#!/bin/bash

CASSANDRA_DIR=${HOME}/apache-cassandra-1.1.4
LOGDIR=${HOME}/ONOS/onos-logs
CASSANDRA_LOG=$LOGDIR/cassandara.onos1vpc.log

function lotate {
logfile=$1
nr_max=$2
if [ -f $logfile ]; then
  for i in `seq $(expr 10 - 1) -1 1`; do
    if [ -f ${logfile}.${i} ]; then
      mv -f ${logfile}.${i} ${logfile}.`expr $i + 1`
    fi
  done
  mv $logfile $logfile.1
fi
}

function start {
  if [ ! -d ${LOGDIR} ]; then
    mkdir -p ${LOGDIR}
  fi
  echo "rotate log: $log"
  if [ -f $CASSANDRA_LOG ]; then
    lotate $CASSANDRA_LOG
  fi

  # Run cassandra 
  echo "Starting cassandra"
  $CASSANDRA_DIR/bin/cassandra > $CASSANDRA_LOG 2>&1 
}

function stop {
  # Kill the existing processes
  capid=`ps -edalf |grep java |grep apache-cassandra | awk '{print $4}'`
  pids="$capid"
  for p in ${pids}; do
    if [ x$p != "x" ]; then
      sudo kill -KILL $p
      echo "Killed existing prosess (pid: $p)"
    fi
  done
}

#function deldb {
#   # Delete the berkeley db database
#   if [ -d "/tmp/cassandra.titan" ]; then
#      rm -rf /tmp/cassandra.titan
#      mkdir /tmp/cassandra.titan
#   fi
#}

case "$1" in
  start)
    stop
    start 
    ;;
  stop)
    stop
    ;;
#  deldb)
#    deldb
#    ;;
  status)
    n=`ps -edalf |grep java |grep apache-cassandra | wc -l`
    echo "$n instance of cassandra running"
    $CASSANDRA_DIR/bin/nodetool ring 
    ;;
  *)
    echo "Usage: $0 {start|stop|restart|status}"
    exit 1
esac