sv.sh

#!/usr/bin/env bash
function echo_and_exit() {
  echo $1
  exit 1
}

PID_FILE=$1
if [ ! -e $PID_FILE ]; then
  echo_and_exit "$PID_FILE not exist"
fi

SLAVE_PID=`cat $PID_FILE`
if [[ ! $SLAVE_PID ]]; then
  echo_and_exit "No slave pid in $PID_FILE"
fi

echo "$PID_FILE contains $SLAVE_PID pid"

if [ ! -e "/proc/$SLAVE_PID/fd/1" ]; then
  echo_and_exit "Process with specified pid not exist"
fi

MTIME=$(stat -c"%Y" "/proc/$SLAVE_PID/fd/1")
NOW=$(date +%s)
PASSED=$(( $NOW-$MTIME ))
if (( "$PASSED" > 20 )) ; then
  kill -9 $SLAVE_PID
  echo "Killed $SLAVE_PID"
fi
echo "Passed $PASSED secs"