#!/bin/sh

# PROVIDE: ping_exporter
# REQUIRE: LOGIN
# KEYWORD: shutdown
#
# Add the following lines to /etc/rc.conf.local or /etc/rc.conf
# to enable this service:
#
# ping_exporter_enable (bool):                Set to NO by default.
#               Set it to YES to enable ping_exporter.
# ping_exporter_user (string):                Set user that ping_exporter will run under
#               Default is "nobody".
# ping_exporter_group (string):               Set group that ping_exporter will run under
#               Default is "nobody".
# ping_exporter_args (string):                Set extra arguments to pass to ping_exporter
#               Default is "".
# ping_exporter_listen_address (string):      Set ip:port that ping_exporter will listen on
#               Default is "localhost:9427".
# ping_exporter_config (string):              Set configuration file of ping_exporter
#               Default is "/usr/local/etc/ping_exporter.yml".
# ping_exporter_syslog_output_enable (bool):  Set to YES to enable syslog output
#               Default is "YES". See daemon(8).
# ping_exporter_syslog_output_tag (str):      Set syslog tag if syslog enabled.
#               Default is "ping_exporter". See daemon(8).
# ping_exporter_syslog_output_priority (str): Set syslog priority if syslog enabled.
#               Default is "notice". See daemon(8).
# ping_exporter_syslog_output_facility (str): Set to YES to enable syslog output
#               Default is "daemon". See daemon(8).


. /etc/rc.subr

name=ping_exporter
desc="Ping exporter for use with Prometheus"
rcvar=ping_exporter_enable

load_rc_config $name

: ${ping_exporter_enable:=NO}
: ${ping_exporter_user:=nobody}
: ${ping_exporter_group:=nobody}
: ${ping_exporter_listen_address=localhost:9427}
: ${ping_exporter_config="/usr/local/etc/ping_exporter.yml"}
: ${ping_exporter_syslog_output_enable:="YES"}

start_precmd=ping_exporter_startprecmd

if checkyesno ping_exporter_syslog_output_enable; then
	if [ -n "${ping_exporter_syslog_output_tag}" ]; then
		ping_exporter_syslog_output_flags="-T ${ping_exporter_syslog_output_tag}"
	else
		ping_exporter_syslog_output_flags="-T ${name}"
	fi
	if [ -n "${ping_exporter_syslog_output_priority}" ]; then
		ping_exporter_syslog_output_flags="${ping_exporter_syslog_output_flags} -s ${ping_exporter_syslog_output_priority}"
	fi
	if [ -n "${ping_exporter_syslog_output_facility}" ]; then
		ping_exporter_syslog_output_flags="${ping_exporter_syslog_output_flags} -l ${ping_exporter_syslog_output_facility}"
	fi
fi

pidfile=/var/run/ping_exporter.pid
procname="/usr/local/bin/ping_exporter"
required_files="${ping_exporter_config}"

command=/usr/sbin/daemon
command_args="-p ${pidfile} -t ${name} ${ping_exporter_syslog_output_flags} -S \
    /usr/bin/env ${procname} \
    --web.listen-address=${ping_exporter_listen_address} \
    --config.path=${ping_exporter_config} \
    ${ping_exporter_args} 2>&1"

ping_exporter_startprecmd()
{
    if [ ! -e ${pidfile} ]; then
        install -o ${ping_exporter_user} -g ${ping_exporter_group} /dev/null ${pidfile};
    else
        chown ${ping_exporter_user}:${ping_exporter_group} ${pidfile};
    fi
}

run_rc_command "$1"
