prosody
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doc/doap.xml @ 11523:5f15ab7c6ae5

Statistics: Rewrite statistics backends to use OpenMetrics The metric subsystem of Prosody has had some shortcomings from the perspective of the current state-of-the-art in metric observability. The OpenMetrics standard [0] is a formalization of the data model (and serialization format) of the well-known and widely-used Prometheus [1] software stack. The previous stats subsystem of Prosody did not map well to that format (see e.g. [2] and [3]); the key reason is that it was trying to do too much math on its own ([2]) while lacking first-class support for "families" of metrics ([3]) and structured metric metadata (despite the `extra` argument to metrics, there was no standard way of representing common things like "tags" or "labels"). Even though OpenMetrics has grown from the Prometheus world of monitoring, it maps well to other popular monitoring stacks such as: - InfluxDB (labels can be mapped to tags and fields as necessary) - Carbon/Graphite (labels can be attached to the metric name with dot-separation) - StatsD (see graphite when assuming that graphite is used as backend, which is the default) The util.statsd module has been ported to use the OpenMetrics model as a proof of concept. An implementation which exposes the util.statistics backend data as Prometheus metrics is ready for publishing in prosody-modules (most likely as mod_openmetrics_prometheus to avoid breaking existing 0.11 deployments). At the same time, the previous measure()-based API had one major advantage: It is really simple and easy to use without requiring lots of knowledge about OpenMetrics or similar concepts. For that reason as well as compatibility with existing code, it is preserved and may even be extended in the future. However, code relying on the `stats-updated` event as well as `get_stats` from `statsmanager` will break because the data model has changed completely; in case of `stats-updated`, the code will simply not run (as the event was renamed in order to avoid conflicts); the `get_stats` function has been removed completely (so it will cause a traceback when it is attempted to be used). Note that the measure_*_event methods have been removed from the module API. I was unable to find any uses or documentation and thus deemed they should not be ported. Re-implementation is possible when necessary. [0]: https://openmetrics.io/ [1]: https://prometheus.io/ [2]: #959 [3]: #960
author Jonas Schäfer <jonas@wielicki.name>
date Sun, 18 Apr 2021 11:47:41 +0200
parent 11416:0a9d6eec6a8f
child 11564:60e31c9ece57
line wrap: on
line source

<?xml version="1.0" encoding="UTF-8"?>
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  <Project xmlns="http://usefulinc.com/ns/doap#">
    <name>Prosody IM</name>
    <shortdesc>Lightweight XMPP server</shortdesc>
    <description>Prosody is a server for Jabber/XMPP written in Lua. It aims to be easy to use and light on resources. For developers, it aims to give a flexible system on which to rapidly develop added functionality or rapidly prototype new protocols.</description>
    <created>2008-08-22</created>
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    <category rdf:resource="https://linkmauve.fr/ns/xmpp-doap#category-jabber"/>
    <category rdf:resource="https://linkmauve.fr/ns/xmpp-doap#category-server"/>
    <homepage rdf:resource="https://prosody.im/"/>
    <download-page rdf:resource="https://prosody.im/download/"/>
    <license rdf:resource="https://hg.prosody.im/trunk/file/tip/COPYING"/>
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    <programming-langauge>Lua</programming-langauge>
    <programming-langauge>C</programming-langauge>
    <os>Linux</os>
    <os>macOS</os>
    <os>FreeBSD</os>
    <os>OpenBSD</os>
    <os>NetBSD</os>
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      <foaf:Person>
        <foaf:name>Matthew Wild</foaf:name>
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    <maintainer>
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        <foaf:name>Waqas Hussain</foaf:name>
        <foaf:nick>waqas</foaf:nick>
      </foaf:Person>
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    <maintainer>
      <foaf:Person>
        <foaf:name>Kim Alvefur</foaf:name>
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    </implements>
    <implements>
      <xmpp:SupportedXep>
        <xmpp:xep rdf:resource="https://xmpp.org/extensions/xep-0206.html"/>
        <xmpp:version>1.2</xmpp:version>
        <xmpp:since>0.2.0</xmpp:since>
      </xmpp:SupportedXep>
    </implements>
    <implements>
      <xmpp:SupportedXep>
        <xmpp:xep rdf:resource="https://xmpp.org/extensions/xep-0212.html"/>
        <xmpp:note>required level</xmpp:note>
      </xmpp:SupportedXep>
    </implements>
    <implements>
      <xmpp:SupportedXep>
        <xmpp:xep rdf:resource="https://xmpp.org/extensions/xep-0215.html"/>
        <xmpp:version>0.7</xmpp:version>
        <xmpp:status>complete</xmpp:status>
        <xmpp:since>0.12.0</xmpp:since>
        <xmpp:note>mod_external_services</xmpp:note>
      </xmpp:SupportedXep>
    </implements>
    <implements>
      <xmpp:SupportedXep>
        <xmpp:xep rdf:resource="https://xmpp.org/extensions/xep-0220.html"/>
        <xmpp:since>0.1.0</xmpp:since>
      </xmpp:SupportedXep>
    </implements>
    <implements>
      <xmpp:SupportedXep>
        <xmpp:xep rdf:resource="https://xmpp.org/extensions/xep-0222.html"/>
        <xmpp:since>0.11.0</xmpp:since>
        <xmpp:note>mod_pep</xmpp:note>
      </xmpp:SupportedXep>
    </implements>
    <implements>
      <xmpp:SupportedXep>
        <xmpp:xep rdf:resource="https://xmpp.org/extensions/xep-0223.html"/>
        <xmpp:since>0.11.0</xmpp:since>
        <xmpp:note>mod_pep</xmpp:note>
      </xmpp:SupportedXep>
    </implements>
    <implements>
      <xmpp:SupportedXep>
        <xmpp:xep rdf:resource="https://xmpp.org/extensions/xep-0227.html"/>
        <xmpp:since>0.7.0</xmpp:since>
        <xmpp:note>Used in migrator tools</xmpp:note>
      </xmpp:SupportedXep>
    </implements>
    <implements>
      <xmpp:SupportedXep>
        <xmpp:xep rdf:resource="https://xmpp.org/extensions/xep-0237.html"/>
        <xmpp:since>0.4.0</xmpp:since>
        <xmpp:note>implied by rfc6121</xmpp:note>
      </xmpp:SupportedXep>
    </implements>
    <implements>
      <xmpp:SupportedXep>
        <xmpp:xep rdf:resource="https://xmpp.org/extensions/xep-0249.html"/>
        <xmpp:version>1.2</xmpp:version>
        <xmpp:since>0.12.0</xmpp:since>
        <xmpp:note>mod_csi_simple</xmpp:note>
      </xmpp:SupportedXep>
    </implements>
    <implements>
      <xmpp:SupportedXep>
        <xmpp:xep rdf:resource="https://xmpp.org/extensions/xep-0277.html"/>
        <xmpp:status>partial</xmpp:status>
        <xmpp:note>mod_storage_0227</xmpp:note>
      </xmpp:SupportedXep>
    </implements>
    <implements>
      <xmpp:SupportedXep>
        <xmpp:xep rdf:resource="https://xmpp.org/extensions/xep-0280.html"/>
        <xmpp:version>0.12.1</xmpp:version>
        <xmpp:status>complete</xmpp:status>
        <xmpp:since>0.10.0</xmpp:since>
      </xmpp:SupportedXep>
    </implements>
    <implements>
      <xmpp:SupportedXep>
        <xmpp:xep rdf:resource="https://xmpp.org/extensions/xep-0286.html"/>
        <xmpp:since>0.11.0</xmpp:since>
        <xmpp:note>mod_csi_simple</xmpp:note>
      </xmpp:SupportedXep>
    </implements>
    <implements>
      <xmpp:SupportedXep>
        <xmpp:xep rdf:resource="https://xmpp.org/extensions/xep-0288.html"/>
        <xmpp:version>1.0.1</xmpp:version>
        <xmpp:status>complete</xmpp:status>
        <xmpp:since>0.12.0</xmpp:since>
      </xmpp:SupportedXep>
    </implements>
    <implements>
      <xmpp:SupportedXep>
        <xmpp:xep rdf:resource="https://xmpp.org/extensions/xep-0292.html"/>
        <xmpp:version>0.10</xmpp:version>
        <xmpp:status>complete</xmpp:status>
        <xmpp:since>0.11.0</xmpp:since>
        <xmpp:note>mod_vcard4, mod_vcard_legacy</xmpp:note>
      </xmpp:SupportedXep>
    </implements>
    <implements>
      <xmpp:SupportedXep>
        <xmpp:xep rdf:resource="https://xmpp.org/extensions/xep-0297.html"/>
        <xmpp:since>0.11.0</xmpp:since>
        <xmpp:note>Used by XEP-0280, XEP-0313</xmpp:note>
      </xmpp:SupportedXep>
    </implements>
    <implements>
      <xmpp:SupportedXep>
        <xmpp:xep rdf:resource="https://xmpp.org/extensions/xep-0302.html"/>
        <xmpp:note>Core Server</xmpp:note>
      </xmpp:SupportedXep>
    </implements>
    <implements>
      <xmpp:SupportedXep>
        <xmpp:xep rdf:resource="https://xmpp.org/extensions/xep-0307.html"/>
        <xmpp:version>0.1</xmpp:version>
        <xmpp:status>complete</xmpp:status>
        <xmpp:since>0.6.0</xmpp:since>
        <xmpp:note>Moved into mod_muc_unique in 0.11</xmpp:note>
      </xmpp:SupportedXep>
    </implements>
    <implements>
      <xmpp:SupportedXep>
        <xmpp:xep rdf:resource="https://xmpp.org/extensions/xep-0313.html"/>
        <xmpp:version>0.7.2</xmpp:version>
        <xmpp:status>complete</xmpp:status>
        <xmpp:since>0.10.0</xmpp:since>
        <xmpp:note>mod_mam, mod_muc_mam</xmpp:note>
      </xmpp:SupportedXep>
    </implements>
    <implements>
      <xmpp:SupportedXep>
        <xmpp:xep rdf:resource="https://xmpp.org/extensions/xep-0317.html"/>
        <xmpp:version>0.1</xmpp:version>
        <xmpp:status>planned</xmpp:status>
        <xmpp:since>0.12.0</xmpp:since>
        <xmpp:note>muc/hats</xmpp:note>
      </xmpp:SupportedXep>
    </implements>
    <implements>
      <xmpp:SupportedXep>
        <xmpp:xep rdf:resource="https://xmpp.org/extensions/xep-0318.html"/>
        <xmpp:version>0.2</xmpp:version>
        <xmpp:since>0.9.0</xmpp:since>
        <xmpp:note>refers to inclusion of delay stamp in presence</xmpp:note>
      </xmpp:SupportedXep>
    </implements>
    <implements>
      <xmpp:SupportedXep>
        <xmpp:xep rdf:resource="https://xmpp.org/extensions/xep-0352.html"/>
        <xmpp:version>1.0.0</xmpp:version>
        <xmpp:since>0.11.0</xmpp:since>
      </xmpp:SupportedXep>
    </implements>
    <implements>
      <xmpp:SupportedXep>
        <xmpp:xep rdf:resource="https://xmpp.org/extensions/xep-0353.html"/>
        <xmpp:version>0.3</xmpp:version>
        <xmpp:since>0.11.6</xmpp:since>
        <xmpp:note>triggers buffer flush in mod_csi_simple since 0.11.6; recognised by mod_carbons and mod_mam since 0.12</xmpp:note>
      </xmpp:SupportedXep>
    </implements>
    <implements>
      <xmpp:SupportedXep>
        <xmpp:xep rdf:resource="https://xmpp.org/extensions/xep-0359.html"/>
        <xmpp:version>0.6.0</xmpp:version>
        <xmpp:status>complete</xmpp:status>
        <xmpp:since>0.10.0</xmpp:since>
        <xmpp:note>Used in context of XEP-0313 by mod_mam and mod_muc_mam</xmpp:note>
      </xmpp:SupportedXep>
    </implements>
    <implements>
      <xmpp:SupportedXep>
        <xmpp:xep rdf:resource="https://xmpp.org/extensions/xep-0363.html"/>
        <xmpp:version>1.0.0</xmpp:version>
        <xmpp:status>complete	</xmpp:status>
        <xmpp:since>0.12.0</xmpp:since>
        <xmpp:note>mod_http_file_share</xmpp:note>
      </xmpp:SupportedXep>
    </implements>
    <implements>
      <xmpp:SupportedXep>
        <xmpp:xep rdf:resource="https://xmpp.org/extensions/xep-0368.html"/>
        <xmpp:version>1.1.0</xmpp:version>
        <xmpp:status>partial</xmpp:status>
        <xmpp:since>0.2.0</xmpp:since>
        <xmpp:note>legacy_ssl_ports</xmpp:note>
      </xmpp:SupportedXep>
    </implements>
    <implements>
      <xmpp:SupportedXep>
        <xmpp:xep rdf:resource="https://xmpp.org/extensions/xep-0380.html"/>
        <xmpp:version>0.3.0</xmpp:version>
        <xmpp:since>0.11.0</xmpp:since>
        <xmpp:note>Used in context of XEP-0352</xmpp:note>
      </xmpp:SupportedXep>
    </implements>
    <implements>
      <xmpp:SupportedXep>
        <xmpp:xep rdf:resource="https://xmpp.org/extensions/xep-0384.html"/>
        <xmpp:note>via XEP-0163, XEP-0222</xmpp:note>
      </xmpp:SupportedXep>
    </implements>
    <implements>
      <xmpp:SupportedXep>
        <xmpp:xep rdf:resource="https://xmpp.org/extensions/xep-0398.html"/>
        <xmpp:version>0.2.1</xmpp:version>
        <xmpp:since>0.11.0</xmpp:since>
        <xmpp:status>complete</xmpp:status>
        <xmpp:note>mod_vcard_legacy</xmpp:note>
      </xmpp:SupportedXep>
    </implements>
    <implements>
      <xmpp:SupportedXep>
        <xmpp:xep rdf:resource="https://xmpp.org/extensions/xep-0410.html"/>
        <xmpp:version>1.0.1</xmpp:version>
        <xmpp:since>0.11.0</xmpp:since>
        <xmpp:status>complete</xmpp:status>
        <xmpp:note>Server Optimization</xmpp:note>
      </xmpp:SupportedXep>
    </implements>
    <implements>
      <xmpp:SupportedXep>
        <xmpp:xep rdf:resource="https://xmpp.org/extensions/xep-0421.html"/>
        <xmpp:version>0.1.0</xmpp:version>
        <xmpp:since>0.12.0</xmpp:since>
        <xmpp:status>complete</xmpp:status>
        <xmpp:note>mod_muc</xmpp:note>
      </xmpp:SupportedXep>
    </implements>
    <implements>
      <xmpp:SupportedXep>
        <xmpp:xep rdf:resource="https://xmpp.org/extensions/xep-0441.html"/>
        <xmpp:version>0.2.0</xmpp:version>
        <xmpp:note>Broken out of XEP-0313</xmpp:note>
      </xmpp:SupportedXep>
    </implements>
  </Project>
</rdf:RDF>