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
|
% 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_drv).
-behaviour(gen_server).
-vsn(1).
-export([init/1, handle_call/3, handle_cast/2, handle_info/2, terminate/2,
code_change/3]).
-export([start_link/0]).
-include_lib("couch/include/couch_db.hrl").
start_link() ->
gen_server:start_link({local, ?MODULE}, ?MODULE, [], []).
init([]) ->
LibDir = util_driver_dir(),
case erl_ddll:load(LibDir, "couch_icu_driver") of
ok ->
{ok, nil};
{error, already_loaded} ->
couch_log:info("~p reloading couch_icu_driver", [?MODULE]),
ok = erl_ddll:reload(LibDir, "couch_icu_driver"),
{ok, nil};
{error, Error} ->
{stop, erl_ddll:format_error(Error)}
end.
handle_call(_Request, _From, State) ->
{reply, ok, State}.
handle_cast(_Request, State) ->
{noreply, State}.
handle_info(_Info, State) ->
{noreply, State}.
terminate(_Reason, _State) ->
ok.
code_change(_OldVsn, State, _Extra) ->
{ok, State}.
% private API
util_driver_dir() ->
case config:get("couchdb", "util_driver_dir", undefined) of
undefined ->
couch_util:priv_dir();
LibDir0 ->
LibDir0
end.
|
