view mod_carbons_copies/mod_carbons_copies.lua @ 4776:13e913471b75

mod_http_admin_api: Ensure freshness of metrics when in manual mode When in manual collection mode, as recommended for Prometheus, collection needs to be triggered manually, or they would be stale, possibly dating from the start of the server. This might vary per metric depending on how and when the metrics are gathered.
author Kim Alvefur <zash@zash.se>
date Thu, 18 Nov 2021 19:26:07 +0100
parents 7dbde05b48a9
children
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-- Send carbons v0 style copies of incoming messages to clients which
-- are not (yet) capable of Message Carbons (XEP-0280).
--
-- This extension integrates with the mod_carbons plugin in such a way
-- that a client capable of Message Carbons will not get a v0 copy.
--
-- This extension can be enabled for all users by default by setting
-- carbons_copies_default = true.
--
-- Alternatively or additionally setting carbons_copies_adhoc = true
-- will allow the user to enable or disable copies through Adhoc
-- commands.
--
-- Copyright (C) 2012 Michael Holzt
--
-- This file is MIT/X11 licensed.

local jid_split = require "util.jid".split;
local dm_load = require "util.datamanager".load;
local dm_store = require "util.datamanager".store;
local adhoc_new = module:require "adhoc".new;
local xmlns_carbons_v0 = "urn:xmpp:carbons:0";
local storename = "mod_carbons_copies";

local function toggle_copies(data, on)
	local username, hostname, resource = jid_split(data.from);
	dm_store(username, hostname, storename, { enabled = on });
end

local function adhoc_enable_copies(self, data, state)
	toggle_copies(data, true);
	return { info = "Copies are enabled for you now.\nPlease restart/reconnect clients.", status = "completed" };
end

local function adhoc_disable_copies(self, data, state)
	toggle_copies(data, false);
	return { info = "Copies are disabled for you now.\nPlease restart/reconnect clients.", status = "completed" };
end

module:hook("resource-bind", function(event)
	local session = event.session;
	local username, hostname, resource = jid_split(session.full_jid);

	local store = dm_load(username, hostname, storename) or
		{ enabled =
		module:get_option_boolean("carbons_copies_default") };

	if store.enabled then
		session.want_carbons = xmlns_carbons_v0;
		module:log("debug", "%s enabling copies", session.full_jid);
	end
end);

-- Adhoc-Support
if module:get_option_boolean("carbons_copies_adhoc") then
	local enable_desc = adhoc_new("Carbons: Enable Copies",
		"mod_carbons_copies#enable", adhoc_enable_copies);
	local disable_desc = adhoc_new("Carbons: Disable Copies",
		"mod_carbons_copies#disable", adhoc_disable_copies);

	module:add_item("adhoc", enable_desc);
	module:add_item("adhoc", disable_desc);
end