5 Prosody - key-value, map
6 | host | user | store | key | type | value |
8 | host | user | store | key | time | stanzatype | jsonvalue |
12 | host | user | "roster" | "contactjid" | type | value |
13 | host | user | "roster" | NULL | "json" | roster[false] data |
15 | host | user | "accounts" | "username" | type | value |
17 Offline - ProsodyArchive
18 | host | user | "offline" | "contactjid" | time | "message" | json|XML |
23 local tostring = tostring;
24 local tonumber = tonumber;
27 local setmetatable = setmetatable;
28 local xpcall = xpcall;
29 local json = require "util.json";
32 local host,user,store = module.host;
33 local params = module:get_option("sql");
35 do -- process options to get a db connection
36 local DBI = require "DBI";
38 params = params or { driver = "SQLite3", database = "prosody.sqlite" };
39 assert(params.driver and params.database, "invalid params");
41 prosody.unlock_globals();
42 local dbh, err = DBI.Connect(
43 params.driver, params.database,
44 params.username, params.password,
45 params.host, params.port
47 prosody.lock_globals();
50 dbh:autocommit(false); -- don't commit automatically
53 if params.driver == "SQLite3" then -- auto initialize
54 local stmt = assert(connection:prepare("SELECT COUNT(*) FROM `sqlite_master` WHERE `type`='table' AND `name`='Prosody';"));
55 local ok = assert(stmt:execute());
56 local count = stmt:fetch()[1];
58 local stmt = assert(connection:prepare("CREATE TABLE `Prosody` (`host` TEXT, `user` TEXT, `store` TEXT, `key` TEXT, `type` TEXT, `value` TEXT);"));
59 assert(stmt:execute());
60 module:log("debug", "Initialized new SQLite3 database");
62 assert(connection:commit());
63 --print("===", json.encode())
67 local function serialize(value)
68 local t = type(value);
69 if t == "string" or t == "boolean" or t == "number" then
70 return t, tostring(value);
71 elseif t == "table" then
72 local value,err = json.encode(value);
73 if value then return "json", value; end
76 return nil, "Unhandled value type: "..t;
78 local function deserialize(t, value)
79 if t == "string" then return value;
80 elseif t == "boolean" then
81 if value == "true" then return true;
82 elseif value == "false" then return false; end
83 elseif t == "number" then return tonumber(value);
84 elseif t == "json" then
85 return json.decode(value);
89 local function getsql(sql, ...)
90 if params.driver == "PostgreSQL" then
91 sql = sql:gsub("`", "\"");
93 -- do prepared statement stuff
94 local stmt, err = connection:prepare(sql);
95 if not stmt then module:log("error", "QUERY FAILED: %s %s", err, debug.traceback()); return nil, err; end
97 local ok, err = stmt:execute(host or "", user or "", store or "", ...);
98 if not ok then return nil, err; end
102 local function setsql(sql, ...)
103 local stmt, err = getsql(sql, ...);
104 if not stmt then return stmt, err; end
105 return stmt:affected();
107 local function transact(...)
110 local function rollback(...)
111 connection:rollback(); -- FIXME check for rollback error?
114 local function commit(...)
115 if not connection:commit() then return nil, "SQL commit failed"; end
119 local function keyval_store_get()
120 local stmt, err = getsql("SELECT * FROM `Prosody` WHERE `host`=? AND `user`=? AND `store`=?");
121 if not stmt then return nil, err; end
125 for row in stmt:rows(true) do
128 local v = deserialize(row.type, row.value);
130 if k ~= "" then result[k] = v; elseif type(v) == "table" then
131 for a,b in pairs(v) do
137 return commit(haveany and result or nil);
139 local function keyval_store_set(data)
140 local affected, err = setsql("DELETE FROM `Prosody` WHERE `host`=? AND `user`=? AND `store`=?");
142 if data and next(data) ~= nil then
143 local extradata = {};
144 for key, value in pairs(data) do
145 if type(key) == "string" and key ~= "" then
146 local t, value = serialize(value);
147 if not t then return rollback(t, value); end
148 local ok, err = setsql("INSERT INTO `Prosody` (`host`,`user`,`store`,`key`,`type`,`value`) VALUES (?,?,?,?,?,?)", key, t, value);
149 if not ok then return rollback(ok, err); end
151 extradata[key] = value;
154 if next(extradata) ~= nil then
155 local t, extradata = serialize(extradata);
156 if not t then return rollback(t, extradata); end
157 local ok, err = setsql("INSERT INTO `Prosody` (`host`,`user`,`store`,`key`,`type`,`value`) VALUES (?,?,?,?,?,?)", "", t, extradata);
158 if not ok then return rollback(ok, err); end
164 local keyval_store = {};
165 keyval_store.__index = keyval_store;
166 function keyval_store:get(username)
167 user,store = username,self.store;
168 local success, ret, err = xpcall(keyval_store_get, debug.traceback);
169 if success then return ret, err; else return rollback(nil, ret); end
171 function keyval_store:set(username, data)
172 user,store = username,self.store;
173 local success, ret, err = xpcall(function() return keyval_store_set(data); end, debug.traceback);
174 if success then return ret, err; else return rollback(nil, ret); end
177 local function map_store_get(key)
178 local stmt, err = getsql("SELECT * FROM `Prosody` WHERE `host`=? AND `user`=? AND `store`=? AND `key`=?", key or "");
179 if not stmt then return nil, err; end
183 for row in stmt:rows(true) do
186 local v = deserialize(row.type, row.value);
188 if k ~= "" then result[k] = v; elseif type(v) == "table" then
189 for a,b in pairs(v) do
195 return commit(haveany and result[key] or nil);
197 local function map_store_set(key, data)
198 local affected, err = setsql("DELETE FROM `Prosody` WHERE `host`=? AND `user`=? AND `store`=? AND `key`=?", key or "");
200 if data and next(data) ~= nil then
201 if type(key) == "string" and key ~= "" then
202 local t, value = serialize(data);
203 if not t then return rollback(t, value); end
204 local ok, err = setsql("INSERT INTO `Prosody` (`host`,`user`,`store`,`key`,`type`,`value`) VALUES (?,?,?,?,?,?)", key, t, value);
205 if not ok then return rollback(ok, err); end
207 -- TODO non-string keys
213 local map_store = {};
214 map_store.__index = map_store;
215 function map_store:get(username, key)
216 user,store = username,self.store;
217 local success, ret, err = xpcall(function() return map_store_get(key); end, debug.traceback);
218 if success then return ret, err; else return rollback(nil, ret); end
220 function map_store:set(username, key, data)
221 user,store = username,self.store;
222 local success, ret, err = xpcall(function() return map_store_set(key, data); end, debug.traceback);
223 if success then return ret, err; else return rollback(nil, ret); end
226 local list_store = {};
227 list_store.__index = list_store;
228 function list_store:scan(username, from, to, jid, typ)
229 user,store = username,self.store;
231 local cols = {"from", "to", "jid", "typ"};
232 local vals = { from , to , jid , typ };
234 local query = "SELECT * FROM `ProsodyArchive` WHERE `host`=? AND `user`=? AND `store`=?";
236 query = query.." ORDER BY time";
237 --local stmt, err = getsql("SELECT * FROM `Prosody` WHERE `host`=? AND `user`=? AND `store`=? AND `key`=?", key or "");
239 return nil, "not-implemented"
242 local driver = { name = "sql" };
244 function driver:open(store, typ)
245 if not typ then -- default key-value store
246 return setmetatable({ store = store }, keyval_store);
248 return nil, "unsupported-store";
251 module:add_item("data-driver", driver);