplists:get_value(socket_opts, ServerOpts),
+    StartFunc = {ssh_acceptor, start_link, [Port, Address, 
+					    [{active, false},
+					     {reuseaddr, true}] ++ SocketOpts, 
+					    ServerOpts, Timeout]},
+    Restart = permanent, 
+    Shutdown = 3600,
+    Modules = [ssh_acceptor],
+    Type = worker,
+    {Name, StartFunc, Restart, Shutdown, Type, Modules}.
+
+id(Address, Port) ->
+    {ssh_acceptor_sup, Address, Port}.
+