sqlite3 support added, furnace bugfix
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Joachim Stolberg
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376e29b854
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15
README.md
15
README.md
@ -35,7 +35,8 @@ Textures: CC BY-SA 3.0
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### Dependencies
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Required: default, doors, bucket, stairs, screwdriver, basic_materials, tubelib2, minecart, lcdlib, safer_lua
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Recommended: signs_bot, hyperloop, compost, techpack_stairway, autobahn
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Optional: unified_inventory, wielded_light, unifieddyes
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Optional: unified_inventory, wielded_light, unifieddyes, lua-mashal, lsqlite3
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The mods `default`, `doors`, `bucket`, `stairs`, and `screwdriver` are part of Minetest Game.
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@ -55,21 +56,21 @@ It is highly recommended that you install the following mods, too:
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* [techpack_stairway](https://github.com/joe7575/techpack_stairway): Ladders, stairways, and bridges for your machines
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* [autobahn](https://github.com/joe7575/autobahn): Street blocks and slopes with stripes for faster traveling
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For large servers with many player, the following packages are recommended:
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### Configuration
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* `lua-mashal` for faster serialization/deserialization of data
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* `lsqlite3` for storing node and network data
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For servers with many players, it is recommended to use the external Lua library 'lua-marshal' to accelarate
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the serialization/deserialization of node data and the database SQLite (lsqlite3) to store large amounts of data.
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To be able to use 'lua-marshal' and 'lsqlite3', install the packages with:
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Both packages are installed via [luarocks](https://luarocks.org/):
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luarocks install lua-marshal
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luarocks install lsqlite3
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and add 'techage' to the list of trusted mods in minetest.conf:
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To enable this `unsafe` packages, add 'techage' to the list of trusted mods in minetest.conf:
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secure.trusted_mods = techage
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For the installation of 'luarocks' (if not already available), see: https://luarocks.org/
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For the installation of 'luarocks' (if not already available), see [luarocks](https://luarocks.org/)
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If you enable 'lsqlite3' you also have to enable 'lua-marshal'. Available worlds will be converted
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to 'lsqlite3' and 'lua-marshal', but there is no way back, so:
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@ -1,174 +0,0 @@
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--[[
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TechAge
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=======
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Copyright (C) 2019 Joachim Stolberg
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GPL v3
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See LICENSE.txt for more information
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Memory storage system for volatile and non-volatile memory.
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Non-volatile memory is stored from time to time and at shutdown
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as node metadata. Volatile memory is lost at every shutdown.
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]]--
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local S = function(pos) if pos then return minetest.pos_to_string(pos) end end
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-- Node data will be stored every NUM_SLOTS * CYCLE_TIME seconds
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local NUM_SLOTS = 50
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local CYCLE_TIME = 60
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local NvmStore = {}
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local MemStore = {}
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local NumNodes = 0
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local StoredNodes = 0
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local NextNum = 0
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local Timeslot = 0
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local FNAME = minetest.get_worldpath()..DIR_DELIM.."techage_metadata.txt"
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local use_marshal = minetest.settings:get_bool('techage_use_marshal', false)
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local MAR_MAGIC = 0x8e
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-- default functions
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local serialize = minetest.serialize
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local deserialize = minetest.deserialize
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if use_marshal then
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if not techage.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 marshal = techage.IE.require("marshal")
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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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serialize = marshal.encode
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deserialize = function(s)
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if s ~= "" then
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if s:byte(1) == MAR_MAGIC then
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return marshal.decode(s)
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else
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return minetest.deserialize(s)
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end
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end
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end
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end
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local function read_file()
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local f = io.open(FNAME, "r")
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if f ~= nil then
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local s = f:read("*all")
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io.close(f)
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return minetest.deserialize(s) or {}
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end
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return {}
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end
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local function write_file(tbl)
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local s = minetest.serialize(tbl)
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local f = io.open(FNAME, "w")
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f:write(s)
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f:close()
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end
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NvmStore = read_file()
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minetest.register_on_shutdown(function()
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write_file(NvmStore)
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end)
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local function set_metadata(hash, tbl)
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local pos = minetest.get_position_from_hash(hash)
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tbl.USED = nil
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local data = serialize(tbl)
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local meta = minetest.get_meta(pos)
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meta:set_string("ta_data", data)
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meta:mark_as_private("ta_data")
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end
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local function get_metadata(hash)
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local pos = minetest.get_position_from_hash(hash)
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local meta = minetest.get_meta(pos)
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local s = meta:get_string("ta_data")
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if s ~= "" then
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return deserialize(s)
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end
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end
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local function nvm_storage()
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local ToBeDeleted = {}
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for hash,tbl in pairs(NvmStore) do
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NumNodes = NumNodes + 1
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if tbl.USED then
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if not tbl.SLOT then
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tbl.SLOT = NextNum % NUM_SLOTS
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NextNum = NextNum + 1
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end
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if tbl.SLOT == Timeslot then
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set_metadata(hash, tbl)
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StoredNodes = StoredNodes + 1
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end
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else
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ToBeDeleted[#ToBeDeleted+1] = hash
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end
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end
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for _,hash in ipairs(ToBeDeleted) do
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NvmStore[hash] = nil
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end
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return #ToBeDeleted
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end
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local function cyclic_task()
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local t = minetest.get_us_time()
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Timeslot = (Timeslot + 1) % NUM_SLOTS
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NumNodes = 0
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StoredNodes = 0
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local deleted = nvm_storage()
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t = minetest.get_us_time() - t
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if StoredNodes > 0 then
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minetest.log("action", "[TA NVM Storage] duration="..t.."us, total="..NumNodes..", stored="..StoredNodes..", deleted="..deleted)
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end
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minetest.after(CYCLE_TIME, cyclic_task)
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end
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minetest.after(CYCLE_TIME, cyclic_task)
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-- To get the volatile node data as table
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function techage.get_mem(pos)
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local hash = minetest.hash_node_position(pos)
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if not MemStore[hash] then
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MemStore[hash] = {}
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end
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return MemStore[hash]
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end
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-- To get the nonvolatile node data as table
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function techage.get_nvm(pos)
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local hash = minetest.hash_node_position(pos)
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if not NvmStore[hash] then
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NvmStore[hash] = get_metadata(hash) or {}
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end
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NvmStore[hash].USED = true
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return NvmStore[hash]
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end
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function techage.peek_nvm(pos)
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local hash = minetest.hash_node_position(pos)
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return NvmStore[hash] or {}
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end
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-- To be called when a node is removed
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function techage.del_mem(pos)
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local meta = minetest.get_meta(pos)
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meta:set_string("ta_data", "")
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local hash = minetest.hash_node_position(pos)
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NvmStore[hash] = nil
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MemStore[hash] = nil
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end
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