--- /dev/null
+
+local json = require "util.json";
+local resolve_relative_path = require "core.configmanager".resolve_relative_path;
+
+local mod_sql = module:require("sql");
+local params = module:get_option("sql");
+
+local engine; -- TODO create engine
+
+local function create_table()
+ --[[local Table,Column,Index = mod_sql.Table,mod_sql.Column,mod_sql.Index;
+ local ProsodyTable = Table {
+ name="prosody";
+ Column { name="host", type="TEXT", nullable=false };
+ Column { name="user", type="TEXT", nullable=false };
+ Column { name="store", type="TEXT", nullable=false };
+ Column { name="key", type="TEXT", nullable=false };
+ Column { name="type", type="TEXT", nullable=false };
+ Column { name="value", type="TEXT", nullable=false };
+ Index { name="prosody_index", "host", "user", "store", "key" };
+ };
+ engine:transaction(function()
+ ProsodyTable:create(engine);
+ end);]]
+ if not module:get_option("sql_manage_tables", true) then
+ return;
+ end
+
+ local create_sql = "CREATE TABLE `prosody` (`host` TEXT, `user` TEXT, `store` TEXT, `key` TEXT, `type` TEXT, `value` TEXT);";
+ if params.driver == "PostgreSQL" then
+ create_sql = create_sql:gsub("`", "\"");
+ elseif params.driver == "MySQL" then
+ create_sql = create_sql:gsub("`value` TEXT", "`value` MEDIUMTEXT")
+ :gsub(";$", " CHARACTER SET 'utf8' COLLATE 'utf8_bin';");
+ end
+
+ local index_sql = "CREATE INDEX `prosody_index` ON `prosody` (`host`, `user`, `store`, `key`)";
+ if params.driver == "PostgreSQL" then
+ index_sql = index_sql:gsub("`", "\"");
+ elseif params.driver == "MySQL" then
+ index_sql = index_sql:gsub("`([,)])", "`(20)%1");
+ end
+
+ local success,err = engine:transaction(function()
+ engine:execute(create_sql);
+ engine:execute(index_sql);
+ end);
+ if not success then -- so we failed to create
+ if params.driver == "MySQL" then
+ success,err = engine:transaction(function()
+ local result = engine:execute("SHOW COLUMNS FROM prosody WHERE Field='value' and Type='text'");
+ if result:rowcount() > 0 then
+ module:log("info", "Upgrading database schema...");
+ engine:execute("ALTER TABLE prosody MODIFY COLUMN `value` MEDIUMTEXT");
+ module:log("info", "Database table automatically upgraded");
+ end
+ return true;
+ end);
+ if not success then
+ module:log("error", "Failed to check/upgrade database schema (%s), please see "
+ .."http://prosody.im/doc/mysql for help",
+ err or "unknown error");
+ end
+ end
+ end
+end
+local function set_encoding()
+ if params.driver ~= "SQLite3" then
+ local set_names_query = "SET NAMES 'utf8';";
+ if params.driver == "MySQL" then
+ set_names_query = set_names_query:gsub(";$", " COLLATE 'utf8_bin';");
+ end
+ local success,err = engine:transaction(function() return engine:execute(set_names_query); end);
+ if not success then
+ module:log("error", "Failed to set database connection encoding to UTF8: %s", err);
+ return;
+ end
+ if params.driver == "MySQL" then
+ -- COMPAT w/pre-0.9: Upgrade tables to UTF-8 if not already
+ 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' );";
+ local success,err = engine:transaction(function()
+ local result = engine:execute(check_encoding_query);
+ local n_bad_columns = result:rowcount();
+ if n_bad_columns > 0 then
+ module:log("warn", "Found %d columns in prosody table requiring encoding change, updating now...", n_bad_columns);
+ local fix_column_query1 = "ALTER TABLE `prosody` CHANGE `%s` `%s` BLOB;";
+ local fix_column_query2 = "ALTER TABLE `prosody` CHANGE `%s` `%s` %s CHARACTER SET 'utf8' COLLATE 'utf8_bin';";
+ for row in success:rows() do
+ local column_name, column_type = unpack(row);
+ engine:execute(fix_column_query1:format(column_name, column_name));
+ engine:execute(fix_column_query2:format(column_name, column_name, column_type));
+ end
+ module:log("info", "Database encoding upgrade complete!");
+ end
+ end);
+ local success,err = engine:transaction(function() return engine:execute(check_encoding_query); end);
+ if not success then
+ module:log("error", "Failed to check/upgrade database encoding: %s", err or "unknown error");
+ end
+ end
+ end
+end
+
+do -- process options to get a db connection
+ params = params or { driver = "SQLite3" };
+
+ if params.driver == "SQLite3" then
+ params.database = resolve_relative_path(prosody.paths.data or ".", params.database or "prosody.sqlite");
+ end
+
+ assert(params.driver and params.database, "Both the SQL driver and the database need to be specified");
+
+ --local dburi = db2uri(params);
+ engine = mod_sql:create_engine(params);
+
+ -- Encoding mess
+ set_encoding();
+
+ -- Automatically create table, ignore failure (table probably already exists)
+ create_table();
+end
+
+local function serialize(value)
+ local t = type(value);
+ if t == "string" or t == "boolean" or t == "number" then
+ return t, tostring(value);
+ elseif t == "table" then
+ local value,err = json.encode(value);
+ if value then return "json", value; end
+ return nil, err;
+ end
+ return nil, "Unhandled value type: "..t;
+end
+local function deserialize(t, value)
+ if t == "string" then return value;
+ elseif t == "boolean" then
+ if value == "true" then return true;
+ elseif value == "false" then return false; end
+ elseif t == "number" then return tonumber(value);
+ elseif t == "json" then
+ return json.decode(value);
+ end
+end
+
+local host = module.host;
+local user, store;
+
+local function keyval_store_get()
+ local haveany;
+ local result = {};
+ for row in engine:select("SELECT `key`,`type`,`value` FROM `prosody` WHERE `host`=? AND `user`=? AND `store`=?", host, user, store) do
+ haveany = true;
+ local k = row[1];
+ local v = deserialize(row[2], row[3]);
+ if k and v then
+ if k ~= "" then result[k] = v; elseif type(v) == "table" then
+ for a,b in pairs(v) do
+ result[a] = b;
+ end
+ end
+ end
+ end
+ if haveany then
+ return result;
+ end
+end
+local function keyval_store_set(data)
+ engine:delete("DELETE FROM `prosody` WHERE `host`=? AND `user`=? AND `store`=?", host, user, store);
+
+ if data and next(data) ~= nil then
+ local extradata = {};
+ for key, value in pairs(data) do
+ if type(key) == "string" and key ~= "" then
+ local t, value = serialize(value);
+ assert(t, value);
+ engine:insert("INSERT INTO `prosody` (`host`,`user`,`store`,`key`,`type`,`value`) VALUES (?,?,?,?,?,?)", host, user, store, key, t, value);
+ else
+ extradata[key] = value;
+ end
+ end
+ if next(extradata) ~= nil then
+ local t, extradata = serialize(extradata);
+ assert(t, extradata);
+ engine:insert("INSERT INTO `prosody` (`host`,`user`,`store`,`key`,`type`,`value`) VALUES (?,?,?,?,?,?)", host, user, store, "", t, extradata);
+ end
+ end
+ return true;
+end
+
+local keyval_store = {};
+keyval_store.__index = keyval_store;
+function keyval_store:get(username)
+ user,store = username,self.store;
+ return select(2, engine:transaction(keyval_store_get));
+end
+function keyval_store:set(username, data)
+ user,store = username,self.store;
+ return engine:transaction(function()
+ return keyval_store_set(data);
+ end);
+end
+function keyval_store:users()
+ return engine:transaction(function()
+ return engine:select("SELECT DISTINCT `user` FROM `prosody` WHERE `host`=? AND `store`=?", host, self.store);
+ end);
+end
+
+local driver = {};
+
+function driver:open(store, typ)
+ if not typ then -- default key-value store
+ return setmetatable({ store = store }, keyval_store);
+ end
+ return nil, "unsupported-store";
+end
+
+function driver:stores(username)
+ local sql = "SELECT DISTINCT `store` FROM `prosody` WHERE `host`=? AND `user`" ..
+ (username == true and "!=?" or "=?");
+ if username == true or not username then
+ username = "";
+ end
+ return engine:transaction(function()
+ return engine:select(sql, host, username);
+ end);
+end
+
+function driver:purge(username)
+ return engine:transaction(function()
+ local stmt,err = engine:delete("DELETE FROM `prosody` WHERE `host`=? AND `user`=?", host, username);
+ return true,err;
+ end);
+end
+
+module:provides("storage", driver);
+
+
--- /dev/null
+
+local setmetatable, getmetatable = setmetatable, getmetatable;
+local ipairs, unpack, select = ipairs, unpack, select;
+local tonumber, tostring = tonumber, tostring;
+local assert, xpcall, debug_traceback = assert, xpcall, debug.traceback;
+local t_concat = table.concat;
+local s_char = string.char;
+local log = require "util.logger".init("sql");
+
+local DBI = require "DBI";
+-- This loads all available drivers while globals are unlocked
+-- LuaDBI should be fixed to not set globals.
+DBI.Drivers();
+local build_url = require "socket.url".build;
+
+module("sql")
+
+local column_mt = {};
+local table_mt = {};
+local query_mt = {};
+--local op_mt = {};
+local index_mt = {};
+
+function is_column(x) return getmetatable(x)==column_mt; end
+function is_index(x) return getmetatable(x)==index_mt; end
+function is_table(x) return getmetatable(x)==table_mt; end
+function is_query(x) return getmetatable(x)==query_mt; end
+--function is_op(x) return getmetatable(x)==op_mt; end
+--function expr(...) return setmetatable({...}, op_mt); end
+function Integer(n) return "Integer()" end
+function String(n) return "String()" end
+
+--[[local ops = {
+ __add = function(a, b) return "("..a.."+"..b..")" end;
+ __sub = function(a, b) return "("..a.."-"..b..")" end;
+ __mul = function(a, b) return "("..a.."*"..b..")" end;
+ __div = function(a, b) return "("..a.."/"..b..")" end;
+ __mod = function(a, b) return "("..a.."%"..b..")" end;
+ __pow = function(a, b) return "POW("..a..","..b..")" end;
+ __unm = function(a) return "NOT("..a..")" end;
+ __len = function(a) return "COUNT("..a..")" end;
+ __eq = function(a, b) return "("..a.."=="..b..")" end;
+ __lt = function(a, b) return "("..a.."<"..b..")" end;
+ __le = function(a, b) return "("..a.."<="..b..")" end;
+};
+
+local functions = {
+
+};
+
+local cmap = {
+ [Integer] = Integer();
+ [String] = String();
+};]]
+
+function Column(definition)
+ return setmetatable(definition, column_mt);
+end
+function Table(definition)
+ local c = {}
+ for i,col in ipairs(definition) do
+ if is_column(col) then
+ c[i], c[col.name] = col, col;
+ elseif is_index(col) then
+ col.table = definition.name;
+ end
+ end
+ return setmetatable({ __table__ = definition, c = c, name = definition.name }, table_mt);
+end
+function Index(definition)
+ return setmetatable(definition, index_mt);
+end
+
+function table_mt:__tostring()
+ local s = { 'name="'..self.__table__.name..'"' }
+ for i,col in ipairs(self.__table__) do
+ s[#s+1] = tostring(col);
+ end
+ return 'Table{ '..t_concat(s, ", ")..' }'
+end
+table_mt.__index = {};
+function table_mt.__index:create(engine)
+ return engine:_create_table(self);
+end
+function table_mt:__call(...)
+ -- TODO
+end
+function column_mt:__tostring()
+ return 'Column{ name="'..self.name..'", type="'..self.type..'" }'
+end
+function index_mt:__tostring()
+ local s = 'Index{ name="'..self.name..'"';
+ for i=1,#self do s = s..', "'..self[i]:gsub("[\\\"]", "\\%1")..'"'; end
+ return s..' }';
+-- return 'Index{ name="'..self.name..'", type="'..self.type..'" }'
+end
+--
+
+local function urldecode(s) return s and (s:gsub("%%(%x%x)", function (c) return s_char(tonumber(c,16)); end)); end
+local function parse_url(url)
+ local scheme, secondpart, database = url:match("^([%w%+]+)://([^/]*)/?(.*)");
+ assert(scheme, "Invalid URL format");
+ local username, password, host, port;
+ local authpart, hostpart = secondpart:match("([^@]+)@([^@+])");
+ if not authpart then hostpart = secondpart; end
+ if authpart then
+ username, password = authpart:match("([^:]*):(.*)");
+ username = username or authpart;
+ password = password and urldecode(password);
+ end
+ if hostpart then
+ host, port = hostpart:match("([^:]*):(.*)");
+ host = host or hostpart;
+ port = port and assert(tonumber(port), "Invalid URL format");
+ end
+ return {
+ scheme = scheme:lower();
+ username = username; password = password;
+ host = host; port = port;
+ database = #database > 0 and database or nil;
+ };
+end
+
+--[[local session = {};
+
+function session.query(...)
+ local rets = {...};
+ local query = setmetatable({ __rets = rets, __filters }, query_mt);
+ return query;
+end
+--
+
+local function db2uri(params)
+ return build_url{
+ scheme = params.driver,
+ user = params.username,
+ password = params.password,
+ host = params.host,
+ port = params.port,
+ path = params.database,
+ };
+end]]
+
+local engine = {};
+function engine:connect()
+ if self.conn then return true; end
+
+ local params = self.params;
+ assert(params.driver, "no driver")
+ local dbh, err = DBI.Connect(
+ params.driver, params.database,
+ params.username, params.password,
+ params.host, params.port
+ );
+ if not dbh then return nil, err; end
+ dbh:autocommit(false); -- don't commit automatically
+ self.conn = dbh;
+ self.prepared = {};
+ return true;
+end
+function engine:execute(sql, ...)
+ local success, err = self:connect();
+ if not success then return success, err; end
+ local prepared = self.prepared;
+
+ local stmt = prepared[sql];
+ if not stmt then
+ local err;
+ stmt, err = self.conn:prepare(sql);
+ if not stmt then return stmt, err; end
+ prepared[sql] = stmt;
+ end
+
+ local success, err = stmt:execute(...);
+ if not success then return success, err; end
+ return stmt;
+end
+
+local result_mt = { __index = {
+ affected = function(self) return self.__affected; end;
+ rowcount = function(self) return self.__rowcount; end;
+} };
+
+function engine:execute_query(sql, ...)
+ if self.params.driver == "PostgreSQL" then
+ sql = sql:gsub("`", "\"");
+ end
+ local stmt = assert(self.conn:prepare(sql));
+ assert(stmt:execute(...));
+ return stmt:rows();
+end
+function engine:execute_update(sql, ...)
+ if self.params.driver == "PostgreSQL" then
+ sql = sql:gsub("`", "\"");
+ end
+ local prepared = self.prepared;
+ local stmt = prepared[sql];
+ if not stmt then
+ stmt = assert(self.conn:prepare(sql));
+ prepared[sql] = stmt;
+ end
+ assert(stmt:execute(...));
+ return setmetatable({ __affected = stmt:affected(), __rowcount = stmt:rowcount() }, result_mt);
+end
+engine.insert = engine.execute_update;
+engine.select = engine.execute_query;
+engine.delete = engine.execute_update;
+engine.update = engine.execute_update;
+function engine:_transaction(func, ...)
+ if not self.conn then
+ local a,b = self:connect();
+ if not a then return a,b; end
+ end
+ --assert(not self.__transaction, "Recursive transactions not allowed");
+ local args, n_args = {...}, select("#", ...);
+ local function f() return func(unpack(args, 1, n_args)); end
+ self.__transaction = true;
+ local success, a, b, c = xpcall(f, debug_traceback);
+ self.__transaction = nil;
+ if success then
+ log("debug", "SQL transaction success [%s]", tostring(func));
+ local ok, err = self.conn:commit();
+ if not ok then return ok, err; end -- commit failed
+ return success, a, b, c;
+ else
+ log("debug", "SQL transaction failure [%s]: %s", tostring(func), a);
+ if self.conn then self.conn:rollback(); end
+ return success, a;
+ end
+end
+function engine:transaction(...)
+ local a,b = self:_transaction(...);
+ if not a then
+ local conn = self.conn;
+ if not conn or not conn:ping() then
+ self.conn = nil;
+ a,b = self:_transaction(...);
+ end
+ end
+ return a,b;
+end
+function engine:_create_index(index)
+ local sql = "CREATE INDEX `"..index.name.."` ON `"..index.table.."` (";
+ for i=1,#index do
+ sql = sql.."`"..index[i].."`";
+ if i ~= #index then sql = sql..", "; end
+ end
+ sql = sql..");"
+ if self.params.driver == "PostgreSQL" then
+ sql = sql:gsub("`", "\"");
+ elseif self.params.driver == "MySQL" then
+ sql = sql:gsub("`([,)])", "`(20)%1");
+ end
+ --print(sql);
+ return self:execute(sql);
+end
+function engine:_create_table(table)
+ local sql = "CREATE TABLE `"..table.name.."` (";
+ for i,col in ipairs(table.c) do
+ sql = sql.."`"..col.name.."` "..col.type;
+ if col.nullable == false then sql = sql.." NOT NULL"; end
+ if i ~= #table.c then sql = sql..", "; end
+ end
+ sql = sql.. ");"
+ if self.params.driver == "PostgreSQL" then
+ sql = sql:gsub("`", "\"");
+ end
+ local success,err = self:execute(sql);
+ if not success then return success,err; end
+ for i,v in ipairs(table.__table__) do
+ if is_index(v) then
+ self:_create_index(v);
+ end
+ end
+ return success;
+end
+local engine_mt = { __index = engine };
+
+local function db2uri(params)
+ return build_url{
+ scheme = params.driver,
+ user = params.username,
+ password = params.password,
+ host = params.host,
+ port = params.port,
+ path = params.database,
+ };
+end
+local engine_cache = {}; -- TODO make weak valued
+function create_engine(self, params)
+ local url = db2uri(params);
+ if not engine_cache[url] then
+ local engine = setmetatable({ url = url, params = params }, engine_mt);
+ engine_cache[url] = engine;
+ end
+ return engine_cache[url];
+end
+
+
+--[[Users = Table {
+ name="users";
+ Column { name="user_id", type=String(), primary_key=true };
+};
+print(Users)
+print(Users.c.user_id)]]
+
+--local engine = create_engine('postgresql://scott:tiger@localhost:5432/mydatabase');
+--[[local engine = create_engine{ driver = "SQLite3", database = "./alchemy.sqlite" };
+
+local i = 0;
+for row in assert(engine:execute("select * from sqlite_master")):rows(true) do
+ i = i+1;
+ print(i);
+ for k,v in pairs(row) do
+ print("",k,v);
+ end
+end
+print("---")
+
+Prosody = Table {
+ name="prosody";
+ Column { name="host", type="TEXT", nullable=false };
+ Column { name="user", type="TEXT", nullable=false };
+ Column { name="store", type="TEXT", nullable=false };
+ Column { name="key", type="TEXT", nullable=false };
+ Column { name="type", type="TEXT", nullable=false };
+ Column { name="value", type="TEXT", nullable=false };
+ Index { name="prosody_index", "host", "user", "store", "key" };
+};
+--print(Prosody);
+assert(engine:transaction(function()
+ assert(Prosody:create(engine));
+end));
+
+for row in assert(engine:execute("select user from prosody")):rows(true) do
+ print("username:", row['username'])
+end
+--result.close();]]
+
+return _M;
projects / prosody.git / commitdiff