view mod_debug_traceback/mod_debug_traceback.lua @ 4974:807007913f67

mod_log_json: Prefer native Lua table.pack over Prosody util.table one Prosody is removing support for Lua 5.1, which was the reason for util.table.pack to exist in the first place, since Lua 5.2+ provides table.pack. In prosody rev 5eaf77114fdb everything was switched over to use table.pack, opening the door for removing util.table.pack at some point. This change here is to prepare for that future eventuality.
author Kim Alvefur <zash@zash.se>
date Mon, 11 Jul 2022 20:08:41 +0200
parents 02292b892fce
children 0358fcf14cd6
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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