2 local json = require "util.json";
3 local xml_parse = require "util.xml".parse;
4 local uuid = require "util.uuid";
5 local resolve_relative_path = require "core.configmanager".resolve_relative_path;
7 local stanza_mt = require"util.stanza".stanza_mt;
8 local getmetatable = getmetatable;
9 local t_concat = table.concat;
10 local function is_stanza(x) return getmetatable(x) == stanza_mt; end
12 local noop = function() end
14 local function iterator(result)
15 return function(result)
23 local mod_sql = module:require("sql");
24 local params = module:get_option("sql");
26 local engine; -- TODO create engine
28 local function create_table()
29 local Table,Column,Index = mod_sql.Table,mod_sql.Column,mod_sql.Index;
31 local ProsodyTable = Table {
33 Column { name="host", type="TEXT", nullable=false };
34 Column { name="user", type="TEXT", nullable=false };
35 Column { name="store", type="TEXT", nullable=false };
36 Column { name="key", type="TEXT", nullable=false };
37 Column { name="type", type="TEXT", nullable=false };
38 Column { name="value", type="TEXT", nullable=false };
39 Index { name="prosody_index", "host", "user", "store", "key" };
41 engine:transaction(function()
42 ProsodyTable:create(engine);
44 if not module:get_option("sql_manage_tables", true) then
48 local create_sql = "CREATE TABLE `prosody` (`host` TEXT, `user` TEXT, `store` TEXT, `key` TEXT, `type` TEXT, `value` TEXT);";
49 if params.driver == "PostgreSQL" then
50 create_sql = create_sql:gsub("`", "\"");
51 elseif params.driver == "MySQL" then
52 create_sql = create_sql:gsub("`value` TEXT", "`value` MEDIUMTEXT")
53 :gsub(";$", " CHARACTER SET 'utf8' COLLATE 'utf8_bin';");
56 local index_sql = "CREATE INDEX `prosody_index` ON `prosody` (`host`, `user`, `store`, `key`)";
57 if params.driver == "PostgreSQL" then
58 index_sql = index_sql:gsub("`", "\"");
59 elseif params.driver == "MySQL" then
60 index_sql = index_sql:gsub("`([,)])", "`(20)%1");
63 local success,err = engine:transaction(function()
64 engine:execute(create_sql);
65 engine:execute(index_sql);
67 if not success then -- so we failed to create
68 if params.driver == "MySQL" then
69 success,err = engine:transaction(function()
70 local result = engine:execute("SHOW COLUMNS FROM prosody WHERE Field='value' and Type='text'");
71 if result:rowcount() > 0 then
72 module:log("info", "Upgrading database schema...");
73 engine:execute("ALTER TABLE prosody MODIFY COLUMN `value` MEDIUMTEXT");
74 module:log("info", "Database table automatically upgraded");
79 module:log("error", "Failed to check/upgrade database schema (%s), please see "
80 .."http://prosody.im/doc/mysql for help",
81 err or "unknown error");
85 local ProsodyArchiveTable = Table {
86 name="prosodyarchive";
87 Column { name="sort_id", type="INTEGER PRIMARY KEY AUTOINCREMENT", nullable=false };
88 Column { name="host", type="TEXT", nullable=false };
89 Column { name="user", type="TEXT", nullable=false };
90 Column { name="store", type="TEXT", nullable=false };
91 Column { name="key", type="TEXT", nullable=false }; -- item id
92 Column { name="when", type="INTEGER", nullable=false }; -- timestamp
93 Column { name="with", type="TEXT", nullable=false }; -- related id
94 Column { name="type", type="TEXT", nullable=false };
95 Column { name="value", type=params.driver == "MySQL" and "MEDIUMTEXT" or "TEXT", nullable=false };
96 Index { name="prosodyarchive_index", "host", "user", "store", "key" };
98 engine:transaction(function()
99 ProsodyArchiveTable:create(engine);
102 local function set_encoding()
103 if params.driver == "SQLite3" then return end
104 local set_names_query = "SET NAMES 'utf8';";
105 if params.driver == "MySQL" then
106 set_names_query = set_names_query:gsub(";$", " COLLATE 'utf8_bin';");
108 local success,err = engine:transaction(function() return engine:execute(set_names_query); end);
110 module:log("error", "Failed to set database connection encoding to UTF8: %s", err);
113 if params.driver == "MySQL" then
114 -- COMPAT w/pre-0.9: Upgrade tables to UTF-8 if not already
115 local check_encoding_query = "SELECT `COLUMN_NAME`,`COLUMN_TYPE` FROM `information_schema`.`columns` WHERE `TABLE_NAME`='prosody' AND ( `CHARACTER_SET_NAME`!='utf8' OR `COLLATION_NAME`!='utf8_bin' );";
116 local success,err = engine:transaction(function()
117 local result = engine:execute(check_encoding_query);
118 local n_bad_columns = result:rowcount();
119 if n_bad_columns > 0 then
120 module:log("warn", "Found %d columns in prosody table requiring encoding change, updating now...", n_bad_columns);
121 local fix_column_query1 = "ALTER TABLE `prosody` CHANGE `%s` `%s` BLOB;";
122 local fix_column_query2 = "ALTER TABLE `prosody` CHANGE `%s` `%s` %s CHARACTER SET 'utf8' COLLATE 'utf8_bin';";
123 for row in result:rows() do
124 local column_name, column_type = unpack(row);
125 engine:execute(fix_column_query1:format(column_name, column_name));
126 engine:execute(fix_column_query2:format(column_name, column_name, column_type));
128 module:log("info", "Database encoding upgrade complete!");
131 local success,err = engine:transaction(function() return engine:execute(check_encoding_query); end);
133 module:log("error", "Failed to check/upgrade database encoding: %s", err or "unknown error");
138 do -- process options to get a db connection
139 params = params or { driver = "SQLite3" };
141 if params.driver == "SQLite3" then
142 params.database = resolve_relative_path(prosody.paths.data or ".", params.database or "prosody.sqlite");
145 assert(params.driver and params.database, "Both the SQL driver and the database need to be specified");
147 --local dburi = db2uri(params);
148 engine = mod_sql:create_engine(params);
153 -- Automatically create table, ignore failure (table probably already exists)
157 local function serialize(value)
158 local t = type(value);
159 if t == "string" or t == "boolean" or t == "number" then
160 return t, tostring(value);
161 elseif is_stanza(value) then
162 return "xml", tostring(value);
163 elseif t == "table" then
164 local value,err = json.encode(value);
165 if value then return "json", value; end
168 return nil, "Unhandled value type: "..t;
170 local function deserialize(t, value)
171 if t == "string" then return value;
172 elseif t == "boolean" then
173 if value == "true" then return true;
174 elseif value == "false" then return false; end
175 elseif t == "number" then return tonumber(value);
176 elseif t == "json" then
177 return json.decode(value);
178 elseif t == "xml" then
179 return xml_parse(value);
183 local host = module.host;
186 local function keyval_store_get()
189 for row in engine:select("SELECT `key`,`type`,`value` FROM `prosody` WHERE `host`=? AND `user`=? AND `store`=?", host, user or "", store) do
192 local v = deserialize(row[2], row[3]);
194 if k ~= "" then result[k] = v; elseif type(v) == "table" then
195 for a,b in pairs(v) do
205 local function keyval_store_set(data)
206 engine:delete("DELETE FROM `prosody` WHERE `host`=? AND `user`=? AND `store`=?", host, user or "", store);
208 if data and next(data) ~= nil then
209 local extradata = {};
210 for key, value in pairs(data) do
211 if type(key) == "string" and key ~= "" then
212 local t, value = serialize(value);
214 engine:insert("INSERT INTO `prosody` (`host`,`user`,`store`,`key`,`type`,`value`) VALUES (?,?,?,?,?,?)", host, user or "", store, key, t, value);
216 extradata[key] = value;
219 if next(extradata) ~= nil then
220 local t, extradata = serialize(extradata);
221 assert(t, extradata);
222 engine:insert("INSERT INTO `prosody` (`host`,`user`,`store`,`key`,`type`,`value`) VALUES (?,?,?,?,?,?)", host, user or "", store, "", t, extradata);
228 local keyval_store = {};
229 keyval_store.__index = keyval_store;
230 function keyval_store:get(username)
231 user,store = username,self.store;
232 return select(2, engine:transaction(keyval_store_get));
234 function keyval_store:set(username, data)
235 user,store = username,self.store;
236 return engine:transaction(function()
237 return keyval_store_set(data);
240 function keyval_store:users()
241 local ok, result = engine:transaction(function()
242 return engine:select("SELECT DISTINCT `user` FROM `prosody` WHERE `host`=? AND `store`=?", host, self.store);
244 if not ok then return ok, result end
245 return iterator(result);
248 local archive_store = {}
249 archive_store.__index = archive_store
250 function archive_store:append(username, when, with, value)
251 local user,store = username,self.store;
252 return engine:transaction(function()
253 local key = uuid.generate();
254 local t, value = serialize(value);
255 engine:insert("INSERT INTO `prosodyarchive` (`host`, `user`, `store`, `when`, `with`, `key`, `type`, `value`) VALUES (?,?,?,?,?,?,?,?)", host, user or "", store, when, with, key, t, value);
260 -- Helpers for building the WHERE clause
261 local function archive_where(query, args, where)
262 -- Time range, inclusive
264 args[#args+1] = query.start
265 where[#where+1] = "`when` >= ?"
269 args[#args+1] = query["end"];
271 where[#where] = "`when` BETWEEN ? AND ?" -- is this inclusive?
273 where[#where+1] = "`when` >= ?"
279 where[#where+1] = "`with` = ?";
280 args[#args+1] = query.with
285 where[#where+1] = "`key` = ?";
286 args[#args+1] = query.key
289 local function archive_where_id_range(query, args, where)
290 -- Before or after specific item, exclusive
291 if query.after then -- keys better be unique!
292 where[#where+1] = "`sort_id` > (SELECT `sort_id` FROM `prosodyarchive` WHERE `key` = ? LIMIT 1)"
293 args[#args+1] = query.after
296 where[#where+1] = "`sort_id` < (SELECT `sort_id` FROM `prosodyarchive` WHERE `key` = ? LIMIT 1)"
297 args[#args+1] = query.before
301 function archive_store:find(username, query)
303 local user,store = username,self.store;
305 local ok, result = engine:transaction(function()
306 local sql_query = "SELECT `key`, `type`, `value`, `when` FROM `prosodyarchive` WHERE %s ORDER BY `sort_id` %s%s;";
307 local args = { host, user or "", store, };
308 local where = { "`host` = ?", "`user` = ?", "`store` = ?", };
310 archive_where(query, args, where);
314 local stats = engine:select(sql_query:gsub("^(SELECT).-(FROM)", "%1 COUNT(*) %2"):format(t_concat(where, " AND "), "DESC", ""), unpack(args));
316 local _total = stats()
317 total = _total and _total[1];
319 if query.limit == 0 then -- Skip the real query
324 archive_where_id_range(query, args, where);
327 args[#args+1] = query.limit;
330 sql_query = sql_query:format(t_concat(where, " AND "), query.reverse and "DESC" or "ASC", query.limit and " LIMIT ?" or "");
331 module:log("debug", sql_query);
332 return engine:select(sql_query, unpack(args));
334 if not ok then return ok, result end
336 local row = result();
338 return row[1], deserialize(row[2], row[3]), row[4];
344 keyval = keyval_store;
345 archive = archive_store;
350 function driver:open(store, typ)
351 local store_mt = stores[typ or "keyval"];
353 return setmetatable({ store = store }, store_mt);
355 return nil, "unsupported-store";
358 function driver:stores(username)
359 local sql = "SELECT DISTINCT `store` FROM `prosody` WHERE `host`=? AND `user`" ..
360 (username == true and "!=?" or "=?");
361 if username == true or not username then
364 local ok, result = engine:transaction(function()
365 return engine:select(sql, host, username);
367 if not ok then return ok, result end
368 return iterator(result);
371 function driver:purge(username)
372 return engine:transaction(function()
373 local stmt,err = engine:delete("DELETE FROM `prosody` WHERE `host`=? AND `user`=?", host, username);
378 module:provides("storage", driver);