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--
-- rhnop
--
-- Copyright (C) 2011-2015 Christian Pointner <equinox@helsinki.at>
--
-- This file is part of rhnop.
--
-- rhnop is free software: you can redistribute it and/or modify
-- it under the terms of the GNU General Public License as published by
-- the Free Software Foundation, either version 3 of the License, or
-- any later version.
--
-- rhnop is distributed in the hope that it will be useful,
-- but WITHOUT ANY WARRANTY; without even the implied warranty of
-- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
-- GNU General Public License for more details.
--
-- You should have received a copy of the GNU General Public License
-- along with rhnop. If not, see <http://www.gnu.org/licenses/>.
--
luasql = require "luasql.mysql"
-- for destination database
-- CREATE DATABASE nop CHARACTER SET utf8 COLLATE utf8_unicode_ci;
-- GRANT select,insert,update,delete ON nop.master TO 'nopsyncd'@'localhost' IDENTIFIED BY '<password>';
-- GRANT select,insert,update,delete ON nop.standby TO 'nopsyncd'@'localhost';
-- GRANT select,insert,update ON nop.state TO 'nopsysstated'@'localhost' IDENTIFIED BY '<password>';
-- GRANT select ON nop.* TO 'nop'@'localhost' IDENTIFIED BY '<password>';
-- USE nop
-- CREATE TABLE IF NOT EXISTS master (timestamp BIGINT UNSIGNED PRIMARY KEY NOT NULL, cart INT NOT NULL, len INT, showtitle VARCHAR(255), title VARCHAR(255), artist VARCHAR(255), album VARCHAR(255), ismusic BOOLEAN);
-- ALTER TABLE master CONVERT TO CHARACTER SET utf8 COLLATE utf8_unicode_ci;
-- CREATE TABLE IF NOT EXISTS standby (timestamp BIGINT UNSIGNED PRIMARY KEY NOT NULL, cart INT NOT NULL, len INT, showtitle VARCHAR(255), title VARCHAR(255), artist VARCHAR(255), album VARCHAR(255), ismusic BOOLEAN);
-- ALTER TABLE standby CONVERT TO CHARACTER SET utf8 COLLATE utf8_unicode_ci;
-- CREATE TABLE IF NOT EXISTS state (timestamp BIGINT UNSIGNED PRIMARY KEY NOT NULL, state VARCHAR(32));
-- ALTER TABLE state CONVERT TO CHARACTER SET utf8 COLLATE utf8_unicode_ci;
local db = {}
function db.init(db, user, pwd, host, port, table)
local mydb = {}
mydb.table = table
local err
mydb.env, err = luasql.mysql()
if mydb.env == nil then
return nil, err
end
mydb.con, err = mydb.env:connect(db, user, pwd, host, port)
if mydb.con == nil then
return nil, err
end
local ret, err = mydb.con:execute("SET CHARACTER SET utf8")
if ret == nil then
return nil, err
end
ret, err = mydb.con:setautocommit(true)
if ret == nil then
return nil, err
end
function mydb:getLastEntry()
local cur, err = self.con:execute("SELECT MAX(timestamp) FROM " .. self.table)
if cur == nil then
return nil, err
end
local timestamp = cur:fetch()
if timestamp == nil then timestamp = 0 end
return timestamp
end
function mydb:findMissingEntries(lasttimestamp)
local lastts = self.con:escape(lasttimestamp)
return self.con:execute("SELECT * FROM " .. self.table .. " WHERE timestamp > " .. lastts)
end
function mydb:getNextMissingEntry(cur)
local data = {}
data = cur:fetch(data, "a")
if data == nil then
return nil, "that's all folks"
end
return data
end
function mydb:getEntry(timestamp)
local ts = self.con:escape(timestamp)
local cur, err = self.con:execute("SELECT * FROM " .. self.table .. " WHERE timestamp = " .. ts)
if cur == nil then
return nil, err
end
local data = {}
data = cur:fetch(data, "a")
if data == nil then
return nil, "nothing found"
end
return data
end
function mydb:addEntry(data)
local timestamp = self.con:escape(data.timestamp)
local cart = self.con:escape(data.cart)
local len = self.con:escape(data.len)
local showtitle = self.con:escape(data.showtitle)
local title = self.con:escape(data.title)
local artist = self.con:escape(data.artist)
local album = self.con:escape(data.album)
local ismusic = self.con:escape(data.ismusic)
local cur, err = self.con:execute("REPLACE INTO " .. self.table .. " VALUES('" .. timestamp .. "', '" .. cart .. "', '" .. len .. "', '" .. showtitle .. "', '" .. title .. "', '" .. artist .."', '" .. album .. "', '" .. ismusic .. "')")
if cur == nil then
return nil, err
end
return true
end
function mydb:getLastSysState()
local cur, err = self.con:execute("SELECT state FROM " .. self.table .. " WHERE timestamp = (SELECT MAX(timestamp) FROM " .. self.table .. ")")
if cur == nil then
return nil, err
end
local state = cur:fetch()
if state == nil then state = "unknown" end
return state
end
function mydb:updateSysState(timestamp, state)
local t = self.con:escape(timestamp)
local s = self.con:escape(state)
local cur, err = self.con:execute("INSERT INTO " .. self.table .. " VALUES('" .. t .. "', '" .. s .. "')")
if cur == nil then
return nil, err
end
return true
end
function mydb:close()
if self.con then
self.con:close()
end
if self.env then
self.env:close()
end
end
return mydb
end
return db
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