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
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
|
%%%----------------------------------------------------------------------
%%% File : ejabberd_app.erl
%%% Author : Alexey Shchepin <alexey@process-one.net>
%%% Purpose : ejabberd's application callback module
%%% Created : 31 Jan 2003 by Alexey Shchepin <alexey@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(ejabberd_app).
-author('alexey@process-one.net').
-behaviour(application).
-export([start/2, prep_stop/1, stop/1]).
-include("logger.hrl").
-include("ejabberd_stacktrace.hrl").
%%%
%%% Application API
%%%
start(normal, _Args) ->
try
{T1, _} = statistics(wall_clock),
ejabberd_logger:start(),
write_pid_file(),
start_included_apps(),
start_elixir_application(),
setup_if_elixir_conf_used(),
case ejabberd_config:load() of
ok ->
ejabberd_mnesia:start(),
file_queue_init(),
maybe_add_nameservers(),
case ejabberd_sup:start_link() of
{ok, SupPid} ->
ejabberd_system_monitor:start(),
register_elixir_config_hooks(),
ejabberd_cluster:wait_for_sync(infinity),
ejabberd_hooks:run(ejabberd_started, []),
ejabberd:check_apps(),
ejabberd_systemd:ready(),
{T2, _} = statistics(wall_clock),
?INFO_MSG("ejabberd ~ts is started in the node ~p in ~.2fs",
[ejabberd_option:version(),
node(), (T2-T1)/1000]),
{ok, SupPid};
Err ->
?CRITICAL_MSG("Failed to start ejabberd application: ~p", [Err]),
ejabberd:halt()
end;
Err ->
?CRITICAL_MSG("Failed to start ejabberd application: ~ts",
[ejabberd_config:format_error(Err)]),
ejabberd:halt()
end
catch throw:{?MODULE, Error} ->
?DEBUG("Failed to start ejabberd application: ~p", [Error]),
ejabberd:halt()
end;
start(_, _) ->
{error, badarg}.
start_included_apps() ->
{ok, Apps} = application:get_key(ejabberd, included_applications),
lists:foreach(
fun(mnesia) ->
ok;
(lager) ->
ok;
(os_mon)->
ok;
(App) ->
application:ensure_all_started(App)
end, Apps).
%% Prepare the application for termination.
%% This function is called when an application is about to be stopped,
%% before shutting down the processes of the application.
prep_stop(State) ->
ejabberd_systemd:stopping(),
ejabberd_hooks:run(ejabberd_stopping, []),
ejabberd_listener:stop(),
ejabberd_sm:stop(),
ejabberd_service:stop(),
ejabberd_s2s:stop(),
gen_mod:stop(),
State.
%% All the processes were killed when this function is called
stop(_State) ->
?INFO_MSG("ejabberd ~ts is stopped in the node ~p",
[ejabberd_option:version(), node()]),
delete_pid_file().
%%%
%%% Internal functions
%%%
%% If ejabberd is running on some Windows machine, get nameservers and add to Erlang
maybe_add_nameservers() ->
case os:type() of
{win32, _} -> add_windows_nameservers();
_ -> ok
end.
add_windows_nameservers() ->
IPTs = win32_dns:get_nameservers(),
?INFO_MSG("Adding machine's DNS IPs to Erlang system:~n~p", [IPTs]),
lists:foreach(fun(IPT) -> inet_db:add_ns(IPT) end, IPTs).
%%%
%%% PID file
%%%
write_pid_file() ->
case ejabberd:get_pid_file() of
false ->
ok;
PidFilename ->
write_pid_file(os:getpid(), PidFilename)
end.
write_pid_file(Pid, PidFilename) ->
case file:write_file(PidFilename, io_lib:format("~ts~n", [Pid])) of
ok ->
ok;
{error, Reason} = Err ->
?CRITICAL_MSG("Cannot write PID file ~ts: ~ts",
[PidFilename, file:format_error(Reason)]),
throw({?MODULE, Err})
end.
delete_pid_file() ->
case ejabberd:get_pid_file() of
false ->
ok;
PidFilename ->
file:delete(PidFilename)
end.
file_queue_init() ->
QueueDir = case ejabberd_option:queue_dir() of
undefined ->
MnesiaDir = mnesia:system_info(directory),
filename:join(MnesiaDir, "queue");
Path ->
Path
end,
case p1_queue:start(QueueDir) of
ok -> ok;
Err -> throw({?MODULE, Err})
end.
-ifdef(ELIXIR_ENABLED).
is_using_elixir_config() ->
Config = ejabberd_config:path(),
'Elixir.Ejabberd.ConfigUtil':is_elixir_config(Config).
setup_if_elixir_conf_used() ->
case is_using_elixir_config() of
true -> 'Elixir.Ejabberd.Config.Store':start_link();
false -> ok
end.
register_elixir_config_hooks() ->
case is_using_elixir_config() of
true -> 'Elixir.Ejabberd.Config':start_hooks();
false -> ok
end.
start_elixir_application() ->
case application:ensure_started(elixir) of
ok -> ok;
{error, _Msg} -> ?ERROR_MSG("Elixir application not started.", [])
end.
-else.
setup_if_elixir_conf_used() -> ok.
register_elixir_config_hooks() -> ok.
start_elixir_application() -> ok.
-endif.
|
