www/py-gunicorn: Record child process

add -p to daemon to store child process pid

Currently the installed gunicorn rc.d script records the PID of the
supervisor process to /var/run/gunicorn. This is done by passing "-P"
via daemon(8).

Record the primary gunicorn worker process in /var/run as well, this
will enable better integration with tools like newsyslog(8). For example
gunicorn accepts a SIG1 signal to the main worker process to close and
reopen logfiles after rotation to the main worker as well as child
process. By also passing "-p" to daemon we can then have newsyslog get
the appropriate pid
to sent a SIG1 to.

Here are the docs on the signals gunicorn accepts, as there are other
interesting usecases this would enable as well:
https://docs.gunicorn.org/en/stable/signals.html

PR:		281005
Reported by:	pete@nomadlogic.org

www/py-gunicorn/Makefile

 PORTNAME=	gunicorn
 DISTVERSION=	23.0.0
+PORTREVISION=	1
 CATEGORIES=	www python
 MASTER_SITES=	PYPI
 PKGNAMEPREFIX=	${PYTHON_PKGNAMEPREFIX}

www/py-gunicorn/files/gunicorn.in

@@ -25,14 +25,16 @@ load_rc_config $name
 : ${gunicorn_group=%%GROUPS%%}
 
 pidfile="/var/run/${name}.pid"
+cpidfile="/var/run/${name}-worker.pid"
 command=/usr/sbin/daemon
-command_args="-P ${pidfile} -f -ST ${name} %%PREFIX%%/bin/gunicorn -c ${gunicorn_config}"
+command_args="-P ${pidfile} -p ${cpidfile} -f -ST ${name} %%PREFIX%%/bin/gunicorn -c ${gunicorn_config}"
 required_files="${gunicorn_config}"
 start_precmd="gunicorn_precmd"
 
 gunicorn_precmd()
 {
 	install -o ${gunicorn_user} /dev/null ${pidfile}
+	install -o ${gunicorn_user} /dev/null ${cpidfile}
 }
 
 run_rc_command "$1"