Mercurial > prosody-modules

annotate misc/systemd/socket-activation.lua @ 5139:449e4ca4de32

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mod_unified_push: Remove dependency on trunk util.jwt (0.12 compat) This should allow the module to work on 0.12, while preserving expiry checking (which was not built in to 0.12's util.jwt).
author Matthew Wild <mwild1@gmail.com>
date Tue, 10 Jan 2023 16:34:21 +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}"];
3296a09b4e57 misc/systemd: Experimental files for enabling socket activation
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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
3296a09b4e57 misc/systemd: Experimental files for enabling socket activation
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14 local fds = tonumber(os.getenv"LISTEN_FDS") or 0;
3296a09b4e57 misc/systemd: Experimental files for enabling socket activation
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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 = {};
3296a09b4e57 misc/systemd: Experimental files for enabling socket activation
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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
3296a09b4e57 misc/systemd: Experimental files for enabling socket activation
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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