Mercurial > prosody-modules

annotate mod_inotify_reload/mod_inotify_reload.lua @ 5173:460f78654864

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mod_muc_rtbl: also filter messages This was a bit tricky because we don't want to run the JIDs through SHA256 on each message. Took a while to come up with this simple plan of just caching the SHA256 of the JIDs on the occupants. This will leave some dirt in the occupants after unloading the module, but that should be ok; once they cycle the room, the hashes will be gone. This is direly needed, otherwise, there is a tight race between the moderation activities and the actors joining the room.
author Jonas Schäfer <jonas@wielicki.name>
date Tue, 21 Feb 2023 21:37:27 +0100
parents ab988e98a9f9
children 82207f936f1f
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1 -- mod_inotify_reload
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2 -- Reloads modules when their files change
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3 -- Depends on linotify: https://github.com/hoelzro/linotify
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4
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5 module:set_global();
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6
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7 local inotify = require "inotify";
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8 local modulemanager = require "core.modulemanager";
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9
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10 local inh = inotify.init();
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11
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12 local watches = {};
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13 local watch_ids = {};
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15 -- Fake socket object around inotify
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16 local inh_conn = {
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17 getfd = function () return inh:fileno(); end;
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18 dirty = function (self) return false; end;
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19 settimeout = function () end;
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20 send = function (_, d) return #d, 0; end;
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21 close = function () end;
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22 receive = function ()
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23 local events = inh:read();
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24 for _, event in ipairs(events) do
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25 local mod = watches[watch_ids[event.wd]];
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26 if mod then
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27 local host, name = mod.host, mod.name;
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28 module:log("debug", "Reloading changed module mod_%s on %s", name, host);
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29 modulemanager.reload(host, name);
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30 else
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31 module:log("warn", "no watch for %d", event.wd);
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32 end
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33 end
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34 return "";
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35 end
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36 };
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37 require "net.server".wrapclient(inh_conn, "inotify", inh:fileno(), {
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38 onincoming = function () end, ondisconnect = function () end
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39 }, "*a");
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40
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41 function watch_module(name, host, path)
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42 local id, err = inh:addwatch(path, inotify.IN_CLOSE_WRITE);
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43 if not id then return nil, err; end
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44 local k = host.."\0"..name;
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45 watches[k] = { id = id, path = path, name = name, host = host };
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46 watch_ids[id] = k;
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47 module:log("debug", "Watching %s:%s with id %d", name, host, id);
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48 return true;
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49 end
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50
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51 function unwatch_module(name, host)
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52 local k = host.."\0"..name;
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53 if not watches[k] then
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54 module:log("warn", "Not watching %s:%s", name, host);
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55 return nil, "not-watching";
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56 end
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57 local id = watches[k].id;
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58 local ok, err = inh:rmwatch(id);
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59 module:log("info", "Removed watch %d", id);
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60 watches[k] = nil;
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61 watch_ids[id] = nil;
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62 return ok, err;
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63 end
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64
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65 function module_loaded(event)
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66 local host, name = event.host, event.module;
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67 local path = modulemanager.get_module(host, name).module.path;
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68 if not path then
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69 module:log("warn", "Couldn't watch mod_%s, no path", name);
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70 return;
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71 end
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72 if watch_module(name, host, path) then
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73 module:log("debug", "Watching mod_%s", name);
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74 end
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75 end
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76
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77 function module_unloaded(event)
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78 unwatch_module(event.module, event.host);
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79 end
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80
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81 function module.add_host(module)
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82 module:hook("module-loaded", module_loaded);
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83 module:hook("module-unloaded", module_unloaded);
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84 end
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85
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86 module:hook("module-loaded", module_loaded);
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87 module:hook("module-unloaded", module_unloaded);
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88