mackerel-agent.init

#!/bin/sh
### BEGIN INIT INFO
# Provides:          mackerel-agent
# Short-Description: 'mackerel.io agent'
# Description:       'mackerel.io agent'
# Required-Start:    $syslog $network $remote_fs
# Required-Stop:     $syslog $network $remote_fs
# Default-Start:     2 3 4 5
# Default-Stop:      0 1 6
### END INIT INFO

NAME=mackerel-agent                  # Introduce the short server's name here

[ -r /etc/default/$NAME ] && . /etc/default/$NAME

PATH=/sbin:/usr/sbin:/bin:/usr/bin
DAEMON=${DAEMON:="/usr/bin/$NAME"}
SCRIPTNAME=/etc/init.d/$NAME
LOGFILE=${LOGILE:="/var/log/$NAME.log"}
PIDFILE=${PIDFILE:="/var/run/$NAME.pid"}
ROOT=${ROOT:="/var/lib/$NAME"}
MACKEREL_PLUGIN_WORKDIR=${MACKEREL_PLUGIN_WORKDIR:="/var/tmp/$NAME"}

if [ "$HTTP_PROXY" != "" ]; then
    export HTTP_PROXY=$HTTP_PROXY
fi

# Exit if the package is not installed
[ -x $DAEMON ] || exit 0

# Define LSB log_* functions.
# Depend on lsb-base (>= 3.0-6) to ensure that this file is present.
. /lib/lsb/init-functions

#
# Function that starts the daemon/service
#
do_start()
{
    mkdir -m 777 -p $MACKEREL_PLUGIN_WORKDIR
    MACKEREL_PLUGIN_WORKDIR=$MACKEREL_PLUGIN_WORKDIR $DAEMON ${APIBASE:+--apibase=$APIBASE} ${APIKEY:+--apikey=$APIKEY} --pidfile=$PIDFILE --root=$ROOT $OTHER_OPTS >>$LOGFILE 2>&1 &
    sleep 3
    kill -0 $(cat $PIDFILE 2>/dev/null) >/dev/null 2>&1
    return $?
}

do_configtest()
{
    $DAEMON configtest ${APIBASE:+--apibase=$APIBASE} ${APIKEY:+--apikey=$APIKEY} --pidfile=$PIDFILE --root=$ROOT $OTHER_OPTS >>$LOGFILE 2>&1
    return $?
}

do_retire()
{
    $DAEMON retire -force ${APIBASE:+--apibase=$APIBASE} ${APIKEY:+--apikey=$APIKEY} --root=$ROOT $OTHER_OPTS >>$LOGFILE 2>&1
}

#
# Function that stops the daemon/service
#
do_stop()
{
    start-stop-daemon --stop --quiet --retry=TERM/30/KILL/5 --pidfile $PIDFILE --exec $DAEMON
    RETVAL="$?"
    [ "$RETVAL" = 2 ] && return 2
    start-stop-daemon --stop --quiet --oknodo --retry=0/30/KILL/5 --exec $DAEMON
    [ "$?" = 2 ] && return 2
    # Many daemons don't delete their pidfiles when they exit.
    rm -f $PIDFILE
    return "$RETVAL"
}

case "$1" in
    start)
        log_daemon_msg "Starting $NAME"
        do_start
        retval=$?
        case "$retval" in
            0) log_end_msg 0 ;;
            *) log_end_msg 1; exit $retval ;;
        esac
        ;;
    stop)
        log_daemon_msg "Stopping $DESC" "$NAME"
        do_stop
        retval=$?
        if [ "$AUTO_RETIREMENT" != "" ] && [ "$AUTO_RETIREMENT" != "0" ]; then
          do_retire || retval=$?
        fi
        case "$retval" in
            0|1) log_end_msg 0 ;;
            *)   log_end_msg 1; exit $retval ;;
        esac
        ;;
    status)
        status_of_proc "$DAEMON" "$NAME" && exit 0 || exit $?
        ;;
    reload|force-reload)
        do_configtest || exit $?
        log_daemon_msg "Restarting $DESC" "$NAME"
        do_stop
        retval=$?
        case "$retval" in
            0|1)
                do_start
                retval=$?
                case "$retval" in
                    0) log_end_msg 0 ;;
                    *) log_end_msg 1; exit $retval ;; # Failed to start
                esac
                ;;
            *)
                # Failed to stop
                log_end_msg 1; exit $retval
            ;;
        esac
        ;;
    restart)
        log_daemon_msg "Restarting $DESC" "$NAME"
        do_stop
        retval=$?
        case "$retval" in
            0|1)
                do_start
                retval=$?
                case "$retval" in
                    0) log_end_msg 0 ;;
                    *) log_end_msg 1; exit $retval ;; # Failed to start
                esac
                ;;
            *)
                # Failed to stop
                log_end_msg 1; exit $retval
            ;;
        esac
        ;;
    configtest)
        log_daemon_msg "Testing configuration of $NAME"
        do_configtest
        retval=$?
        case "$retval" in
            0) log_end_msg 0 ;;
            *) log_end_msg 1; exit $retval ;;
        esac
        ;;
    *)
        echo "Usage: $SCRIPTNAME {start|stop|restart|reload|status|configtest}" >&2
        exit 3
    ;;
esac

: