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";
30 local build_url = require"socket.url".build;
34 local host,user,store = module.host;
35 local params = module:get_option("sql");
38 local connections = module:shared "/*/sql/connection-cache";
40 local function db2uri(params)
42 scheme = params.driver,
43 user = params.username,
44 password = params.password,
47 path = params.database,
52 local resolve_relative_path = require "core.configmanager".resolve_relative_path;
54 local function test_connection()
55 if not connection then return nil; end
56 if connection:ping() then
59 module:log("debug", "Database connection closed");
61 connections[dburi] = nil;
64 local function connect()
65 if not test_connection() then
66 prosody.unlock_globals();
67 local dbh, err = DBI.Connect(
68 params.driver, params.database,
69 params.username, params.password,
70 params.host, params.port
72 prosody.lock_globals();
74 module:log("debug", "Database connection failed: %s", tostring(err));
77 module:log("debug", "Successfully connected to database");
78 dbh:autocommit(false); -- don't commit automatically
81 connections[dburi] = dbh;
86 local function create_table()
87 if not module:get_option("sql_manage_tables", true) then
90 local create_sql = "CREATE TABLE `prosody` (`host` TEXT, `user` TEXT, `store` TEXT, `key` TEXT, `type` TEXT, `value` TEXT);";
91 if params.driver == "PostgreSQL" then
92 create_sql = create_sql:gsub("`", "\"");
93 elseif params.driver == "MySQL" then
94 create_sql = create_sql:gsub("`value` TEXT", "`value` MEDIUMTEXT");
97 local stmt, err = connection:prepare(create_sql);
99 local ok = stmt:execute();
100 local commit_ok = connection:commit();
101 if ok and commit_ok then
102 module:log("info", "Initialized new %s database with prosody table", params.driver);
103 local index_sql = "CREATE INDEX `prosody_index` ON `prosody` (`host`, `user`, `store`, `key`)";
104 if params.driver == "PostgreSQL" then
105 index_sql = index_sql:gsub("`", "\"");
106 elseif params.driver == "MySQL" then
107 index_sql = index_sql:gsub("`([,)])", "`(20)%1");
109 local stmt, err = connection:prepare(index_sql);
110 local ok, commit_ok, commit_err;
112 ok, err = stmt:execute();
113 commit_ok, commit_err = connection:commit();
115 if not(ok and commit_ok) then
116 module:log("warn", "Failed to create index (%s), lookups may not be optimised", err or commit_err);
118 elseif params.driver == "MySQL" then -- COMPAT: Upgrade tables from 0.8.0
119 -- Failed to create, but check existing MySQL table here
120 local stmt = connection:prepare("SHOW COLUMNS FROM prosody WHERE Field='value' and Type='text'");
121 local ok = stmt:execute();
122 local commit_ok = connection:commit();
123 if ok and commit_ok then
124 if stmt:rowcount() > 0 then
125 module:log("info", "Upgrading database schema...");
126 local stmt = connection:prepare("ALTER TABLE prosody MODIFY COLUMN `value` MEDIUMTEXT");
127 local ok, err = stmt:execute();
128 local commit_ok = connection:commit();
129 if ok and commit_ok then
130 module:log("info", "Database table automatically upgraded");
132 module:log("error", "Failed to upgrade database schema (%s), please see "
133 .."http://prosody.im/doc/mysql for help",
134 err or "unknown error");
137 repeat until not stmt:fetch();
140 elseif params.driver ~= "SQLite3" then -- SQLite normally fails to prepare for existing table
141 module:log("warn", "Prosody was not able to automatically check/create the database table (%s), "
142 .."see http://prosody.im/doc/modules/mod_storage_sql#table_management for help.",
143 err or "unknown error");
147 do -- process options to get a db connection
149 prosody.unlock_globals();
150 ok, DBI = pcall(require, "DBI");
152 package.loaded["DBI"] = {};
153 module:log("error", "Failed to load the LuaDBI library for accessing SQL databases: %s", DBI);
154 module:log("error", "More information on installing LuaDBI can be found at http://prosody.im/doc/depends#luadbi");
156 prosody.lock_globals();
157 if not ok or not DBI.Connect then
158 return; -- Halt loading of this module
161 params = params or { driver = "SQLite3" };
163 if params.driver == "SQLite3" then
164 params.database = resolve_relative_path(prosody.paths.data or ".", params.database or "prosody.sqlite");
167 assert(params.driver and params.database, "Both the SQL driver and the database need to be specified");
169 dburi = db2uri(params);
170 connection = connections[dburi];
174 -- Automatically create table, ignore failure (table probably already exists)
178 local function serialize(value)
179 local t = type(value);
180 if t == "string" or t == "boolean" or t == "number" then
181 return t, tostring(value);
182 elseif t == "table" then
183 local value,err = json.encode(value);
184 if value then return "json", value; end
187 return nil, "Unhandled value type: "..t;
189 local function deserialize(t, value)
190 if t == "string" then return value;
191 elseif t == "boolean" then
192 if value == "true" then return true;
193 elseif value == "false" then return false; end
194 elseif t == "number" then return tonumber(value);
195 elseif t == "json" then
196 return json.decode(value);
200 local function dosql(sql, ...)
201 if params.driver == "PostgreSQL" then
202 sql = sql:gsub("`", "\"");
204 -- do prepared statement stuff
205 local stmt, err = connection:prepare(sql);
206 if not stmt and not test_connection() then error("connection failed"); end
207 if not stmt then module:log("error", "QUERY FAILED: %s %s", err, debug.traceback()); return nil, err; end
209 local ok, err = stmt:execute(...);
210 if not ok and not test_connection() then error("connection failed"); end
211 if not ok then return nil, err; end
215 local function getsql(sql, ...)
216 return dosql(sql, host or "", user or "", store or "", ...);
218 local function setsql(sql, ...)
219 local stmt, err = getsql(sql, ...);
220 if not stmt then return stmt, err; end
221 return stmt:affected();
223 local function transact(...)
226 local function rollback(...)
227 if connection then connection:rollback(); end -- FIXME check for rollback error?
230 local function commit(...)
231 if not connection:commit() then return nil, "SQL commit failed"; end
235 local function keyval_store_get()
236 local stmt, err = getsql("SELECT * FROM `prosody` WHERE `host`=? AND `user`=? AND `store`=?");
237 if not stmt then return rollback(nil, err); end
241 for row in stmt:rows(true) do
244 local v = deserialize(row.type, row.value);
246 if k ~= "" then result[k] = v; elseif type(v) == "table" then
247 for a,b in pairs(v) do
253 return commit(haveany and result or nil);
255 local function keyval_store_set(data)
256 local affected, err = setsql("DELETE FROM `prosody` WHERE `host`=? AND `user`=? AND `store`=?");
257 if not affected then return rollback(affected, err); end
259 if data and next(data) ~= nil then
260 local extradata = {};
261 for key, value in pairs(data) do
262 if type(key) == "string" and key ~= "" then
263 local t, value = serialize(value);
264 if not t then return rollback(t, value); end
265 local ok, err = setsql("INSERT INTO `prosody` (`host`,`user`,`store`,`key`,`type`,`value`) VALUES (?,?,?,?,?,?)", key, t, value);
266 if not ok then return rollback(ok, err); end
268 extradata[key] = value;
271 if next(extradata) ~= nil then
272 local t, extradata = serialize(extradata);
273 if not t then return rollback(t, extradata); end
274 local ok, err = setsql("INSERT INTO `prosody` (`host`,`user`,`store`,`key`,`type`,`value`) VALUES (?,?,?,?,?,?)", "", t, extradata);
275 if not ok then return rollback(ok, err); end
281 local keyval_store = {};
282 keyval_store.__index = keyval_store;
283 function keyval_store:get(username)
284 user,store = username,self.store;
285 if not connection and not connect() then return nil, "Unable to connect to database"; end
286 local success, ret, err = xpcall(keyval_store_get, debug.traceback);
287 if not connection and connect() then
288 success, ret, err = xpcall(keyval_store_get, debug.traceback);
290 if success then return ret, err; else return rollback(nil, ret); end
292 function keyval_store:set(username, data)
293 user,store = username,self.store;
294 if not connection and not connect() then return nil, "Unable to connect to database"; end
295 local success, ret, err = xpcall(function() return keyval_store_set(data); end, debug.traceback);
296 if not connection and connect() then
297 success, ret, err = xpcall(function() return keyval_store_set(data); end, debug.traceback);
299 if success then return ret, err; else return rollback(nil, ret); end
301 function keyval_store:users()
302 local stmt, err = dosql("SELECT DISTINCT `user` FROM `prosody` WHERE `host`=? AND `store`=?", host, self.store);
304 return rollback(nil, err);
306 local next = stmt:rows();
307 return commit(function()
309 return row and row[1];
313 local function map_store_get(key)
314 local stmt, err = getsql("SELECT * FROM `prosody` WHERE `host`=? AND `user`=? AND `store`=? AND `key`=?", key or "");
315 if not stmt then return rollback(nil, err); end
319 for row in stmt:rows(true) do
322 local v = deserialize(row.type, row.value);
324 if k ~= "" then result[k] = v; elseif type(v) == "table" then
325 for a,b in pairs(v) do
331 return commit(haveany and result[key] or nil);
333 local function map_store_set(key, data)
334 local affected, err = setsql("DELETE FROM `prosody` WHERE `host`=? AND `user`=? AND `store`=? AND `key`=?", key or "");
335 if not affected then return rollback(affected, err); end
337 if data and next(data) ~= nil then
338 if type(key) == "string" and key ~= "" then
339 local t, value = serialize(data);
340 if not t then return rollback(t, value); end
341 local ok, err = setsql("INSERT INTO `prosody` (`host`,`user`,`store`,`key`,`type`,`value`) VALUES (?,?,?,?,?,?)", key, t, value);
342 if not ok then return rollback(ok, err); end
344 -- TODO non-string keys
350 local map_store = {};
351 map_store.__index = map_store;
352 function map_store:get(username, key)
353 user,store = username,self.store;
354 local success, ret, err = xpcall(function() return map_store_get(key); end, debug.traceback);
355 if success then return ret, err; else return rollback(nil, ret); end
357 function map_store:set(username, key, data)
358 user,store = username,self.store;
359 local success, ret, err = xpcall(function() return map_store_set(key, data); end, debug.traceback);
360 if success then return ret, err; else return rollback(nil, ret); end
363 local list_store = {};
364 list_store.__index = list_store;
365 function list_store:scan(username, from, to, jid, typ)
366 user,store = username,self.store;
368 local cols = {"from", "to", "jid", "typ"};
369 local vals = { from , to , jid , typ };
371 local query = "SELECT * FROM `prosodyarchive` WHERE `host`=? AND `user`=? AND `store`=?";
373 query = query.." ORDER BY time";
374 --local stmt, err = getsql("SELECT * FROM `prosody` WHERE `host`=? AND `user`=? AND `store`=? AND `key`=?", key or "");
376 return nil, "not-implemented"
381 function driver:open(store, typ)
382 if not typ then -- default key-value store
383 return setmetatable({ store = store }, keyval_store);
385 return nil, "unsupported-store";
388 function driver:stores(username)
389 local sql = "SELECT DISTINCT `store` FROM `prosody` WHERE `host`=? AND `user`" ..
390 (username == true and "!=?" or "=?");
391 if username == true or not username then
394 local stmt, err = dosql(sql, host, username);
396 return rollback(nil, err);
398 local next = stmt:rows();
399 return commit(function()
401 return row and row[1];
405 function driver:purge(username)
406 local stmt, err = dosql("DELETE FROM `prosody` WHERE `host`=? AND `user`=?", host, username);
407 if not stmt then return rollback(stmt, err); end
408 local changed, err = stmt:affected();
409 if not changed then return rollback(changed, err); end
410 return commit(true, changed);
413 module:provides("storage", driver);