#!/bin/ksh
# Change the below to your SEA device
# To determine this, at the VIO Server command line : lsdev -virtual
# and look for the SEA device
#
# WARNING: stats are per snapshot and NOT per second
#
export interface=en3
export timestamp=$1

if [ "$timestamp" == "T0001" ]
then
	# truncate and start log
	echo SEA,$interface stats are per snapshot not per second,ReadBytes,WriteBytes,ReadPackets,WritePackets >sea.log
	echo SEA,T0001,0,0,0,0 >>sea.log
	# seed the database 
	entstat $interface 2>/dev/null | grep ^Bytes: | sed 's/Bytes://g'     >sea.bytes
	entstat $interface 2>/dev/null | grep ^Packets: | sed 's/Packets://g' >sea.packets
else
	# read the database
	read oldrbytes oldwbytes <sea.bytes
	read oldrpackets oldwpackets <sea.packets
	#debug echo a=$oldrbytes b=$oldwbytes c=$oldrpackets d=$oldwpackets

	entstat $interface 2>/dev/null | grep ^Bytes: | sed 's/Bytes://g' | read newrbytes   newwbytes
	entstat $interface 2>/dev/null | grep ^Packets: | sed 's/Packets://g' | read newrpackets newwpackets

	#debug echo a=$newrbytes b=$newwbytes c=$newrpackets d=$newwpackets

	# do the maths
integer deltarbytes 
integer deltawbytes 
integer deltarpackets 
integer deltawpackets 
let deltarbytes=$newrbytes-$oldrbytes
let deltawbytes=$newwbytes-$oldwbytes
let deltarpackets=$newrpackets-$oldrpackets
let deltawpackets=$newwpackets-$oldwpackets

	# debug echo deltarbytes= $deltarbytes
	# debug echo deltawbytes= $deltarbytes
	# debug echo deltarpackets= $deltarpackets
	# debug echo deltawpackets= $deltawpackets

	# save the database
	echo $newrbytes $newwbytes     >sea.bytes
	echo $newrpackets $newwpackets >sea.packets
	
	# write the log
	echo SEA,$timestamp,$deltarbytes,$deltawbytes,$deltarpackets,$deltawpackets >>sea.log
fi