#!/bin/sh

# PROVIDE: vmagent
# REQUIRE: NETWORK
# BEFORE: DAEMON

. /etc/rc.subr

name="vmagent"
desc="Agent daemon for VictoriaMetrics"
rcvar="vmagent_enable"
pidfile="/var/run/${name}.pid"
daemon_pidfile="/var/run/${name}-daemon.pid"
logdir="/var/log/${name}"
logfile="${logdir}/vmagent.log"
command="%%PREFIX%%/bin/vmagent"
vmagent_args=${vmagent_args-"--remoteWrite.tmpDataPath=/tmp --promscrape.config=%%PREFIX%%/etc/prometheus/prometheus.yml --remoteWrite.url=http://127.0.0.1:8429/api/v1/write --memory.allowedPercent=80"}
vmagent_user="%%VICTORIA_USER%%"
load_rc_config ${name}

restart_precmd="checkconfig"
start_precmd="checkconfig"
checkconfig_cmd="checkconfig"
start_cmd="start"
stop_cmd="stop"
status_cmd="status"
extra_commands="checkconfig reload"

checkconfig()
{
	local _ret

	/usr/bin/su -m ${vmagent_user} -c "${command} ${vmagent_args} -promscrape.config.dryRun" > /dev/null 2>&1
	_ret=$?
	if [ ${_ret} -ne 0 ]; then
		echo "${name} checkconfig failed:"
		echo "/usr/bin/su -m ${vmagent_user} -c \"${command} ${vmagent_args} -promscrape.config.dryRun\""
		exit ${_ret}
	fi
}

start()
{
	[ ! -d ${logdir} ] && mkdir -p ${logdir}
	touch ${logfile}
	chown ${vmagent_user} ${logdir} ${logfile}
	/usr/sbin/daemon -u ${vmagent_user} -f -R5 -p ${pidfile} -P ${daemon_pidfile} -o ${logfile} ${command} ${vmagent_args}
}

stop()
{
	if [ -f "${daemon_pidfile}" ]; then
		pids=$( pgrep -F ${daemon_pidfile} 2>&1 )
		_err=$?
		[ ${_err} -eq 0 ] && kill -9 ${pids} && /bin/rm -f ${daemon_pidfile}
	fi
	if [ -f "${pidfile}" ]; then
		pids=$( pgrep -F ${pidfile} 2>&1 )
		_err=$?
		[ ${_err} -eq 0 ] && kill -9 ${pids} && /bin/rm -f ${pidfile}
	fi
}

status()
{
	if [ -f "${pidfile}" ]; then
		pids=$( pgrep -F ${pidfile} 2>&1 )
		_err=$?
		if [ ${_err} -eq 0 ]; then
			echo "${name} is running as pid ${pids}"
			exit 0
		else
			echo "wrong pid: ${pids}"
			exit 1
		fi
	else
		echo "no pidfile $pidfile"
		exit 1
	fi
}

run_rc_command "$1"