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