annotate mod_statistics_statsd/mod_statistics_statsd.lua @ 4542:fb4a50bf60f1

mod_prometheus: Invoke stats collection if in 'manual' mode Since 10d13e0554f9 a special value for statistics_interval "manual" exists, where a module is expected to invoke processing in connection to collection of stats. This makes internal collection and exporting to Prometheus happens at the same time with no chance of timers getting out of sync.
author Kim Alvefur <zash@zash.se>
date Tue, 13 Apr 2021 23:53:53 +0200
parents 98a186874806
children
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b59812aaabad mod_statistics_statsd: Module for pushing from util.statistics (0.10) to statsd
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1 local statsmanager = require "core.statsmanager";
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2 local udp = require "socket".udp();
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4 local server = module:get_option_string("statsd_server_ip", "127.0.0.1");
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5 local server_port = module:get_option_number("statsd_server_port", 8124);
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6 local max_datagram_size = module:get_option_number("statds_packet_size", 512);
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8 function push_stats(stats, meta)
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9 local metric_strings, remaining_bytes = {}, max_datagram_size;
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10 for name, value in pairs(stats) do
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11 local value_meta = meta[name];
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12 module:log("warn", "%s %s", name, tostring(value_meta));
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13 --if not value_meta then
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14 -- Simple value (gauge)
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15 local metric_string = ("%s|%d|g"):format(name, value);
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16 if #metric_string > remaining_bytes then
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17 udp:sendto(table.concat(metric_strings, "\n"), server, server_port);
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18 metric_strings, remaining_bytes = {}, max_datagram_size;
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19 end
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20 table.insert(metric_strings, metric_string);
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21 remaining_bytes = remaining_bytes - (#metric_string + 1); -- +1 for newline
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22 --end
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23 end
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24 if #metric_strings > 0 then
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25 udp:sendto(table.concat(metric_strings, "\n"), server, server_port);
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26 end
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27 end
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29 module:hook_global("stats-updated", function (event)
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30 push_stats(event.changed_stats, event.stats_extra);
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31 end);
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33 function module.load()
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34 local all, changed, extra = statsmanager.get_stats();
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35 push_stats(all, extra);
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36 end