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
|
%%% Copyright (c) 2014, NORDUnet A/S.
%%% See LICENSE for licensing information.
%%% @doc Storage DB
-module(storagedb).
-behaviour(gen_server).
%% API
-export([start_link/0, stop/0]).
-export([add/1, fetchnewhashes/1]).
%% gen_server callbacks.
-export([init/1, handle_call/3, terminate/2, handle_cast/2, handle_info/2,
code_change/3]).
-import(stacktrace, [call/2]).
init(_Args) ->
{ok, []}.
start_link() ->
gen_server:start_link({local, ?MODULE}, ?MODULE, [], []).
stop() ->
call(?MODULE, stop).
%%%%%%%%%%%%%%%%%%%%
%% Public API.
fetchnewhashes(Index) ->
case index:indexsize(newentries_path()) of
0 ->
[];
Size ->
index:getrange(newentries_path(), Index, Size - 1)
end.
-spec add(binary()) -> ok.
add(LeafHash) ->
ok = call(?MODULE, {add_nosync, LeafHash}),
ok = index:sync(newentries_path()),
ok.
%%%%%%%%%%%%%%%%%%%%
%% gen_server callbacks.
handle_cast(_Request, State) ->
{noreply, State}.
handle_info(_Info, State) ->
{noreply, State}.
code_change(_OldVsn, State, _Extra) ->
{ok, State}.
terminate(_Reason, _State) ->
io:format("~p terminating~n", [?MODULE]),
ok.
%%%%%%%%%%%%%%%%%%%%
newentries_path() ->
{ok, Value} = application:get_env(plop, newentries_path),
Value.
handle_call(stop, _From, State) ->
{stop, normal, stopped, State};
handle_call({add_nosync, LeafHash}, _From, State) ->
ok = index:addlast_nosync(newentries_path(), LeafHash),
{reply, ok, State}.
|
