#! /bin/sh
# PCP QA Test No. 348
# Install/Remove for Linux KVM pmda
#
# Copyright (c) 2008 Aconex.  All Rights Reserved.
#

seq=`basename $0`
echo "QA output created by $seq"

# get standard filters
. ./common.product
. ./common.filter
. ./common.check

[ -d $PCP_PMDAS_DIR/kvm ] || _notrun "KVM PMDA not installed"
[ $PCP_PLATFORM = linux ] || _notrun "KVM only exists on Linux"
perl -e "use PCP::PMDA" >/dev/null 2>&1
[ $? -eq 0 ] || _notrun "perl PCP::PMDA module not installed"
kvm_stats_path=/sys/kernel/debug/kvm
$sudo [ -d $kvm_stats_path ] || _notrun "KVM sysfs interface not available"
count=`$sudo ls $kvm_stats_path | wc -l`
[ "$count" -eq 0 ] && _notrun "KVM kernel instrumentation is disabled"

status=1
done_clean=false
rm -f $seq.full

install_on_cleanup=false
pminfo kvm >/dev/null 2>&1 && install_on_cleanup=true

_cleanup()
{
    if $done_clean
    then
	:
    else
	if [ -f $tmp.pmcd.conf ]
	then
	    $sudo cp $tmp.pmcd.conf $PCP_PMCDCONF_PATH
	    rm -f $tmp.pmcd.conf
	fi
	_service pcp restart | _filter_pcp_start
	_wait_for_pmcd
	_wait_for_pmlogger
	if $install_on_cleanup
	then
	    ( cd $PCP_PMDAS_DIR/kvm; $sudo ./Install </dev/null >/dev/null 2>&1 )
	else
	    ( cd $PCP_PMDAS_DIR/kvm; $sudo ./Remove >/dev/null 2>&1 )
	fi
	done_clean=true
    fi
    $sudo rm -f $tmp.*
    exit $status
}

trap "_cleanup" 0 1 2 3 15

# real QA test starts here
home=$PCP_PMDAS_DIR
iam=kvm
if [ ! -d $home/$iam ]
then
    echo "Where is $home/$iam?"
    exit 1
fi
cd $home/$iam
unset ROOT MAKEFLAGS

# copy the pmcd config file to restore state later.
cp $PCP_PMCDCONF_PATH $tmp.pmcd.conf

# start from a known starting point
$sudo ./Remove >/dev/null 2>&1
$sudo rm -f pmns domain.h

echo
echo "=== $iam agent installation ==="
$sudo ./Install </dev/null >$tmp.out 2>&1
# Check kvm metrics have appeared ... X metrics and Y values
_filter_pmda_install <$tmp.out \
| $PCP_AWK_PROG '
/Check kvm metrics have appeared/	{ if ($7 >= 30 && $7 <= 40) $7 = "X"
					  if ($10 >= 30 && $10 <= 40) $10 = "Y"
					}
					{ print }'

if pminfo -v $iam
then
    :
else
    echo "... failed! ... here is the Install log ..."
    cat $tmp.out
fi

echo
echo "=== validate values ==="
rm -f $tmp.stats $tmp.values $tmp.probe $tmp.diff
pmprobe -v $iam | LC_COLLATE=POSIX sort > $tmp.probe
echo "from pmprobe ..." >>$here/$seq.full
cat $tmp.probe >>$here/$seq.full
for stat in `$sudo find $kvm_stats_path -mindepth 1`
do
    value=`$sudo cat $stat`
    echo $stat 1 $value | sed -e "s,$kvm_stats_path/,kvm.,g" >> $tmp.stats
done
LC_COLLATE=POSIX sort $tmp.stats > $tmp.values
echo "from /sys/kernel/debug/kvm ..." >>$here/$seq.full
cat $tmp.values >>$here/$seq.full
LC_COLLATE=POSIX join $tmp.probe $tmp.values >$tmp.all
echo >>$here/$seq.full
cat $tmp.all >>$here/$seq.full

echo
echo "=== check values ==="
cat $tmp.all \
| while read metric n1 vpcp n2 vsys
do
    # test for Linux kernel version-specific metrics ... these may not be present
    #
    case "$metric"
    in
	kvm.max_mmu_page_hash_collisions)	;;
	kvm.req_event)				;;
	kvm.halt_successful_poll)		;;
	kvm.halt_poll_invalid)			;;
	kvm.halt_attempted_poll)		# all of the above fallthrough
	    _within_tolerance $metric $vpcp $vsys 2%
	    [ $? -eq 0 ] || echo Platform $metric is out of range $vpcp vs $vsys
	    ;;
	*)
	    if [ "$n1" = 1 -a "$n2" = 1 ]
	    then
		_within_tolerance $metric $vpcp $vsys 2% -v
	    else
		echo "$metric: number of values not 1 as expected: pcp $n1 /sys $n2"
	    fi
	    ;;
    esac
done | tee -a $here/$seq.full

echo
echo "=== remove $iam agent ==="
$sudo ./Remove >$tmp.out 2>&1
_filter_pmda_remove <$tmp.out

status=0
exit
