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
|
% 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.
-module(couch_sup).
-behaviour(supervisor).
-vsn(1).
-behaviour(config_listener).
-export([
start_link/0,
init/1,
handle_config_change/5,
handle_config_terminate/3
]).
-include_lib("couch/include/couch_db.hrl").
start_link() ->
assert_admins(),
maybe_launch_admin_annoyance_reporter(),
write_pidfile(),
notify_starting(),
case supervisor:start_link({local, ?MODULE}, ?MODULE, []) of
{ok, _} = Resp ->
notify_started(),
Resp;
Else ->
notify_error(Else),
Else
end.
init(_Args) ->
couch_log:info("Starting ~s", [?MODULE]),
{ok,
{{one_for_one, 10, 60}, [
{
config_listener_mon,
{config_listener_mon, start_link, [?MODULE, nil]},
permanent,
5000,
worker,
[config_listener_mon]
},
{
couch_primary_services,
{couch_primary_sup, start_link, []},
permanent,
infinity,
supervisor,
[couch_primary_sup]
},
{
couch_secondary_services,
{couch_secondary_sup, start_link, []},
permanent,
infinity,
supervisor,
[couch_secondary_sup]
}
]}}.
handle_config_change("daemons", _, _, _, _) ->
exit(whereis(?MODULE), shutdown),
remove_handler;
handle_config_change("couchdb", "util_driver_dir", _, _, _) ->
[Pid] = [
P
|| {collation_driver, P, _, _} <-
supervisor:which_children(couch_primary_services)
],
Pid ! reload_driver,
{ok, nil};
handle_config_change(_, _, _, _, _) ->
{ok, nil}.
handle_config_terminate(_Server, _Reason, _State) ->
ok.
assert_admins() ->
couch_log:info("Preflight check: Asserting Admin Account~n", []),
case {config:get("admins"), os:getenv("COUCHDB_TEST_ADMIN_PARTY_OVERRIDE")} of
{[], false} ->
couch_log:info(
"~n%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%~n" ++
" No Admin Account Found, aborting startup. ~n" ++
" Please configure an admin account in your local.ini file. ~n" ++
"%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%~n",
[]
),
% Wait a second so the log message can make it to the log
timer:sleep(500),
erlang:halt(1);
_ ->
ok
end.
send_no_admin_account_error_message() ->
couch_log:error(
"No Admin Account configured." ++
" Please configure an Admin Account in your local.ini file and restart CouchDB.~n",
[]
),
FiveMinutes = 5 * 1000 * 60,
timer:sleep(FiveMinutes),
send_no_admin_account_error_message().
maybe_launch_admin_annoyance_reporter() ->
case os:getenv("COUCHDB_TEST_ADMIN_PARTY_OVERRIDE") of
false -> ok;
_ -> spawn_link(fun send_no_admin_account_error_message/0)
end.
notify_starting() ->
couch_log:info("Apache CouchDB ~s is starting.~n", [
couch_server:get_version()
]).
notify_started() ->
couch_log:info("Apache CouchDB has started. Time to relax.~n", []).
notify_error(Error) ->
couch_log:error("Error starting Apache CouchDB:~n~n ~p~n~n", [Error]).
write_pidfile() ->
case init:get_argument(pidfile) of
{ok, [PidFile]} ->
write_file(PidFile, os:getpid());
_ ->
ok
end.
write_file(FileName, Contents) ->
case file:write_file(FileName, Contents) of
ok ->
ok;
{error, Reason} ->
Args = [FileName, file:format_error(Reason)],
couch_log:error("Failed ot write ~s :: ~s", Args),
throw({error, Reason})
end.
|
