Software /
code /
prosody
File
util/helpers.lua @ 12296:49ebac8a5260
prosody: Expose main thread on the 'prosody' global
To allow running things in it.
author | Kim Alvefur <zash@zash.se> |
---|---|
date | Wed, 06 Oct 2021 14:49:26 +0200 |
parent | 11059:ad89e3cc67b6 |
child | 12975:d10957394a3c |
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-- Prosody IM -- Copyright (C) 2008-2010 Matthew Wild -- Copyright (C) 2008-2010 Waqas Hussain -- -- This project is MIT/X11 licensed. Please see the -- COPYING file in the source package for more information. -- local debug = require "util.debug"; -- Helper functions for debugging local log = require "util.logger".init("util.debug"); local function log_events(events, name, logger) local f = events.fire_event; if not f then error("Object does not appear to be a util.events object"); end logger = logger or log; name = name or tostring(events); function events.fire_event(event, ...) logger("debug", "%s firing event: %s", name, event); return f(event, ...); end local function event_handler_hook(handler, event_name, event_data) logger("debug", "calling handler for %s: %s", event_name, handler); local ok, ret = pcall(handler, event_data); if not ok then logger("error", "error in event handler %s: %s", handler, ret); error(ret); end if ret ~= nil then logger("debug", "event chain ended for %s by %s with result: %s", event_name, handler, ret); end return ret; end events.set_debug_hook(event_handler_hook); events[events.fire_event] = f; return events; end local function revert_log_events(events) events.fire_event, events[events.fire_event] = events[events.fire_event], nil; -- :)) events.set_debug_hook(nil); end local function log_host_events(host) return log_events(prosody.hosts[host].events, host); end local function revert_log_host_events(host) return revert_log_events(prosody.hosts[host].events); end local function show_events(events, specific_event) local event_handlers = events._handlers; local events_array = {}; local event_handler_arrays = {}; for event, priorities in pairs(events._event_map) do local handlers = event_handlers[event]; if handlers and (event == specific_event or not specific_event) then table.insert(events_array, event); local handler_strings = {}; for i, handler in ipairs(handlers) do local upvals = debug.string_from_var_table(debug.get_upvalues_table(handler)); handler_strings[i] = " "..(priorities[handler] or "?")..": "..tostring(handler)..(upvals and ("\n "..upvals) or ""); end event_handler_arrays[event] = handler_strings; end end table.sort(events_array); local i = 1; while i <= #events_array do local handlers = event_handler_arrays[events_array[i]]; for j=#handlers, 1, -1 do table.insert(events_array, i+1, handlers[j]); end if i > 1 then events_array[i] = "\n"..events_array[i]; end i = i + #handlers + 1 end return table.concat(events_array, "\n"); end local function get_upvalue(f, get_name) local i, name, value = 0; repeat i = i + 1; name, value = debug.getupvalue(f, i); until name == get_name or name == nil; return value; end return { log_host_events = log_host_events; revert_log_host_events = revert_log_host_events; log_events = log_events; revert_log_events = revert_log_events; show_events = show_events; get_upvalue = get_upvalue; };