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annotate mod_inotify_reload/mod_inotify_reload.lua @ 5442:7480dde4cd2e

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mod_auth_oauth_external: Stub not implemented auth module methods Not providing some of these may trigger errors on use, which is something that would be nice to fix on the Prosody side, one day.
author Kim Alvefur <zash@zash.se>
date Wed, 10 May 2023 19:11:25 +0200
parents 82207f936f1f
children
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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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14
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15 require"net.server".watchfd(inh:fileno(), function()
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16 local events = inh:read();
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17 for _, event in ipairs(events) do
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18 local mod = watches[watch_ids[event.wd]];
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19 if mod then
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20 local host, name = mod.host, mod.name;
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21 module:log("debug", "Reloading changed module mod_%s on %s", name, host);
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22 modulemanager.reload(host, name);
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23 else
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24 module:log("warn", "no watch for %d", event.wd);
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25 end
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26 end
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27 end);
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28
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29 function watch_module(name, host, path)
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30 local id, err = inh:addwatch(path, inotify.IN_CLOSE_WRITE);
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31 if not id then return nil, err; end
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32 local k = host.."\0"..name;
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33 watches[k] = { id = id, path = path, name = name, host = host };
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34 watch_ids[id] = k;
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35 module:log("debug", "Watching %s:%s with id %d", name, host, id);
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36 return true;
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37 end
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38
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39 function unwatch_module(name, host)
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40 local k = host.."\0"..name;
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41 if not watches[k] then
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42 module:log("warn", "Not watching %s:%s", name, host);
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43 return nil, "not-watching";
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44 end
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45 local id = watches[k].id;
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46 local ok, err = inh:rmwatch(id);
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47 module:log("info", "Removed watch %d", id);
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48 watches[k] = nil;
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49 watch_ids[id] = nil;
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50 return ok, err;
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51 end
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52
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53 function module_loaded(event)
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54 local host, name = event.host, event.module;
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55 local path = modulemanager.get_module(host, name).module.path;
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56 if not path then
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57 module:log("warn", "Couldn't watch mod_%s, no path", name);
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58 return;
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59 end
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60 if watch_module(name, host, path) then
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61 module:log("debug", "Watching mod_%s", name);
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62 end
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63 end
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64
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65 function module_unloaded(event)
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66 unwatch_module(event.module, event.host);
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67 end
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69 function module.add_host(module)
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70 module:hook("module-loaded", module_loaded);
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71 module:hook("module-unloaded", module_unloaded);
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72 end
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74 module:hook("module-loaded", module_loaded);
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75 module:hook("module-unloaded", module_unloaded);
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