prosody-modules
ecfd7aece33b
mod_auto_activate_hosts/mod_auto_activate_hosts.lua

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mod_auto_activate_hosts/mod_auto_activate_hosts.lua @ 5691:ecfd7aece33b

mod_measure_modules: Report module statuses via OpenMetrics Someone in the chat asked about a health check endpoint, which reminded me of mod_http_status, which provides access to module statuses with full details. After that, this idea came about, which seems natural. As noted in the README, it could be used to monitor that critical modules are in fact loaded correctly. As more modules use the status API, the more useful this module and mod_http_status becomes.
author Kim Alvefur <zash@zash.se>
date Fri, 06 Oct 2023 18:34:39 +0200
parent 1818:8b7bca07f5c0
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1 module:set_global();
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2
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3 local hostmanager = require"core.hostmanager";
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4
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5 local array = require "util.array";
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6 local set = require "util.set";
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7 local it = require "util.iterators";
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8 local config = require "core.configmanager";
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10 local function host_not_global(host)
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11 return host ~= "*";
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12 end
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14 local function host_is_enabled(host)
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15 return config.get(host, "enabled") ~= false;
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16 end
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18 function handle_reload()
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19 local new_config = config.getconfig();
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20 local active_hosts = set.new(array.collect(it.keys(prosody.hosts)):filter(host_not_global));
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21 local enabled_hosts = set.new(array.collect(it.keys(new_config)):filter(host_is_enabled):filter(host_not_global));
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22 local need_to_activate = enabled_hosts - active_hosts;
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23 local need_to_deactivate = active_hosts - enabled_hosts;
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25 module:log("debug", "Config reloaded... %d hosts need activating, and %d hosts need deactivating", it.count(need_to_activate), it.count(need_to_deactivate));
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26 module:log("debug", "There are %d enabled and %d active hosts", it.count(enabled_hosts), it.count(active_hosts));
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27 for host in need_to_deactivate do
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28 hostmanager.deactivate(host);
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29 end
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31 -- If the lazy loader is loaded, hosts will get activated when they are needed
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32 if not(getmetatable(prosody.hosts) and getmetatable(prosody.hosts).lazy_loader) then
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33 for host in need_to_activate do
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34 hostmanager.activate(host);
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35 end
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36 end
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37 end
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39 module:hook_global("config-reloaded", handle_reload);