Mercurial > prosody-modules

annotate misc/systemd/socket-activation.lua @ 4876:0f5f2d4475b9

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mod_http_xep227: Add support for import via APIs rather than direct store manipulation In particular this transitions PEP nodes and data to be imported via mod_pep's APIs, fixing issues with importing at runtime while PEP data may already be live in RAM. Next obvious candidate for this approach is rosters, so clients get immediate roster pushes and other special handling (such as emitting subscribes to reach the desired subscription state).
author Matthew Wild <mwild1@gmail.com>
date Tue, 18 Jan 2022 17:01:18 +0000
parents 3296a09b4e57
children
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3296a09b4e57 misc/systemd: Experimental files for enabling socket activation
Kim Alvefur <zash@zash.se>
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1 -- Monkeypatch to support socket activation
3296a09b4e57 misc/systemd: Experimental files for enabling socket activation
Kim Alvefur <zash@zash.se>
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2 --
3296a09b4e57 misc/systemd: Experimental files for enabling socket activation
Kim Alvefur <zash@zash.se>
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3 -- Requires LuaSocket after "agnostic" changes merged
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4 --
3296a09b4e57 misc/systemd: Experimental files for enabling socket activation
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5 -- To enable:
3296a09b4e57 misc/systemd: Experimental files for enabling socket activation
Kim Alvefur <zash@zash.se>
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6 -- RunScript "socket-activation.lua"
3296a09b4e57 misc/systemd: Experimental files for enabling socket activation
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7
3296a09b4e57 misc/systemd: Experimental files for enabling socket activation
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8 local socket = require"socket";
3296a09b4e57 misc/systemd: Experimental files for enabling socket activation
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9 local tcp_serv_mt = debug.getregistry()["tcp{server}"];
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10 local socket_bind = socket.bind;
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11
3296a09b4e57 misc/systemd: Experimental files for enabling socket activation
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12 local SD_LISTEN_FDS_START = 3;
3296a09b4e57 misc/systemd: Experimental files for enabling socket activation
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13
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14 local fds = tonumber(os.getenv"LISTEN_FDS") or 0;
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15
3296a09b4e57 misc/systemd: Experimental files for enabling socket activation
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16 if fds < SD_LISTEN_FDS_START then return; end
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17
3296a09b4e57 misc/systemd: Experimental files for enabling socket activation
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18 local servs = {};
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19
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20 for i = 1, fds do
3296a09b4e57 misc/systemd: Experimental files for enabling socket activation
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21 local serv = socket.tcp();
3296a09b4e57 misc/systemd: Experimental files for enabling socket activation
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22 if serv:getfd() >= 0 then
3296a09b4e57 misc/systemd: Experimental files for enabling socket activation
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23 return; -- This won't work, we will leak the old FD
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24 end
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25 debug.setmetatable(serv, tcp_serv_mt);
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26 serv:setfd(SD_LISTEN_FDS_START + i - 1);
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27 local ip, port = serv:getsockname();
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28 servs [ ip .. ":" .. port ] = serv;
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29 end
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30
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31 function socket.bind( ip, port, backlog )
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32 local sock = servs [ ip .. ":" .. port ];
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33 if sock then
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34 servs [ ip .. ":" .. port ] = nil;
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35 return sock;
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36 end
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37 if next(servs) == nil then
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38 -- my work here is done
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39 socket.bind = socket_bind;
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40 end
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41 return socket_bind( ip, port, backlog );
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42 end