Jerry Regan wrote:
> I think I could justify the effort to ‘script’ psql. I’m not so sure I can
> justify the effort to write a standalone program.
As a hack around psql, you could have a script that feeds psql
with "SELECT 1" from time to time and capture only the
notifications output:
(echo "listen foo;"; while true; do echo "select 1;"; sleep 1; done) | \
psql | grep notification
When another session issues NOTIFY foo, 'bar'
that output filtered by the above command is, for example:
Asynchronous notification "foo" with payload "bar" received from
server process with PID 20033.
which just needs to be piped into another step that runs your custom
action.
Best regards,
--
Daniel Vérité
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Twitter: @DanielVerite
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