File

mod_debug_traceback/mod_debug_traceback.lua @ 5551:8bfcedd93a72

mod_rest: List all error conditions in OpenAPI spec These are not handled by datamanager but by util.stanza and util.error, so they are not represented in the JSON schema file.
author Kim Alvefur <zash@zash.se>
date Sat, 17 Jun 2023 16:26:33 +0200
parent 4222:02292b892fce
child 5874:0358fcf14cd6
line wrap: on
line source

module:set_global();

local traceback = require "util.debug".traceback;
local pposix = require "util.pposix";
local os_date = os.date;
local render_filename = require "util.interpolation".new("%b{}", function (s) return s; end, {
	yyyymmdd = function (t)
		return os_date("%Y%m%d", t);
	end;
	hhmmss = function (t)
		return os_date("%H%M%S", t);
	end;
});

local count = 0;

local function get_filename(filename_template)
	filename_template = filename_template;
	return render_filename(filename_template, {
		paths = prosody.paths;
		pid = pposix.getpid();
		count = count;
		time = os.time();
	});
end

local default_filename_template = "{paths.data}/traceback-{pid}-{count}.log";
local filename_template = module:get_option_string("debug_traceback_filename", default_filename_template);
local signal_name = module:get_option_string("debug_traceback_signal", "SIGUSR1");

function dump_traceback()
	module:log("info", "Received %s, writing traceback", signal_name);

	local tb = traceback();
	module:fire_event("debug_traceback/triggered", { traceback = tb });

	local f, err = io.open(get_filename(filename_template), "a+");
	if not f then
		module:log("error", "Unable to write traceback: %s", err);
		return;
	end
	f:write("-- Traceback generated at ", os.date("%b %d %H:%M:%S"), " --\n");
	f:write(tb, "\n");
	f:write("-- End of traceback --\n");
	f:close();
	count = count + 1;
end

local mod_posix = module:depends("posix");
if rawget(mod_posix, "features") and mod_posix.features.signal_events then
	module:hook("signal/"..signal_name, dump_traceback);
else
	require"util.signal".signal(signal_name, dump_traceback);
end