view mod_measure_stanza_counts/mod_measure_stanza_counts.lua @ 4249:64aa1d9d70ac

mod_rest: Catch and log errors in callback promise chain From the code it looks like it should be possible to reply to an error stanza, but it did not. Turns out I was saved by my local developer mode module which throws errors if an attempt is made to create an errror reply to an error stanza. However nothing collects this error from the promise, so all I got was confusion.
author Kim Alvefur <zash@zash.se>
date Sun, 15 Nov 2020 16:25:49 +0100
parents 512405077709
children 33b1b6ff23d8
line wrap: on
line source

module:set_global()

local filters = require"util.filters";

local stanza_kinds = { message = true, presence = true, iq = true };

local function rate(measures, dir)
	return function (stanza, session)
		measures[dir]();
		measures[dir .. "_" .. session.type]();
		if stanza.attr and not stanza.attr.xmlns and stanza_kinds[stanza.name] then
			measures[dir .. "_" .. session.type .. "_" .. stanza.name]();
		end
		return stanza;
	end
end

local measures = setmetatable({}, {
	__index = function (t, name)
		local m = module:measure(name, "rate");
		t[name] = m;
		return m;
	end
});

local function measure_stanza_counts(session)
	filters.add_filter(session, "stanzas/in",  rate(measures, "incoming"));
	filters.add_filter(session, "stanzas/out", rate(measures, "outgoing"));
end

filters.add_filter_hook(measure_stanza_counts);