annotate mod_storage_lmdb/mod_storage_lmdb.lua @ 1786:8ad2c526404c

README: Update repository link
author Kim Alvefur <zash@zash.se>
date Tue, 25 Aug 2015 16:53:15 +0200
parents 0a21b16b9075
children d2dd1db9ece6
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
1755
0a21b16b9075 mod_storage_lmdb: Storage module using Lightning Memory-Mapped Database
Kim Alvefur <zash@zash.se>
parents:
diff changeset
1 -- mod_storage_lmdb
0a21b16b9075 mod_storage_lmdb: Storage module using Lightning Memory-Mapped Database
Kim Alvefur <zash@zash.se>
parents:
diff changeset
2 -- Copyright (C) 2015 Kim Alvefur
0a21b16b9075 mod_storage_lmdb: Storage module using Lightning Memory-Mapped Database
Kim Alvefur <zash@zash.se>
parents:
diff changeset
3 --
0a21b16b9075 mod_storage_lmdb: Storage module using Lightning Memory-Mapped Database
Kim Alvefur <zash@zash.se>
parents:
diff changeset
4 -- This file is MIT/X11 licensed.
0a21b16b9075 mod_storage_lmdb: Storage module using Lightning Memory-Mapped Database
Kim Alvefur <zash@zash.se>
parents:
diff changeset
5 --
0a21b16b9075 mod_storage_lmdb: Storage module using Lightning Memory-Mapped Database
Kim Alvefur <zash@zash.se>
parents:
diff changeset
6 -- Depends on lightningdbm
0a21b16b9075 mod_storage_lmdb: Storage module using Lightning Memory-Mapped Database
Kim Alvefur <zash@zash.se>
parents:
diff changeset
7 -- https://github.com/shmul/lightningdbm
0a21b16b9075 mod_storage_lmdb: Storage module using Lightning Memory-Mapped Database
Kim Alvefur <zash@zash.se>
parents:
diff changeset
8 --
0a21b16b9075 mod_storage_lmdb: Storage module using Lightning Memory-Mapped Database
Kim Alvefur <zash@zash.se>
parents:
diff changeset
9 -- luacheck: globals prosody open
0a21b16b9075 mod_storage_lmdb: Storage module using Lightning Memory-Mapped Database
Kim Alvefur <zash@zash.se>
parents:
diff changeset
10
0a21b16b9075 mod_storage_lmdb: Storage module using Lightning Memory-Mapped Database
Kim Alvefur <zash@zash.se>
parents:
diff changeset
11 local lmdb = require"lightningmdb";
0a21b16b9075 mod_storage_lmdb: Storage module using Lightning Memory-Mapped Database
Kim Alvefur <zash@zash.se>
parents:
diff changeset
12 local lfs = require"lfs";
0a21b16b9075 mod_storage_lmdb: Storage module using Lightning Memory-Mapped Database
Kim Alvefur <zash@zash.se>
parents:
diff changeset
13 local path = require"util.paths";
0a21b16b9075 mod_storage_lmdb: Storage module using Lightning Memory-Mapped Database
Kim Alvefur <zash@zash.se>
parents:
diff changeset
14 local serialization = require"util.serialization";
0a21b16b9075 mod_storage_lmdb: Storage module using Lightning Memory-Mapped Database
Kim Alvefur <zash@zash.se>
parents:
diff changeset
15 local serialize = serialization.serialize;
0a21b16b9075 mod_storage_lmdb: Storage module using Lightning Memory-Mapped Database
Kim Alvefur <zash@zash.se>
parents:
diff changeset
16 local deserialize = serialization.deserialize;
0a21b16b9075 mod_storage_lmdb: Storage module using Lightning Memory-Mapped Database
Kim Alvefur <zash@zash.se>
parents:
diff changeset
17
0a21b16b9075 mod_storage_lmdb: Storage module using Lightning Memory-Mapped Database
Kim Alvefur <zash@zash.se>
parents:
diff changeset
18 local base_path = path.resolve_relative_path(prosody.paths.data, module.host);
0a21b16b9075 mod_storage_lmdb: Storage module using Lightning Memory-Mapped Database
Kim Alvefur <zash@zash.se>
parents:
diff changeset
19 lfs.mkdir(base_path);
0a21b16b9075 mod_storage_lmdb: Storage module using Lightning Memory-Mapped Database
Kim Alvefur <zash@zash.se>
parents:
diff changeset
20
0a21b16b9075 mod_storage_lmdb: Storage module using Lightning Memory-Mapped Database
Kim Alvefur <zash@zash.se>
parents:
diff changeset
21 local env = lmdb.env_create();
0a21b16b9075 mod_storage_lmdb: Storage module using Lightning Memory-Mapped Database
Kim Alvefur <zash@zash.se>
parents:
diff changeset
22 assert(env:set_maxdbs(module:get_option_number("lmdb_maxdbs", 20)));
0a21b16b9075 mod_storage_lmdb: Storage module using Lightning Memory-Mapped Database
Kim Alvefur <zash@zash.se>
parents:
diff changeset
23 local env_flags = 0;
0a21b16b9075 mod_storage_lmdb: Storage module using Lightning Memory-Mapped Database
Kim Alvefur <zash@zash.se>
parents:
diff changeset
24 for i, flag in ipairs(module:get_option_array("lmdb_flags", {})) do
0a21b16b9075 mod_storage_lmdb: Storage module using Lightning Memory-Mapped Database
Kim Alvefur <zash@zash.se>
parents:
diff changeset
25 env_flags = env_flags + assert(lmdb["MDB_"..flag:upper()], "No such flag "..flag);
0a21b16b9075 mod_storage_lmdb: Storage module using Lightning Memory-Mapped Database
Kim Alvefur <zash@zash.se>
parents:
diff changeset
26 end
0a21b16b9075 mod_storage_lmdb: Storage module using Lightning Memory-Mapped Database
Kim Alvefur <zash@zash.se>
parents:
diff changeset
27 env:open(base_path, env_flags, tonumber("640", 8));
0a21b16b9075 mod_storage_lmdb: Storage module using Lightning Memory-Mapped Database
Kim Alvefur <zash@zash.se>
parents:
diff changeset
28
0a21b16b9075 mod_storage_lmdb: Storage module using Lightning Memory-Mapped Database
Kim Alvefur <zash@zash.se>
parents:
diff changeset
29 local keyval = {};
0a21b16b9075 mod_storage_lmdb: Storage module using Lightning Memory-Mapped Database
Kim Alvefur <zash@zash.se>
parents:
diff changeset
30 local keyval_mt = { __index = keyval, flags = lmdb.MDB_CREATE };
0a21b16b9075 mod_storage_lmdb: Storage module using Lightning Memory-Mapped Database
Kim Alvefur <zash@zash.se>
parents:
diff changeset
31
0a21b16b9075 mod_storage_lmdb: Storage module using Lightning Memory-Mapped Database
Kim Alvefur <zash@zash.se>
parents:
diff changeset
32 function keyval:set(user, value)
0a21b16b9075 mod_storage_lmdb: Storage module using Lightning Memory-Mapped Database
Kim Alvefur <zash@zash.se>
parents:
diff changeset
33 local t = self.env:txn_begin(nil, 0);
0a21b16b9075 mod_storage_lmdb: Storage module using Lightning Memory-Mapped Database
Kim Alvefur <zash@zash.se>
parents:
diff changeset
34 if type(value) == "table" and next(value) == nil then
0a21b16b9075 mod_storage_lmdb: Storage module using Lightning Memory-Mapped Database
Kim Alvefur <zash@zash.se>
parents:
diff changeset
35 value = nil;
0a21b16b9075 mod_storage_lmdb: Storage module using Lightning Memory-Mapped Database
Kim Alvefur <zash@zash.se>
parents:
diff changeset
36 end
0a21b16b9075 mod_storage_lmdb: Storage module using Lightning Memory-Mapped Database
Kim Alvefur <zash@zash.se>
parents:
diff changeset
37 if value ~= nil then
0a21b16b9075 mod_storage_lmdb: Storage module using Lightning Memory-Mapped Database
Kim Alvefur <zash@zash.se>
parents:
diff changeset
38 value = serialize(value);
0a21b16b9075 mod_storage_lmdb: Storage module using Lightning Memory-Mapped Database
Kim Alvefur <zash@zash.se>
parents:
diff changeset
39 end
0a21b16b9075 mod_storage_lmdb: Storage module using Lightning Memory-Mapped Database
Kim Alvefur <zash@zash.se>
parents:
diff changeset
40 local ok, err;
0a21b16b9075 mod_storage_lmdb: Storage module using Lightning Memory-Mapped Database
Kim Alvefur <zash@zash.se>
parents:
diff changeset
41 if value ~= nil then
0a21b16b9075 mod_storage_lmdb: Storage module using Lightning Memory-Mapped Database
Kim Alvefur <zash@zash.se>
parents:
diff changeset
42 ok, err = t:put(self.db, user, value, 0);
0a21b16b9075 mod_storage_lmdb: Storage module using Lightning Memory-Mapped Database
Kim Alvefur <zash@zash.se>
parents:
diff changeset
43 else
0a21b16b9075 mod_storage_lmdb: Storage module using Lightning Memory-Mapped Database
Kim Alvefur <zash@zash.se>
parents:
diff changeset
44 ok, err = t:del(self.db, user, value);
0a21b16b9075 mod_storage_lmdb: Storage module using Lightning Memory-Mapped Database
Kim Alvefur <zash@zash.se>
parents:
diff changeset
45 end
0a21b16b9075 mod_storage_lmdb: Storage module using Lightning Memory-Mapped Database
Kim Alvefur <zash@zash.se>
parents:
diff changeset
46 if not ok then
0a21b16b9075 mod_storage_lmdb: Storage module using Lightning Memory-Mapped Database
Kim Alvefur <zash@zash.se>
parents:
diff changeset
47 t:abort();
0a21b16b9075 mod_storage_lmdb: Storage module using Lightning Memory-Mapped Database
Kim Alvefur <zash@zash.se>
parents:
diff changeset
48 return nil, err;
0a21b16b9075 mod_storage_lmdb: Storage module using Lightning Memory-Mapped Database
Kim Alvefur <zash@zash.se>
parents:
diff changeset
49 end
0a21b16b9075 mod_storage_lmdb: Storage module using Lightning Memory-Mapped Database
Kim Alvefur <zash@zash.se>
parents:
diff changeset
50 return t:commit();
0a21b16b9075 mod_storage_lmdb: Storage module using Lightning Memory-Mapped Database
Kim Alvefur <zash@zash.se>
parents:
diff changeset
51 end
0a21b16b9075 mod_storage_lmdb: Storage module using Lightning Memory-Mapped Database
Kim Alvefur <zash@zash.se>
parents:
diff changeset
52
0a21b16b9075 mod_storage_lmdb: Storage module using Lightning Memory-Mapped Database
Kim Alvefur <zash@zash.se>
parents:
diff changeset
53 function keyval:get(user)
0a21b16b9075 mod_storage_lmdb: Storage module using Lightning Memory-Mapped Database
Kim Alvefur <zash@zash.se>
parents:
diff changeset
54 local t = self.env:txn_begin(nil, 0);
0a21b16b9075 mod_storage_lmdb: Storage module using Lightning Memory-Mapped Database
Kim Alvefur <zash@zash.se>
parents:
diff changeset
55 local data, err = t:get(self.db, user, 0);
0a21b16b9075 mod_storage_lmdb: Storage module using Lightning Memory-Mapped Database
Kim Alvefur <zash@zash.se>
parents:
diff changeset
56 if not data then
0a21b16b9075 mod_storage_lmdb: Storage module using Lightning Memory-Mapped Database
Kim Alvefur <zash@zash.se>
parents:
diff changeset
57 t:abort();
0a21b16b9075 mod_storage_lmdb: Storage module using Lightning Memory-Mapped Database
Kim Alvefur <zash@zash.se>
parents:
diff changeset
58 return nil, err;
0a21b16b9075 mod_storage_lmdb: Storage module using Lightning Memory-Mapped Database
Kim Alvefur <zash@zash.se>
parents:
diff changeset
59 end
0a21b16b9075 mod_storage_lmdb: Storage module using Lightning Memory-Mapped Database
Kim Alvefur <zash@zash.se>
parents:
diff changeset
60 t:commit();
0a21b16b9075 mod_storage_lmdb: Storage module using Lightning Memory-Mapped Database
Kim Alvefur <zash@zash.se>
parents:
diff changeset
61 return deserialize(data);
0a21b16b9075 mod_storage_lmdb: Storage module using Lightning Memory-Mapped Database
Kim Alvefur <zash@zash.se>
parents:
diff changeset
62 end
0a21b16b9075 mod_storage_lmdb: Storage module using Lightning Memory-Mapped Database
Kim Alvefur <zash@zash.se>
parents:
diff changeset
63
0a21b16b9075 mod_storage_lmdb: Storage module using Lightning Memory-Mapped Database
Kim Alvefur <zash@zash.se>
parents:
diff changeset
64 local drivers = {
0a21b16b9075 mod_storage_lmdb: Storage module using Lightning Memory-Mapped Database
Kim Alvefur <zash@zash.se>
parents:
diff changeset
65 keyval = keyval_mt;
0a21b16b9075 mod_storage_lmdb: Storage module using Lightning Memory-Mapped Database
Kim Alvefur <zash@zash.se>
parents:
diff changeset
66 }
0a21b16b9075 mod_storage_lmdb: Storage module using Lightning Memory-Mapped Database
Kim Alvefur <zash@zash.se>
parents:
diff changeset
67
0a21b16b9075 mod_storage_lmdb: Storage module using Lightning Memory-Mapped Database
Kim Alvefur <zash@zash.se>
parents:
diff changeset
68 function open(_, store, typ)
0a21b16b9075 mod_storage_lmdb: Storage module using Lightning Memory-Mapped Database
Kim Alvefur <zash@zash.se>
parents:
diff changeset
69 typ = typ or "keyval";
0a21b16b9075 mod_storage_lmdb: Storage module using Lightning Memory-Mapped Database
Kim Alvefur <zash@zash.se>
parents:
diff changeset
70 local driver_mt = drivers[typ];
0a21b16b9075 mod_storage_lmdb: Storage module using Lightning Memory-Mapped Database
Kim Alvefur <zash@zash.se>
parents:
diff changeset
71 if not driver_mt then
0a21b16b9075 mod_storage_lmdb: Storage module using Lightning Memory-Mapped Database
Kim Alvefur <zash@zash.se>
parents:
diff changeset
72 return nil, "unsupported-store";
0a21b16b9075 mod_storage_lmdb: Storage module using Lightning Memory-Mapped Database
Kim Alvefur <zash@zash.se>
parents:
diff changeset
73 end
0a21b16b9075 mod_storage_lmdb: Storage module using Lightning Memory-Mapped Database
Kim Alvefur <zash@zash.se>
parents:
diff changeset
74 local t = env:txn_begin(nil, 0);
0a21b16b9075 mod_storage_lmdb: Storage module using Lightning Memory-Mapped Database
Kim Alvefur <zash@zash.se>
parents:
diff changeset
75 local db = t:dbi_open(store.."_"..typ, driver_mt.flags);
0a21b16b9075 mod_storage_lmdb: Storage module using Lightning Memory-Mapped Database
Kim Alvefur <zash@zash.se>
parents:
diff changeset
76 assert(t:commit());
0a21b16b9075 mod_storage_lmdb: Storage module using Lightning Memory-Mapped Database
Kim Alvefur <zash@zash.se>
parents:
diff changeset
77
0a21b16b9075 mod_storage_lmdb: Storage module using Lightning Memory-Mapped Database
Kim Alvefur <zash@zash.se>
parents:
diff changeset
78 return setmetatable({ env = env, store = store, type = typ, db = db }, driver_mt);
0a21b16b9075 mod_storage_lmdb: Storage module using Lightning Memory-Mapped Database
Kim Alvefur <zash@zash.se>
parents:
diff changeset
79 end
0a21b16b9075 mod_storage_lmdb: Storage module using Lightning Memory-Mapped Database
Kim Alvefur <zash@zash.se>
parents:
diff changeset
80
0a21b16b9075 mod_storage_lmdb: Storage module using Lightning Memory-Mapped Database
Kim Alvefur <zash@zash.se>
parents:
diff changeset
81 function module.unload()
0a21b16b9075 mod_storage_lmdb: Storage module using Lightning Memory-Mapped Database
Kim Alvefur <zash@zash.se>
parents:
diff changeset
82 env:sync(1);
0a21b16b9075 mod_storage_lmdb: Storage module using Lightning Memory-Mapped Database
Kim Alvefur <zash@zash.se>
parents:
diff changeset
83 env:close();
0a21b16b9075 mod_storage_lmdb: Storage module using Lightning Memory-Mapped Database
Kim Alvefur <zash@zash.se>
parents:
diff changeset
84 end
0a21b16b9075 mod_storage_lmdb: Storage module using Lightning Memory-Mapped Database
Kim Alvefur <zash@zash.se>
parents:
diff changeset
85
0a21b16b9075 mod_storage_lmdb: Storage module using Lightning Memory-Mapped Database
Kim Alvefur <zash@zash.se>
parents:
diff changeset
86 module:provides("storage");