From 8f4bb9b0bd3aed663521371726ea3ec460e231a0 Mon Sep 17 00:00:00 2001 From: Hans Nilsson Date: Thu, 23 Mar 2017 16:53:53 +0100 Subject: ssh: Mappify supervisors --- lib/ssh/src/ssh_system_sup.erl | 159 +++++++++++++++++------------------------ 1 file changed, 67 insertions(+), 92 deletions(-) (limited to 'lib/ssh/src/ssh_system_sup.erl') diff --git a/lib/ssh/src/ssh_system_sup.erl b/lib/ssh/src/ssh_system_sup.erl index a923b5ef71..84b4cd3241 100644 --- a/lib/ssh/src/ssh_system_sup.erl +++ b/lib/ssh/src/ssh_system_sup.erl @@ -21,7 +21,7 @@ %% %%---------------------------------------------------------------------- %% Purpose: The ssh server instance supervisor, an instans of this supervisor -%% exists for every ip-address and port combination, hangs under +%% exists for every ip-address and port combination, hangs under %% sshd_sup. %%---------------------------------------------------------------------- @@ -34,58 +34,100 @@ -export([start_link/4, stop_listener/1, stop_listener/3, stop_system/1, stop_system/3, system_supervisor/3, - subsystem_supervisor/1, channel_supervisor/1, - connection_supervisor/1, - acceptor_supervisor/1, start_subsystem/6, restart_subsystem/3, - restart_acceptor/3, stop_subsystem/2]). + subsystem_supervisor/1, channel_supervisor/1, + connection_supervisor/1, + acceptor_supervisor/1, start_subsystem/6, + stop_subsystem/2]). %% Supervisor callback -export([init/1]). %%%========================================================================= -%%% Internal API +%%% API %%%========================================================================= start_link(Address, Port, Profile, Options) -> Name = make_name(Address, Port, Profile), supervisor:start_link({local, Name}, ?MODULE, [Address, Port, Profile, Options]). -stop_listener(SysSup) -> - stop_acceptor(SysSup). +%%%========================================================================= +%%% Supervisor callback +%%%========================================================================= +init([Address, Port, Profile, Options]) -> + SupFlags = #{strategy => one_for_one, + intensity => 0, + period => 3600 + }, + ChildSpecs = + case ?GET_INTERNAL_OPT(connected_socket,Options,undefined) of + undefined -> + [#{id => id(ssh_acceptor_sup, Address, Port, Profile), + start => {ssh_acceptor_sup, start_link, [Address, Port, Profile, Options]}, + restart => transient, + shutdown => infinity, + type => supervisor, + modules => [ssh_acceptor_sup] + }]; + _ -> + [] + end, + {ok, {SupFlags,ChildSpecs}}. + +%%%========================================================================= +%%% Service API +%%%========================================================================= +stop_listener(SystemSup) -> + {Name, AcceptorSup, _, _} = lookup(ssh_acceptor_sup, SystemSup), + case supervisor:terminate_child(AcceptorSup, Name) of + ok -> + supervisor:delete_child(AcceptorSup, Name); + Error -> + Error + end. stop_listener(Address, Port, Profile) -> - Name = make_name(Address, Port, Profile), - stop_acceptor(whereis(Name)). - + stop_listener( + system_supervisor(Address, Port, Profile)). + + stop_system(SysSup) -> - Name = sshd_sup:system_name(SysSup), - spawn(fun() -> sshd_sup:stop_child(Name) end), + spawn(fun() -> sshd_sup:stop_child(SysSup) end), ok. -stop_system(Address, Port, Profile) -> +stop_system(Address, Port, Profile) -> spawn(fun() -> sshd_sup:stop_child(Address, Port, Profile) end), ok. + system_supervisor(Address, Port, Profile) -> Name = make_name(Address, Port, Profile), whereis(Name). subsystem_supervisor(SystemSup) -> - ssh_subsystem_sup(supervisor:which_children(SystemSup)). + {_, Child, _, _} = lookup(ssh_subsystem_sup, SystemSup), + Child. channel_supervisor(SystemSup) -> - SubSysSup = ssh_subsystem_sup(supervisor:which_children(SystemSup)), - ssh_subsystem_sup:channel_supervisor(SubSysSup). + ssh_subsystem_sup:channel_supervisor( + subsystem_supervisor(SystemSup)). connection_supervisor(SystemSup) -> - SubSysSup = ssh_subsystem_sup(supervisor:which_children(SystemSup)), - ssh_subsystem_sup:connection_supervisor(SubSysSup). + ssh_subsystem_sup:connection_supervisor( + subsystem_supervisor(SystemSup)). acceptor_supervisor(SystemSup) -> - ssh_acceptor_sup(supervisor:which_children(SystemSup)). + {_, Child, _, _} = lookup(ssh_acceptor_sup, SystemSup), + Child. + start_subsystem(SystemSup, Role, Address, Port, Profile, Options) -> - Spec = ssh_subsystem_child_spec(Role, Address, Port, Profile, Options), - supervisor:start_child(SystemSup, Spec). + SubsystemSpec = + #{id => make_ref(), + start => {ssh_subsystem_sup, start_link, [Role, Address, Port, Profile, Options]}, + restart => temporary, + shutdown => infinity, + type => supervisor, + modules => [ssh_subsystem_sup]}, + supervisor:start_child(SystemSup, SubsystemSpec). stop_subsystem(SystemSup, SubSys) -> case catch lists:keyfind(SubSys, 2, supervisor:which_children(SystemSup)) of @@ -103,60 +145,9 @@ stop_subsystem(SystemSup, SubSys) -> ok end. - -restart_subsystem(Address, Port, Profile) -> - SysSupName = make_name(Address, Port, Profile), - SubSysName = id(ssh_subsystem_sup, Address, Port, Profile), - case supervisor:terminate_child(SysSupName, SubSysName) of - ok -> - supervisor:restart_child(SysSupName, SubSysName); - Error -> - Error - end. - -restart_acceptor(Address, Port, Profile) -> - SysSupName = make_name(Address, Port, Profile), - AcceptorName = id(ssh_acceptor_sup, Address, Port, Profile), - supervisor:restart_child(SysSupName, AcceptorName). - -%%%========================================================================= -%%% Supervisor callback -%%%========================================================================= -init([Address, Port, Profile, Options]) -> - RestartStrategy = one_for_one, - MaxR = 0, - MaxT = 3600, - Children = case ?GET_INTERNAL_OPT(connected_socket,Options,undefined) of - undefined -> child_specs(Address, Port, Profile, Options); - _ -> [] - end, - {ok, {{RestartStrategy, MaxR, MaxT}, Children}}. - %%%========================================================================= %%% Internal functions %%%========================================================================= -child_specs(Address, Port, Profile, Options) -> - [ssh_acceptor_child_spec(Address, Port, Profile, Options)]. - -ssh_acceptor_child_spec(Address, Port, Profile, Options) -> - Name = id(ssh_acceptor_sup, Address, Port, Profile), - StartFunc = {ssh_acceptor_sup, start_link, [Address, Port, Profile, Options]}, - Restart = transient, - Shutdown = infinity, - Modules = [ssh_acceptor_sup], - Type = supervisor, - {Name, StartFunc, Restart, Shutdown, Type, Modules}. - -ssh_subsystem_child_spec(Role, Address, Port, Profile, Options) -> - Name = make_ref(), - StartFunc = {ssh_subsystem_sup, start_link, [Role, Address, Port, Profile, Options]}, - Restart = temporary, - Shutdown = infinity, - Modules = [ssh_subsystem_sup], - Type = supervisor, - {Name, StartFunc, Restart, Shutdown, Type, Modules}. - - id(Sup, Address, Port, Profile) -> {Sup, Address, Port, Profile}. @@ -168,23 +159,7 @@ fmt_host(A) when is_atom(A) -> A; fmt_host(S) when is_list(S) -> S. -ssh_subsystem_sup([{_, Child, _, [ssh_subsystem_sup]} | _]) -> - Child; -ssh_subsystem_sup([_ | Rest]) -> - ssh_subsystem_sup(Rest). - -ssh_acceptor_sup([{_, Child, _, [ssh_acceptor_sup]} | _]) -> - Child; -ssh_acceptor_sup([_ | Rest]) -> - ssh_acceptor_sup(Rest). +lookup(SupModule, SystemSup) -> + lists:keyfind([SupModule], 4, + supervisor:which_children(SystemSup)). -stop_acceptor(Sup) -> - [{Name, AcceptorSup}] = - [{SupName, ASup} || {SupName, ASup, _, [ssh_acceptor_sup]} <- - supervisor:which_children(Sup)], - case supervisor:terminate_child(AcceptorSup, Name) of - ok -> - supervisor:delete_child(AcceptorSup, Name); - Error -> - Error - end. -- cgit v1.2.3