view mod_inotify_reload/mod_inotify_reload.lua @ 5553:67152838afbc

mod_http_oauth2: Improve error messages for URI properties Since there are separate validation checks for URI properties, including that they should use https, with better and more specific error reporting. Reverts 'luaPattern' to 'pattern' which is not currently supported by util.jsonschema, but allows anything that retrieves the schema over http to validate against it, should they wish to do so.
author Kim Alvefur <zash@zash.se>
date Sat, 17 Jun 2023 18:15:00 +0200
parents 82207f936f1f
children
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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 = {};

require"net.server".watchfd(inh:fileno(), 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
end);

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);