plugins/pep.lua

Thu, 23 Mar 2023 18:56:32 +0000

author
Matthew Wild <mwild1@gmail.com>
date
Thu, 23 Mar 2023 18:56:32 +0000
changeset 485
c9a144591649
parent 470
e690759c5072
permissions
-rw-r--r--

component: Avoid adding to the global stream metatable

This allows component and client connections to be made side-by-side.
Previous to this change, loading this connection module would break the
ability to make client connections, due to overriding stream methods such as
:reopen() and :reset().

A next step would be to share the methods that the two connection modules have
in common.

local verse = require "verse";

local xmlns_pubsub = "http://jabber.org/protocol/pubsub";
local xmlns_pubsub_event = xmlns_pubsub.."#event";

function verse.plugins.pep(stream)
	stream:add_plugin("disco");
	stream:add_plugin("pubsub");
	stream.pep = {};

	stream:hook("pubsub/event", function(event)
		return stream:event("pep/"..event.node, { from = event.from, id = event.item.attr.id, item = event.item.tags[1] } );
	end);

	function stream:hook_pep(node, callback, priority)
		local handlers = stream.events._handlers["pep/"..node];
		if not(handlers) or #handlers == 0 then
			stream:add_disco_feature(node.."+notify");
		end
		stream:hook("pep/"..node, callback, priority);
	end

	function stream:unhook_pep(node, callback)
		stream:unhook("pep/"..node, callback);
		local handlers = stream.events._handlers["pep/"..node];
		if not(handlers) or #handlers == 0 then
			stream:remove_disco_feature(node.."+notify");
		end
	end

	function stream:publish_pep(item, node, id)
		return stream.pubsub:service(nil):node(node or item.attr.xmlns):publish(id or "current", nil, item)
	end
end

mercurial