prosody
50fcd3879482
util/datamanager.lua

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util/datamanager.lua @ 12388:50fcd3879482 0.12.0

spelling: non-existing mistakes (thanks timeless)
author Kim Alvefur <zash@zash.se>
date Mon, 07 Mar 2022 00:35:29 +0100
parent 12387:05c250fa335a
child 12975:d10957394a3c
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rev   line source
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diff changeset
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 --
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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 type = type;
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22 local t_insert = table.insert;
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23 local t_concat = table.concat;
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24 local envloadfile = require"util.envload".envloadfile;
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25 local serialize = require "util.serialization".serialize;
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26 local lfs = require "lfs";
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27 -- Extract directory separator from package.config (an undocumented string that comes with lua)
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28 local path_separator = assert ( package.config:match ( "^([^\n]+)" ) , "package.config not in standard form" )
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29
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30 local prosody = prosody;
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31
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32 local raw_mkdir = lfs.mkdir;
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33 local atomic_append;
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34 local ENOENT = 2;
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35 pcall(function()
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36 local pposix = require "util.pposix";
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37 raw_mkdir = pposix.mkdir or raw_mkdir; -- Doesn't trample on umask
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38 atomic_append = pposix.atomic_append;
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39 ENOENT = pposix.ENOENT or ENOENT;
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40 end);
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41
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42 local _ENV = nil;
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43 -- luacheck: std none
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44
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45 ---- utils -----
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46 local encode, decode, store_encode;
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47 do
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48 local urlcodes = setmetatable({}, { __index = function (t, k) t[k] = char(tonumber(k, 16)); return t[k]; end });
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50 decode = function (s)
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51 return s and (s:gsub("%%(%x%x)", urlcodes));
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52 end
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53
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54 encode = function (s)
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55 return s and (s:gsub("%W", function (c) return format("%%%02x", c:byte()); end));
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56 end
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57
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58 -- Special encode function for store names, which historically were unencoded.
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59 -- All currently known stores use a-z and underscore, so this one preserves underscores.
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60 store_encode = function (s)
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61 return s and (s:gsub("[^_%w]", function (c) return format("%%%02x", c:byte()); end));
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62 end
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63 end
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64
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65 if not atomic_append then
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66 function atomic_append(f, data)
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67 local pos = f:seek();
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68 if not f:write(data) or not f:flush() then
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69 f:seek("set", pos);
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70 f:write((" "):rep(#data));
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71 f:flush();
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72 return nil, "write-failed";
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73 end
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74 return true;
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75 end
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76 end
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77
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78 local _mkdir = {};
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79 local function mkdir(path)
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80 path = path:gsub("/", path_separator); -- TODO as an optimization, do this during path creation rather than here
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81 if not _mkdir[path] then
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82 raw_mkdir(path);
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83 _mkdir[path] = true;
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84 end
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85 return path;
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86 end
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87
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88 local data_path = (prosody and prosody.paths and prosody.paths.data) or ".";
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89 local callbacks = {};
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90
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91 ------- API -------------
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92
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93 local function set_data_path(path)
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94 log("debug", "Setting data path to: %s", path);
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95 data_path = path;
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96 end
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97
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98 local function callback(username, host, datastore, data)
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99 for _, f in ipairs(callbacks) do
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100 username, host, datastore, data = f(username, host, datastore, data);
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101 if username == false then break; end
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102 end
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103
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104 return username, host, datastore, data;
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105 end
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106 local function add_callback(func)
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107 if not callbacks[func] then -- Would you really want to set the same callback more than once?
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108 callbacks[func] = true;
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109 callbacks[#callbacks+1] = func;
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110 return true;
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111 end
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112 end
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113 local function remove_callback(func)
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114 if callbacks[func] then
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115 for i, f in ipairs(callbacks) do
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116 if f == func then
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117 callbacks[i] = nil;
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118 callbacks[f] = nil;
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119 return true;
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120 end
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121 end
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122 end
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123 end
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124
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125 local function getpath(username, host, datastore, ext, create)
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126 ext = ext or "dat";
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127 host = (host and encode(host)) or "_global";
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128 username = username and encode(username);
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129 datastore = store_encode(datastore);
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130 if username then
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131 if create then mkdir(mkdir(mkdir(data_path).."/"..host).."/"..datastore); end
8ff454831f7d Moved directory auto-creation to datamanager
Waqas Hussain <waqas20@gmail.com>
parents: 628
diff changeset
132 return format("%s/%s/%s/%s.%s", data_path, host, datastore, username, ext);
5243
07e8256efcda util.datamanager: Remove dead code path
Kim Alvefur <zash@zash.se>
parents: 5153
diff changeset
133 else
643
8ff454831f7d Moved directory auto-creation to datamanager
Waqas Hussain <waqas20@gmail.com>
parents: 628
diff changeset
134 if create then mkdir(mkdir(data_path).."/"..host); end
8ff454831f7d Moved directory auto-creation to datamanager
Waqas Hussain <waqas20@gmail.com>
parents: 628
diff changeset
135 return format("%s/%s/%s.%s", data_path, host, datastore, ext);
84
d0a0bac6815e Added: Datastore support for hosts and global data in addition to users
Waqas Hussain <waqas20@gmail.com>
parents: 0
diff changeset
136 end
0
3e3171b59028 First commit, where do you want to go tomorrow?
matthew
parents:
diff changeset
137 end
3e3171b59028 First commit, where do you want to go tomorrow?
matthew
parents:
diff changeset
138
6777
5de6b93d0190 util.*: Remove use of module() function, make all module functions local and return them in a table at the end
Kim Alvefur <zash@zash.se>
parents: 6681
diff changeset
139 local function load(username, host, datastore)
7925
209503ee3aaa util.datamanager: Ignore ENOENT (no such file) when loading data
Kim Alvefur <zash@zash.se>
parents: 7734
diff changeset
140 local data, err, errno = envloadfile(getpath(username, host, datastore), {});
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
141 if not data then
7925
209503ee3aaa util.datamanager: Ignore ENOENT (no such file) when loading data
Kim Alvefur <zash@zash.se>
parents: 7734
diff changeset
142 if errno == ENOENT then
209503ee3aaa util.datamanager: Ignore ENOENT (no such file) when loading data
Kim Alvefur <zash@zash.se>
parents: 7734
diff changeset
143 -- No such file, ok to ignore
209503ee3aaa util.datamanager: Ignore ENOENT (no such file) when loading data
Kim Alvefur <zash@zash.se>
parents: 7734
diff changeset
144 return nil;
209503ee3aaa util.datamanager: Ignore ENOENT (no such file) when loading data
Kim Alvefur <zash@zash.se>
parents: 7734
diff changeset
145 end
7996
f4c0fb54e16c util.datamanager: Remove check for file non-existence since ENOENT tells us that already
Kim Alvefur <zash@zash.se>
parents: 7995
diff changeset
146 log("error", "Failed to load %s storage ('%s') for user: %s@%s", datastore, err, username or "nil", host or "nil");
f4c0fb54e16c util.datamanager: Remove check for file non-existence since ENOENT tells us that already
Kim Alvefur <zash@zash.se>
parents: 7995
diff changeset
147 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
148 end
5021
85b2689dbcfe Eliminate direct setfenv usage
Florian Zeitz <florob@babelmonkeys.de>
parents: 4452
diff changeset
149
0
3e3171b59028 First commit, where do you want to go tomorrow?
matthew
parents:
diff changeset
150 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
151 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
152 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.
Waqas Hussain <waqas20@gmail.com>
parents: 2925
diff changeset
153 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
154 end
0
3e3171b59028 First commit, where do you want to go tomorrow?
matthew
parents:
diff changeset
155 return ret;
3e3171b59028 First commit, where do you want to go tomorrow?
matthew
parents:
diff changeset
156 end
3e3171b59028 First commit, where do you want to go tomorrow?
matthew
parents:
diff changeset
157
5049
5d685f123332 util.datamanager: Write to a temporary file and atomically move it into place
Kim Alvefur <zash@zash.se>
parents: 5045
diff changeset
158 local function atomic_store(filename, data)
5d685f123332 util.datamanager: Write to a temporary file and atomically move it into place
Kim Alvefur <zash@zash.se>
parents: 5045
diff changeset
159 local scratch = filename.."~";
10531
810abf34919a util.datamanager: Ignore unused 'errno' variable [luacheck]
Kim Alvefur <zash@zash.se>
parents: 9993
diff changeset
160 local f, ok, msg, errno; -- luacheck: ignore errno
810abf34919a util.datamanager: Ignore unused 'errno' variable [luacheck]
Kim Alvefur <zash@zash.se>
parents: 9993
diff changeset
161 -- TODO return util.error with code=errno?
5049
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Kim Alvefur <zash@zash.se>
parents: 5045
diff changeset
162
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Kim Alvefur <zash@zash.se>
parents: 7734
diff changeset
163 f, msg, errno = io_open(scratch, "w");
7202
5bf0ff3882aa util.datamanager: Explicit handling of each error condition (see #632)
Kim Alvefur <zash@zash.se>
parents: 7201
diff changeset
164 if not f then
5bf0ff3882aa util.datamanager: Explicit handling of each error condition (see #632)
Kim Alvefur <zash@zash.se>
parents: 7201
diff changeset
165 return nil, msg;
5bf0ff3882aa util.datamanager: Explicit handling of each error condition (see #632)
Kim Alvefur <zash@zash.se>
parents: 7201
diff changeset
166 end
5049
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parents: 5045
diff changeset
167
7202
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parents: 7201
diff changeset
168 ok, msg = f:write(data);
5bf0ff3882aa util.datamanager: Explicit handling of each error condition (see #632)
Kim Alvefur <zash@zash.se>
parents: 7201
diff changeset
169 if not ok then
5bf0ff3882aa util.datamanager: Explicit handling of each error condition (see #632)
Kim Alvefur <zash@zash.se>
parents: 7201
diff changeset
170 f:close();
5bf0ff3882aa util.datamanager: Explicit handling of each error condition (see #632)
Kim Alvefur <zash@zash.se>
parents: 7201
diff changeset
171 os_remove(scratch);
5bf0ff3882aa util.datamanager: Explicit handling of each error condition (see #632)
Kim Alvefur <zash@zash.se>
parents: 7201
diff changeset
172 return nil, msg;
5bf0ff3882aa util.datamanager: Explicit handling of each error condition (see #632)
Kim Alvefur <zash@zash.se>
parents: 7201
diff changeset
173 end
5049
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parents: 5045
diff changeset
174
7202
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Kim Alvefur <zash@zash.se>
parents: 7201
diff changeset
175 ok, msg = f:close();
5bf0ff3882aa util.datamanager: Explicit handling of each error condition (see #632)
Kim Alvefur <zash@zash.se>
parents: 7201
diff changeset
176 if not ok then
5bf0ff3882aa util.datamanager: Explicit handling of each error condition (see #632)
Kim Alvefur <zash@zash.se>
parents: 7201
diff changeset
177 os_remove(scratch);
5bf0ff3882aa util.datamanager: Explicit handling of each error condition (see #632)
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parents: 7201
diff changeset
178 return nil, msg;
5bf0ff3882aa util.datamanager: Explicit handling of each error condition (see #632)
Kim Alvefur <zash@zash.se>
parents: 7201
diff changeset
179 end
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parents: 5045
diff changeset
180
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parents: 7201
diff changeset
181 return os_rename(scratch, filename);
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parents: 5045
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182 end
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parents: 5045
diff changeset
183
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Kim Alvefur <zash@zash.se>
parents: 5441
diff changeset
184 if prosody and prosody.platform ~= "posix" then
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parents: 5057
diff changeset
185 -- os.rename does not overwrite existing files on Windows
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parents: 5057
diff changeset
186 -- TODO We could use Transactional NTFS on Vista and above
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parents: 5057
diff changeset
187 function atomic_store(filename, data)
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parents: 5057
diff changeset
188 local f, err = io_open(filename, "w");
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parents: 5057
diff changeset
189 if not f then return f, err; 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
190 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
diff changeset
191 if not ok then f:close(); return ok, msg; 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
192 return f:close();
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
193 end
acfaf771f10e util.datamanager: Don't use os.rename on non-POSIX. It doesn't overwrite exisitng files on Windows.
Waqas Hussain <waqas20@gmail.com>
parents: 5057
diff changeset
194 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
195
6777
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Kim Alvefur <zash@zash.se>
parents: 6681
diff changeset
196 local function store(username, host, datastore, data)
206
e30d0e30a0ff Datamanager now deletes files with no data
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parents: 182
diff changeset
197 if not data then
e30d0e30a0ff Datamanager now deletes files with no data
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parents: 182
diff changeset
198 data = {};
e30d0e30a0ff Datamanager now deletes files with no data
Waqas Hussain <waqas20@gmail.com>
parents: 182
diff changeset
199 end
1381
46a58df8557d util.datamanager: Allow multiple data storage callbacks, and allow them to modify parameters
Matthew Wild <mwild1@gmail.com>
parents: 1097
diff changeset
200
46a58df8557d util.datamanager: Allow multiple data storage callbacks, and allow them to modify parameters
Matthew Wild <mwild1@gmail.com>
parents: 1097
diff changeset
201 username, host, datastore, data = callback(username, host, datastore, data);
1462
44780b856ce7 datamanager: Fixed incorrect callback result checking
Waqas Hussain <waqas20@gmail.com>
parents: 1381
diff changeset
202 if username == false then
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46a58df8557d util.datamanager: Allow multiple data storage callbacks, and allow them to modify parameters
Matthew Wild <mwild1@gmail.com>
parents: 1097
diff changeset
203 return true; -- Don't save this data at all
46a58df8557d util.datamanager: Allow multiple data storage callbacks, and allow them to modify parameters
Matthew Wild <mwild1@gmail.com>
parents: 1097
diff changeset
204 end
46a58df8557d util.datamanager: Allow multiple data storage callbacks, and allow them to modify parameters
Matthew Wild <mwild1@gmail.com>
parents: 1097
diff changeset
205
206
e30d0e30a0ff Datamanager now deletes files with no data
Waqas Hussain <waqas20@gmail.com>
parents: 182
diff changeset
206 -- save the datastore
5049
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parents: 5045
diff changeset
207 local d = "return " .. serialize(data) .. ";\n";
5441
6a5c622cc6d4 util.datamanager: Clear the cache of created directories on storage failure, and retry
Matthew Wild <mwild1@gmail.com>
parents: 5440
diff changeset
208 local mkdir_cache_cleared;
6a5c622cc6d4 util.datamanager: Clear the cache of created directories on storage failure, and retry
Matthew Wild <mwild1@gmail.com>
parents: 5440
diff changeset
209 repeat
6a5c622cc6d4 util.datamanager: Clear the cache of created directories on storage failure, and retry
Matthew Wild <mwild1@gmail.com>
parents: 5440
diff changeset
210 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
211 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
212 if not mkdir_cache_cleared then -- We may need to recreate a removed directory
6a5c622cc6d4 util.datamanager: Clear the cache of created directories on storage failure, and retry
Matthew Wild <mwild1@gmail.com>
parents: 5440
diff changeset
213 _mkdir = {};
6a5c622cc6d4 util.datamanager: Clear the cache of created directories on storage failure, and retry
Matthew Wild <mwild1@gmail.com>
parents: 5440
diff changeset
214 mkdir_cache_cleared = true;
6a5c622cc6d4 util.datamanager: Clear the cache of created directories on storage failure, and retry
Matthew Wild <mwild1@gmail.com>
parents: 5440
diff changeset
215 else
6a5c622cc6d4 util.datamanager: Clear the cache of created directories on storage failure, and retry
Matthew Wild <mwild1@gmail.com>
parents: 5440
diff changeset
216 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
Matthew Wild <mwild1@gmail.com>
parents: 5440
diff changeset
217 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
218 end
6a5c622cc6d4 util.datamanager: Clear the cache of created directories on storage failure, and retry
Matthew Wild <mwild1@gmail.com>
parents: 5440
diff changeset
219 end
6a5c622cc6d4 util.datamanager: Clear the cache of created directories on storage failure, and retry
Matthew Wild <mwild1@gmail.com>
parents: 5440
diff changeset
220 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
221 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
222 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
223 end
6a5c622cc6d4 util.datamanager: Clear the cache of created directories on storage failure, and retry
Matthew Wild <mwild1@gmail.com>
parents: 5440
diff changeset
224 -- we write data even when we are deleting because lua doesn't have a
12388
50fcd3879482 spelling: non-existing mistakes (thanks timeless)
Kim Alvefur <zash@zash.se>
parents: 12387
diff changeset
225 -- platform independent way of checking for nonexisting files
5441
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Matthew Wild <mwild1@gmail.com>
parents: 5440
diff changeset
226 until ok;
0
3e3171b59028 First commit, where do you want to go tomorrow?
matthew
parents:
diff changeset
227 return true;
3e3171b59028 First commit, where do you want to go tomorrow?
matthew
parents:
diff changeset
228 end
3e3171b59028 First commit, where do you want to go tomorrow?
matthew
parents:
diff changeset
229
6999
0ad66d12113a util.datamanager: Add some comments about the append function
Kim Alvefur <zash@zash.se>
parents: 6998
diff changeset
230 -- Append a blob of data to a file
6992
0622f2820d1d util.datamanager: Factor out code for appending bytes to a file
Kim Alvefur <zash@zash.se>
parents: 6777
diff changeset
231 local function append(username, host, datastore, ext, data)
7000
2b57f77985a3 util.datamanager: Make sure only strings are passed as data to append()
Kim Alvefur <zash@zash.se>
parents: 6999
diff changeset
232 if type(data) ~= "string" then return; end
6994
507301531cf5 util.datamanager: In append() collect status when closing file handle as it may fail (eg the implied flush)
Kim Alvefur <zash@zash.se>
parents: 6993
diff changeset
233 local filename = getpath(username, host, datastore, ext, true);
6996
644b1bddc676 util.datamanager: No shadowing of variable [luacheck]
Kim Alvefur <zash@zash.se>
parents: 6995
diff changeset
234
8013
72cfbe377326 util.datamanager: Rearrange locals
Kim Alvefur <zash@zash.se>
parents: 8011
diff changeset
235 local f = io_open(filename, "r+");
5066
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
236 if not f then
7928
9d014aca766f util.datamanager: Use atomic store function when writing the first entry of a list
Kim Alvefur <zash@zash.se>
parents: 7927
diff changeset
237 return atomic_store(filename, data);
6999
0ad66d12113a util.datamanager: Add some comments about the append function
Kim Alvefur <zash@zash.se>
parents: 6998
diff changeset
238 -- File did probably not exist, let's create it
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
239 end
6999
0ad66d12113a util.datamanager: Add some comments about the append function
Kim Alvefur <zash@zash.se>
parents: 6998
diff changeset
240
5045
4ba6940deed0 util.datamanager: Use pposix.fallocate() to make sure appends succeed. Also add a fallback fallocate()
Kim Alvefur <zash@zash.se>
parents: 5038
diff changeset
241 local pos = f:seek("end");
6997
0ab228bc21c6 util.datamanager: Handle potential issues from fallocate
Kim Alvefur <zash@zash.se>
parents: 6996
diff changeset
242
8013
72cfbe377326 util.datamanager: Rearrange locals
Kim Alvefur <zash@zash.se>
parents: 8011
diff changeset
243 local ok, msg = atomic_append(f, data);
6997
0ab228bc21c6 util.datamanager: Handle potential issues from fallocate
Kim Alvefur <zash@zash.se>
parents: 6996
diff changeset
244
6998
86607fe755b6 util.datamanager: Handle potential error from :write() call
Kim Alvefur <zash@zash.se>
parents: 6997
diff changeset
245 if not ok then
86607fe755b6 util.datamanager: Handle potential error from :write() call
Kim Alvefur <zash@zash.se>
parents: 6997
diff changeset
246 f:close();
7001
2743759ca1b5 util.datamanager: Return extra location info
Kim Alvefur <zash@zash.se>
parents: 7000
diff changeset
247 return ok, msg, "write";
6992
0622f2820d1d util.datamanager: Factor out code for appending bytes to a file
Kim Alvefur <zash@zash.se>
parents: 6777
diff changeset
248 end
6994
507301531cf5 util.datamanager: In append() collect status when closing file handle as it may fail (eg the implied flush)
Kim Alvefur <zash@zash.se>
parents: 6993
diff changeset
249
507301531cf5 util.datamanager: In append() collect status when closing file handle as it may fail (eg the implied flush)
Kim Alvefur <zash@zash.se>
parents: 6993
diff changeset
250 ok, msg = f:close();
507301531cf5 util.datamanager: In append() collect status when closing file handle as it may fail (eg the implied flush)
Kim Alvefur <zash@zash.se>
parents: 6993
diff changeset
251 if not ok then
8014
ff3787033abb util.datamanager: Log where the error came from
Kim Alvefur <zash@zash.se>
parents: 8013
diff changeset
252 return ok, msg, "close";
6994
507301531cf5 util.datamanager: In append() collect status when closing file handle as it may fail (eg the implied flush)
Kim Alvefur <zash@zash.se>
parents: 6993
diff changeset
253 end
507301531cf5 util.datamanager: In append() collect status when closing file handle as it may fail (eg the implied flush)
Kim Alvefur <zash@zash.se>
parents: 6993
diff changeset
254
7001
2743759ca1b5 util.datamanager: Return extra location info
Kim Alvefur <zash@zash.se>
parents: 7000
diff changeset
255 return true, pos;
6992
0622f2820d1d util.datamanager: Factor out code for appending bytes to a file
Kim Alvefur <zash@zash.se>
parents: 6777
diff changeset
256 end
0622f2820d1d util.datamanager: Factor out code for appending bytes to a file
Kim Alvefur <zash@zash.se>
parents: 6777
diff changeset
257
0622f2820d1d util.datamanager: Factor out code for appending bytes to a file
Kim Alvefur <zash@zash.se>
parents: 6777
diff changeset
258 local function list_append(username, host, datastore, data)
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
259 if not data then return; end
1462
44780b856ce7 datamanager: Fixed incorrect callback result checking
Waqas Hussain <waqas20@gmail.com>
parents: 1381
diff changeset
260 if callback(username, host, datastore) == false then return true; 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
261 -- save the datastore
6992
0622f2820d1d util.datamanager: Factor out code for appending bytes to a file
Kim Alvefur <zash@zash.se>
parents: 6777
diff changeset
262
6993
dc0c6b8dc638 util.datamanager: Overwrite 'data' variable instead of shadownig it [luacheck]
Kim Alvefur <zash@zash.se>
parents: 6992
diff changeset
263 data = "item(" .. serialize(data) .. ");\n";
8014
ff3787033abb util.datamanager: Log where the error came from
Kim Alvefur <zash@zash.se>
parents: 8013
diff changeset
264 local ok, msg, where = append(username, host, datastore, "list", data);
6992
0622f2820d1d util.datamanager: Factor out code for appending bytes to a file
Kim Alvefur <zash@zash.se>
parents: 6777
diff changeset
265 if not ok then
8014
ff3787033abb util.datamanager: Log where the error came from
Kim Alvefur <zash@zash.se>
parents: 8013
diff changeset
266 log("error", "Unable to write to %s storage ('%s' in %s) for user: %s@%s",
ff3787033abb util.datamanager: Log where the error came from
Kim Alvefur <zash@zash.se>
parents: 8013
diff changeset
267 datastore, msg, where, username or "nil", host or "nil");
5045
4ba6940deed0 util.datamanager: Use pposix.fallocate() to make sure appends succeed. Also add a fallback fallocate()
Kim Alvefur <zash@zash.se>
parents: 5038
diff changeset
268 return ok, msg;
4ba6940deed0 util.datamanager: Use pposix.fallocate() to make sure appends succeed. Also add a fallback fallocate()
Kim Alvefur <zash@zash.se>
parents: 5038
diff changeset
269 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
270 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
271 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
272
6777
5de6b93d0190 util.*: Remove use of module() function, make all module functions local and return them in a table at the end
Kim Alvefur <zash@zash.se>
parents: 6681
diff changeset
273 local function list_store(username, host, datastore, data)
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
274 if not data then
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 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
276 end
1462
44780b856ce7 datamanager: Fixed incorrect callback result checking
Waqas Hussain <waqas20@gmail.com>
parents: 1381
diff changeset
277 if callback(username, host, datastore) == false then return true; 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
278 -- 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
279 local d = {};
8092
0a1c0f1107d2 util.datamanager: Use already known index instead of measuring length each iteration
Kim Alvefur <zash@zash.se>
parents: 8014
diff changeset
280 for i, item in ipairs(data) do
0a1c0f1107d2 util.datamanager: Use already known index instead of measuring length each iteration
Kim Alvefur <zash@zash.se>
parents: 8014
diff changeset
281 d[i] = "item(" .. serialize(item) .. ");\n";
5049
5d685f123332 util.datamanager: Write to a temporary file and atomically move it into place
Kim Alvefur <zash@zash.se>
parents: 5045
diff changeset
282 end
5d685f123332 util.datamanager: Write to a temporary file and atomically move it into place
Kim Alvefur <zash@zash.se>
parents: 5045
diff changeset
283 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
284 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
285 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
286 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
287 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
288 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
289 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
290 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
291 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
292 -- we write data even when we are deleting because lua doesn't have a
12388
50fcd3879482 spelling: non-existing mistakes (thanks timeless)
Kim Alvefur <zash@zash.se>
parents: 12387
diff changeset
293 -- platform independent way of checking for nonexisting files
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
294 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
295 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
296
6777
5de6b93d0190 util.*: Remove use of module() function, make all module functions local and return them in a table at the end
Kim Alvefur <zash@zash.se>
parents: 6681
diff changeset
297 local function list_load(username, host, datastore)
5021
85b2689dbcfe Eliminate direct setfenv usage
Florian Zeitz <florob@babelmonkeys.de>
parents: 4452
diff changeset
298 local items = {};
7925
209503ee3aaa util.datamanager: Ignore ENOENT (no such file) when loading data
Kim Alvefur <zash@zash.se>
parents: 7734
diff changeset
299 local data, err, errno = 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
300 if not data then
7925
209503ee3aaa util.datamanager: Ignore ENOENT (no such file) when loading data
Kim Alvefur <zash@zash.se>
parents: 7734
diff changeset
301 if errno == ENOENT then
209503ee3aaa util.datamanager: Ignore ENOENT (no such file) when loading data
Kim Alvefur <zash@zash.se>
parents: 7734
diff changeset
302 -- No such file, ok to ignore
209503ee3aaa util.datamanager: Ignore ENOENT (no such file) when loading data
Kim Alvefur <zash@zash.se>
parents: 7734
diff changeset
303 return nil;
209503ee3aaa util.datamanager: Ignore ENOENT (no such file) when loading data
Kim Alvefur <zash@zash.se>
parents: 7734
diff changeset
304 end
7996
f4c0fb54e16c util.datamanager: Remove check for file non-existence since ENOENT tells us that already
Kim Alvefur <zash@zash.se>
parents: 7995
diff changeset
305 log("error", "Failed to load %s storage ('%s') for user: %s@%s", datastore, err, username or "nil", host or "nil");
f4c0fb54e16c util.datamanager: Remove check for file non-existence since ENOENT tells us that already
Kim Alvefur <zash@zash.se>
parents: 7995
diff changeset
306 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
307 end
5021
85b2689dbcfe Eliminate direct setfenv usage
Florian Zeitz <florob@babelmonkeys.de>
parents: 4452
diff changeset
308
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
309 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
310 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
311 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
312 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
313 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
314 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
315 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
316
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 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
318 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
319 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
320 }
051d352ed03c storagemanager, datamanager, mod_storage_{internal,sql}: Replace list_stores() with an iterator version
Kim Alvefur <zash@zash.se>
parents: 5118
diff changeset
321
7674
8027eecc750f util.datamanager: Add annotations to ignore name clashes [luacheck]
Kim Alvefur <zash@zash.se>
parents: 7673
diff changeset
322 local function users(host, store, typ) -- luacheck: ignore 431/store
11369
87105a9a11df util.datamanager: Support iterating over any file extension
Kim Alvefur <zash@zash.se>
parents: 11288
diff changeset
323 typ = "."..(type_map[typ or "keyval"] or typ);
10665
69acda92d5a9 util.datamanager: Fix iterating over "users" (thanks marc0s)
Kim Alvefur <zash@zash.se>
parents: 8555
diff changeset
324 local store_dir = format("%s/%s/%s", data_path, encode(host), store_encode(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
325
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
326 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
327 if not mode then
6644
6cb6855f60df util.datamanager: Fix traceback due to %s in log message
Kim Alvefur <zash@zash.se>
parents: 6575
diff changeset
328 return function() log("debug", "%s", err or (store_dir .. " does not exist")) end
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
329 end
7674
8027eecc750f util.datamanager: Add annotations to ignore name clashes [luacheck]
Kim Alvefur <zash@zash.se>
parents: 7673
diff changeset
330 local next, state = lfs.dir(store_dir); -- luacheck: ignore 431/next 431/state
8027eecc750f util.datamanager: Add annotations to ignore name clashes [luacheck]
Kim Alvefur <zash@zash.se>
parents: 7673
diff changeset
331 return function(state) -- luacheck: ignore 431/state
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
332 for node in next, state do
11369
87105a9a11df util.datamanager: Support iterating over any file extension
Kim Alvefur <zash@zash.se>
parents: 11288
diff changeset
333 if node:sub(-#typ, -1) == typ then
87105a9a11df util.datamanager: Support iterating over any file extension
Kim Alvefur <zash@zash.se>
parents: 11288
diff changeset
334 return decode(node:sub(1, -#typ-1));
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
335 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
336 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
337 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
338 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
339
6777
5de6b93d0190 util.*: Remove use of module() function, make all module functions local and return them in a table at the end
Kim Alvefur <zash@zash.se>
parents: 6681
diff changeset
340 local function stores(username, host, typ)
5130
051d352ed03c storagemanager, datamanager, mod_storage_{internal,sql}: Replace list_stores() with an iterator version
Kim Alvefur <zash@zash.se>
parents: 5118
diff changeset
341 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
342 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
343
051d352ed03c storagemanager, datamanager, mod_storage_{internal,sql}: Replace list_stores() with an iterator version
Kim Alvefur <zash@zash.se>
parents: 5118
diff changeset
344 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
345 if not mode then
11288
5fd1f1b544a0 util.datamanager: Fix not passing variables as format string to logger (thanks semgrep)
Kim Alvefur <zash@zash.se>
parents: 10666
diff changeset
346 return function() log("debug", "Could not iterate over stores in %s: %s", store_dir, err); end
5032
c40ea227f8af util.datamanager: Add function for listing stores
Kim Alvefur <zash@zash.se>
parents: 5024
diff changeset
347 end
7674
8027eecc750f util.datamanager: Add annotations to ignore name clashes [luacheck]
Kim Alvefur <zash@zash.se>
parents: 7673
diff changeset
348 local next, state = lfs.dir(store_dir); -- luacheck: ignore 431/next 431/state
8027eecc750f util.datamanager: Add annotations to ignore name clashes [luacheck]
Kim Alvefur <zash@zash.se>
parents: 7673
diff changeset
349 return function(state) -- luacheck: ignore 431/state
5130
051d352ed03c storagemanager, datamanager, mod_storage_{internal,sql}: Replace list_stores() with an iterator version
Kim Alvefur <zash@zash.se>
parents: 5118
diff changeset
350 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
351 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
352 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
353 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
354 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
355 end
051d352ed03c storagemanager, datamanager, mod_storage_{internal,sql}: Replace list_stores() with an iterator version
Kim Alvefur <zash@zash.se>
parents: 5118
diff changeset
356 elseif username then
7673
177d569307fd util.datamanager: Rename variables to avoid name clashes [luacheck]
Kim Alvefur <zash@zash.se>
parents: 7432
diff changeset
357 local store_name = decode(node);
177d569307fd util.datamanager: Rename variables to avoid name clashes [luacheck]
Kim Alvefur <zash@zash.se>
parents: 7432
diff changeset
358 if lfs.attributes(getpath(username, host, store_name, typ), "mode") then
177d569307fd util.datamanager: Rename variables to avoid name clashes [luacheck]
Kim Alvefur <zash@zash.se>
parents: 7432
diff changeset
359 return store_name;
5130
051d352ed03c storagemanager, datamanager, mod_storage_{internal,sql}: Replace list_stores() with an iterator version
Kim Alvefur <zash@zash.se>
parents: 5118
diff changeset
360 end
051d352ed03c storagemanager, datamanager, mod_storage_{internal,sql}: Replace list_stores() with an iterator version
Kim Alvefur <zash@zash.se>
parents: 5118
diff changeset
361 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
362 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
363 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
364 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
365 end
5032
c40ea227f8af util.datamanager: Add function for listing stores
Kim Alvefur <zash@zash.se>
parents: 5024
diff changeset
366 end
c40ea227f8af util.datamanager: Add function for listing stores
Kim Alvefur <zash@zash.se>
parents: 5024
diff changeset
367 end
c40ea227f8af util.datamanager: Add function for listing stores
Kim Alvefur <zash@zash.se>
parents: 5024
diff changeset
368 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
369 end, state;
5032
c40ea227f8af util.datamanager: Add function for listing stores
Kim Alvefur <zash@zash.se>
parents: 5024
diff changeset
370 end
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parents: 5024
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371
5103
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diff changeset
372 local function do_remove(path)
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373 local ok, err = os_remove(path);
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diff changeset
374 if not ok and lfs.attributes(path, "mode") then
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parents: 5095
diff changeset
375 return ok, err;
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376 end
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diff changeset
377 return true
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parents: 5095
diff changeset
378 end
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parents: 5095
diff changeset
379
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parents: 6681
diff changeset
380 local function purge(username, host)
5038
242c62ff8e77 util.datamanager: Add function for removing all data belonging to a user
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parents: 5032
diff changeset
381 local host_dir = format("%s/%s/", data_path, encode(host));
6681
0217a04722c7 util.datamanager: Fix traceback from trying to purge when storage is empty or otherwise unaccessible (fixes #496)
Kim Alvefur <zash@zash.se>
parents: 6644
diff changeset
382 local ok, iter, state, var = pcall(lfs.dir, host_dir);
0217a04722c7 util.datamanager: Fix traceback from trying to purge when storage is empty or otherwise unaccessible (fixes #496)
Kim Alvefur <zash@zash.se>
parents: 6644
diff changeset
383 if not ok then
0217a04722c7 util.datamanager: Fix traceback from trying to purge when storage is empty or otherwise unaccessible (fixes #496)
Kim Alvefur <zash@zash.se>
parents: 6644
diff changeset
384 return ok, iter;
0217a04722c7 util.datamanager: Fix traceback from trying to purge when storage is empty or otherwise unaccessible (fixes #496)
Kim Alvefur <zash@zash.se>
parents: 6644
diff changeset
385 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
386 local errs = {};
6681
0217a04722c7 util.datamanager: Fix traceback from trying to purge when storage is empty or otherwise unaccessible (fixes #496)
Kim Alvefur <zash@zash.se>
parents: 6644
diff changeset
387 for file in iter, state, var do
5038
242c62ff8e77 util.datamanager: Add function for removing all data belonging to a user
Kim Alvefur <zash@zash.se>
parents: 5032
diff changeset
388 if lfs.attributes(host_dir..file, "mode") == "directory" then
7673
177d569307fd util.datamanager: Rename variables to avoid name clashes [luacheck]
Kim Alvefur <zash@zash.se>
parents: 7432
diff changeset
389 local store_name = decode(file);
177d569307fd util.datamanager: Rename variables to avoid name clashes [luacheck]
Kim Alvefur <zash@zash.se>
parents: 7432
diff changeset
390 local ok, err = do_remove(getpath(username, host, store_name));
5103
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Kim Alvefur <zash@zash.se>
parents: 5095
diff changeset
391 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
392
7673
177d569307fd util.datamanager: Rename variables to avoid name clashes [luacheck]
Kim Alvefur <zash@zash.se>
parents: 7432
diff changeset
393 local ok, err = do_remove(getpath(username, host, store_name, "list"));
5103
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Kim Alvefur <zash@zash.se>
parents: 5095
diff changeset
394 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
395 end
242c62ff8e77 util.datamanager: Add function for removing all data belonging to a user
Kim Alvefur <zash@zash.se>
parents: 5032
diff changeset
396 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
397 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
398 end
242c62ff8e77 util.datamanager: Add function for removing all data belonging to a user
Kim Alvefur <zash@zash.se>
parents: 5032
diff changeset
399
6777
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Kim Alvefur <zash@zash.se>
parents: 6681
diff changeset
400 return {
5de6b93d0190 util.*: Remove use of module() function, make all module functions local and return them in a table at the end
Kim Alvefur <zash@zash.se>
parents: 6681
diff changeset
401 set_data_path = set_data_path;
5de6b93d0190 util.*: Remove use of module() function, make all module functions local and return them in a table at the end
Kim Alvefur <zash@zash.se>
parents: 6681
diff changeset
402 add_callback = add_callback;
5de6b93d0190 util.*: Remove use of module() function, make all module functions local and return them in a table at the end
Kim Alvefur <zash@zash.se>
parents: 6681
diff changeset
403 remove_callback = remove_callback;
5de6b93d0190 util.*: Remove use of module() function, make all module functions local and return them in a table at the end
Kim Alvefur <zash@zash.se>
parents: 6681
diff changeset
404 getpath = getpath;
5de6b93d0190 util.*: Remove use of module() function, make all module functions local and return them in a table at the end
Kim Alvefur <zash@zash.se>
parents: 6681
diff changeset
405 load = load;
5de6b93d0190 util.*: Remove use of module() function, make all module functions local and return them in a table at the end
Kim Alvefur <zash@zash.se>
parents: 6681
diff changeset
406 store = store;
7002
9ab0d5e69c41 util.datamanager: Add append to public api
Kim Alvefur <zash@zash.se>
parents: 7001
diff changeset
407 append_raw = append;
7929
4017ea6d2599 util.datamanager: Expose atomic_store as store_raw
Kim Alvefur <zash@zash.se>
parents: 7928
diff changeset
408 store_raw = atomic_store;
6777
5de6b93d0190 util.*: Remove use of module() function, make all module functions local and return them in a table at the end
Kim Alvefur <zash@zash.se>
parents: 6681
diff changeset
409 list_append = list_append;
5de6b93d0190 util.*: Remove use of module() function, make all module functions local and return them in a table at the end
Kim Alvefur <zash@zash.se>
parents: 6681
diff changeset
410 list_store = list_store;
5de6b93d0190 util.*: Remove use of module() function, make all module functions local and return them in a table at the end
Kim Alvefur <zash@zash.se>
parents: 6681
diff changeset
411 list_load = list_load;
5de6b93d0190 util.*: Remove use of module() function, make all module functions local and return them in a table at the end
Kim Alvefur <zash@zash.se>
parents: 6681
diff changeset
412 users = users;
5de6b93d0190 util.*: Remove use of module() function, make all module functions local and return them in a table at the end
Kim Alvefur <zash@zash.se>
parents: 6681
diff changeset
413 stores = stores;
5de6b93d0190 util.*: Remove use of module() function, make all module functions local and return them in a table at the end
Kim Alvefur <zash@zash.se>
parents: 6681
diff changeset
414 purge = purge;
5de6b93d0190 util.*: Remove use of module() function, make all module functions local and return them in a table at the end
Kim Alvefur <zash@zash.se>
parents: 6681
diff changeset
415 path_decode = decode;
5de6b93d0190 util.*: Remove use of module() function, make all module functions local and return them in a table at the end
Kim Alvefur <zash@zash.se>
parents: 6681
diff changeset
416 path_encode = encode;
5de6b93d0190 util.*: Remove use of module() function, make all module functions local and return them in a table at the end
Kim Alvefur <zash@zash.se>
parents: 6681
diff changeset
417 };