Mercurial > prosody-modules
view mod_debug_traceback/mod_debug_traceback.lua @ 4919:347e34c3c7e2
mod_rest: Improve error handling during format mapping
Prevents e.g. a nil, error return going directly into e.g. json
encoding, resulting in "null" being returned.
Further handling improvements down the line is needed.
author | Kim Alvefur <zash@zash.se> |
---|---|
date | Thu, 07 Apr 2022 17:49:08 +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