annotate mod_log_mark/mod_log_mark.lua @ 5668: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
parents 7be158b3376f
children
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d15df55f0a63 mod_log_mark: Make a global module (should only be loaded once anyways)
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1 module:set_global();
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2
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02390829df1a mod_log_mark: Module that sends a line to the log once per minute
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3 local log = _G.log;
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4
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7be158b3376f mod_log_mark: Try to prevent timer drift
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5 module:add_timer(60-os.date("%S"), function (now)
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02390829df1a mod_log_mark: Module that sends a line to the log once per minute
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6 log("info", "-- MARK --");
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7 return 90 - ((now + 30) % 60);
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02390829df1a mod_log_mark: Module that sends a line to the log once per minute
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8 end);