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annotate mod_host_status_heartbeat/mod_host_status_heartbeat.lua @ 5668:ecfd7aece33b

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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
parents 7f955f92bbbb
children
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5fcf9d558250 Three new modules: mod_host_status_check, mod_host_status_heartbeat and mod_http_host_status_check
Matthew Wild <mwild1@gmail.com>
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1 local st = require "util.stanza";
5fcf9d558250 Three new modules: mod_host_status_check, mod_host_status_heartbeat and mod_http_host_status_check
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2 local time = require "socket".gettime;
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4 local heartbeat_interval = module:get_option_number("status_check_heartbeat_interval", 5);
5fcf9d558250 Three new modules: mod_host_status_check, mod_host_status_heartbeat and mod_http_host_status_check
Matthew Wild <mwild1@gmail.com>
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5 local heartbeat_mode = module:get_option_string("status_check_heartbeat_mode", "remote");
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Matthew Wild <mwild1@gmail.com>
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7 local local_heartbeats = module:shared("/*/host_status_check/heartbeats");
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9 local heartbeat_methods = {
5fcf9d558250 Three new modules: mod_host_status_check, mod_host_status_heartbeat and mod_http_host_status_check
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10 ["local"] = function()
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11 module:log("debug", "Local heartbeat");
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12 local_heartbeats[module.host] = time();
5fcf9d558250 Three new modules: mod_host_status_check, mod_host_status_heartbeat and mod_http_host_status_check
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13 return heartbeat_interval;
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14 end;
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16 ["remote"] = function ()
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17 module:fire_event("route/remote", {
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18 origin = prosody.hosts[module.host];
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19 stanza = st.stanza("heartbeat", { xmlns = "xmpp:prosody.im/heartbeat" });
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20 });
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21 return heartbeat_interval;
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22 end;
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23 }
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25 local send_heartbeat = assert(heartbeat_methods[heartbeat_mode], "Unknown heartbeat_mode: "..heartbeat_mode);
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27 module:add_timer(0, send_heartbeat);