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";
33 local host,user,store = module.host;
34 local params = module:get_option("sql");
36 local resolve_relative_path = require "core.configmanager".resolve_relative_path;
38 local function test_connection()
39 if not connection then return nil; end
40 if connection:ping() then
43 module:log("debug", "Database connection closed");
47 local function connect()
48 if not test_connection() then
49 prosody.unlock_globals();
50 local dbh, err = DBI.Connect(
51 params.driver, params.database,
52 params.username, params.password,
53 params.host, params.port
55 prosody.lock_globals();
57 module:log("debug", "Database connection failed: %s", tostring(err));
60 module:log("debug", "Successfully connected to database");
61 dbh:autocommit(false); -- don't commit automatically
67 local function create_table()
68 local create_sql = "CREATE TABLE `prosody` (`host` TEXT, `user` TEXT, `store` TEXT, `key` TEXT, `type` TEXT, `value` TEXT);";
69 if params.driver == "PostgreSQL" then
70 create_sql = create_sql:gsub("`", "\"");
71 elseif params.driver == "MySQL" then
72 create_sql = create_sql:gsub("`value` TEXT", "`value` MEDIUMTEXT");
75 local stmt = connection:prepare(create_sql);
77 local ok = stmt:execute();
78 local commit_ok = connection:commit();
79 if ok and commit_ok then
80 module:log("info", "Initialized new %s database with prosody table", params.driver);
81 local index_sql = "CREATE INDEX `prosody_index` ON `prosody` (`host`, `user`, `store`, `key`)";
82 if params.driver == "PostgreSQL" then
83 index_sql = index_sql:gsub("`", "\"");
84 elseif params.driver == "MySQL" then
85 index_sql = index_sql:gsub("`([,)])", "`(20)%1");
87 local stmt, err = connection:prepare(index_sql);
88 local ok, commit_ok, commit_err;
90 ok, err = stmt:execute();
91 commit_ok, commit_err = connection:commit();
93 if not(ok and commit_ok) then
94 module:log("warn", "Failed to create index (%s), lookups may not be optimised", err or commit_err);
96 elseif params.driver == "MySQL" then -- COMPAT: Upgrade tables from 0.8.0
97 -- Failed to create, but check existing MySQL table here
98 local stmt = connection:prepare("SHOW COLUMNS FROM prosody WHERE Field='value' and Type='text'");
99 local ok = stmt:execute();
100 local commit_ok = connection:commit();
101 if ok and commit_ok then
102 if stmt:rowcount() > 0 then
103 local stmt = connection:prepare("ALTER TABLE prosody MODIFY COLUMN `value` MEDIUMTEXT");
104 local ok = stmt:execute();
105 local commit_ok = connection:commit();
106 if ok and commit_ok then
107 module:log("info", "Database table automatically upgraded");
110 repeat until not stmt:fetch();
112 module:log("error", "Failed to upgrade database schema, please see http://prosody.im/doc/mysql for help");
118 do -- process options to get a db connection
120 prosody.unlock_globals();
121 ok, DBI = pcall(require, "DBI");
123 package.loaded["DBI"] = {};
124 module:log("error", "Failed to load the LuaDBI library for accessing SQL databases: %s", DBI);
125 module:log("error", "More information on installing LuaDBI can be found at http://prosody.im/doc/depends#luadbi");
127 prosody.lock_globals();
128 if not ok or not DBI.Connect then
129 return; -- Halt loading of this module
132 params = params or { driver = "SQLite3" };
134 if params.driver == "SQLite3" then
135 params.database = resolve_relative_path(prosody.paths.data or ".", params.database or "prosody.sqlite");
138 assert(params.driver and params.database, "Both the SQL driver and the database need to be specified");
142 -- Automatically create table, ignore failure (table probably already exists)
146 local function serialize(value)
147 local t = type(value);
148 if t == "string" or t == "boolean" or t == "number" then
149 return t, tostring(value);
150 elseif t == "table" then
151 local value,err = json.encode(value);
152 if value then return "json", value; end
155 return nil, "Unhandled value type: "..t;
157 local function deserialize(t, value)
158 if t == "string" then return value;
159 elseif t == "boolean" then
160 if value == "true" then return true;
161 elseif value == "false" then return false; end
162 elseif t == "number" then return tonumber(value);
163 elseif t == "json" then
164 return json.decode(value);
168 local function getsql(sql, ...)
169 if params.driver == "PostgreSQL" then
170 sql = sql:gsub("`", "\"");
172 -- do prepared statement stuff
173 local stmt, err = connection:prepare(sql);
174 if not stmt and not test_connection() then error("connection failed"); end
175 if not stmt then module:log("error", "QUERY FAILED: %s %s", err, debug.traceback()); return nil, err; end
177 local ok, err = stmt:execute(host or "", user or "", store or "", ...);
178 if not ok and not test_connection() then error("connection failed"); end
179 if not ok then return nil, err; end
183 local function setsql(sql, ...)
184 local stmt, err = getsql(sql, ...);
185 if not stmt then return stmt, err; end
186 return stmt:affected();
188 local function transact(...)
191 local function rollback(...)
192 if connection then connection:rollback(); end -- FIXME check for rollback error?
195 local function commit(...)
196 if not connection:commit() then return nil, "SQL commit failed"; end
200 local function keyval_store_get()
201 local stmt, err = getsql("SELECT * FROM `prosody` WHERE `host`=? AND `user`=? AND `store`=?");
202 if not stmt then return rollback(nil, err); end
206 for row in stmt:rows(true) do
209 local v = deserialize(row.type, row.value);
211 if k ~= "" then result[k] = v; elseif type(v) == "table" then
212 for a,b in pairs(v) do
218 return commit(haveany and result or nil);
220 local function keyval_store_set(data)
221 local affected, err = setsql("DELETE FROM `prosody` WHERE `host`=? AND `user`=? AND `store`=?");
222 if not affected then return rollback(affected, err); end
224 if data and next(data) ~= nil then
225 local extradata = {};
226 for key, value in pairs(data) do
227 if type(key) == "string" and key ~= "" then
228 local t, value = serialize(value);
229 if not t then return rollback(t, value); end
230 local ok, err = setsql("INSERT INTO `prosody` (`host`,`user`,`store`,`key`,`type`,`value`) VALUES (?,?,?,?,?,?)", key, t, value);
231 if not ok then return rollback(ok, err); end
233 extradata[key] = value;
236 if next(extradata) ~= nil then
237 local t, extradata = serialize(extradata);
238 if not t then return rollback(t, extradata); end
239 local ok, err = setsql("INSERT INTO `prosody` (`host`,`user`,`store`,`key`,`type`,`value`) VALUES (?,?,?,?,?,?)", "", t, extradata);
240 if not ok then return rollback(ok, err); end
246 local keyval_store = {};
247 keyval_store.__index = keyval_store;
248 function keyval_store:get(username)
249 user,store = username,self.store;
250 if not connection and not connect() then return nil, "Unable to connect to database"; end
251 local success, ret, err = xpcall(keyval_store_get, debug.traceback);
252 if not connection and connect() then
253 success, ret, err = xpcall(keyval_store_get, debug.traceback);
255 if success then return ret, err; else return rollback(nil, ret); end
257 function keyval_store:set(username, data)
258 user,store = username,self.store;
259 if not connection and not connect() then return nil, "Unable to connect to database"; end
260 local success, ret, err = xpcall(function() return keyval_store_set(data); end, debug.traceback);
261 if not connection and connect() then
262 success, ret, err = xpcall(function() return keyval_store_set(data); end, debug.traceback);
264 if success then return ret, err; else return rollback(nil, ret); end
267 local function map_store_get(key)
268 local stmt, err = getsql("SELECT * FROM `prosody` WHERE `host`=? AND `user`=? AND `store`=? AND `key`=?", key or "");
269 if not stmt then return rollback(nil, err); end
273 for row in stmt:rows(true) do
276 local v = deserialize(row.type, row.value);
278 if k ~= "" then result[k] = v; elseif type(v) == "table" then
279 for a,b in pairs(v) do
285 return commit(haveany and result[key] or nil);
287 local function map_store_set(key, data)
288 local affected, err = setsql("DELETE FROM `prosody` WHERE `host`=? AND `user`=? AND `store`=? AND `key`=?", key or "");
289 if not affected then return rollback(affected, err); end
291 if data and next(data) ~= nil then
292 if type(key) == "string" and key ~= "" then
293 local t, value = serialize(data);
294 if not t then return rollback(t, value); end
295 local ok, err = setsql("INSERT INTO `prosody` (`host`,`user`,`store`,`key`,`type`,`value`) VALUES (?,?,?,?,?,?)", key, t, value);
296 if not ok then return rollback(ok, err); end
298 -- TODO non-string keys
304 local map_store = {};
305 map_store.__index = map_store;
306 function map_store:get(username, key)
307 user,store = username,self.store;
308 local success, ret, err = xpcall(function() return map_store_get(key); end, debug.traceback);
309 if success then return ret, err; else return rollback(nil, ret); end
311 function map_store:set(username, key, data)
312 user,store = username,self.store;
313 local success, ret, err = xpcall(function() return map_store_set(key, data); end, debug.traceback);
314 if success then return ret, err; else return rollback(nil, ret); end
317 local list_store = {};
318 list_store.__index = list_store;
319 function list_store:scan(username, from, to, jid, typ)
320 user,store = username,self.store;
322 local cols = {"from", "to", "jid", "typ"};
323 local vals = { from , to , jid , typ };
325 local query = "SELECT * FROM `prosodyarchive` WHERE `host`=? AND `user`=? AND `store`=?";
327 query = query.." ORDER BY time";
328 --local stmt, err = getsql("SELECT * FROM `prosody` WHERE `host`=? AND `user`=? AND `store`=? AND `key`=?", key or "");
330 return nil, "not-implemented"
333 local driver = { name = "sql" };
335 function driver:open(store, typ)
336 if not typ then -- default key-value store
337 return setmetatable({ store = store }, keyval_store);
339 return nil, "unsupported-store";
342 module:add_item("data-driver", driver);