Mercurial > prosody-modules

annotate misc/systemd/socket-activation.lua @ 5119:048e339706ba

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
mod_rest: Remove manual reference expansion in schema This hack was originally added to reduce the number of definitions of common attributes (type, to, from etc) and payloads (e.g. delay). This predated pointers and references, and until now was needed because parsing picked out the correct stanza kind from the schema, which broke internal references. Removing this hack paves the way for allowing the schema to be configured or customized more easily.
author Kim Alvefur <zash@zash.se>
date Tue, 20 Dec 2022 21:48:28 +0100
parents 3296a09b4e57
children
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
2352
3296a09b4e57 misc/systemd: Experimental files for enabling socket activation
Kim Alvefur <zash@zash.se>
parents:
diff changeset
1 -- Monkeypatch to support socket activation
3296a09b4e57 misc/systemd: Experimental files for enabling socket activation
Kim Alvefur <zash@zash.se>
parents:
diff changeset
2 --
3296a09b4e57 misc/systemd: Experimental files for enabling socket activation
Kim Alvefur <zash@zash.se>
parents:
diff changeset
3 -- Requires LuaSocket after "agnostic" changes merged
3296a09b4e57 misc/systemd: Experimental files for enabling socket activation
Kim Alvefur <zash@zash.se>
parents:
diff changeset
4 --
3296a09b4e57 misc/systemd: Experimental files for enabling socket activation
Kim Alvefur <zash@zash.se>
parents:
diff changeset
5 -- To enable:
3296a09b4e57 misc/systemd: Experimental files for enabling socket activation
Kim Alvefur <zash@zash.se>
parents:
diff changeset
6 -- RunScript "socket-activation.lua"
3296a09b4e57 misc/systemd: Experimental files for enabling socket activation
Kim Alvefur <zash@zash.se>
parents:
diff changeset
7
3296a09b4e57 misc/systemd: Experimental files for enabling socket activation
Kim Alvefur <zash@zash.se>
parents:
diff changeset
8 local socket = require"socket";
3296a09b4e57 misc/systemd: Experimental files for enabling socket activation
Kim Alvefur <zash@zash.se>
parents:
diff changeset
9 local tcp_serv_mt = debug.getregistry()["tcp{server}"];
3296a09b4e57 misc/systemd: Experimental files for enabling socket activation
Kim Alvefur <zash@zash.se>
parents:
diff changeset
10 local socket_bind = socket.bind;
3296a09b4e57 misc/systemd: Experimental files for enabling socket activation
Kim Alvefur <zash@zash.se>
parents:
diff changeset
11
3296a09b4e57 misc/systemd: Experimental files for enabling socket activation
Kim Alvefur <zash@zash.se>
parents:
diff changeset
12 local SD_LISTEN_FDS_START = 3;
3296a09b4e57 misc/systemd: Experimental files for enabling socket activation
Kim Alvefur <zash@zash.se>
parents:
diff changeset
13
3296a09b4e57 misc/systemd: Experimental files for enabling socket activation
Kim Alvefur <zash@zash.se>
parents:
diff changeset
14 local fds = tonumber(os.getenv"LISTEN_FDS") or 0;
3296a09b4e57 misc/systemd: Experimental files for enabling socket activation
Kim Alvefur <zash@zash.se>
parents:
diff changeset
15
3296a09b4e57 misc/systemd: Experimental files for enabling socket activation
Kim Alvefur <zash@zash.se>
parents:
diff changeset
16 if fds < SD_LISTEN_FDS_START then return; end
3296a09b4e57 misc/systemd: Experimental files for enabling socket activation
Kim Alvefur <zash@zash.se>
parents:
diff changeset
17
3296a09b4e57 misc/systemd: Experimental files for enabling socket activation
Kim Alvefur <zash@zash.se>
parents:
diff changeset
18 local servs = {};
3296a09b4e57 misc/systemd: Experimental files for enabling socket activation
Kim Alvefur <zash@zash.se>
parents:
diff changeset
19
3296a09b4e57 misc/systemd: Experimental files for enabling socket activation
Kim Alvefur <zash@zash.se>
parents:
diff changeset
20 for i = 1, fds do
3296a09b4e57 misc/systemd: Experimental files for enabling socket activation
Kim Alvefur <zash@zash.se>
parents:
diff changeset
21 local serv = socket.tcp();
3296a09b4e57 misc/systemd: Experimental files for enabling socket activation
Kim Alvefur <zash@zash.se>
parents:
diff changeset
22 if serv:getfd() >= 0 then
3296a09b4e57 misc/systemd: Experimental files for enabling socket activation
Kim Alvefur <zash@zash.se>
parents:
diff changeset
23 return; -- This won't work, we will leak the old FD
3296a09b4e57 misc/systemd: Experimental files for enabling socket activation
Kim Alvefur <zash@zash.se>
parents:
diff changeset
24 end
3296a09b4e57 misc/systemd: Experimental files for enabling socket activation
Kim Alvefur <zash@zash.se>
parents:
diff changeset
25 debug.setmetatable(serv, tcp_serv_mt);
3296a09b4e57 misc/systemd: Experimental files for enabling socket activation
Kim Alvefur <zash@zash.se>
parents:
diff changeset
26 serv:setfd(SD_LISTEN_FDS_START + i - 1);
3296a09b4e57 misc/systemd: Experimental files for enabling socket activation
Kim Alvefur <zash@zash.se>
parents:
diff changeset
27 local ip, port = serv:getsockname();
3296a09b4e57 misc/systemd: Experimental files for enabling socket activation
Kim Alvefur <zash@zash.se>
parents:
diff changeset
28 servs [ ip .. ":" .. port ] = serv;
3296a09b4e57 misc/systemd: Experimental files for enabling socket activation
Kim Alvefur <zash@zash.se>
parents:
diff changeset
29 end
3296a09b4e57 misc/systemd: Experimental files for enabling socket activation
Kim Alvefur <zash@zash.se>
parents:
diff changeset
30
3296a09b4e57 misc/systemd: Experimental files for enabling socket activation
Kim Alvefur <zash@zash.se>
parents:
diff changeset
31 function socket.bind( ip, port, backlog )
3296a09b4e57 misc/systemd: Experimental files for enabling socket activation
Kim Alvefur <zash@zash.se>
parents:
diff changeset
32 local sock = servs [ ip .. ":" .. port ];
3296a09b4e57 misc/systemd: Experimental files for enabling socket activation
Kim Alvefur <zash@zash.se>
parents:
diff changeset
33 if sock then
3296a09b4e57 misc/systemd: Experimental files for enabling socket activation
Kim Alvefur <zash@zash.se>
parents:
diff changeset
34 servs [ ip .. ":" .. port ] = nil;
3296a09b4e57 misc/systemd: Experimental files for enabling socket activation
Kim Alvefur <zash@zash.se>
parents:
diff changeset
35 return sock;
3296a09b4e57 misc/systemd: Experimental files for enabling socket activation
Kim Alvefur <zash@zash.se>
parents:
diff changeset
36 end
3296a09b4e57 misc/systemd: Experimental files for enabling socket activation
Kim Alvefur <zash@zash.se>
parents:
diff changeset
37 if next(servs) == nil then
3296a09b4e57 misc/systemd: Experimental files for enabling socket activation
Kim Alvefur <zash@zash.se>
parents:
diff changeset
38 -- my work here is done
3296a09b4e57 misc/systemd: Experimental files for enabling socket activation
Kim Alvefur <zash@zash.se>
parents:
diff changeset
39 socket.bind = socket_bind;
3296a09b4e57 misc/systemd: Experimental files for enabling socket activation
Kim Alvefur <zash@zash.se>
parents:
diff changeset
40 end
3296a09b4e57 misc/systemd: Experimental files for enabling socket activation
Kim Alvefur <zash@zash.se>
parents:
diff changeset
41 return socket_bind( ip, port, backlog );
3296a09b4e57 misc/systemd: Experimental files for enabling socket activation
Kim Alvefur <zash@zash.se>
parents:
diff changeset
42 end