mirror of
https://github.com/processone/ejabberd.git
synced 2024-12-22 17:28:25 +01:00
111 lines
3.7 KiB
Erlang
111 lines
3.7 KiB
Erlang
%%%-------------------------------------------------------------------
|
|
%%% Created : 7 May 2018 by Evgeny Khramtsov <ekhramtsov@process-one.net>
|
|
%%%
|
|
%%%
|
|
%%% ejabberd, Copyright (C) 2002-2022 ProcessOne
|
|
%%%
|
|
%%% This program is free software; you can redistribute it and/or
|
|
%%% modify it under the terms of the GNU General Public License as
|
|
%%% published by the Free Software Foundation; either version 2 of the
|
|
%%% License, or (at your option) any later version.
|
|
%%%
|
|
%%% This program is distributed in the hope that it will be useful,
|
|
%%% but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
%%% MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
|
%%% General Public License for more details.
|
|
%%%
|
|
%%% You should have received a copy of the GNU General Public License along
|
|
%%% with this program; if not, write to the Free Software Foundation, Inc.,
|
|
%%% 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
|
|
%%%
|
|
%%%-------------------------------------------------------------------
|
|
-module(extauth_sup).
|
|
-behaviour(supervisor).
|
|
|
|
%% API
|
|
-export([start/1, stop/1, reload/1, start_link/3]).
|
|
%% Supervisor callbacks
|
|
-export([init/1]).
|
|
|
|
-include("logger.hrl").
|
|
|
|
%%%===================================================================
|
|
%%% API functions
|
|
%%%===================================================================
|
|
start(Host) ->
|
|
case extauth:prog_name(Host) of
|
|
undefined ->
|
|
?ERROR_MSG("Option 'extauth_program' is not set for '~ts'",
|
|
[Host]),
|
|
ignore;
|
|
Prog ->
|
|
Pool = extauth:pool_name(Host),
|
|
ChildSpec = {Pool, {?MODULE, start_link, [Host, Prog, Pool]},
|
|
permanent, infinity, supervisor, [?MODULE]},
|
|
supervisor:start_child(ejabberd_backend_sup, ChildSpec)
|
|
end.
|
|
|
|
stop(Host) ->
|
|
Pool = extauth:pool_name(Host),
|
|
supervisor:terminate_child(ejabberd_backend_sup, Pool),
|
|
supervisor:delete_child(ejabberd_backend_sup, Pool).
|
|
|
|
reload(Host) ->
|
|
Pool = extauth:pool_name(Host),
|
|
Prog = extauth:prog_name(Host),
|
|
PoolSize = extauth:pool_size(Host),
|
|
try process_info(whereis(Pool), dictionary) of
|
|
{dictionary, Dict} ->
|
|
case proplists:get_value(extauth_program, Dict) of
|
|
Prog ->
|
|
OldPoolSize = try supervisor:which_children(Pool) of
|
|
Children -> length(Children)
|
|
catch _:_ -> PoolSize
|
|
end,
|
|
if OldPoolSize > PoolSize ->
|
|
lists:foreach(
|
|
fun(I) ->
|
|
Worker = extauth:worker_name(Pool, I),
|
|
supervisor:terminate_child(Pool, Worker),
|
|
supervisor:delete_child(Pool, Worker)
|
|
end, lists:seq(PoolSize+1, OldPoolSize));
|
|
OldPoolSize < PoolSize ->
|
|
lists:foreach(
|
|
fun(I) ->
|
|
Spec = worker_spec(Pool, Prog, I),
|
|
supervisor:start_child(Pool, Spec)
|
|
end, lists:seq(OldPoolSize+1, PoolSize));
|
|
OldPoolSize == PoolSize ->
|
|
ok
|
|
end;
|
|
_ ->
|
|
stop(Host),
|
|
start(Host)
|
|
end
|
|
catch _:badarg ->
|
|
ok
|
|
end.
|
|
|
|
start_link(Host, Prog, Pool) ->
|
|
supervisor:start_link({local, Pool}, ?MODULE, [Host, Prog, Pool]).
|
|
|
|
%%%===================================================================
|
|
%%% Supervisor callbacks
|
|
%%%===================================================================
|
|
init([Host, Prog, Pool]) ->
|
|
PoolSize = extauth:pool_size(Host),
|
|
Children = lists:map(
|
|
fun(I) ->
|
|
worker_spec(Pool, Prog, I)
|
|
end, lists:seq(1, PoolSize)),
|
|
put(extauth_program, Prog),
|
|
{ok, {{one_for_one, PoolSize, 1}, Children}}.
|
|
|
|
%%%===================================================================
|
|
%%% Internal functions
|
|
%%%===================================================================
|
|
worker_spec(Pool, Prog, I) ->
|
|
Worker = extauth:worker_name(Pool, I),
|
|
{Worker, {extauth, start_link, [Worker, Prog]},
|
|
permanent, 5000, worker, [extauth]}.
|