#!/bin/sh
# PCP QA Test No. 973
# Exercise the zswap PMDA using the running kernel.
#
# Copyright (c) 2014 Red Hat.
#

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

# get standard environment, filters and checks
. ./common.product
. ./common.filter
. ./common.check

test -d /sys/kernel/debug/zswap || _notrun "No kernel support for zswap"

status=1	# failure is the default!
done_clean=false
rm -f $seq.full

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

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

trap "_cleanup; exit \$status" 0 1 2 3 15

_filter_zswap()
{
    # filter metric values for deterministic output
    tee -a $here/$seq.full | sed \
        -e 's/value [0-9][0-9]*/value NUMBER/'
}

# real QA test starts here
home=$PCP_PMDAS_DIR
iam=zswap
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 $PCP_RC_DIR/pmcd stop

echo
echo "=== $iam agent installation ==="
$sudo ./Install </dev/null >$tmp.out 2>&1
# Check zswap metrics have appeared ... X metrics and Y values
_filter_pmda_install <$tmp.out \
| sed \
        -e '/^Waiting for pmcd/s/\.\.\.[. ]*$/DOTS/' \
        -e 's/[0-9][0-9]* warnings, //' \
| $PCP_AWK_PROG '
/Check zswap metrics have appeared/    { if ($7 >= 8 && $7 <= 20) $7 = "X"
                                         if ($10 >= 8 && $10 <= 20) $10 = "Y"
                                       }
                                       { print }'

# pmcd should have been started by the Install process - check
if pminfo -v $iam > $tmp.info 2> $tmp.err
then
    :
else
    echo "... failed! ... here is the Install log ..."
    cat $tmp.out
fi
cat $tmp.info $tmp.err | _filter_zswap

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

# success, all done
status=0
exit