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comparison util/pubsub.lua @ 3619:291ae816d800

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mod_pubsub: It's aliiiive!
author Matthew Wild <mwild1@gmail.com>
date Sat, 13 Nov 2010 03:16:58 +0000
parents
children 444f965baed8
comparison
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3618:321767e78029 3619:291ae816d800
1 module("pubsub", package.seeall);
2
3 local service = {};
4 local service_mt = { __index = service };
5
6 function new(cb)
7 return setmetatable({ cb = cb or {}, nodes = {} }, service_mt);
8 end
9
10 function service:add_subscription(node, actor, jid)
11 local node_obj = self.nodes[node];
12 if not node_obj then
13 return false, "item-not-found";
14 end
15 node_obj.subscribers[jid] = true;
16 return true;
17 end
18
19 function service:remove_subscription(node, actor, jid)
20 self.nodes[node].subscribers[jid] = nil;
21 return true;
22 end
23
24 function service:publish(node, actor, id, item)
25 local node_obj = self.nodes[node];
26 if not node_obj then
27 node_obj = { name = node, subscribers = {}, config = {} };
28 self.nodes[node] = node_obj;
29 end
30 node_obj.data = item;
31 self.cb.broadcaster(node, node_obj.subscribers, item);
32 return true;
33 end
34
35 return _M;