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-rw-r--r--plugins/mod_storage_sql2.lua476
1 files changed, 476 insertions, 0 deletions
diff --git a/plugins/mod_storage_sql2.lua b/plugins/mod_storage_sql2.lua
new file mode 100644
index 00000000..adf9f9b6
--- /dev/null
+++ b/plugins/mod_storage_sql2.lua
@@ -0,0 +1,476 @@
+
+local json = require "util.json";
+local sql = require "util.sql";
+local xml_parse = require "util.xml".parse;
+local uuid = require "util.uuid";
+local resolve_relative_path = require "util.paths".resolve_relative_path;
+
+local stanza_mt = require"util.stanza".stanza_mt;
+local getmetatable = getmetatable;
+local t_concat = table.concat;
+local function is_stanza(x) return getmetatable(x) == stanza_mt; end
+
+local noop = function() end
+local unpack = unpack
+local function iterator(result)
+ return function(result_)
+ local row = result_();
+ if row ~= nil then
+ return unpack(row);
+ end
+ end, result, nil;
+end
+
+local default_params = { driver = "SQLite3" };
+
+local engine;
+
+local function serialize(value)
+ local t = type(value);
+ if t == "string" or t == "boolean" or t == "number" then
+ return t, tostring(value);
+ elseif is_stanza(value) then
+ return "xml", 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);
+ elseif t == "xml" then
+ return xml_parse(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 or "", 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 or "", 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 or "", 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 or "", store, "", t, extradata);
+ end
+ end
+ return true;
+end
+
+--- Key/value store API (default store type)
+
+local keyval_store = {};
+keyval_store.__index = keyval_store;
+function keyval_store:get(username)
+ user, store = username, self.store;
+ local ok, result = engine:transaction(keyval_store_get);
+ if not ok then
+ module:log("error", "Unable to read from database %s store for %s: %s", store, username or "<host>", result);
+ return nil, result;
+ end
+ return result;
+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()
+ local ok, result = engine:transaction(function()
+ return engine:select("SELECT DISTINCT `user` FROM `prosody` WHERE `host`=? AND `store`=?", host, self.store);
+ end);
+ if not ok then return ok, result end
+ return iterator(result);
+end
+
+--- Archive store API
+
+local map_store = {};
+map_store.__index = map_store;
+function map_store:get(username, key)
+ local ok, result = engine:transaction(function()
+ if type(key) == "string" and key ~= "" then
+ for row in engine:select("SELECT `type`, `value` FROM `prosody` WHERE `host`=? AND `user`=? AND `store`=? AND `key`=?", host, username or "", self.store, key) do
+ return deserialize(row[1], row[2]);
+ end
+ else
+ error("TODO: non-string keys");
+ end
+ end);
+ if not ok then return nil, result; end
+ return result;
+end
+function map_store:set(username, key, data)
+ local ok, result = engine:transaction(function()
+ if type(key) == "string" and key ~= "" then
+ engine:delete("DELETE FROM `prosody` WHERE `host`=? AND `user`=? AND `store`=? AND `key`=?",
+ host, username or "", self.store, key);
+ if data ~= nil then
+ local t, value = assert(serialize(data));
+ engine:insert("INSERT INTO `prosody` (`host`,`user`,`store`,`key`,`type`,`value`) VALUES (?,?,?,?,?,?)", host, username or "", self.store, key, t, value);
+ end
+ else
+ error("TODO: non-string keys");
+ end
+ return true;
+ end);
+ if not ok then return nil, result; end
+ return result;
+end
+
+local archive_store = {}
+archive_store.caps = {
+ total = true;
+};
+archive_store.__index = archive_store
+function archive_store:append(username, key, value, when, with)
+ if type(when) ~= "number" then
+ when, with, value = value, when, with;
+ end
+ local user,store = username,self.store;
+ return engine:transaction(function()
+ if key then
+ engine:delete("DELETE FROM `prosodyarchive` WHERE `host`=? AND `user`=? AND `store`=? AND `key`=?", host, user or "", store, key);
+ else
+ key = uuid.generate();
+ end
+ local t, value = serialize(value);
+ engine:insert("INSERT INTO `prosodyarchive` (`host`, `user`, `store`, `when`, `with`, `key`, `type`, `value`) VALUES (?,?,?,?,?,?,?,?)", host, user or "", store, when, with, key, t, value);
+ return key;
+ end);
+end
+
+-- Helpers for building the WHERE clause
+local function archive_where(query, args, where)
+ -- Time range, inclusive
+ if query.start then
+ args[#args+1] = query.start
+ where[#where+1] = "`when` >= ?"
+ end
+
+ if query["end"] then
+ args[#args+1] = query["end"];
+ if query.start then
+ where[#where] = "`when` BETWEEN ? AND ?" -- is this inclusive?
+ else
+ where[#where+1] = "`when` <= ?"
+ end
+ end
+
+ -- Related name
+ if query.with then
+ where[#where+1] = "`with` = ?";
+ args[#args+1] = query.with
+ end
+
+ -- Unique id
+ if query.key then
+ where[#where+1] = "`key` = ?";
+ args[#args+1] = query.key
+ end
+end
+local function archive_where_id_range(query, args, where)
+ local args_len = #args
+ -- Before or after specific item, exclusive
+ if query.after then -- keys better be unique!
+ where[#where+1] = "`sort_id` > (SELECT `sort_id` FROM `prosodyarchive` WHERE `key` = ? AND `host` = ? AND `user` = ? AND `store` = ? LIMIT 1)"
+ args[args_len+1], args[args_len+2], args[args_len+3], args[args_len+4] = query.after, args[1], args[2], args[3];
+ args_len = args_len + 4
+ end
+ if query.before then
+ where[#where+1] = "`sort_id` < (SELECT `sort_id` FROM `prosodyarchive` WHERE `key` = ? AND `host` = ? AND `user` = ? AND `store` = ? LIMIT 1)"
+ args[args_len+1], args[args_len+2], args[args_len+3], args[args_len+4] = query.before, args[1], args[2], args[3];
+ end
+end
+
+function archive_store:find(username, query)
+ query = query or {};
+ local user,store = username,self.store;
+ local total;
+ local ok, result = engine:transaction(function()
+ local sql_query = "SELECT `key`, `type`, `value`, `when`, `with` FROM `prosodyarchive` WHERE %s ORDER BY `sort_id` %s%s;";
+ local args = { host, user or "", store, };
+ local where = { "`host` = ?", "`user` = ?", "`store` = ?", };
+
+ archive_where(query, args, where);
+
+ -- Total matching
+ if query.total then
+ local stats = engine:select("SELECT COUNT(*) FROM `prosodyarchive` WHERE " .. t_concat(where, " AND "), unpack(args));
+ if stats then
+ local _total = stats()
+ total = _total and _total[1];
+ end
+ if query.limit == 0 then -- Skip the real query
+ return noop, total;
+ end
+ end
+
+ archive_where_id_range(query, args, where);
+
+ if query.limit then
+ args[#args+1] = query.limit;
+ end
+
+ sql_query = sql_query:format(t_concat(where, " AND "), query.reverse and "DESC" or "ASC", query.limit and " LIMIT ?" or "");
+ module:log("debug", sql_query);
+ return engine:select(sql_query, unpack(args));
+ end);
+ if not ok then return ok, result end
+ return function()
+ local row = result();
+ if row ~= nil then
+ return row[1], deserialize(row[2], row[3]), row[4], row[5];
+ end
+ end, total;
+end
+
+function archive_store:delete(username, query)
+ query = query or {};
+ local user,store = username,self.store;
+ return engine:transaction(function()
+ local sql_query = "DELETE FROM `prosodyarchive` WHERE %s;";
+ local args = { host, user or "", store, };
+ local where = { "`host` = ?", "`user` = ?", "`store` = ?", };
+ if user == true then
+ table.remove(args, 2);
+ table.remove(where, 2);
+ end
+ archive_where(query, args, where);
+ archive_where_id_range(query, args, where);
+ sql_query = sql_query:format(t_concat(where, " AND "));
+ module:log("debug", sql_query);
+ return engine:delete(sql_query, unpack(args));
+ end);
+end
+
+local stores = {
+ keyval = keyval_store;
+ map = map_store;
+ archive = archive_store;
+};
+
+--- Implement storage driver API
+
+-- FIXME: Some of these operations need to operate on the archive store(s) too
+
+local driver = {};
+
+function driver:open(store, typ)
+ local store_mt = stores[typ or "keyval"];
+ if store_mt then
+ return setmetatable({ store = store }, store_mt);
+ end
+ return nil, "unsupported-store";
+end
+
+function driver:stores(username)
+ local query = "SELECT DISTINCT `store` FROM `prosody` WHERE `host`=? AND `user`" ..
+ (username == true and "!=?" or "=?");
+ if username == true or not username then
+ username = "";
+ end
+ local ok, result = engine:transaction(function()
+ return engine:select(query, host, username);
+ end);
+ if not ok then return ok, result end
+ return iterator(result);
+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
+
+--- Initialization
+
+
+local function create_table(name)
+ local Table, Column, Index = sql.Table, sql.Column, sql.Index;
+
+ local ProsodyTable = Table {
+ name= name or "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="MEDIUMTEXT", nullable=false };
+ Index { name="prosody_index", "host", "user", "store", "key" };
+ };
+ engine:transaction(function()
+ ProsodyTable:create(engine);
+ end);
+
+ local ProsodyArchiveTable = Table {
+ name="prosodyarchive";
+ Column { name="sort_id", type="INTEGER", primary_key=true, auto_increment=true };
+ 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 }; -- item id
+ Column { name="when", type="INTEGER", nullable=false }; -- timestamp
+ Column { name="with", type="TEXT", nullable=false }; -- related id
+ Column { name="type", type="TEXT", nullable=false };
+ Column { name="value", type="MEDIUMTEXT", nullable=false };
+ Index { name="prosodyarchive_index", unique = true, "host", "user", "store", "key" };
+ };
+ engine:transaction(function()
+ ProsodyArchiveTable:create(engine);
+ end);
+end
+
+local function upgrade_table(params, apply_changes)
+ local changes = false;
+ if params.driver == "MySQL" then
+ local success,err = engine:transaction(function()
+ local result = engine:execute("SHOW COLUMNS FROM prosody WHERE Field='value' and Type='text'");
+ if result:rowcount() > 0 then
+ changes = true;
+ if apply_changes then
+ module:log("info", "Upgrading database schema...");
+ engine:execute("ALTER TABLE prosody MODIFY COLUMN `value` MEDIUMTEXT");
+ module:log("info", "Database table automatically upgraded");
+ end
+ 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");
+ return false;
+ end
+
+ -- COMPAT w/pre-0.10: Upgrade table to UTF-8 if not already
+ local check_encoding_query = "SELECT `COLUMN_NAME`,`COLUMN_TYPE`,`TABLE_NAME` FROM `information_schema`.`columns` WHERE `TABLE_NAME` LIKE 'prosody%%' AND ( `CHARACTER_SET_NAME`!='%s' OR `COLLATION_NAME`!='%s_bin' );";
+ check_encoding_query = check_encoding_query:format(engine.charset, engine.charset);
+ success,err = engine:transaction(function()
+ local result = engine:execute(check_encoding_query);
+ local n_bad_columns = result:rowcount();
+ if n_bad_columns > 0 then
+ changes = true;
+ if apply_changes then
+ module:log("warn", "Found %d columns in prosody table requiring encoding change, updating now...", n_bad_columns);
+ local fix_column_query1 = "ALTER TABLE `%s` CHANGE `%s` `%s` BLOB;";
+ local fix_column_query2 = "ALTER TABLE `%s` CHANGE `%s` `%s` %s CHARACTER SET '%s' COLLATE '%s_bin';";
+ for row in result:rows() do
+ local column_name, column_type, table_name = unpack(row);
+ module:log("debug", "Fixing column %s in table %s", column_name, table_name);
+ engine:execute(fix_column_query1:format(table_name, column_name, column_name));
+ engine:execute(fix_column_query2:format(table_name, column_name, column_name, column_type, engine.charset, engine.charset));
+ end
+ module:log("info", "Database encoding upgrade complete!");
+ end
+ end
+ end);
+ 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");
+ return false;
+ end
+ end
+ return changes;
+end
+
+local function normalize_params(params)
+ 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, "Configuration error: Both the SQL driver and the database need to be specified");
+ return params;
+end
+
+function module.load()
+ if prosody.prosodyctl then return; end
+ local params = normalize_params(module:get_option("sql", default_params));
+ engine = sql:create_engine(params, function (engine)
+ if module:get_option("sql_manage_tables", true) then
+ -- Automatically create table, ignore failure (table probably already exists)
+ -- FIXME: we should check in information_schema, etc.
+ create_table();
+ -- Check whether the table needs upgrading
+ if upgrade_table(params, false) then
+ module:log("error", "Old database format detected. Please run: prosodyctl mod_%s upgrade", module.name);
+ return false, "database upgrade needed";
+ end
+ end
+ end);
+
+ module:provides("storage", driver);
+end
+
+function module.command(arg)
+ local config = require "core.configmanager";
+ local prosodyctl = require "util.prosodyctl";
+ local command = table.remove(arg, 1);
+ if command == "upgrade" then
+ -- We need to find every unique dburi in the config
+ local uris = {};
+ for host in pairs(prosody.hosts) do
+ local params = config.get(host, "sql") or default_params;
+ uris[sql.db2uri(params)] = params;
+ end
+ print("We will check and upgrade the following databases:\n");
+ for _, params in pairs(uris) do
+ print("", "["..params.driver.."] "..params.database..(params.host and " on "..params.host or ""));
+ end
+ print("");
+ print("Ensure you have working backups of the above databases before continuing! ");
+ if not prosodyctl.show_yesno("Continue with the database upgrade? [yN]") then
+ print("Ok, no upgrade. But you do have backups, don't you? ...don't you?? :-)");
+ return;
+ end
+ -- Upgrade each one
+ for _, params in pairs(uris) do
+ print("Checking "..params.database.."...");
+ engine = sql:create_engine(params);
+ upgrade_table(params, true);
+ end
+ print("All done!");
+ else
+ print("Unknown command: "..command);
+ end
+end