#!/bin/sh
# PCP QA Test No. 1041
# Exercise the libvirt PMDA - install, remove and values.
#
# Copyright (c) 2016 Red Hat.
#
# Expectations:
#   1) libvirtd installed and running
#     - typically from libvirt package
#   2) libvirt Python API available
#     - typically from libvirt-python
#   3) optionally one or more VMs up
#   4) libvirt.hv.* metrics always expected
#   5) with VMs available at least:
#     - libvirt.dominfo.uuid
#     - libvirt.dominfo.name
#     - libvirt.dominfo.memory.{boot,current}
#     - libvirt.dominfo.vcpu.*
#     - libvirt.dominfo.type
#     - libvirt.dominfo.os.type
#     - libvirt.domstats.mem.*
#

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

. ./common.python

[ -d $PCP_PMDAS_DIR/libvirt ] || _notrun "libvirt PMDA directory is not installed"
$python -c "from pcp import pmda" >/dev/null 2>&1
[ $? -eq 0 ] || _notrun "python pcp pmda module not installed"
$python -c "import libvirt" >/dev/null 2>&1
[ $? -eq 0 ] || _notrun "python libvirt module not installed"
$python -c "import lxml" >/dev/null 2>&1
[ $? -eq 0 ] || _notrun "python lxml module not installed"
[ -e /var/run/libvirt/libvirt-sock-ro ] || _notrun "no socket, libvirtd not running?"

status=1	# failure is the default!
$sudo rm -rf $tmp.* $seq.full

pmdalibvirt_remove()
{
    echo
    echo "=== remove libvirt agent ==="
    $sudo ./Remove >$tmp.out 2>&1
    _filter_pmda_remove <$tmp.out
}

pmdalibvirt_install()
{
    # start from known starting points
    cd $PCP_PMDAS_DIR/libvirt
    $sudo ./Remove >/dev/null 2>&1

    cat <<EOF >$tmp.config
[pmda]
#oldapi = False
user = root
uri = qemu:///system
EOF
    echo "pmdalibvirt config:" >> $here/$seq.full
    cat $tmp.config >> $here/$seq.full

    [ -f $PCP_PMDAS_DIR/libvirt/libvirt.conf ] && \
    $sudo cp $PCP_PMDAS_DIR/libvirt/libvirt.conf $tmp.backup
    $sudo cp $tmp.config $PCP_PMDAS_DIR/libvirt/libvirt.conf

    echo
    echo "=== libvirt agent installation ==="
    $sudo ./Install </dev/null >$tmp.out 2>&1
    # Check metrics have appeared ... X metrics and Y values
    # skip lines like ...
    # [Fri Mar 29 21:09:33] pmdalibvirt(21564) Error: pmdaCacheOp: $PCP_VAR_DIR/config/pmda/140.0: empty file?
    _filter_pmda_install <$tmp.out \
    | sed \
        -e '/^Waiting for pmcd/s/\.\.\.[. ]*$/DOTS/' \
	-e "\\;Error: pmdaCacheOp: \$PCP_VAR_DIR/config/pmda/.*: empty file?;d" \
    | $PCP_AWK_PROG '
/Check libvirt metrics have appeared/  { if ($7 >= 67 && $7 <= 250) $7 = "X"
                                          if ($10 >= 8 && $10 <= 5000) $10 = "Y"
                                       }
/ warnings, /                          { if ($9 >= 67 && $9 <= 250) $9 = "X"
                                          if ($12 >= 14 && $12 <= 50) $12 = "Y"
                                       }
                                       { print }'
}

pmdalibvirt_cleanup()
{
    if [ -f $tmp.backup ]; then
	$sudo cp $tmp.backup $PCP_PMDAS_DIR/libvirt/libvirt.conf
	$sudo rm $tmp.backup
    else
	$sudo rm -f $PCP_PMDAS_DIR/libvirt/libvirt.conf
    fi
    # note: _restore_auto_restart pmcd done in _cleanup_pmda()
    _cleanup_pmda libvirt
}

_prepare_pmda libvirt
trap "pmdalibvirt_cleanup; exit \$status" 0 1 2 3 15

_stop_auto_restart pmcd

_filter()
{
    sed \
	-e '/No value(s) available/d' \
    #end
}

# real QA test starts here
pmdalibvirt_install

echo
echo "=== verify metric values ==="
echo "from pminfo:" >>$here/$seq.full
pminfo -v libvirt 2>&1 \
| tee -a $here/$seq.full \
| _filter

pmdalibvirt_remove
status=0
exit
