prosody
87c71e882437
util/broadcast.lua

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Software / code / prosody

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util/broadcast.lua @ 1528:87c71e882437

util.pubsub -> util.broadcast
author Matthew Wild <mwild1@gmail.com>
date Sat, 11 Jul 2009 15:16:18 +0100
parent 1522:util/pubsub.lua@569d58d21612
child 2923:b7049746bd29
comparison
equal deleted inserted replaced
1527:47729fa90a6c 1528:87c71e882437
1 -- Prosody IM
2 -- Copyright (C) 2008-2009 Matthew Wild
3 -- Copyright (C) 2008-2009 Waqas Hussain
4 --
5 -- This project is MIT/X11 licensed. Please see the
6 -- COPYING file in the source package for more information.
7 --
8
9
10 local ipairs, pairs, setmetatable, type =
11 ipairs, pairs, setmetatable, type;
12
13 module "pubsub"
14
15 local pubsub_node_mt = { __index = _M };
16
17 function new_node(name)
18 return setmetatable({ name = name, subscribers = {} }, pubsub_node_mt);
19 end
20
21 function set_subscribers(node, subscribers_list, list_type)
22 local subscribers = node.subscribers;
23
24 if list_type == "array" then
25 for _, jid in ipairs(subscribers_list) do
26 if not subscribers[jid] then
27 node:add_subscriber(jid);
28 end
29 end
30 elseif (not list_type) or list_type == "set" then
31 for jid in pairs(subscribers_list) do
32 if type(jid) == "string" then
33 node:add_subscriber(jid);
34 end
35 end
36 end
37 end
38
39 function get_subscribers(node)
40 return node.subscribers;
41 end
42
43 function publish(node, item, dispatcher, data)
44 local subscribers = node.subscribers;
45 for i = 1,#subscribers do
46 item.attr.to = subscribers[i];
47 dispatcher(data, item);
48 end
49 end
50
51 function add_subscriber(node, jid)
52 local subscribers = node.subscribers;
53 if not subscribers[jid] then
54 local space = #subscribers;
55 subscribers[space] = jid;
56 subscribers[jid] = space;
57 end
58 end
59
60 function remove_subscriber(node, jid)
61 local subscribers = node.subscribers;
62 if subscribers[jid] then
63 subscribers[subscribers[jid]] = nil;
64 subscribers[jid] = nil;
65 end
66 end
67
68 return _M;