annotate mod_host_status_heartbeat/mod_host_status_heartbeat.lua @ 4776:13e913471b75

mod_http_admin_api: Ensure freshness of metrics when in manual mode When in manual collection mode, as recommended for Prometheus, collection needs to be triggered manually, or they would be stale, possibly dating from the start of the server. This might vary per metric depending on how and when the metrics are gathered.
author Kim Alvefur <zash@zash.se>
date Thu, 18 Nov 2021 19:26:07 +0100
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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7 local local_heartbeats = module:shared("/*/host_status_check/heartbeats");
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5fcf9d558250 Three new modules: mod_host_status_check, mod_host_status_heartbeat and mod_http_host_status_check
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9 local heartbeat_methods = {
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10 ["local"] = function()
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11 module:log("debug", "Local heartbeat");
5fcf9d558250 Three new modules: mod_host_status_check, mod_host_status_heartbeat and mod_http_host_status_check
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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;
5fcf9d558250 Three new modules: mod_host_status_check, mod_host_status_heartbeat and mod_http_host_status_check
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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];
5fcf9d558250 Three new modules: mod_host_status_check, mod_host_status_heartbeat and mod_http_host_status_check
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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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5fcf9d558250 Three new modules: mod_host_status_check, mod_host_status_heartbeat and mod_http_host_status_check
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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);