prosody
ff80a8471e86
tools/migration/migrator/prosody_files.lua

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tools/migration/migrator/prosody_files.lua @ 4216:ff80a8471e86

tools/migration/*: Numerous changes and restructuring, and the addition of a Makefile
author Matthew Wild <mwild1@gmail.com>
date Sat, 26 Feb 2011 00:23:48 +0000
parent 4197:tools/migration/prosody_files.lua@bef732980436
child 4239:69fe5fd861e7
comparison
equal deleted inserted replaced
4214:1674cd17557c 4216:ff80a8471e86
1
2 local print = print;
3 local assert = assert;
4 local setmetatable = setmetatable;
5 local tonumber = tonumber;
6 local char = string.char;
7 local coroutine = coroutine;
8 local lfs = require "lfs";
9 local loadfile = loadfile;
10 local setfenv = setfenv;
11 local pcall = pcall;
12 local mtools = require "migrator.mtools";
13 local next = next;
14 local pairs = pairs;
15 local json = require "util.json";
16
17 prosody = {};
18 local dm = require "util.datamanager"
19
20 module "prosody_files"
21
22 local function is_dir(path) return lfs.attributes(path, "mode") == "directory"; end
23 local function is_file(path) return lfs.attributes(path, "mode") == "file"; end
24 local function clean_path(path)
25 return path:gsub("\\", "/"):gsub("//+", "/");
26 end
27 local encode, decode; do
28 local urlcodes = setmetatable({}, { __index = function (t, k) t[k] = char(tonumber("0x"..k)); return t[k]; end });
29 decode = function (s) return s and (s:gsub("+", " "):gsub("%%([a-fA-F0-9][a-fA-F0-9])", urlcodes)); end
30 encode = function (s) return s and (s:gsub("%W", function (c) return format("%%%02x", c:byte()); end)); end
31 end
32 local function decode_dir(x)
33 if x:gsub("%%%x%x", ""):gsub("[a-zA-Z0-9]", "") == "" then
34 return decode(x);
35 end
36 end
37 local function decode_file(x)
38 if x:match(".%.dat$") and x:gsub("%.dat$", ""):gsub("%%%x%x", ""):gsub("[a-zA-Z0-9]", "") == "" then
39 return decode(x:gsub("%.dat$", ""));
40 end
41 end
42 local function prosody_dir(path, ondir, onfile, ...)
43 for x in lfs.dir(path) do
44 local xpath = path.."/"..x;
45 if decode_dir(x) and is_dir(xpath) then
46 ondir(xpath, x, ...);
47 elseif decode_file(x) and is_file(xpath) then
48 onfile(xpath, x, ...);
49 end
50 end
51 end
52
53 local function handle_root_file(path, name)
54 --print("root file: ", decode_file(name))
55 coroutine.yield { user = nil, host = nil, store = decode_file(name) };
56 end
57 local function handle_host_file(path, name, host)
58 --print("host file: ", decode_dir(host).."/"..decode_file(name))
59 coroutine.yield { user = nil, host = decode_dir(host), store = decode_file(name) };
60 end
61 local function handle_store_file(path, name, store, host)
62 --print("store file: ", decode_file(name).."@"..decode_dir(host).."/"..decode_dir(store))
63 coroutine.yield { user = decode_file(name), host = decode_dir(host), store = decode_dir(store) };
64 end
65 local function handle_host_store(path, name, host)
66 prosody_dir(path, function() end, handle_store_file, name, host);
67 end
68 local function handle_host_dir(path, name)
69 prosody_dir(path, handle_host_store, handle_host_file, name);
70 end
71 local function handle_root_dir(path)
72 prosody_dir(path, handle_host_dir, handle_root_file);
73 end
74
75 local function decode_user(item)
76 local userdata = {
77 user = item[1].user;
78 host = item[1].host;
79 stores = {};
80 };
81 for i=1,#item do -- loop over stores
82 local result = {};
83 local store = item[i];
84 userdata.stores[store.store] = store.data;
85 store.user = nil; store.host = nil; store.store = nil;
86 end
87 return userdata;
88 end
89
90 function reader(input)
91 local path = clean_path(assert(input.path, "no input.path specified"));
92 assert(is_dir(path), "input.path is not a directory");
93 local iter = coroutine.wrap(function()handle_root_dir(path);end);
94 -- get per-user stores, sorted
95 local iter = mtools.sorted {
96 reader = function()
97 local x = iter();
98 if x then
99 dm.set_data_path(path);
100 x.data = assert(dm.load(x.user, x.host, x.store));
101 return x;
102 end
103 end;
104 sorter = function(a, b)
105 local a_host, a_user, a_store = a.host or "", a.user or "", a.store or "";
106 local b_host, b_user, b_store = b.host or "", b.user or "", b.store or "";
107 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);
108 end;
109 };
110 -- merge stores to get users
111 iter = mtools.merged(iter, function(a, b)
112 return (a.host == b.host and a.user == b.user);
113 end);
114
115 return function()
116 local x = iter();
117 return x and decode_user(x);
118 end
119 end
120
121 function writer(output)
122 local path = clean_path(assert(output.path, "no output.path specified"));
123 assert(is_dir(path), "output.path is not a directory");
124 return function(item)
125 if not item then return; end -- end of input
126 dm.set_data_path(path);
127 for store, data in pairs(item.stores) do
128 assert(dm.store(item.user, item.host, store, data));
129 end
130 end
131 end
132
133 return _M;