module("pubsub", package.seeall); local service = {}; local service_mt = { __index = service }; function new(cb) return setmetatable({ cb = cb or {}, nodes = {} }, service_mt); end function service:add_subscription(node, actor, jid) local node_obj = self.nodes[node]; if not node_obj then return false, "item-not-found"; end node_obj.subscribers[jid] = true; return true; end function service:remove_subscription(node, actor, jid) self.nodes[node].subscribers[jid] = nil; return true; end function service:get_subscription(node, actor, jid) local node_obj = self.nodes[node]; if node_obj then return node_obj.subscribers[jid]; end end function service:publish(node, actor, id, item) local node_obj = self.nodes[node]; if not node_obj then node_obj = { name = node, subscribers = {}, config = {} }; self.nodes[node] = node_obj; end node_obj.data = item; self.cb.broadcaster(node, node_obj.subscribers, item); return true; end return _M;