Mercurial > prosody-modules
view mod_inotify_reload/mod_inotify_reload.lua @ 2155:f24b02e0d706
mod_presence_dedup: Attempt at saving bandwith by deduplicating presence stanzas
author | Kim Alvefur <zash@zash.se> |
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date | Sun, 03 Apr 2016 17:09:03 +0200 |
parents | ab988e98a9f9 |
children | 82207f936f1f |
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-- mod_inotify_reload -- Reloads modules when their files change -- Depends on linotify: https://github.com/hoelzro/linotify module:set_global(); local inotify = require "inotify"; local modulemanager = require "core.modulemanager"; local inh = inotify.init(); local watches = {}; local watch_ids = {}; -- Fake socket object around inotify local inh_conn = { getfd = function () return inh:fileno(); end; dirty = function (self) return false; end; settimeout = function () end; send = function (_, d) return #d, 0; end; close = function () end; receive = function () local events = inh:read(); for _, event in ipairs(events) do local mod = watches[watch_ids[event.wd]]; if mod then local host, name = mod.host, mod.name; module:log("debug", "Reloading changed module mod_%s on %s", name, host); modulemanager.reload(host, name); else module:log("warn", "no watch for %d", event.wd); end end return ""; end }; require "net.server".wrapclient(inh_conn, "inotify", inh:fileno(), { onincoming = function () end, ondisconnect = function () end }, "*a"); function watch_module(name, host, path) local id, err = inh:addwatch(path, inotify.IN_CLOSE_WRITE); if not id then return nil, err; end local k = host.."\0"..name; watches[k] = { id = id, path = path, name = name, host = host }; watch_ids[id] = k; module:log("debug", "Watching %s:%s with id %d", name, host, id); return true; end function unwatch_module(name, host) local k = host.."\0"..name; if not watches[k] then module:log("warn", "Not watching %s:%s", name, host); return nil, "not-watching"; end local id = watches[k].id; local ok, err = inh:rmwatch(id); module:log("info", "Removed watch %d", id); watches[k] = nil; watch_ids[id] = nil; return ok, err; end function module_loaded(event) local host, name = event.host, event.module; local path = modulemanager.get_module(host, name).module.path; if not path then module:log("warn", "Couldn't watch mod_%s, no path", name); return; end if watch_module(name, host, path) then module:log("debug", "Watching mod_%s", name); end end function module_unloaded(event) unwatch_module(event.module, event.host); end function module.add_host(module) module:hook("module-loaded", module_loaded); module:hook("module-unloaded", module_unloaded); end module:hook("module-loaded", module_loaded); module:hook("module-unloaded", module_unloaded);