ecagentd

#! /bin/sh 
### BEGIN INIT INFO
# Provides:          ecagentd
# Required-Start:    $remote_fs $network 
# Required-Stop:     $remote_fs
# Default-Start:     2 3 4 5
# Default-Stop:      0 1 6
# Short-Description: Start ECM Agent daemon
### END INIT INFO

set +e

NAME=ecagentd
TWISTD=/usr/bin/twistd
TAC=$NAME.tac
DESC="ECM Agent"

test -x $TWISTD || exit 0

DIR=/opt/ecmanaged/ecagent
PID_FILE=$DIR/twistd.pid

# Check working dir
if test ! -d "$DIR"; then
  echo "Unable to access work dir: $DIR"
  exit 1;
fi

export LANG="C"
export PATH="${PATH:+$PATH:}/usr/sbin:/sbin"

# clean APT related environment when started from cloud-init
# bug: http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=439763
        
unset PERL_DL_NONLAZY
unset DEBCONF_REDIR
unset DEBIAN_FRONTEND
unset DEBIAN_HAS_FRONTEND
unset DPKG_NO_TSTP

# define LSB log_* functions.
. /lib/lsb/init-functions

getpid() {
    echo `cat $PID_FILE 2>/dev/null`
}

killagent() {
    PID=$(getpid)
    ls -l /proc/$PID/exe > /dev/null 2>&1
    case "$?" in
        0) kill -9 $PID >/dev/null 2>&1; pkill -f ${TAC} >/dev/null 2>&1 ;;
        *) pkill -f ${TAC} >/dev/null 2>&1 ;;
    esac
}

zombies() {
    PID=$(getpid)
    for i in $(ps axo ppid,state,etimes|grep -w Z|awk '{if ($3 >= 300) print $1 }'); do
        if [ $i -eq ${PID} ]; then
            $0 restart
        fi
    done
}

case "$1" in
  start)
    log_daemon_msg "Starting $DESC" "$NAME"
    killagent   
    /bin/rm -f $PID_FILE > /dev/null 2>&1
    start-stop-daemon --oknodo --start --user ecmanaged --pidfile $PID_FILE \
        --background --chdir $DIR --chuid ecmanaged--exec $TWISTD -- -ny $TAC >/dev/null 2>&1
    case "$?" in
        0) log_end_msg 0 ;;
        *) log_end_msg 1; exit 1 ;;
    esac
    ;;
 
  stop)
    log_daemon_msg "Stopping $DESC" "$NAME"
    start-stop-daemon --retry 5 --oknodo --stop --user ecmanaged --signal 9 --quiet --pidfile $PID_FILE 2>/dev/null
    case "$?" in
        0) log_end_msg 0; killagent ;;
        *) log_end_msg 1; killagent ; exit 1 ;;
    esac
    ;;
 
  status)
    log_daemon_msg "Checking status of $DESC" "$NAME"
    PID=$(getpid)
    ls -l /proc/$PID/exe > /dev/null 2>&1
    case "$?" in
        0) log_end_msg 0 ;;
        *) log_end_msg 1; exit 1 ;;
    esac
    ;;
  
  check)
    log_daemon_msg "Checking status of $DESC" "$NAME"
    PID=$(getpid)
    ls -l /proc/$PID/exe > /dev/null 2>&1
    case "$?" in
        0) zombies; log_end_msg 0 ;;
        *) $0 restart ;;
    esac
    ;;
      
  kill)
    killagent
    ;;
  
  restart)
    $0 stop
    $0 start
    ;;
  
  *)
    echo "Usage: /etc/init.d/$NAME {start|stop|restart|status|check}" >&2
    exit 1
    ;;
  
esac

exit 0