mirror of https://github.com/bjc/prosody
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370 lines
12 KiB
370 lines
12 KiB
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local json = require "util.json";
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local xml_parse = require "util.xml".parse;
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local uuid = require "util.uuid";
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local resolve_relative_path = require "core.configmanager".resolve_relative_path;
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local stanza_mt = require"util.stanza".stanza_mt;
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local getmetatable = getmetatable;
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local t_concat = table.concat;
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local function is_stanza(x) return getmetatable(x) == stanza_mt; end
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local noop = function() end
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local unpack = unpack
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local function iterator(result)
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return function(result)
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local row = result();
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if row ~= nil then
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return unpack(row);
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end
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end, result, nil;
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end
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local mod_sql = module:require("sql");
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local params = module:get_option("sql");
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local engine; -- TODO create engine
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local function create_table()
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local Table,Column,Index = mod_sql.Table,mod_sql.Column,mod_sql.Index;
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--[[
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local ProsodyTable = Table {
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name="prosody";
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Column { name="host", type="TEXT", nullable=false };
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Column { name="user", type="TEXT", nullable=false };
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Column { name="store", type="TEXT", nullable=false };
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Column { name="key", type="TEXT", nullable=false };
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Column { name="type", type="TEXT", nullable=false };
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Column { name="value", type="TEXT", nullable=false };
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Index { name="prosody_index", "host", "user", "store", "key" };
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};
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engine:transaction(function()
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ProsodyTable:create(engine);
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end);]]
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if not module:get_option("sql_manage_tables", true) then
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return;
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end
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local create_sql = "CREATE TABLE `prosody` (`host` TEXT, `user` TEXT, `store` TEXT, `key` TEXT, `type` TEXT, `value` TEXT);";
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if params.driver == "PostgreSQL" then
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create_sql = create_sql:gsub("`", "\"");
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elseif params.driver == "MySQL" then
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create_sql = create_sql:gsub("`value` TEXT", "`value` MEDIUMTEXT")
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:gsub(";$", " CHARACTER SET 'utf8' COLLATE 'utf8_bin';");
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end
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local index_sql = "CREATE INDEX `prosody_index` ON `prosody` (`host`, `user`, `store`, `key`)";
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if params.driver == "PostgreSQL" then
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index_sql = index_sql:gsub("`", "\"");
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elseif params.driver == "MySQL" then
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index_sql = index_sql:gsub("`([,)])", "`(20)%1");
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end
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local success,err = engine:transaction(function()
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engine:execute(create_sql);
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engine:execute(index_sql);
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end);
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if not success then -- so we failed to create
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if params.driver == "MySQL" then
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success,err = engine:transaction(function()
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local result = engine:execute("SHOW COLUMNS FROM prosody WHERE Field='value' and Type='text'");
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if result:rowcount() > 0 then
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module:log("info", "Upgrading database schema...");
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engine:execute("ALTER TABLE prosody MODIFY COLUMN `value` MEDIUMTEXT");
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module:log("info", "Database table automatically upgraded");
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end
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return true;
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end);
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if not success then
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module:log("error", "Failed to check/upgrade database schema (%s), please see "
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.."http://prosody.im/doc/mysql for help",
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err or "unknown error");
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end
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end
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end
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local ProsodyArchiveTable = Table {
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name="prosodyarchive";
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Column { name="sort_id", type="INTEGER PRIMARY KEY AUTOINCREMENT", nullable=false };
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Column { name="host", type="TEXT", nullable=false };
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Column { name="user", type="TEXT", nullable=false };
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Column { name="store", type="TEXT", nullable=false };
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Column { name="key", type="TEXT", nullable=false }; -- item id
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Column { name="when", type="INTEGER", nullable=false }; -- timestamp
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Column { name="with", type="TEXT", nullable=false }; -- related id
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Column { name="type", type="TEXT", nullable=false };
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Column { name="value", type=params.driver == "MySQL" and "MEDIUMTEXT" or "TEXT", nullable=false };
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Index { name="prosodyarchive_index", "host", "user", "store", "key" };
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};
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engine:transaction(function()
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ProsodyArchiveTable:create(engine);
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end);
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end
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local function set_encoding()
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if params.driver == "SQLite3" then return end
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local set_names_query = "SET NAMES 'utf8';";
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if params.driver == "MySQL" then
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set_names_query = set_names_query:gsub(";$", " COLLATE 'utf8_bin';");
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end
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local success,err = engine:transaction(function() return engine:execute(set_names_query); end);
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if not success then
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module:log("error", "Failed to set database connection encoding to UTF8: %s", err);
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return;
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end
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if params.driver == "MySQL" then
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-- COMPAT w/pre-0.9: Upgrade tables to UTF-8 if not already
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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' );";
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local success,err = engine:transaction(function()
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local result = engine:execute(check_encoding_query);
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local n_bad_columns = result:rowcount();
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if n_bad_columns > 0 then
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module:log("warn", "Found %d columns in prosody table requiring encoding change, updating now...", n_bad_columns);
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local fix_column_query1 = "ALTER TABLE `prosody` CHANGE `%s` `%s` BLOB;";
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local fix_column_query2 = "ALTER TABLE `prosody` CHANGE `%s` `%s` %s CHARACTER SET 'utf8' COLLATE 'utf8_bin';";
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for row in result:rows() do
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local column_name, column_type = unpack(row);
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engine:execute(fix_column_query1:format(column_name, column_name));
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engine:execute(fix_column_query2:format(column_name, column_name, column_type));
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end
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module:log("info", "Database encoding upgrade complete!");
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end
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end);
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local success,err = engine:transaction(function() return engine:execute(check_encoding_query); end);
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if not success then
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module:log("error", "Failed to check/upgrade database encoding: %s", err or "unknown error");
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end
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end
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end
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do -- process options to get a db connection
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params = params or { driver = "SQLite3" };
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if params.driver == "SQLite3" then
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params.database = resolve_relative_path(prosody.paths.data or ".", params.database or "prosody.sqlite");
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end
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assert(params.driver and params.database, "Both the SQL driver and the database need to be specified");
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--local dburi = db2uri(params);
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engine = mod_sql:create_engine(params);
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-- Encoding mess
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set_encoding();
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-- Automatically create table, ignore failure (table probably already exists)
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create_table();
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end
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local function serialize(value)
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local t = type(value);
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if t == "string" or t == "boolean" or t == "number" then
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return t, tostring(value);
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elseif is_stanza(value) then
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return "xml", tostring(value);
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elseif t == "table" then
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local value,err = json.encode(value);
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if value then return "json", value; end
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return nil, err;
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end
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return nil, "Unhandled value type: "..t;
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end
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local function deserialize(t, value)
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if t == "string" then return value;
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elseif t == "boolean" then
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if value == "true" then return true;
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elseif value == "false" then return false; end
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elseif t == "number" then return tonumber(value);
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elseif t == "json" then
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return json.decode(value);
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elseif t == "xml" then
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return xml_parse(value);
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end
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end
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local host = module.host;
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local user, store;
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local function keyval_store_get()
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local haveany;
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local result = {};
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for row in engine:select("SELECT `key`,`type`,`value` FROM `prosody` WHERE `host`=? AND `user`=? AND `store`=?", host, user or "", store) do
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haveany = true;
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local k = row[1];
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local v = deserialize(row[2], row[3]);
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if k and v then
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if k ~= "" then result[k] = v; elseif type(v) == "table" then
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for a,b in pairs(v) do
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result[a] = b;
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end
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end
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end
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end
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if haveany then
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return result;
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end
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end
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local function keyval_store_set(data)
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engine:delete("DELETE FROM `prosody` WHERE `host`=? AND `user`=? AND `store`=?", host, user or "", store);
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if data and next(data) ~= nil then
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local extradata = {};
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for key, value in pairs(data) do
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if type(key) == "string" and key ~= "" then
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local t, value = serialize(value);
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assert(t, value);
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engine:insert("INSERT INTO `prosody` (`host`,`user`,`store`,`key`,`type`,`value`) VALUES (?,?,?,?,?,?)", host, user or "", store, key, t, value);
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else
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extradata[key] = value;
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end
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end
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if next(extradata) ~= nil then
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local t, extradata = serialize(extradata);
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assert(t, extradata);
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engine:insert("INSERT INTO `prosody` (`host`,`user`,`store`,`key`,`type`,`value`) VALUES (?,?,?,?,?,?)", host, user or "", store, "", t, extradata);
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end
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end
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return true;
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end
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local keyval_store = {};
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keyval_store.__index = keyval_store;
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function keyval_store:get(username)
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user,store = username,self.store;
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return select(2, engine:transaction(keyval_store_get));
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end
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function keyval_store:set(username, data)
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user,store = username,self.store;
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return engine:transaction(function()
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return keyval_store_set(data);
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end);
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end
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function keyval_store:users()
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local ok, result = engine:transaction(function()
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return engine:select("SELECT DISTINCT `user` FROM `prosody` WHERE `host`=? AND `store`=?", host, self.store);
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end);
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if not ok then return ok, result end
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return iterator(result);
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end
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local archive_store = {}
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archive_store.__index = archive_store
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function archive_store:append(username, when, with, value)
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local user,store = username,self.store;
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return engine:transaction(function()
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local key = uuid.generate();
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local t, value = serialize(value);
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engine:insert("INSERT INTO `prosodyarchive` (`host`, `user`, `store`, `when`, `with`, `key`, `type`, `value`) VALUES (?,?,?,?,?,?,?,?)", host, user or "", store, when, with, key, t, value);
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return key;
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end);
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end
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function archive_store:find(username, query)
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query = query or {};
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local user,store = username,self.store;
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local total;
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local ok, result = engine:transaction(function()
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local sql_query = "SELECT `key`, `type`, `value`, `when` FROM `prosodyarchive` WHERE %s ORDER BY `sort_id` %s%s;";
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local args = { host, user or "", store, };
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local where = { "`host` = ?", "`user` = ?", "`store` = ?", };
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-- Time range, inclusive
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if query.start then
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args[#args+1] = query.start
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where[#where+1] = "`when` >= ?"
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end
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if query["end"] then
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args[#args+1] = query["end"];
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if query.start then
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where[#where] = "`when` BETWEEN ? AND ?" -- is this inclusive?
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else
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where[#where+1] = "`when` >= ?"
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end
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end
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-- Related name
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if query.with then
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where[#where+1] = "`with` = ?";
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args[#args+1] = query.with
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end
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-- Unique id
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if query.key then
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where[#where+1] = "`key` = ?";
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args[#args+1] = query.key
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end
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-- Total matching
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if query.total then
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local stats = engine:select(sql_query:gsub("^(SELECT).-(FROM)", "%1 COUNT(*) %2"):format(t_concat(where, " AND "), "DESC", ""), unpack(args));
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if stats then
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local _total = stats()
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total = _total and _total[1];
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end
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if query.limit == 0 then -- Skip the real query
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return noop, total;
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end
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end
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-- Before or after specific item, exclusive
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if query.after then
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where[#where+1] = "`sort_id` > (SELECT `sort_id` FROM `prosodyarchive` WHERE `key` = ? LIMIT 1)"
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args[#args+1] = query.after
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end
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if query.before then
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where[#where+1] = "`sort_id` < (SELECT `sort_id` FROM `prosodyarchive` WHERE `key` = ? LIMIT 1)"
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args[#args+1] = query.before
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end
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if query.limit then
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args[#args+1] = query.limit;
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end
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sql_query = sql_query:format(t_concat(where, " AND "), query.reverse and "DESC" or "ASC", query.limit and " LIMIT ?" or "");
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module:log("debug", sql_query);
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return engine:select(sql_query, unpack(args));
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end);
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if not ok then return ok, result end
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return function()
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local row = result();
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if row ~= nil then
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return row[1], deserialize(row[2], row[3]), row[4];
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end
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end, total;
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end
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local stores = {
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keyval = keyval_store;
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archive = archive_store;
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};
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local driver = {};
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function driver:open(store, typ)
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local store_mt = stores[typ or "keyval"];
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if store_mt then
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return setmetatable({ store = store }, store_mt);
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end
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return nil, "unsupported-store";
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end
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function driver:stores(username)
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local sql = "SELECT DISTINCT `store` FROM `prosody` WHERE `host`=? AND `user`" ..
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(username == true and "!=?" or "=?");
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if username == true or not username then
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username = "";
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end
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local ok, result = engine:transaction(function()
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return engine:select(sql, host, username);
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end);
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if not ok then return ok, result end
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return iterator(result);
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end
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function driver:purge(username)
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return engine:transaction(function()
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local stmt,err = engine:delete("DELETE FROM `prosody` WHERE `host`=? AND `user`=?", host, username);
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return true,err;
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end);
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end
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module:provides("storage", driver);
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