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plugins/mod_storage_sql2.lua @ 5604:6df0ec991f2e
tests: Some much-needed cleanup...
author | Matthew Wild <mwild1@gmail.com> |
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date | Sat, 18 May 2013 17:14:30 +0100 |
parent | 5494:9916f0a2d178 |
child | 5711:254a9420e53d |
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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);