prosody
96f4a325b534
util/datamanager.lua

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util/datamanager.lua @ 6606:96f4a325b534

Merge 0.10->trunk
author Kim Alvefur <zash@zash.se>
date Fri, 27 Mar 2015 00:29:35 +0100
parent 6575:bdaadf70a48f
child 6644:6cb6855f60df
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1 -- Prosody IM
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2 -- Copyright (C) 2008-2010 Matthew Wild
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3 -- Copyright (C) 2008-2010 Waqas Hussain
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4 --
758
b1885732e979 GPL->MIT!
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5 -- This project is MIT/X11 licensed. Please see the
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6 -- COPYING file in the source package for more information.
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7 --
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8
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9
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10 local format = string.format;
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11 local setmetatable = setmetatable;
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12 local ipairs = ipairs;
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13 local char = string.char;
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14 local pcall = pcall;
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15 local log = require "util.logger".init("datamanager");
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16 local io_open = io.open;
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17 local os_remove = os.remove;
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18 local os_rename = os.rename;
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19 local tonumber = tonumber;
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20 local next = next;
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21 local t_insert = table.insert;
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22 local t_concat = table.concat;
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23 local envloadfile = require"util.envload".envloadfile;
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24 local serialize = require "util.serialization".serialize;
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25 local path_separator = assert ( package.config:match ( "^([^\n]+)" ) , "package.config not in standard form" ) -- Extract directory seperator from package.config (an undocumented string that comes with lua)
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26 local lfs = require "lfs";
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27 local prosody = prosody;
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28
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29 local raw_mkdir = lfs.mkdir;
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30 local function fallocate(f, offset, len)
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31 -- This assumes that current position == offset
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32 local fake_data = (" "):rep(len);
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33 local ok, msg = f:write(fake_data);
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34 if not ok then
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35 return ok, msg;
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36 end
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37 f:seek("set", offset);
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38 return true;
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39 end;
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40 pcall(function()
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41 local pposix = require "util.pposix";
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42 raw_mkdir = pposix.mkdir or raw_mkdir; -- Doesn't trample on umask
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43 fallocate = pposix.fallocate or fallocate;
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44 end);
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45
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46 module "datamanager"
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47
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48 ---- utils -----
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49 local encode, decode;
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50 do
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51 local urlcodes = setmetatable({}, { __index = function (t, k) t[k] = char(tonumber("0x"..k)); return t[k]; end });
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52
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53 decode = function (s)
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54 return s and (s:gsub("+", " "):gsub("%%([a-fA-F0-9][a-fA-F0-9])", urlcodes));
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55 end
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56
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57 encode = function (s)
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58 return s and (s:gsub("%W", function (c) return format("%%%02x", c:byte()); end));
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59 end
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60 end
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61
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62 local _mkdir = {};
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63 local function mkdir(path)
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64 path = path:gsub("/", path_separator); -- TODO as an optimization, do this during path creation rather than here
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65 if not _mkdir[path] then
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66 raw_mkdir(path);
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67 _mkdir[path] = true;
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68 end
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69 return path;
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70 end
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71
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72 local data_path = (prosody and prosody.paths and prosody.paths.data) or ".";
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73 local callbacks = {};
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74
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75 ------- API -------------
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76
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77 function set_data_path(path)
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78 log("debug", "Setting data path to: %s", path);
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79 data_path = path;
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80 end
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81
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82 local function callback(username, host, datastore, data)
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83 for _, f in ipairs(callbacks) do
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84 username, host, datastore, data = f(username, host, datastore, data);
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85 if username == false then break; end
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86 end
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87
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88 return username, host, datastore, data;
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89 end
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90 function add_callback(func)
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91 if not callbacks[func] then -- Would you really want to set the same callback more than once?
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92 callbacks[func] = true;
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93 callbacks[#callbacks+1] = func;
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94 return true;
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95 end
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96 end
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97 function remove_callback(func)
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98 if callbacks[func] then
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99 for i, f in ipairs(callbacks) do
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100 if f == func then
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101 callbacks[i] = nil;
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102 callbacks[f] = nil;
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103 return true;
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104 end
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105 end
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106 end
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107 end
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108
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109 function getpath(username, host, datastore, ext, create)
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110 ext = ext or "dat";
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111 host = (host and encode(host)) or "_global";
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112 username = username and encode(username);
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113 if username then
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114 if create then mkdir(mkdir(mkdir(data_path).."/"..host).."/"..datastore); end
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115 return format("%s/%s/%s/%s.%s", data_path, host, datastore, username, ext);
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116 else
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117 if create then mkdir(mkdir(data_path).."/"..host); end
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118 return format("%s/%s/%s.%s", data_path, host, datastore, ext);
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119 end
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120 end
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121
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122 function load(username, host, datastore)
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123 local data, ret = envloadfile(getpath(username, host, datastore), {});
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124 if not data then
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125 local mode = lfs.attributes(getpath(username, host, datastore), "mode");
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126 if not mode then
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127 log("debug", "Assuming empty %s storage ('%s') for user: %s@%s", datastore, ret, username or "nil", host or "nil");
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128 return nil;
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129 else -- file exists, but can't be read
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130 -- TODO more detailed error checking and logging?
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parents: 4452
diff changeset
131 log("error", "Failed to load %s storage ('%s') for user: %s@%s", datastore, ret, username or "nil", host or "nil");
3086
931acb1188b1 util.datamanager: When failing to load a file, and the file exists, return nil, error.
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parents: 2925
diff changeset
132 return nil, "Error reading storage";
931acb1188b1 util.datamanager: When failing to load a file, and the file exists, return nil, error.
Waqas Hussain <waqas20@gmail.com>
parents: 2925
diff changeset
133 end
117
8e5c5e6a3240 Fixed: datamanager.store and datamanager.load could crash when username or host arguments were nil. (useful for server specific and global data).
Waqas Hussain <waqas20@gmail.com>
parents: 88
diff changeset
134 end
5021
85b2689dbcfe Eliminate direct setfenv usage
Florian Zeitz <florob@babelmonkeys.de>
parents: 4452
diff changeset
135
0
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parents:
diff changeset
136 local success, ret = pcall(data);
117
8e5c5e6a3240 Fixed: datamanager.store and datamanager.load could crash when username or host arguments were nil. (useful for server specific and global data).
Waqas Hussain <waqas20@gmail.com>
parents: 88
diff changeset
137 if not success then
4993
5243b74a4cbb Hopefully inert commit to clean up logging across a number of modules, removing all cases of concatenation when building log messages
Matthew Wild <mwild1@gmail.com>
parents: 4452
diff changeset
138 log("error", "Unable to load %s storage ('%s') for user: %s@%s", datastore, ret, username or "nil", host or "nil");
3086
931acb1188b1 util.datamanager: When failing to load a file, and the file exists, return nil, error.
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parents: 2925
diff changeset
139 return nil, "Error reading storage";
117
8e5c5e6a3240 Fixed: datamanager.store and datamanager.load could crash when username or host arguments were nil. (useful for server specific and global data).
Waqas Hussain <waqas20@gmail.com>
parents: 88
diff changeset
140 end
0
3e3171b59028 First commit, where do you want to go tomorrow?
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diff changeset
141 return ret;
3e3171b59028 First commit, where do you want to go tomorrow?
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diff changeset
142 end
3e3171b59028 First commit, where do you want to go tomorrow?
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143
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parents: 5045
diff changeset
144 local function atomic_store(filename, data)
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Kim Alvefur <zash@zash.se>
parents: 5045
diff changeset
145 local scratch = filename.."~";
5d685f123332 util.datamanager: Write to a temporary file and atomically move it into place
Kim Alvefur <zash@zash.se>
parents: 5045
diff changeset
146 local f, ok, msg;
5d685f123332 util.datamanager: Write to a temporary file and atomically move it into place
Kim Alvefur <zash@zash.se>
parents: 5045
diff changeset
147 repeat
5d685f123332 util.datamanager: Write to a temporary file and atomically move it into place
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parents: 5045
diff changeset
148 f, msg = io_open(scratch, "w");
5d685f123332 util.datamanager: Write to a temporary file and atomically move it into place
Kim Alvefur <zash@zash.se>
parents: 5045
diff changeset
149 if not f then break end
5d685f123332 util.datamanager: Write to a temporary file and atomically move it into place
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parents: 5045
diff changeset
150
5d685f123332 util.datamanager: Write to a temporary file and atomically move it into place
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parents: 5045
diff changeset
151 ok, msg = f:write(data);
5d685f123332 util.datamanager: Write to a temporary file and atomically move it into place
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parents: 5045
diff changeset
152 if not ok then break end
5d685f123332 util.datamanager: Write to a temporary file and atomically move it into place
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parents: 5045
diff changeset
153
5d685f123332 util.datamanager: Write to a temporary file and atomically move it into place
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parents: 5045
diff changeset
154 ok, msg = f:close();
5d685f123332 util.datamanager: Write to a temporary file and atomically move it into place
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parents: 5045
diff changeset
155 if not ok then break end
5d685f123332 util.datamanager: Write to a temporary file and atomically move it into place
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parents: 5045
diff changeset
156
5d685f123332 util.datamanager: Write to a temporary file and atomically move it into place
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parents: 5045
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157 return os_rename(scratch, filename);
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parents: 5045
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158 until false;
5d685f123332 util.datamanager: Write to a temporary file and atomically move it into place
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parents: 5045
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159
5d685f123332 util.datamanager: Write to a temporary file and atomically move it into place
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parents: 5045
diff changeset
160 -- Cleanup
5d685f123332 util.datamanager: Write to a temporary file and atomically move it into place
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parents: 5045
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161 if f then f:close(); end
5d685f123332 util.datamanager: Write to a temporary file and atomically move it into place
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parents: 5045
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162 os_remove(scratch);
5d685f123332 util.datamanager: Write to a temporary file and atomically move it into place
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parents: 5045
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163 return nil, msg;
5d685f123332 util.datamanager: Write to a temporary file and atomically move it into place
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parents: 5045
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164 end
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parents: 5045
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165
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bdaadf70a48f util.datamanager: Check that the global 'prosody' exists before using it (fixes nil indexing in use outside of prosody)
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parents: 5441
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166 if prosody and prosody.platform ~= "posix" then
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parents: 5057
diff changeset
167 -- os.rename does not overwrite existing files on Windows
acfaf771f10e util.datamanager: Don't use os.rename on non-POSIX. It doesn't overwrite exisitng files on Windows.
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parents: 5057
diff changeset
168 -- TODO We could use Transactional NTFS on Vista and above
acfaf771f10e util.datamanager: Don't use os.rename on non-POSIX. It doesn't overwrite exisitng files on Windows.
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parents: 5057
diff changeset
169 function atomic_store(filename, data)
acfaf771f10e util.datamanager: Don't use os.rename on non-POSIX. It doesn't overwrite exisitng files on Windows.
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parents: 5057
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170 local f, err = io_open(filename, "w");
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parents: 5057
diff changeset
171 if not f then return f, err; end
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parents: 5057
diff changeset
172 local ok, msg = f:write(data);
acfaf771f10e util.datamanager: Don't use os.rename on non-POSIX. It doesn't overwrite exisitng files on Windows.
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parents: 5057
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173 if not ok then f:close(); return ok, msg; end
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parents: 5057
diff changeset
174 return f:close();
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parents: 5057
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175 end
acfaf771f10e util.datamanager: Don't use os.rename on non-POSIX. It doesn't overwrite exisitng files on Windows.
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parents: 5057
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176 end
acfaf771f10e util.datamanager: Don't use os.rename on non-POSIX. It doesn't overwrite exisitng files on Windows.
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parents: 5057
diff changeset
177
0
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diff changeset
178 function store(username, host, datastore, data)
206
e30d0e30a0ff Datamanager now deletes files with no data
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parents: 182
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179 if not data then
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parents: 182
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180 data = {};
e30d0e30a0ff Datamanager now deletes files with no data
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parents: 182
diff changeset
181 end
1381
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parents: 1097
diff changeset
182
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parents: 1097
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183 username, host, datastore, data = callback(username, host, datastore, data);
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44780b856ce7 datamanager: Fixed incorrect callback result checking
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parents: 1381
diff changeset
184 if username == false then
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parents: 1097
diff changeset
185 return true; -- Don't save this data at all
46a58df8557d util.datamanager: Allow multiple data storage callbacks, and allow them to modify parameters
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parents: 1097
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186 end
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parents: 1097
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187
206
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parents: 182
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188 -- save the datastore
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parents: 5045
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189 local d = "return " .. serialize(data) .. ";\n";
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Matthew Wild <mwild1@gmail.com>
parents: 5440
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190 local mkdir_cache_cleared;
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parents: 5440
diff changeset
191 repeat
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parents: 5440
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192 local ok, msg = atomic_store(getpath(username, host, datastore, nil, true), d);
6a5c622cc6d4 util.datamanager: Clear the cache of created directories on storage failure, and retry
Matthew Wild <mwild1@gmail.com>
parents: 5440
diff changeset
193 if not ok then
6a5c622cc6d4 util.datamanager: Clear the cache of created directories on storage failure, and retry
Matthew Wild <mwild1@gmail.com>
parents: 5440
diff changeset
194 if not mkdir_cache_cleared then -- We may need to recreate a removed directory
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parents: 5440
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195 _mkdir = {};
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parents: 5440
diff changeset
196 mkdir_cache_cleared = true;
6a5c622cc6d4 util.datamanager: Clear the cache of created directories on storage failure, and retry
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parents: 5440
diff changeset
197 else
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parents: 5440
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198 log("error", "Unable to write to %s storage ('%s') for user: %s@%s", datastore, msg, username or "nil", host or "nil");
6a5c622cc6d4 util.datamanager: Clear the cache of created directories on storage failure, and retry
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parents: 5440
diff changeset
199 return nil, "Error saving to storage";
6a5c622cc6d4 util.datamanager: Clear the cache of created directories on storage failure, and retry
Matthew Wild <mwild1@gmail.com>
parents: 5440
diff changeset
200 end
6a5c622cc6d4 util.datamanager: Clear the cache of created directories on storage failure, and retry
Matthew Wild <mwild1@gmail.com>
parents: 5440
diff changeset
201 end
6a5c622cc6d4 util.datamanager: Clear the cache of created directories on storage failure, and retry
Matthew Wild <mwild1@gmail.com>
parents: 5440
diff changeset
202 if next(data) == nil then -- try to delete empty datastore
6a5c622cc6d4 util.datamanager: Clear the cache of created directories on storage failure, and retry
Matthew Wild <mwild1@gmail.com>
parents: 5440
diff changeset
203 log("debug", "Removing empty %s datastore for user %s@%s", datastore, username or "nil", host or "nil");
6a5c622cc6d4 util.datamanager: Clear the cache of created directories on storage failure, and retry
Matthew Wild <mwild1@gmail.com>
parents: 5440
diff changeset
204 os_remove(getpath(username, host, datastore));
6a5c622cc6d4 util.datamanager: Clear the cache of created directories on storage failure, and retry
Matthew Wild <mwild1@gmail.com>
parents: 5440
diff changeset
205 end
6a5c622cc6d4 util.datamanager: Clear the cache of created directories on storage failure, and retry
Matthew Wild <mwild1@gmail.com>
parents: 5440
diff changeset
206 -- we write data even when we are deleting because lua doesn't have a
6a5c622cc6d4 util.datamanager: Clear the cache of created directories on storage failure, and retry
Matthew Wild <mwild1@gmail.com>
parents: 5440
diff changeset
207 -- platform independent way of checking for non-exisitng files
6a5c622cc6d4 util.datamanager: Clear the cache of created directories on storage failure, and retry
Matthew Wild <mwild1@gmail.com>
parents: 5440
diff changeset
208 until ok;
0
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parents:
diff changeset
209 return true;
3e3171b59028 First commit, where do you want to go tomorrow?
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parents:
diff changeset
210 end
3e3171b59028 First commit, where do you want to go tomorrow?
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parents:
diff changeset
211
247
681b29aa134f Added support for storing (and removing), loading and appending to lists of data to datamanager (for supporting offline messages)
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parents: 206
diff changeset
212 function list_append(username, host, datastore, data)
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parents: 206
diff changeset
213 if not data then return; end
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44780b856ce7 datamanager: Fixed incorrect callback result checking
Waqas Hussain <waqas20@gmail.com>
parents: 1381
diff changeset
214 if callback(username, host, datastore) == false then return true; end
247
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parents: 206
diff changeset
215 -- save the datastore
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4be7093edde9 util.datamanager: Try to open in read+write mode, then retry with write mode if that fails (usually because it doesn't exist)
Kim Alvefur <zash@zash.se>
parents: 5057
diff changeset
216 local f, msg = io_open(getpath(username, host, datastore, "list", true), "r+");
4be7093edde9 util.datamanager: Try to open in read+write mode, then retry with write mode if that fails (usually because it doesn't exist)
Kim Alvefur <zash@zash.se>
parents: 5057
diff changeset
217 if not f then
4be7093edde9 util.datamanager: Try to open in read+write mode, then retry with write mode if that fails (usually because it doesn't exist)
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parents: 5057
diff changeset
218 f, msg = io_open(getpath(username, host, datastore, "list", true), "w");
4be7093edde9 util.datamanager: Try to open in read+write mode, then retry with write mode if that fails (usually because it doesn't exist)
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parents: 5057
diff changeset
219 end
247
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Waqas Hussain <waqas20@gmail.com>
parents: 206
diff changeset
220 if not f then
4993
5243b74a4cbb Hopefully inert commit to clean up logging across a number of modules, removing all cases of concatenation when building log messages
Matthew Wild <mwild1@gmail.com>
parents: 4452
diff changeset
221 log("error", "Unable to write to %s storage ('%s') for user: %s@%s", datastore, msg, username or "nil", host or "nil");
247
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parents: 206
diff changeset
222 return;
681b29aa134f Added support for storing (and removing), loading and appending to lists of data to datamanager (for supporting offline messages)
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parents: 206
diff changeset
223 end
5045
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parents: 5038
diff changeset
224 local data = "item(" .. serialize(data) .. ");\n";
4ba6940deed0 util.datamanager: Use pposix.fallocate() to make sure appends succeed. Also add a fallback fallocate()
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parents: 5038
diff changeset
225 local pos = f:seek("end");
4ba6940deed0 util.datamanager: Use pposix.fallocate() to make sure appends succeed. Also add a fallback fallocate()
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parents: 5038
diff changeset
226 local ok, msg = fallocate(f, pos, #data);
4ba6940deed0 util.datamanager: Use pposix.fallocate() to make sure appends succeed. Also add a fallback fallocate()
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parents: 5038
diff changeset
227 f:seek("set", pos);
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parents: 5038
diff changeset
228 if ok then
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parents: 5038
diff changeset
229 f:write(data);
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parents: 5038
diff changeset
230 else
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parents: 5038
diff changeset
231 log("error", "Unable to write to %s storage ('%s') for user: %s@%s", datastore, msg, username or "nil", host or "nil");
4ba6940deed0 util.datamanager: Use pposix.fallocate() to make sure appends succeed. Also add a fallback fallocate()
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parents: 5038
diff changeset
232 return ok, msg;
4ba6940deed0 util.datamanager: Use pposix.fallocate() to make sure appends succeed. Also add a fallback fallocate()
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parents: 5038
diff changeset
233 end
247
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parents: 206
diff changeset
234 f:close();
681b29aa134f Added support for storing (and removing), loading and appending to lists of data to datamanager (for supporting offline messages)
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parents: 206
diff changeset
235 return true;
681b29aa134f Added support for storing (and removing), loading and appending to lists of data to datamanager (for supporting offline messages)
Waqas Hussain <waqas20@gmail.com>
parents: 206
diff changeset
236 end
681b29aa134f Added support for storing (and removing), loading and appending to lists of data to datamanager (for supporting offline messages)
Waqas Hussain <waqas20@gmail.com>
parents: 206
diff changeset
237
681b29aa134f Added support for storing (and removing), loading and appending to lists of data to datamanager (for supporting offline messages)
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parents: 206
diff changeset
238 function list_store(username, host, datastore, data)
681b29aa134f Added support for storing (and removing), loading and appending to lists of data to datamanager (for supporting offline messages)
Waqas Hussain <waqas20@gmail.com>
parents: 206
diff changeset
239 if not data then
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parents: 206
diff changeset
240 data = {};
681b29aa134f Added support for storing (and removing), loading and appending to lists of data to datamanager (for supporting offline messages)
Waqas Hussain <waqas20@gmail.com>
parents: 206
diff changeset
241 end
1462
44780b856ce7 datamanager: Fixed incorrect callback result checking
Waqas Hussain <waqas20@gmail.com>
parents: 1381
diff changeset
242 if callback(username, host, datastore) == false then return true; end
247
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Waqas Hussain <waqas20@gmail.com>
parents: 206
diff changeset
243 -- save the datastore
5049
5d685f123332 util.datamanager: Write to a temporary file and atomically move it into place
Kim Alvefur <zash@zash.se>
parents: 5045
diff changeset
244 local d = {};
5d685f123332 util.datamanager: Write to a temporary file and atomically move it into place
Kim Alvefur <zash@zash.se>
parents: 5045
diff changeset
245 for _, item in ipairs(data) do
5d685f123332 util.datamanager: Write to a temporary file and atomically move it into place
Kim Alvefur <zash@zash.se>
parents: 5045
diff changeset
246 d[#d+1] = "item(" .. serialize(item) .. ");\n";
5d685f123332 util.datamanager: Write to a temporary file and atomically move it into place
Kim Alvefur <zash@zash.se>
parents: 5045
diff changeset
247 end
5d685f123332 util.datamanager: Write to a temporary file and atomically move it into place
Kim Alvefur <zash@zash.se>
parents: 5045
diff changeset
248 local ok, msg = atomic_store(getpath(username, host, datastore, "list", true), t_concat(d));
5d685f123332 util.datamanager: Write to a temporary file and atomically move it into place
Kim Alvefur <zash@zash.se>
parents: 5045
diff changeset
249 if not ok then
4993
5243b74a4cbb Hopefully inert commit to clean up logging across a number of modules, removing all cases of concatenation when building log messages
Matthew Wild <mwild1@gmail.com>
parents: 4452
diff changeset
250 log("error", "Unable to write to %s storage ('%s') for user: %s@%s", datastore, msg, username or "nil", host or "nil");
247
681b29aa134f Added support for storing (and removing), loading and appending to lists of data to datamanager (for supporting offline messages)
Waqas Hussain <waqas20@gmail.com>
parents: 206
diff changeset
251 return;
681b29aa134f Added support for storing (and removing), loading and appending to lists of data to datamanager (for supporting offline messages)
Waqas Hussain <waqas20@gmail.com>
parents: 206
diff changeset
252 end
915
0fe5bf7ab81d util.datamanager: Don't delete data when first entry in table is 'false'. My favourite bug so far.
Matthew Wild <mwild1@gmail.com>
parents: 896
diff changeset
253 if next(data) == nil then -- try to delete empty datastore
1732
f1282fad2f99 datamanager: Fixed logging errors on deletion of datastores not owned by a user@host
Waqas Hussain <waqas20@gmail.com>
parents: 1523
diff changeset
254 log("debug", "Removing empty %s datastore for user %s@%s", datastore, username or "nil", host or "nil");
247
681b29aa134f Added support for storing (and removing), loading and appending to lists of data to datamanager (for supporting offline messages)
Waqas Hussain <waqas20@gmail.com>
parents: 206
diff changeset
255 os_remove(getpath(username, host, datastore, "list"));
681b29aa134f Added support for storing (and removing), loading and appending to lists of data to datamanager (for supporting offline messages)
Waqas Hussain <waqas20@gmail.com>
parents: 206
diff changeset
256 end
681b29aa134f Added support for storing (and removing), loading and appending to lists of data to datamanager (for supporting offline messages)
Waqas Hussain <waqas20@gmail.com>
parents: 206
diff changeset
257 -- we write data even when we are deleting because lua doesn't have a
681b29aa134f Added support for storing (and removing), loading and appending to lists of data to datamanager (for supporting offline messages)
Waqas Hussain <waqas20@gmail.com>
parents: 206
diff changeset
258 -- platform independent way of checking for non-exisitng files
681b29aa134f Added support for storing (and removing), loading and appending to lists of data to datamanager (for supporting offline messages)
Waqas Hussain <waqas20@gmail.com>
parents: 206
diff changeset
259 return true;
681b29aa134f Added support for storing (and removing), loading and appending to lists of data to datamanager (for supporting offline messages)
Waqas Hussain <waqas20@gmail.com>
parents: 206
diff changeset
260 end
681b29aa134f Added support for storing (and removing), loading and appending to lists of data to datamanager (for supporting offline messages)
Waqas Hussain <waqas20@gmail.com>
parents: 206
diff changeset
261
681b29aa134f Added support for storing (and removing), loading and appending to lists of data to datamanager (for supporting offline messages)
Waqas Hussain <waqas20@gmail.com>
parents: 206
diff changeset
262 function list_load(username, host, datastore)
5021
85b2689dbcfe Eliminate direct setfenv usage
Florian Zeitz <florob@babelmonkeys.de>
parents: 4452
diff changeset
263 local items = {};
85b2689dbcfe Eliminate direct setfenv usage
Florian Zeitz <florob@babelmonkeys.de>
parents: 4452
diff changeset
264 local data, ret = envloadfile(getpath(username, host, datastore, "list"), {item = function(i) t_insert(items, i); end});
247
681b29aa134f Added support for storing (and removing), loading and appending to lists of data to datamanager (for supporting offline messages)
Waqas Hussain <waqas20@gmail.com>
parents: 206
diff changeset
265 if not data then
3722
f15b6ed967b7 util.datamanager: When failing to load a list file, and the file exists, log an error, and return nil, error.
Waqas Hussain <waqas20@gmail.com>
parents: 3108
diff changeset
266 local mode = lfs.attributes(getpath(username, host, datastore, "list"), "mode");
f15b6ed967b7 util.datamanager: When failing to load a list file, and the file exists, log an error, and return nil, error.
Waqas Hussain <waqas20@gmail.com>
parents: 3108
diff changeset
267 if not mode then
4993
5243b74a4cbb Hopefully inert commit to clean up logging across a number of modules, removing all cases of concatenation when building log messages
Matthew Wild <mwild1@gmail.com>
parents: 4452
diff changeset
268 log("debug", "Assuming empty %s storage ('%s') for user: %s@%s", datastore, ret, username or "nil", host or "nil");
3722
f15b6ed967b7 util.datamanager: When failing to load a list file, and the file exists, log an error, and return nil, error.
Waqas Hussain <waqas20@gmail.com>
parents: 3108
diff changeset
269 return nil;
f15b6ed967b7 util.datamanager: When failing to load a list file, and the file exists, log an error, and return nil, error.
Waqas Hussain <waqas20@gmail.com>
parents: 3108
diff changeset
270 else -- file exists, but can't be read
f15b6ed967b7 util.datamanager: When failing to load a list file, and the file exists, log an error, and return nil, error.
Waqas Hussain <waqas20@gmail.com>
parents: 3108
diff changeset
271 -- TODO more detailed error checking and logging?
4993
5243b74a4cbb Hopefully inert commit to clean up logging across a number of modules, removing all cases of concatenation when building log messages
Matthew Wild <mwild1@gmail.com>
parents: 4452
diff changeset
272 log("error", "Failed to load %s storage ('%s') for user: %s@%s", datastore, ret, username or "nil", host or "nil");
3722
f15b6ed967b7 util.datamanager: When failing to load a list file, and the file exists, log an error, and return nil, error.
Waqas Hussain <waqas20@gmail.com>
parents: 3108
diff changeset
273 return nil, "Error reading storage";
f15b6ed967b7 util.datamanager: When failing to load a list file, and the file exists, log an error, and return nil, error.
Waqas Hussain <waqas20@gmail.com>
parents: 3108
diff changeset
274 end
247
681b29aa134f Added support for storing (and removing), loading and appending to lists of data to datamanager (for supporting offline messages)
Waqas Hussain <waqas20@gmail.com>
parents: 206
diff changeset
275 end
5021
85b2689dbcfe Eliminate direct setfenv usage
Florian Zeitz <florob@babelmonkeys.de>
parents: 4452
diff changeset
276
247
681b29aa134f Added support for storing (and removing), loading and appending to lists of data to datamanager (for supporting offline messages)
Waqas Hussain <waqas20@gmail.com>
parents: 206
diff changeset
277 local success, ret = pcall(data);
681b29aa134f Added support for storing (and removing), loading and appending to lists of data to datamanager (for supporting offline messages)
Waqas Hussain <waqas20@gmail.com>
parents: 206
diff changeset
278 if not success then
4993
5243b74a4cbb Hopefully inert commit to clean up logging across a number of modules, removing all cases of concatenation when building log messages
Matthew Wild <mwild1@gmail.com>
parents: 4452
diff changeset
279 log("error", "Unable to load %s storage ('%s') for user: %s@%s", datastore, ret, username or "nil", host or "nil");
3723
72a917d910a4 util.datamanager: Return an error string when pcall fails on a loaded list file.
Waqas Hussain <waqas20@gmail.com>
parents: 3722
diff changeset
280 return nil, "Error reading storage";
247
681b29aa134f Added support for storing (and removing), loading and appending to lists of data to datamanager (for supporting offline messages)
Waqas Hussain <waqas20@gmail.com>
parents: 206
diff changeset
281 end
681b29aa134f Added support for storing (and removing), loading and appending to lists of data to datamanager (for supporting offline messages)
Waqas Hussain <waqas20@gmail.com>
parents: 206
diff changeset
282 return items;
681b29aa134f Added support for storing (and removing), loading and appending to lists of data to datamanager (for supporting offline messages)
Waqas Hussain <waqas20@gmail.com>
parents: 206
diff changeset
283 end
681b29aa134f Added support for storing (and removing), loading and appending to lists of data to datamanager (for supporting offline messages)
Waqas Hussain <waqas20@gmail.com>
parents: 206
diff changeset
284
5130
051d352ed03c storagemanager, datamanager, mod_storage_{internal,sql}: Replace list_stores() with an iterator version
Kim Alvefur <zash@zash.se>
parents: 5118
diff changeset
285 local type_map = {
051d352ed03c storagemanager, datamanager, mod_storage_{internal,sql}: Replace list_stores() with an iterator version
Kim Alvefur <zash@zash.se>
parents: 5118
diff changeset
286 keyval = "dat";
051d352ed03c storagemanager, datamanager, mod_storage_{internal,sql}: Replace list_stores() with an iterator version
Kim Alvefur <zash@zash.se>
parents: 5118
diff changeset
287 list = "list";
051d352ed03c storagemanager, datamanager, mod_storage_{internal,sql}: Replace list_stores() with an iterator version
Kim Alvefur <zash@zash.se>
parents: 5118
diff changeset
288 }
051d352ed03c storagemanager, datamanager, mod_storage_{internal,sql}: Replace list_stores() with an iterator version
Kim Alvefur <zash@zash.se>
parents: 5118
diff changeset
289
5153
688aeac0012a mod_storage_internal, datamanager: Add support for iterating over users with data in a store
Kim Alvefur <zash@zash.se>
parents: 5130
diff changeset
290 function users(host, store, typ)
688aeac0012a mod_storage_internal, datamanager: Add support for iterating over users with data in a store
Kim Alvefur <zash@zash.se>
parents: 5130
diff changeset
291 typ = type_map[typ or "keyval"];
5250
6d8ec8c90240 util.datamanager: Don't escape the name of a store
Kim Alvefur <zash@zash.se>
parents: 5244
diff changeset
292 local store_dir = format("%s/%s/%s", data_path, encode(host), store);
5153
688aeac0012a mod_storage_internal, datamanager: Add support for iterating over users with data in a store
Kim Alvefur <zash@zash.se>
parents: 5130
diff changeset
293
688aeac0012a mod_storage_internal, datamanager: Add support for iterating over users with data in a store
Kim Alvefur <zash@zash.se>
parents: 5130
diff changeset
294 local mode, err = lfs.attributes(store_dir, "mode");
688aeac0012a mod_storage_internal, datamanager: Add support for iterating over users with data in a store
Kim Alvefur <zash@zash.se>
parents: 5130
diff changeset
295 if not mode then
688aeac0012a mod_storage_internal, datamanager: Add support for iterating over users with data in a store
Kim Alvefur <zash@zash.se>
parents: 5130
diff changeset
296 return function() log("debug", err or (store_dir .. " does not exist")) end
688aeac0012a mod_storage_internal, datamanager: Add support for iterating over users with data in a store
Kim Alvefur <zash@zash.se>
parents: 5130
diff changeset
297 end
688aeac0012a mod_storage_internal, datamanager: Add support for iterating over users with data in a store
Kim Alvefur <zash@zash.se>
parents: 5130
diff changeset
298 local next, state = lfs.dir(store_dir);
688aeac0012a mod_storage_internal, datamanager: Add support for iterating over users with data in a store
Kim Alvefur <zash@zash.se>
parents: 5130
diff changeset
299 return function(state)
688aeac0012a mod_storage_internal, datamanager: Add support for iterating over users with data in a store
Kim Alvefur <zash@zash.se>
parents: 5130
diff changeset
300 for node in next, state do
688aeac0012a mod_storage_internal, datamanager: Add support for iterating over users with data in a store
Kim Alvefur <zash@zash.se>
parents: 5130
diff changeset
301 local file, ext = node:match("^(.*)%.([dalist]+)$");
688aeac0012a mod_storage_internal, datamanager: Add support for iterating over users with data in a store
Kim Alvefur <zash@zash.se>
parents: 5130
diff changeset
302 if file and ext == typ then
688aeac0012a mod_storage_internal, datamanager: Add support for iterating over users with data in a store
Kim Alvefur <zash@zash.se>
parents: 5130
diff changeset
303 return decode(file);
688aeac0012a mod_storage_internal, datamanager: Add support for iterating over users with data in a store
Kim Alvefur <zash@zash.se>
parents: 5130
diff changeset
304 end
688aeac0012a mod_storage_internal, datamanager: Add support for iterating over users with data in a store
Kim Alvefur <zash@zash.se>
parents: 5130
diff changeset
305 end
688aeac0012a mod_storage_internal, datamanager: Add support for iterating over users with data in a store
Kim Alvefur <zash@zash.se>
parents: 5130
diff changeset
306 end, state;
688aeac0012a mod_storage_internal, datamanager: Add support for iterating over users with data in a store
Kim Alvefur <zash@zash.se>
parents: 5130
diff changeset
307 end
688aeac0012a mod_storage_internal, datamanager: Add support for iterating over users with data in a store
Kim Alvefur <zash@zash.se>
parents: 5130
diff changeset
308
5130
051d352ed03c storagemanager, datamanager, mod_storage_{internal,sql}: Replace list_stores() with an iterator version
Kim Alvefur <zash@zash.se>
parents: 5118
diff changeset
309 function stores(username, host, typ)
051d352ed03c storagemanager, datamanager, mod_storage_{internal,sql}: Replace list_stores() with an iterator version
Kim Alvefur <zash@zash.se>
parents: 5118
diff changeset
310 typ = type_map[typ or "keyval"];
051d352ed03c storagemanager, datamanager, mod_storage_{internal,sql}: Replace list_stores() with an iterator version
Kim Alvefur <zash@zash.se>
parents: 5118
diff changeset
311 local store_dir = format("%s/%s/", data_path, encode(host));
051d352ed03c storagemanager, datamanager, mod_storage_{internal,sql}: Replace list_stores() with an iterator version
Kim Alvefur <zash@zash.se>
parents: 5118
diff changeset
312
051d352ed03c storagemanager, datamanager, mod_storage_{internal,sql}: Replace list_stores() with an iterator version
Kim Alvefur <zash@zash.se>
parents: 5118
diff changeset
313 local mode, err = lfs.attributes(store_dir, "mode");
051d352ed03c storagemanager, datamanager, mod_storage_{internal,sql}: Replace list_stores() with an iterator version
Kim Alvefur <zash@zash.se>
parents: 5118
diff changeset
314 if not mode then
051d352ed03c storagemanager, datamanager, mod_storage_{internal,sql}: Replace list_stores() with an iterator version
Kim Alvefur <zash@zash.se>
parents: 5118
diff changeset
315 return function() log("debug", err or (store_dir .. " does not exist")) end
5032
c40ea227f8af util.datamanager: Add function for listing stores
Kim Alvefur <zash@zash.se>
parents: 5024
diff changeset
316 end
5130
051d352ed03c storagemanager, datamanager, mod_storage_{internal,sql}: Replace list_stores() with an iterator version
Kim Alvefur <zash@zash.se>
parents: 5118
diff changeset
317 local next, state = lfs.dir(store_dir);
051d352ed03c storagemanager, datamanager, mod_storage_{internal,sql}: Replace list_stores() with an iterator version
Kim Alvefur <zash@zash.se>
parents: 5118
diff changeset
318 return function(state)
051d352ed03c storagemanager, datamanager, mod_storage_{internal,sql}: Replace list_stores() with an iterator version
Kim Alvefur <zash@zash.se>
parents: 5118
diff changeset
319 for node in next, state do
051d352ed03c storagemanager, datamanager, mod_storage_{internal,sql}: Replace list_stores() with an iterator version
Kim Alvefur <zash@zash.se>
parents: 5118
diff changeset
320 if not node:match"^%." then
051d352ed03c storagemanager, datamanager, mod_storage_{internal,sql}: Replace list_stores() with an iterator version
Kim Alvefur <zash@zash.se>
parents: 5118
diff changeset
321 if username == true then
051d352ed03c storagemanager, datamanager, mod_storage_{internal,sql}: Replace list_stores() with an iterator version
Kim Alvefur <zash@zash.se>
parents: 5118
diff changeset
322 if lfs.attributes(store_dir..node, "mode") == "directory" then
051d352ed03c storagemanager, datamanager, mod_storage_{internal,sql}: Replace list_stores() with an iterator version
Kim Alvefur <zash@zash.se>
parents: 5118
diff changeset
323 return decode(node);
051d352ed03c storagemanager, datamanager, mod_storage_{internal,sql}: Replace list_stores() with an iterator version
Kim Alvefur <zash@zash.se>
parents: 5118
diff changeset
324 end
051d352ed03c storagemanager, datamanager, mod_storage_{internal,sql}: Replace list_stores() with an iterator version
Kim Alvefur <zash@zash.se>
parents: 5118
diff changeset
325 elseif username then
051d352ed03c storagemanager, datamanager, mod_storage_{internal,sql}: Replace list_stores() with an iterator version
Kim Alvefur <zash@zash.se>
parents: 5118
diff changeset
326 local store = decode(node)
051d352ed03c storagemanager, datamanager, mod_storage_{internal,sql}: Replace list_stores() with an iterator version
Kim Alvefur <zash@zash.se>
parents: 5118
diff changeset
327 if lfs.attributes(getpath(username, host, store, typ), "mode") then
051d352ed03c storagemanager, datamanager, mod_storage_{internal,sql}: Replace list_stores() with an iterator version
Kim Alvefur <zash@zash.se>
parents: 5118
diff changeset
328 return store;
051d352ed03c storagemanager, datamanager, mod_storage_{internal,sql}: Replace list_stores() with an iterator version
Kim Alvefur <zash@zash.se>
parents: 5118
diff changeset
329 end
051d352ed03c storagemanager, datamanager, mod_storage_{internal,sql}: Replace list_stores() with an iterator version
Kim Alvefur <zash@zash.se>
parents: 5118
diff changeset
330 elseif lfs.attributes(node, "mode") == "file" then
051d352ed03c storagemanager, datamanager, mod_storage_{internal,sql}: Replace list_stores() with an iterator version
Kim Alvefur <zash@zash.se>
parents: 5118
diff changeset
331 local file, ext = node:match("^(.*)%.([dalist]+)$");
051d352ed03c storagemanager, datamanager, mod_storage_{internal,sql}: Replace list_stores() with an iterator version
Kim Alvefur <zash@zash.se>
parents: 5118
diff changeset
332 if ext == typ then
051d352ed03c storagemanager, datamanager, mod_storage_{internal,sql}: Replace list_stores() with an iterator version
Kim Alvefur <zash@zash.se>
parents: 5118
diff changeset
333 return decode(file)
051d352ed03c storagemanager, datamanager, mod_storage_{internal,sql}: Replace list_stores() with an iterator version
Kim Alvefur <zash@zash.se>
parents: 5118
diff changeset
334 end
5032
c40ea227f8af util.datamanager: Add function for listing stores
Kim Alvefur <zash@zash.se>
parents: 5024
diff changeset
335 end
c40ea227f8af util.datamanager: Add function for listing stores
Kim Alvefur <zash@zash.se>
parents: 5024
diff changeset
336 end
c40ea227f8af util.datamanager: Add function for listing stores
Kim Alvefur <zash@zash.se>
parents: 5024
diff changeset
337 end
5130
051d352ed03c storagemanager, datamanager, mod_storage_{internal,sql}: Replace list_stores() with an iterator version
Kim Alvefur <zash@zash.se>
parents: 5118
diff changeset
338 end, state;
5032
c40ea227f8af util.datamanager: Add function for listing stores
Kim Alvefur <zash@zash.se>
parents: 5024
diff changeset
339 end
c40ea227f8af util.datamanager: Add function for listing stores
Kim Alvefur <zash@zash.se>
parents: 5024
diff changeset
340
5103
5a1488369c35 util.datamanager: Ignore errors if the file is gone after removing it
Kim Alvefur <zash@zash.se>
parents: 5095
diff changeset
341 local function do_remove(path)
5a1488369c35 util.datamanager: Ignore errors if the file is gone after removing it
Kim Alvefur <zash@zash.se>
parents: 5095
diff changeset
342 local ok, err = os_remove(path);
5a1488369c35 util.datamanager: Ignore errors if the file is gone after removing it
Kim Alvefur <zash@zash.se>
parents: 5095
diff changeset
343 if not ok and lfs.attributes(path, "mode") then
5a1488369c35 util.datamanager: Ignore errors if the file is gone after removing it
Kim Alvefur <zash@zash.se>
parents: 5095
diff changeset
344 return ok, err;
5a1488369c35 util.datamanager: Ignore errors if the file is gone after removing it
Kim Alvefur <zash@zash.se>
parents: 5095
diff changeset
345 end
5a1488369c35 util.datamanager: Ignore errors if the file is gone after removing it
Kim Alvefur <zash@zash.se>
parents: 5095
diff changeset
346 return true
5a1488369c35 util.datamanager: Ignore errors if the file is gone after removing it
Kim Alvefur <zash@zash.se>
parents: 5095
diff changeset
347 end
5a1488369c35 util.datamanager: Ignore errors if the file is gone after removing it
Kim Alvefur <zash@zash.se>
parents: 5095
diff changeset
348
5038
242c62ff8e77 util.datamanager: Add function for removing all data belonging to a user
Kim Alvefur <zash@zash.se>
parents: 5032
diff changeset
349 function purge(username, host)
242c62ff8e77 util.datamanager: Add function for removing all data belonging to a user
Kim Alvefur <zash@zash.se>
parents: 5032
diff changeset
350 local host_dir = format("%s/%s/", data_path, encode(host));
5095
dddbcd62183a util.datamanager: Collect errors when deleting all stores of a user, but ignore "no such file"
Kim Alvefur <zash@zash.se>
parents: 5069
diff changeset
351 local errs = {};
5038
242c62ff8e77 util.datamanager: Add function for removing all data belonging to a user
Kim Alvefur <zash@zash.se>
parents: 5032
diff changeset
352 for file in lfs.dir(host_dir) do
242c62ff8e77 util.datamanager: Add function for removing all data belonging to a user
Kim Alvefur <zash@zash.se>
parents: 5032
diff changeset
353 if lfs.attributes(host_dir..file, "mode") == "directory" then
242c62ff8e77 util.datamanager: Add function for removing all data belonging to a user
Kim Alvefur <zash@zash.se>
parents: 5032
diff changeset
354 local store = decode(file);
5103
5a1488369c35 util.datamanager: Ignore errors if the file is gone after removing it
Kim Alvefur <zash@zash.se>
parents: 5095
diff changeset
355 local ok, err = do_remove(getpath(username, host, store));
5a1488369c35 util.datamanager: Ignore errors if the file is gone after removing it
Kim Alvefur <zash@zash.se>
parents: 5095
diff changeset
356 if not ok then errs[#errs+1] = err; end
5a1488369c35 util.datamanager: Ignore errors if the file is gone after removing it
Kim Alvefur <zash@zash.se>
parents: 5095
diff changeset
357
5a1488369c35 util.datamanager: Ignore errors if the file is gone after removing it
Kim Alvefur <zash@zash.se>
parents: 5095
diff changeset
358 local ok, err = do_remove(getpath(username, host, store, "list"));
5a1488369c35 util.datamanager: Ignore errors if the file is gone after removing it
Kim Alvefur <zash@zash.se>
parents: 5095
diff changeset
359 if not ok then errs[#errs+1] = err; end
5038
242c62ff8e77 util.datamanager: Add function for removing all data belonging to a user
Kim Alvefur <zash@zash.se>
parents: 5032
diff changeset
360 end
242c62ff8e77 util.datamanager: Add function for removing all data belonging to a user
Kim Alvefur <zash@zash.se>
parents: 5032
diff changeset
361 end
5095
dddbcd62183a util.datamanager: Collect errors when deleting all stores of a user, but ignore "no such file"
Kim Alvefur <zash@zash.se>
parents: 5069
diff changeset
362 return #errs == 0, t_concat(errs, ", ");
5038
242c62ff8e77 util.datamanager: Add function for removing all data belonging to a user
Kim Alvefur <zash@zash.se>
parents: 5032
diff changeset
363 end
242c62ff8e77 util.datamanager: Add function for removing all data belonging to a user
Kim Alvefur <zash@zash.se>
parents: 5032
diff changeset
364
5440
a943e5cbf083 util.datamanager: expose path decode and encode functions.
Marco Cirillo <maranda@lightwitch.org>
parents: 5250
diff changeset
365 _M.path_decode = decode;
a943e5cbf083 util.datamanager: expose path decode and encode functions.
Marco Cirillo <maranda@lightwitch.org>
parents: 5250
diff changeset
366 _M.path_encode = encode;
247
681b29aa134f Added support for storing (and removing), loading and appending to lists of data to datamanager (for supporting offline messages)
Waqas Hussain <waqas20@gmail.com>
parents: 206
diff changeset
367 return _M;