From 3b2591c47d5dc035f421dc3150c1cf1f3bd7f308 Mon Sep 17 00:00:00 2001
From: Waqas Hussain <waqas20@gmail.com>
Date: Wed, 23 Feb 2011 02:16:19 +0500
Subject: tools/migration/*: Initial commit of a new migration tool. Currently
 supports Prosody files and Prosody SQL as input and output.

---
 tools/migration/prosody_files.lua | 133 ++++++++++++++++++++++++++++++++++++++
 1 file changed, 133 insertions(+)
 create mode 100644 tools/migration/prosody_files.lua

(limited to 'tools/migration/prosody_files.lua')

diff --git a/tools/migration/prosody_files.lua b/tools/migration/prosody_files.lua
new file mode 100644
index 00000000..d9c2dd45
--- /dev/null
+++ b/tools/migration/prosody_files.lua
@@ -0,0 +1,133 @@
+
+local print = print;
+local assert = assert;
+local setmetatable = setmetatable;
+local tonumber = tonumber;
+local char = string.char;
+local coroutine = coroutine;
+local lfs = require "lfs";
+local loadfile = loadfile;
+local setfenv = setfenv;
+local pcall = pcall;
+local mtools = require "mtools";
+local next = next;
+local pairs = pairs;
+local json = require "util.json";
+
+prosody = {};
+local dm = require "util.datamanager"
+
+module "prosody_files"
+
+local function is_dir(path) return lfs.attributes(path, "mode") == "directory"; end
+local function is_file(path) return lfs.attributes(path, "mode") == "file"; end
+local function clean_path(path)
+	return path:gsub("\\", "/"):gsub("//+", "/");
+end
+local encode, decode; do
+	local urlcodes = setmetatable({}, { __index = function (t, k) t[k] = char(tonumber("0x"..k)); return t[k]; end });
+	decode = function (s) return s and (s:gsub("+", " "):gsub("%%([a-fA-F0-9][a-fA-F0-9])", urlcodes)); end
+	encode = function (s) return s and (s:gsub("%W", function (c) return format("%%%02x", c:byte()); end)); end
+end
+local function decode_dir(x)
+	if x:gsub("%%%x%x", ""):gsub("[a-zA-Z0-9]", "") == "" then
+		return decode(x);
+	end
+end
+local function decode_file(x)
+	if x:match(".%.dat$") and x:gsub("%.dat$", ""):gsub("%%%x%x", ""):gsub("[a-zA-Z0-9]", "") == "" then
+		return decode(x:gsub("%.dat$", ""));
+	end
+end
+local function prosody_dir(path, ondir, onfile, ...)
+	for x in lfs.dir(path) do
+		local xpath = path.."/"..x;
+		if decode_dir(x) and is_dir(xpath) then
+			ondir(xpath, x, ...);
+		elseif decode_file(x) and is_file(xpath) then
+			onfile(xpath, x, ...);
+		end
+	end
+end
+
+local function handle_root_file(path, name)
+	--print("root file: ", decode_file(name))
+	coroutine.yield { user = nil, host = nil, store = decode_file(name) };
+end
+local function handle_host_file(path, name, host)
+	--print("host file: ", decode_dir(host).."/"..decode_file(name))
+	coroutine.yield { user = nil, host = decode_dir(host), store = decode_file(name) };
+end
+local function handle_store_file(path, name, store, host)
+	--print("store file: ", decode_file(name).."@"..decode_dir(host).."/"..decode_dir(store))
+	coroutine.yield { user = decode_file(name), host = decode_dir(host), store = decode_dir(store) };
+end
+local function handle_host_store(path, name, host)
+	prosody_dir(path, function() end, handle_store_file, name, host);
+end
+local function handle_host_dir(path, name)
+	prosody_dir(path, handle_host_store, handle_host_file, name);
+end
+local function handle_root_dir(path)
+	prosody_dir(path, handle_host_dir, handle_root_file);
+end
+
+local function decode_user(item)
+	local userdata = {
+		user = item[1].user;
+		host = item[1].host;
+		stores = {};
+	};
+	for i=1,#item do -- loop over stores
+		local result = {};
+		local store = item[i];
+		userdata.stores[store.store] = store.data;
+		store.user = nil; store.host = nil; store.store = nil;
+	end
+	return userdata;
+end
+
+function reader(input)
+	local path = clean_path(assert(input.path, "no input.path specified"));
+	assert(is_dir(path), "input.path is not a directory");
+	local iter = coroutine.wrap(function()handle_root_dir(path);end);
+	-- get per-user stores, sorted
+	local iter = mtools.sorted {
+		reader = function()
+			local x = iter();
+			if x then
+				dm.set_data_path(path);
+				x.data = assert(dm.load(x.user, x.host, x.store));
+				return x;
+			end
+		end;
+		sorter = function(a, b)
+			local a_host, a_user, a_store = a.host or "", a.user or "", a.store or "";
+			local b_host, b_user, b_store = b.host or "", b.user or "", b.store or "";
+			return a_host > b_host or (a_host==b_host and a_user > b_user) or (a_host==b_host and a_user==b_user and a_store > b_store);
+		end;
+	};
+	-- merge stores to get users
+	iter = mtools.merged(iter, function(a, b)
+		return (a.host == b.host and a.user == b.user);
+	end);
+
+	return function()
+		local x = iter();
+		return x and decode_user(x);
+	end
+end
+
+function writer(output)
+	local path = clean_path(assert(output.path, "no output.path specified"));
+	assert(is_dir(path), "output.path is not a directory");
+	return function(item)
+		if not item then return; end -- end of input
+		dm.set_data_path(path);
+		for store, data in pairs(item.stores) do
+			assert(dm.store(item.user, item.host, store, data));
+		end
+	end
+end
+
+return _M;
-- 
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