#!/usr/bin/env bash

szap=./szap-s2		              # Path to szap binary
szap_args="-x"                        # Argumets for szap
channels=./channels.conf              # Path to channels.conf
timeout=5		              # Timeout in seconds
logfile=szap.log                      # Log file

################################################################################

function RunWithTimeout ()
{
	if [ $# -lt 2 ]; then
		echo "usage: $0 <timeout s> <commandline>"
		return 1
	fi

	timeout=$1

	shift
	
	# Start the command.
	"$@" &

	cmdPid=$!

	# Start the timeout process.
	( sleep $timeout; echo "$1 timed out (pid $cmdPid)"; kill $cmdPid ) &
	
	sleepPid=$!

	# Don't leak the children if we're interrupted by ^C etc.
	trap "kill $cmdPid $sleepPid; exit 5" INT TERM EXIT

	# Block until the command exits or times out.
	wait $cmdPid

	cmdStatus=$?

	# Clear out the ^C trap.
	trap - INT TERM EXIT

	if [ $cmdStatus -le 128 ] ; then
		# The command exited on its own; kill the timeout process.
		# This will kill the background shell, not the sleep
		# process started by it, so the sleep itself may hang around
		# for a while. But, since the subshell will be gone when it
		# exits, nothing will try to kill $cmdPid.
		kill $sleepPid
	fi

	# The caller can check the return value against 128 to see
	# if the command timed out or simply failed.
	return $cmdStatus
}

# Clear logfile
rm $logfile

# Channel counter
i=1

while read line
do
	printf "%03d " $i
	RunWithTimeout $timeout $szap $szap_args -n$i -c $channels >> logfile.log
	case $? in
		0 )
			echo -n "FE_HAS_LOCK "
		;;
		* )
			echo -n "ERROR (exit code $?) "
		;;
	esac

	echo "$line"

	# Inc. channel counter
	i=$((i+1))
done < $channels