prosody
39a2e8ff0b0f
util/datamanager.lua

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util/datamanager.lua @ 2626:39a2e8ff0b0f

Backed out changeset cb1f9266130b: better way to achieve this to be committed Real Soon Now.
author Matthew Wild <mwild1@gmail.com>
date Sat, 13 Feb 2010 15:34:22 +0000
parent 2583:cb1f9266130b
child 2925:692b3c6c5bd2
comparison
equal deleted inserted replaced
2583:cb1f9266130b 2626:39a2e8ff0b0f
58 local data_path = "data"; 58 local data_path = "data";
59 local callbacks = {}; 59 local callbacks = {};
60 60
61 ------- API ------------- 61 ------- API -------------
62 62
63 local _set_data_path;
64 function set_data_path(path) 63 function set_data_path(path)
65 if _set_data_path then return _set_data_path(path); end
66 log("debug", "Setting data path to: %s", path); 64 log("debug", "Setting data path to: %s", path);
67 data_path = path; 65 data_path = path;
68 end 66 end
69 67
70 local function callback(username, host, datastore, data) 68 local function callback(username, host, datastore, data)
73 if username == false then break; end 71 if username == false then break; end
74 end 72 end
75 73
76 return username, host, datastore, data; 74 return username, host, datastore, data;
77 end 75 end
78 local _add_callback;
79 function add_callback(func) 76 function add_callback(func)
80 if _add_callback then return _add_callback(func); end
81 if not callbacks[func] then -- Would you really want to set the same callback more than once? 77 if not callbacks[func] then -- Would you really want to set the same callback more than once?
82 callbacks[func] = true; 78 callbacks[func] = true;
83 callbacks[#callbacks+1] = func; 79 callbacks[#callbacks+1] = func;
84 return true; 80 return true;
85 end 81 end
86 end 82 end
87 local _remove_callback;
88 function remove_callback(func) 83 function remove_callback(func)
89 if _remove_callback then return _remove_callback(func); end
90 if callbacks[func] then 84 if callbacks[func] then
91 for i, f in ipairs(callbacks) do 85 for i, f in ipairs(callbacks) do
92 if f == func then 86 if f == func then
93 callbacks[i] = nil; 87 callbacks[i] = nil;
94 callbacks[f] = nil; 88 callbacks[f] = nil;
96 end 90 end
97 end 91 end
98 end 92 end
99 end 93 end
100 94
101 local _getpath;
102 function getpath(username, host, datastore, ext, create) 95 function getpath(username, host, datastore, ext, create)
103 if _getpath then return _getpath(username, host, datastore, ext, create); end
104 ext = ext or "dat"; 96 ext = ext or "dat";
105 host = (host and encode(host)) or "_global"; 97 host = (host and encode(host)) or "_global";
106 username = username and encode(username); 98 username = username and encode(username);
107 if username then 99 if username then
108 if create then mkdir(mkdir(mkdir(data_path).."/"..host).."/"..datastore); end 100 if create then mkdir(mkdir(mkdir(data_path).."/"..host).."/"..datastore); end
114 if create then mkdir(data_path); end 106 if create then mkdir(data_path); end
115 return format("%s/%s.%s", data_path, datastore, ext); 107 return format("%s/%s.%s", data_path, datastore, ext);
116 end 108 end
117 end 109 end
118 110
119 local _load;
120 function load(username, host, datastore) 111 function load(username, host, datastore)
121 if _load then return _load(username, host, datastore); end
122 local data, ret = loadfile(getpath(username, host, datastore)); 112 local data, ret = loadfile(getpath(username, host, datastore));
123 if not data then 113 if not data then
124 log("debug", "Failed to load "..datastore.." storage ('"..ret.."') for user: "..(username or "nil").."@"..(host or "nil")); 114 log("debug", "Failed to load "..datastore.." storage ('"..ret.."') for user: "..(username or "nil").."@"..(host or "nil"));
125 return nil; 115 return nil;
126 end 116 end
131 return nil; 121 return nil;
132 end 122 end
133 return ret; 123 return ret;
134 end 124 end
135 125
136 local _store;
137 function store(username, host, datastore, data) 126 function store(username, host, datastore, data)
138 if _store then return _store(username, host, datastore, data); end
139 if not data then 127 if not data then
140 data = {}; 128 data = {};
141 end 129 end
142 130
143 username, host, datastore, data = callback(username, host, datastore, data); 131 username, host, datastore, data = callback(username, host, datastore, data);
161 -- we write data even when we are deleting because lua doesn't have a 149 -- we write data even when we are deleting because lua doesn't have a
162 -- platform independent way of checking for non-exisitng files 150 -- platform independent way of checking for non-exisitng files
163 return true; 151 return true;
164 end 152 end
165 153
166 local _list_append;
167 function list_append(username, host, datastore, data) 154 function list_append(username, host, datastore, data)
168 if _list_append then return _list_append(username, host, datastore, data); end
169 if not data then return; end 155 if not data then return; end
170 if callback(username, host, datastore) == false then return true; end 156 if callback(username, host, datastore) == false then return true; end
171 -- save the datastore 157 -- save the datastore
172 local f, msg = io_open(getpath(username, host, datastore, "list", true), "a+"); 158 local f, msg = io_open(getpath(username, host, datastore, "list", true), "a+");
173 if not f then 159 if not f then
179 f:write(");\n"); 165 f:write(");\n");
180 f:close(); 166 f:close();
181 return true; 167 return true;
182 end 168 end
183 169
184 local _list_store;
185 function list_store(username, host, datastore, data) 170 function list_store(username, host, datastore, data)
186 if _list_store then return _list_store(username, host, datastore, data); end
187 if not data then 171 if not data then
188 data = {}; 172 data = {};
189 end 173 end
190 if callback(username, host, datastore) == false then return true; end 174 if callback(username, host, datastore) == false then return true; end
191 -- save the datastore 175 -- save the datastore
207 -- we write data even when we are deleting because lua doesn't have a 191 -- we write data even when we are deleting because lua doesn't have a
208 -- platform independent way of checking for non-exisitng files 192 -- platform independent way of checking for non-exisitng files
209 return true; 193 return true;
210 end 194 end
211 195
212 local _list_load;
213 function list_load(username, host, datastore) 196 function list_load(username, host, datastore)
214 if _list_load then return _list_load(username, host, datastore); end
215 local data, ret = loadfile(getpath(username, host, datastore, "list")); 197 local data, ret = loadfile(getpath(username, host, datastore, "list"));
216 if not data then 198 if not data then
217 log("debug", "Failed to load "..datastore.." storage ('"..ret.."') for user: "..(username or "nil").."@"..(host or "nil")); 199 log("debug", "Failed to load "..datastore.." storage ('"..ret.."') for user: "..(username or "nil").."@"..(host or "nil"));
218 return nil; 200 return nil;
219 end 201 end
225 return nil; 207 return nil;
226 end 208 end
227 return items; 209 return items;
228 end 210 end
229 211
230 function set(t)
231 _set_data_path = t.set_data_path;
232 _add_callback = t.add_callback;
233 _remove_callback = t.remove_callback;
234 _getpath = t.getpath;
235 _load = t.load;
236 _store = t.store;
237 _list_append = t.list_append;
238 _list_store = t.list_store;
239 _list_load = t.list_load;
240 end
241 function get()
242 return {
243 set_data_path = _set_data_path;
244 add_callback = _add_callback;
245 remove_callback = _remove_callback;
246 getpath = _getpath;
247 load = _load;
248 store = _store;
249 list_append = _list_append;
250 list_store = _list_store;
251 list_load = _list_load;
252 };
253 end
254
255 return _M; 212 return _M;