### BEGIN INIT INFO
# Provides:          amphora-agent
# Required-Start:    $remote_fs $syslog $network certs-ramfs
# Required-Stop:     $remote_fs $syslog $network
# Default-Start:     2 3 4 5
# Default-Stop:      0 1 6
# Short-Description: Runs the Amphora Agent processes
# Description:       This script runs Octavia Amphora Agent processes.
#                    This script will start the Amphora Agent services
#                    and kill them.
### END INIT INFO

# Using the lsb functions to perform the operations.
. /lib/lsb/init-functions
# Process name ( For display )
NAME=amphora-agent
# Daemon name, where is the actual executable
DAEMON=/usr/local/bin/amphora-agent
# pid file for the daemon
PIDFILE=/var/run/amphora-agent.pid

# If the daemon is not there, then exit.
test -x $DAEMON || exit 5

case $1 in
 start)
  # Checked the PID file exists and check the actual status of process
  if [ -e $PIDFILE ]; then
   status_of_proc -p $PIDFILE $DAEMON "$NAME process" && status="0" || status="$?"
   # If the status is SUCCESS then don't need to start again.
   if [ $status = "0" ]; then
    exit # Exit
   fi
  fi
  # Start the daemon.
  log_daemon_msg "Starting the process" "$NAME"
  # Start the daemon with the help of start-stop-daemon
  # Log the message appropriately
  if start-stop-daemon --start -m --quiet --oknodo --pidfile $PIDFILE --startas $DAEMON -- --config-file /etc/octavia/amphora-agent.conf ; then
   log_end_msg 0
  else
   log_end_msg 1
  fi
  ;;
 stop)
  # Stop the daemon.
  if [ -e $PIDFILE ]; then
   status_of_proc -p $PIDFILE $DAEMON "Stopping the $NAME process" && status="0" || status="$?"
   if [ "$status" = 0 ]; then
    start-stop-daemon --stop --quiet --oknodo --pidfile $PIDFILE
    /bin/rm -rf $PIDFILE
   fi
  else
   log_daemon_msg "$NAME process is not running"
   log_end_msg 0
  fi
  ;;
 restart)
  # Restart the daemon.
  $0 stop && sleep 2 && $0 start
  ;;
 *)
  # For invalid arguments, print the usage message.
  echo "Usage: $0 {start|stop|restart|reload|status}"
  exit 2
  ;;
esac