Mercurial > prosody-modules

annotate mod_inotify_reload/mod_inotify_reload.lua @ 4249:64aa1d9d70ac

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
mod_rest: Catch and log errors in callback promise chain From the code it looks like it should be possible to reply to an error stanza, but it did not. Turns out I was saved by my local developer mode module which throws errors if an attempt is made to create an errror reply to an error stanza. However nothing collects this error from the promise, so all I got was confusion.
author Kim Alvefur <zash@zash.se>
date Sun, 15 Nov 2020 16:25:49 +0100
parents ab988e98a9f9
children 82207f936f1f
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
652
3e6f43ab7e22 mod_inotify_reload: Reload modules when their code changes
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
1 -- mod_inotify_reload
3e6f43ab7e22 mod_inotify_reload: Reload modules when their code changes
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
2 -- Reloads modules when their files change
3e6f43ab7e22 mod_inotify_reload: Reload modules when their code changes
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
3 -- Depends on linotify: https://github.com/hoelzro/linotify
3e6f43ab7e22 mod_inotify_reload: Reload modules when their code changes
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
4
3e6f43ab7e22 mod_inotify_reload: Reload modules when their code changes
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
5 module:set_global();
3e6f43ab7e22 mod_inotify_reload: Reload modules when their code changes
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
6
3e6f43ab7e22 mod_inotify_reload: Reload modules when their code changes
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
7 local inotify = require "inotify";
3e6f43ab7e22 mod_inotify_reload: Reload modules when their code changes
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
8 local modulemanager = require "core.modulemanager";
3e6f43ab7e22 mod_inotify_reload: Reload modules when their code changes
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
9
3e6f43ab7e22 mod_inotify_reload: Reload modules when their code changes
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
10 local inh = inotify.init();
3e6f43ab7e22 mod_inotify_reload: Reload modules when their code changes
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
11
3e6f43ab7e22 mod_inotify_reload: Reload modules when their code changes
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
12 local watches = {};
3e6f43ab7e22 mod_inotify_reload: Reload modules when their code changes
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
13 local watch_ids = {};
3e6f43ab7e22 mod_inotify_reload: Reload modules when their code changes
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
14
3e6f43ab7e22 mod_inotify_reload: Reload modules when their code changes
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
15 -- Fake socket object around inotify
3e6f43ab7e22 mod_inotify_reload: Reload modules when their code changes
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
16 local inh_conn = {
3e6f43ab7e22 mod_inotify_reload: Reload modules when their code changes
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
17 getfd = function () return inh:fileno(); end;
3e6f43ab7e22 mod_inotify_reload: Reload modules when their code changes
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
18 dirty = function (self) return false; end;
3e6f43ab7e22 mod_inotify_reload: Reload modules when their code changes
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
19 settimeout = function () end;
3e6f43ab7e22 mod_inotify_reload: Reload modules when their code changes
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
20 send = function (_, d) return #d, 0; end;
3e6f43ab7e22 mod_inotify_reload: Reload modules when their code changes
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
21 close = function () end;
3e6f43ab7e22 mod_inotify_reload: Reload modules when their code changes
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
22 receive = function ()
3e6f43ab7e22 mod_inotify_reload: Reload modules when their code changes
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
23 local events = inh:read();
3e6f43ab7e22 mod_inotify_reload: Reload modules when their code changes
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
24 for _, event in ipairs(events) do
3e6f43ab7e22 mod_inotify_reload: Reload modules when their code changes
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
25 local mod = watches[watch_ids[event.wd]];
3e6f43ab7e22 mod_inotify_reload: Reload modules when their code changes
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
26 if mod then
3e6f43ab7e22 mod_inotify_reload: Reload modules when their code changes
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
27 local host, name = mod.host, mod.name;
3e6f43ab7e22 mod_inotify_reload: Reload modules when their code changes
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
28 module:log("debug", "Reloading changed module mod_%s on %s", name, host);
3e6f43ab7e22 mod_inotify_reload: Reload modules when their code changes
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
29 modulemanager.reload(host, name);
3e6f43ab7e22 mod_inotify_reload: Reload modules when their code changes
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
30 else
3e6f43ab7e22 mod_inotify_reload: Reload modules when their code changes
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
31 module:log("warn", "no watch for %d", event.wd);
3e6f43ab7e22 mod_inotify_reload: Reload modules when their code changes
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
32 end
3e6f43ab7e22 mod_inotify_reload: Reload modules when their code changes
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
33 end
3e6f43ab7e22 mod_inotify_reload: Reload modules when their code changes
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
34 return "";
3e6f43ab7e22 mod_inotify_reload: Reload modules when their code changes
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
35 end
3e6f43ab7e22 mod_inotify_reload: Reload modules when their code changes
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
36 };
3e6f43ab7e22 mod_inotify_reload: Reload modules when their code changes
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
37 require "net.server".wrapclient(inh_conn, "inotify", inh:fileno(), {
3e6f43ab7e22 mod_inotify_reload: Reload modules when their code changes
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
38 onincoming = function () end, ondisconnect = function () end
3e6f43ab7e22 mod_inotify_reload: Reload modules when their code changes
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
39 }, "*a");
3e6f43ab7e22 mod_inotify_reload: Reload modules when their code changes
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
40
3e6f43ab7e22 mod_inotify_reload: Reload modules when their code changes
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
41 function watch_module(name, host, path)
3e6f43ab7e22 mod_inotify_reload: Reload modules when their code changes
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
42 local id, err = inh:addwatch(path, inotify.IN_CLOSE_WRITE);
3e6f43ab7e22 mod_inotify_reload: Reload modules when their code changes
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
43 if not id then return nil, err; end
3e6f43ab7e22 mod_inotify_reload: Reload modules when their code changes
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
44 local k = host.."\0"..name;
3e6f43ab7e22 mod_inotify_reload: Reload modules when their code changes
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
45 watches[k] = { id = id, path = path, name = name, host = host };
3e6f43ab7e22 mod_inotify_reload: Reload modules when their code changes
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
46 watch_ids[id] = k;
744
ab988e98a9f9 mod_inotify_reload: Add debug logging
Matthew Wild <mwild1@gmail.com>
parents: 652
diff changeset
47 module:log("debug", "Watching %s:%s with id %d", name, host, id);
652
3e6f43ab7e22 mod_inotify_reload: Reload modules when their code changes
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
48 return true;
3e6f43ab7e22 mod_inotify_reload: Reload modules when their code changes
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
49 end
3e6f43ab7e22 mod_inotify_reload: Reload modules when their code changes
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
50
3e6f43ab7e22 mod_inotify_reload: Reload modules when their code changes
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
51 function unwatch_module(name, host)
3e6f43ab7e22 mod_inotify_reload: Reload modules when their code changes
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
52 local k = host.."\0"..name;
3e6f43ab7e22 mod_inotify_reload: Reload modules when their code changes
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
53 if not watches[k] then
744
ab988e98a9f9 mod_inotify_reload: Add debug logging
Matthew Wild <mwild1@gmail.com>
parents: 652
diff changeset
54 module:log("warn", "Not watching %s:%s", name, host);
652
3e6f43ab7e22 mod_inotify_reload: Reload modules when their code changes
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
55 return nil, "not-watching";
3e6f43ab7e22 mod_inotify_reload: Reload modules when their code changes
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
56 end
3e6f43ab7e22 mod_inotify_reload: Reload modules when their code changes
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
57 local id = watches[k].id;
3e6f43ab7e22 mod_inotify_reload: Reload modules when their code changes
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
58 local ok, err = inh:rmwatch(id);
744
ab988e98a9f9 mod_inotify_reload: Add debug logging
Matthew Wild <mwild1@gmail.com>
parents: 652
diff changeset
59 module:log("info", "Removed watch %d", id);
652
3e6f43ab7e22 mod_inotify_reload: Reload modules when their code changes
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
60 watches[k] = nil;
3e6f43ab7e22 mod_inotify_reload: Reload modules when their code changes
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
61 watch_ids[id] = nil;
3e6f43ab7e22 mod_inotify_reload: Reload modules when their code changes
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
62 return ok, err;
3e6f43ab7e22 mod_inotify_reload: Reload modules when their code changes
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
63 end
3e6f43ab7e22 mod_inotify_reload: Reload modules when their code changes
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
64
3e6f43ab7e22 mod_inotify_reload: Reload modules when their code changes
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
65 function module_loaded(event)
3e6f43ab7e22 mod_inotify_reload: Reload modules when their code changes
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
66 local host, name = event.host, event.module;
3e6f43ab7e22 mod_inotify_reload: Reload modules when their code changes
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
67 local path = modulemanager.get_module(host, name).module.path;
3e6f43ab7e22 mod_inotify_reload: Reload modules when their code changes
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
68 if not path then
3e6f43ab7e22 mod_inotify_reload: Reload modules when their code changes
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
69 module:log("warn", "Couldn't watch mod_%s, no path", name);
3e6f43ab7e22 mod_inotify_reload: Reload modules when their code changes
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
70 return;
3e6f43ab7e22 mod_inotify_reload: Reload modules when their code changes
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
71 end
3e6f43ab7e22 mod_inotify_reload: Reload modules when their code changes
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
72 if watch_module(name, host, path) then
3e6f43ab7e22 mod_inotify_reload: Reload modules when their code changes
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
73 module:log("debug", "Watching mod_%s", name);
3e6f43ab7e22 mod_inotify_reload: Reload modules when their code changes
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
74 end
3e6f43ab7e22 mod_inotify_reload: Reload modules when their code changes
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
75 end
3e6f43ab7e22 mod_inotify_reload: Reload modules when their code changes
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
76
3e6f43ab7e22 mod_inotify_reload: Reload modules when their code changes
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
77 function module_unloaded(event)
3e6f43ab7e22 mod_inotify_reload: Reload modules when their code changes
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
78 unwatch_module(event.module, event.host);
3e6f43ab7e22 mod_inotify_reload: Reload modules when their code changes
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
79 end
3e6f43ab7e22 mod_inotify_reload: Reload modules when their code changes
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
80
3e6f43ab7e22 mod_inotify_reload: Reload modules when their code changes
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
81 function module.add_host(module)
3e6f43ab7e22 mod_inotify_reload: Reload modules when their code changes
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
82 module:hook("module-loaded", module_loaded);
3e6f43ab7e22 mod_inotify_reload: Reload modules when their code changes
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
83 module:hook("module-unloaded", module_unloaded);
3e6f43ab7e22 mod_inotify_reload: Reload modules when their code changes
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
84 end
3e6f43ab7e22 mod_inotify_reload: Reload modules when their code changes
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
85
3e6f43ab7e22 mod_inotify_reload: Reload modules when their code changes
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
86 module:hook("module-loaded", module_loaded);
3e6f43ab7e22 mod_inotify_reload: Reload modules when their code changes
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
87 module:hook("module-unloaded", module_unloaded);
3e6f43ab7e22 mod_inotify_reload: Reload modules when their code changes
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
88