storage backend prepared for sqlite
This commit is contained in:
Joachim Stolberg
parent
daa84ed931
commit
bb6f85c9c7
@ -53,6 +53,12 @@ local function chat(player, text)
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minetest.chat_send_player(player:get_player_name(), "[Techage] "..text)
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end
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local function postload_area(pos)
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if not minetest.forceload_block(pos, true) then
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minetest.after(60, postload_area, pos)
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end
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end
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local function add_pos(pos, player)
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local lPos = minetest.deserialize(player:get_attribute("techage_forceload_blocks")) or {}
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if not in_list(lPos, pos) and (#lPos < techage.max_num_forceload_blocks or
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@ -259,7 +265,9 @@ minetest.register_on_joinplayer(function(player)
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for _,pos in ipairs(get_pos_list(player)) do
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local node = techage.get_node_lvm(pos)
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if node.name == "techage:forceload" or node.name == "techage:forceloadtile" then
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minetest.forceload_block(pos, true)
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if not minetest.forceload_block(pos, true) then
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minetest.after(60, postload_area, pos)
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end
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lPos[#lPos+1] = pos
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end
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end
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107
basis/backend_sqlite.lua
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107
basis/backend_sqlite.lua
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@ -0,0 +1,107 @@
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--[[
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TechAge
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=======
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Copyright (C) 2020 Joachim Stolberg
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GPL v3
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See LICENSE.txt for more information
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Node number management/storage based on SQLite
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]]--
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local MN = minetest.get_current_modname()
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local WP = minetest.get_worldpath()
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local IE = minetest.request_insecure_environment()
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if not IE then
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error("Please add 'secure.trusted_mods = techage' to minetest.conf!")
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end
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local sqlite3 = IE.require("lsqlite3")
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local marshal = IE.require("marshal")
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if not sqlite3 then
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error("Please install sqlite3 via 'luarocks install lsqlite3'")
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end
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if not marshal then
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error("Please install marshal via 'luarocks install lua-marshal'")
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end
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local db = sqlite3.open(WP.."/techage_numbers.sqlite3")
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-- Prevent use of this db instance.
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if sqlite3 then sqlite3 = nil end
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db:exec[[
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CREATE TABLE test2(id INTEGER PRIMARY KEY, number INTEGER, x INTEGER, y INTEGER, z INTEGER);
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CREATE INDEX idx ON test2(number);
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]]
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local insert = db:prepare("INSERT INTO test2 VALUES(NULL, ?, ?, ?, ?);")
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local query = db:prepare("SELECT * FROM test2 WHERE number=?")
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local backend = {}
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local storage = minetest.get_mod_storage()
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local function set(number, pos)
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insert:reset()
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insert:bind(1, number)
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insert:bind(2, pos.x)
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insert:bind(3, pos.y)
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insert:bind(4, pos.z)
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insert:step()
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end
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local function get(number)
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query:reset()
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query:bind(1, number)
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query:step()
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local _, _, x, y, z, name = unpack(query:get_values())
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return {pos = {x = x, y = y, z = z}, name = name}
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end
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-------------------------------------------------------------------
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-- API functions
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-------------------------------------------------------------------
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function backend.get_nodepos(number)
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return minetest.string_to_pos(storage:get_string(number))
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end
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function backend.set_nodepos(number, pos)
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storage:get_string(number, minetest.pos_to_string(pos))
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end
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function backend.add_nodepos(pos)
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local num = tostring(NextNumber)
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NextNumber = NextNumber + 1
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storage:set_int("NextNumber", NextNumber)
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storage:get_string(num, minetest.pos_to_string(pos))
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return num
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end
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function backend.del_nodepos(number)
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storage:get_string(number, "")
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end
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-- delete invalid entries
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function backend.delete_invalid_entries(node_def)
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minetest.log("info", "[TechAge] Data maintenance started")
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for i = 1, NextNumber do
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local number = tostring(i)
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if storage:contains(number) then
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local pos = backend.get_nodepos(number)
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local name = techage.get_node_lvm(pos).name
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if not node_def[name] then
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backend.del_nodepos(number)
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end
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end
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end
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minetest.log("info", "[TechAge] Data maintenance finished")
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end
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return backend
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96
basis/backend_storage.lua
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96
basis/backend_storage.lua
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@ -0,0 +1,96 @@
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--[[
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TechAge
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=======
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Copyright (C) 2020 Joachim Stolberg
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GPL v3
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See LICENSE.txt for more information
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Mod storage based solution
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]]--
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local backend = {}
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local storage = minetest.get_mod_storage()
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-- legacy method
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local function deserialize(s)
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local tbl = {}
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for line in s:gmatch("[^;]+") do
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local num, spos = unpack(string.split(line, "="))
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tbl[num] = minetest.string_to_pos(spos)
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end
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return tbl
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end
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local Version = minetest.deserialize(storage:get_string("Version")) or 3
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local NextNumber = 0
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if Version == 1 then
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Version = 3
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local tbl = minetest.deserialize(storage:get_string("Number2Pos")) or {}
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NextNumber = minetest.deserialize(storage:get_string("NextNumber")) or 1
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for num, pos in pairs(tbl) do
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storage:set_string(num, minetest.pos_to_string(pos))
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end
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storage:set_string("Number2Pos", "")
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elseif Version == 2 then
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Version = 3
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NextNumber = minetest.deserialize(storage:get_string("NextNumber")) or 1
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local tbl = deserialize(storage:get_string("Number2Pos"))
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for num, pos in pairs(tbl) do
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storage:set_string(num, minetest.pos_to_string(pos))
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end
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storage:set_string("Number2Pos", "")
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else
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Version = 3
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NextNumber = storage:get_int("NextNumber")
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end
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storage:set_int("NextNumber", NextNumber)
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storage:set_int("Version", Version)
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-------------------------------------------------------------------
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-- API functions
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-------------------------------------------------------------------
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function backend.get_nodepos(number)
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return minetest.string_to_pos(storage:get_string(number))
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end
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function backend.set_nodepos(number, pos)
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storage:get_string(number, minetest.pos_to_string(pos))
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end
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function backend.add_nodepos(pos)
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local num = tostring(NextNumber)
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NextNumber = NextNumber + 1
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storage:set_int("NextNumber", NextNumber)
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storage:get_string(num, minetest.pos_to_string(pos))
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return num
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end
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function backend.del_nodepos(number)
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storage:get_string(number, "")
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end
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-- delete invalid entries
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function backend.delete_invalid_entries(node_def)
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minetest.log("info", "[TechAge] Data maintenance started")
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for i = 1, NextNumber do
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local number = tostring(i)
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if storage:contains(number) then
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local pos = backend.get_nodepos(number)
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local name = techage.get_node_lvm(pos).name
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if not node_def[name] then
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backend.del_nodepos(number)
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end
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end
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end
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minetest.log("info", "[TechAge] Data maintenance finished")
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end
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return backend
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@ -3,7 +3,7 @@
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TechAge
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=======
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Copyright (C) 2019 Joachim Stolberg
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Copyright (C) 2019-2020 Joachim Stolberg
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GPL v3
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See LICENSE.txt for more information
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@ -14,68 +14,62 @@
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--- for lazy programmers
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local S = function(pos) if pos then return minetest.pos_to_string(pos) end end
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local P = minetest.string_to_pos
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local M = minetest.get_meta
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--local P = minetest.string_to_pos
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--local M = minetest.get_meta
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local NodeInfoCache = {}
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local MP = minetest.get_modpath("techage")
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local use_database = minetest.settings:get_bool('techage.use_database', false)
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-- Localize functions to avoid table lookups (better performance)
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local string_split = string.split
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local NodeDef = techage.NodeDef
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local Tube = techage.Tube
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local check_cart_for_loading = minecart.check_cart_for_loading
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local function deserialize(s)
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local tbl = {}
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for line in s:gmatch("[^;]+") do
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local num, spos = unpack(string.split(line, "="))
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tbl[num] = {pos = minetest.string_to_pos(spos)}
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end
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return tbl
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end
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local function serialize(data)
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local tbl = {}
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for k,v in pairs(data) do
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tbl[#tbl+1] = k.."="..minetest.pos_to_string(v.pos)
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end
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return table.concat(tbl, ";")
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end
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------------------------------------------------------------------
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-- Data base storage
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-------------------------------------------------------------------
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local storage = minetest.get_mod_storage()
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local NextNumber = minetest.deserialize(storage:get_string("NextNumber")) or 1
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local Version = minetest.deserialize(storage:get_string("Version")) or 2
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local Number2Pos
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if Version == 1 then
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Version = 2
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Number2Pos = minetest.deserialize(storage:get_string("Number2Pos")) or {}
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-- Database
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-------------------------------------------------------------------
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local backend
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if use_database then
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backend = dofile(MP .. "/basis/backend_sqlite.lua")
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else
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Number2Pos = deserialize(storage:get_string("Number2Pos"))
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backend = dofile(MP .. "/basis/backend_storage.lua")
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end
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local function update_mod_storage()
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local t = minetest.get_us_time()
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minetest.log("action", "[TechAge] Store data...")
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storage:set_string("NextNumber", minetest.serialize(NextNumber))
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storage:set_string("Version", minetest.serialize(Version))
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storage:set_string("Number2Pos", serialize(Number2Pos))
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-- store data each hour
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minetest.after(60*59, update_mod_storage)
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t = minetest.get_us_time() - t
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minetest.log("action", "[TechAge] Data stored. t="..t.."us")
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local function update_nodeinfo(number)
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local pos = backend.get_nodepos(number)
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if pos then
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NodeInfoCache[number] = {pos = pos, name = techage.get_node_lvm(pos).name}
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return NodeInfoCache[number]
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end
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end
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minetest.register_on_shutdown(function()
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update_mod_storage()
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end)
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local function delete_nodeinfo_entry(number)
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if number and NodeInfoCache[number] then
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number, _ = next(NodeInfoCache, number)
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if number then
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NodeInfoCache[number] = nil
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end
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else
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number, _ = next(NodeInfoCache, nil)
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end
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return number
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end
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-- store data after one hour
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minetest.after(60*59, update_mod_storage)
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-- Keep the cache size small by deleting entries randomly
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local function keep_small(number)
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number = delete_nodeinfo_entry(number)
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minetest.after(2, keep_small, number)
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end
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-- Key2Number will be generated at runtine
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local Key2Number = {}
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keep_small()
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minetest.after(2, backend.delete_invalid_entries, NodeDef)
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-------------------------------------------------------------------
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-- Local helper functions
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-------------------------------------------------------------------
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local function in_list(list, x)
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for _, v in ipairs(list) do
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if v == x then return true end
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@ -83,26 +77,17 @@ local function in_list(list, x)
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return false
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end
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-- Localize functions to avoid table lookups (better performance).
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local string_split = string.split
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local NodeDef = techage.NodeDef
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local Tube = techage.Tube
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-- Determine position related node number for addressing purposes
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local function get_number(pos)
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local key = minetest.hash_node_position(pos)
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if not Key2Number[key] then
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Key2Number[key] = NextNumber
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NextNumber = NextNumber + 1
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local function get_number(pos, new)
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local meta = minetest.get_meta(pos)
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if meta:contains("node_number") then
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return meta:get_string("node_number")
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end
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return string.format("%u", Key2Number[key])
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end
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local function generate_Key2Number()
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local key
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for num,item in pairs(Number2Pos) do
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key = minetest.hash_node_position(item.pos)
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Key2Number[key] = num
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-- generate new number
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if new then
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local num = backend.add_nodepos(pos)
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meta:set_string("node_number", num)
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return num
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end
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end
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@ -135,16 +120,6 @@ local function register_lbm(name, nodenames)
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})
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end
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local DirToSide = {"B", "R", "F", "L", "D", "U"}
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local function dir_to_side(dir, param2)
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if dir < 5 then
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dir = (((dir - 1) - (param2 % 4)) % 4) + 1
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end
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return DirToSide[dir]
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end
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local SideToDir = {B=1, R=2, F=3, L=4, D=5, U=6}
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local function side_to_dir(side, param2)
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@ -192,26 +167,15 @@ end
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-- API helper functions
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-------------------------------------------------------------------
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-- Function returns { pos, name } for the node on the given position number.
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-- Function returns { pos, name } for the node referenced by number
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function techage.get_node_info(dest_num)
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if Number2Pos[dest_num] then
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return Number2Pos[dest_num]
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end
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return nil
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return NodeInfoCache[dest_num] or update_nodeinfo(dest_num)
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end
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-- Function returns the node number from the given position or
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-- nil, if no node number for this position is assigned.
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function techage.get_node_number(pos)
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local key = minetest.hash_node_position(pos)
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local num = Key2Number[key]
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if num then
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num = string.format("%u", num)
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if Number2Pos[num] and Number2Pos[num].name then
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return num
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end
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end
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return nil
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return get_number(pos)
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end
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function techage.get_pos(pos, side)
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@ -226,12 +190,7 @@ end
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-- Function is used for available nodes with lost numbers, only.
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function techage.get_new_number(pos, name)
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-- store position
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local number = get_number(pos)
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Number2Pos[number] = {
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pos = pos,
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name = name,
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}
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return number
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return get_number(pos, true)
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end
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-- extract ident and value from strings like "ident=value"
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@ -252,25 +211,22 @@ function techage.add_node(pos, name)
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Tube:after_place_node(pos)
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end
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-- store position
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local number = get_number(pos)
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Number2Pos[number] = {
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pos = pos,
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name = name,
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}
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return number
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return get_number(pos, true)
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end
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-- Function removes the node from the techage lists.
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function techage.remove_node(pos)
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local number = get_number(pos)
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local name
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if Number2Pos[number] then
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name = Number2Pos[number].name
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Number2Pos[number].name = nil
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end
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if item_handling_node(name) then
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if number then
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local ninfo = NodeInfoCache[number] or update_nodeinfo(number)
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if ninfo then
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backend.del_nodepos(number)
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NodeInfoCache[number] = nil
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if item_handling_node(ninfo.name) then
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Tube:after_dig_node(pos)
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end
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end
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end
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end
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@ -314,11 +270,9 @@ end
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-------------------------------------------------------------------
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function techage.not_protected(number, placer_name, clicker_name)
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if Number2Pos[number] and Number2Pos[number].name then
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local data = Number2Pos[number]
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if data.pos then
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return not_protected(data.pos, placer_name, clicker_name)
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end
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local ninfo = NodeInfoCache[number] or update_nodeinfo(number)
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if ninfo and ninfo.pos then
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return not_protected(ninfo.pos, placer_name, clicker_name)
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end
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return false
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end
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@ -341,10 +295,11 @@ end
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function techage.send_multi(src, numbers, topic, payload)
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--print("send_multi", src, numbers, topic)
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for _,num in ipairs(string_split(numbers, " ")) do
|
||||
if Number2Pos[num] and Number2Pos[num].name then
|
||||
local data = Number2Pos[num]
|
||||
if data.pos and NodeDef[data.name] and NodeDef[data.name].on_recv_message then
|
||||
NodeDef[data.name].on_recv_message(data.pos, src, topic, payload)
|
||||
local ninfo = NodeInfoCache[num] or update_nodeinfo(num)
|
||||
if ninfo and ninfo.name and ninfo.pos then
|
||||
local ndef = NodeDef[ninfo.name]
|
||||
if ndef and ndef.on_recv_message then
|
||||
ndef.on_recv_message(ninfo.pos, src, topic, payload)
|
||||
end
|
||||
end
|
||||
end
|
||||
@ -352,10 +307,11 @@ end
|
||||
|
||||
function techage.send_single(src, number, topic, payload)
|
||||
--print("send_single", src, number, topic)
|
||||
if Number2Pos[number] and Number2Pos[number].name then
|
||||
local data = Number2Pos[number]
|
||||
if data.pos and NodeDef[data.name] and NodeDef[data.name].on_recv_message then
|
||||
return NodeDef[data.name].on_recv_message(data.pos, src, topic, payload)
|
||||
local ninfo = NodeInfoCache[number] or update_nodeinfo(number)
|
||||
if ninfo and ninfo.name and ninfo.pos then
|
||||
local ndef = NodeDef[ninfo.name]
|
||||
if ndef and ndef.on_recv_message then
|
||||
return ndef.on_recv_message(ninfo.pos, src, topic, payload)
|
||||
end
|
||||
end
|
||||
return false
|
||||
@ -502,7 +458,6 @@ function techage.put_items(inv, listname, item, idx)
|
||||
return false
|
||||
end
|
||||
|
||||
|
||||
-- Return "full", "loaded", or "empty" depending
|
||||
-- on the inventory load.
|
||||
-- Full is returned, when no empty stack is available.
|
||||
@ -521,29 +476,3 @@ function techage.get_inv_state(inv, listname)
|
||||
end
|
||||
return state
|
||||
end
|
||||
|
||||
|
||||
-------------------------------------------------------------------------------
|
||||
-- Data Maintenance
|
||||
-------------------------------------------------------------------------------
|
||||
local function data_maintenance()
|
||||
minetest.log("info", "[TechAge] Data maintenance started")
|
||||
-- Remove unused positions
|
||||
local tbl = table.copy(Number2Pos)
|
||||
Number2Pos = {}
|
||||
for num,item in pairs(tbl) do
|
||||
local name = techage.get_node_lvm(item.pos).name
|
||||
if NodeDef[name] then
|
||||
Number2Pos[num] = item
|
||||
-- add node names which are not stored as file
|
||||
Number2Pos[num].name = name
|
||||
end
|
||||
end
|
||||
minetest.log("info", "[TechAge] Data maintenance finished")
|
||||
end
|
||||
|
||||
generate_Key2Number()
|
||||
|
||||
minetest.after(2, data_maintenance)
|
||||
|
||||
|
||||
|
||||
@ -14,7 +14,9 @@ Suche und fördere Öl, baute Schienenwege zur Ölbeförderung. Ein Kraftwerk li
|
||||
TA4: Zukunft (Future Age)
|
||||
Regenerative Energiequellen wie Wind, Sonne und Biokraft helfen dir, das Ölzeitalter zu verlassen. Mit modernen Technologien und intelligenten Maschinen machst du dich auf in die Zukunft.
|
||||
|
||||
[wlanchip|image]
|
||||
Hinweis: Mit Klicken auf die Pluszeichen kommst du in die Unterkapitel dieser Anleitung.
|
||||
|
||||
[techage_ta4|image]
|
||||
|
||||
|
||||
|
||||
|
||||
@ -14,7 +14,9 @@ Find and extract oil, built railways for oil transportation. A power plant provi
|
||||
TA4: Future Age
|
||||
Renewable energy sources such as wind, sun and biofuels help you to leave the oil age. With modern technologies and intelligent machines you set out into the future.
|
||||
|
||||
[wlanchip|image]
|
||||
Note: With a click on the plus sign you get into the subchapters of this manual.
|
||||
|
||||
[techage_ta4|image]
|
||||
|
||||
|
||||
|
||||
|
||||
Loading…
Reference in New Issue
Block a user