#! /bin/sh
# newswatch [spaceunit spacemin [batchmax]]
# look for anomalies, notably locks present a long time

# =()<. ${NEWSCONFIG-@<NEWSCONFIG>@}>()=
. ${NEWSCONFIG-/usr/local/libexec/cnews/config}

PATH=$NEWSCTL/bin:$NEWSBIN/maint:$NEWSBIN:$NEWSPATH ; export PATH
umask $NEWSUMASK

tmp=/tmp/newsw$$
>$tmp

cd $NEWSCTL

# look for old locks
locks="`echo LOCK* $NEWSARTS/out.going/*/L*`"
if test -r watchtime -a " $locks" != " LOCK* $NEWSARTS/out.going/*/L*"
then
	trouble="`find $locks ! -newer watchtime -print 2>/dev/null`"
	if test " $trouble" != " "
	then
		echo 'Suspiciously old locks:'
		ls -ldtr $trouble
		echo
	fi >>$tmp
fi

# check for space shortages
shortage=n
if test " $1" != " "
then
	for fs in incoming articles control outbound
	do
		if test " `spacefor $1 $fs`" -lt $2
		then
			echo "spacefor reports disk shortage in \`$fs'" >>$tmp
			shortage=y
		fi
	done
	if test " $shortage" = " y"
	then
		echo >>$tmp
	fi
fi

# look for input pileups
if test " $3" != " "
then
	n="`ls $NEWSARTS/in.coming | egrep '^[0-9]' | wc -l`"
	if test " $n" -gt " $3"
	then
		echo "There are a great many spooled input batches ($n)."
		echo
	fi
fi >>$tmp

# report any problems
report -u 'news-system anomalies detected by newswatch' <$tmp
rm -f $tmp

# update watchtime, which is used for the old-locks check
if test -r watchtime
then
	age=`cat watchtime`
fi
if test " $age" = " "
then
	age=0
fi
now=`now`
if test " $now" = " "
then
	now=0
fi
if awk "END { if ($age < $now - 8*3600) exit 0 ; else exit 1 ; }" /dev/null
then
	now >watchtime
fi

# and run any local stuff to deal with space shortages
spaceshort $shortage 2>&1 | report -u "spaceshort output"