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