jail_exporter.in

#!/bin/sh

# PROVIDE: jail_exporter
# REQUIRE: LOGIN
# KEYWORD: shutdown
#
# Add the following lines to /etc/rc.conf.local or /etc/rc.conf
# to enable this service:
#
# jail_exporter_enable (bool)
#     Set to NO by default
#     Set it to YES to enable jail_exporter
# jail_exporter_telemetry_path (string)
#     Set to /metrics by default
#     Set to path to export metrics on
# jail_exporter_listen_address (string)
#     Set to 127.0.0.1:9452 by default
#     Set to address to listen on
# jail_exporter_args (string)
#     Set additional command line arguments
#     Default is ""

. /etc/rc.subr

name=jail_exporter
rcvar=jail_exporter_enable

load_rc_config $name

: ${jail_exporter_enable:="NO"}
: ${jail_exporter_telemetry_path:="/metrics"}
: ${jail_exporter_listen_address:="127.0.0.1:9452"}
: ${jail_exporter_args:=""}

pidfile="/var/run/${name}.pid"
command="/usr/sbin/daemon"
procname="%%PREFIX%%/sbin/${name}"
command_args="-p ${pidfile} -m 3 -T ${name} \
              /usr/bin/env ${procname} \
              --web.listen-address='${jail_exporter_listen_address}' \
              --web.telemetry-path='${jail_exporter_telemetry_path}' \
              ${jail_exporter_args}"

start_precmd=jail_exporter_start_precmd

jail_exporter_start_precmd() {
    if [ ! -e ${pidfile} ]; then
        install \
            -o 'root' \
            -g 'wheel' \
            -m 0600 \
            /dev/null ${pidfile};
    fi
}

load_rc_config $name
run_rc_command "$1"