Activating a systemd service

[tim-tx]

Is it possible to activate a systemd service with one of the notification schemes? I know systemd has a socket activation method that I believe can start a service as soon as the socket gets a connection. None of the url schemes seem to support unix sockets, so I'd have to map a socket to TCP... seems a bit roundabout but feasible. I don't think the message even matters, I could just use JSON and send an empty message. Just checking if anyone has come up with anything better before I attempt.

[tim-tx]

This is what I settled on. Some help provided on stack exchange.

myservice.socket:

[Unit]
Description=myservice socket

[Socket]
ListenStream=127.0.0.1:9900
Accept=yes

[Install]
WantedBy=sockets.target

[email protected]:

[Unit]
Description=myservice

[Service]
ExecStartPre=/bin/sh -c 'echo -e "HTTP/1.1 200 OK\nContent-Type: text/plain; charset=utf-8\nConnection: close\nContent-length: 3\n\nOK\n"'
ExecStart=<do something>
StandardInput=socket
StandardOutput=socket

$ apprise -vv -t 'foo' -b 'bar' 'json://localhost:9900'
2024-06-14 12:52:05,399 - INFO - Sent JSON POST notification.