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#! /bin/sh
# PCP bridge Providers
#
# Copyright (C) 2013 Red Hat, Inc. All rights reserved.
#
# This library is free software; you can redistribute it and/or
# modify it under the terms of the GNU Lesser General Public
# License as published by the Free Software Foundation; either
# version 2.1 of the License, or (at your option) any later version.
#
# This library is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
# Lesser General Public License for more details.
#
# You should have received a copy of the GNU Lesser General Public
# License along with this library; if not, write to the Free Software
# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
#
# Authors: Frank Ch. Eigler <fche@redhat.com>
#
#
# This script refreshes WBEM/CIM MOF & REG files from the current PCP PMNS,
# if necessary, and reloads the new MOF/REGs into the CIMMON.
#
# The PCP PMNS changes infrequently (when the sysadmin manuall installs or
# removes pcp PMDA (agent) modules in /var/lib/pcp/pmdas/*).
#
# This script encodes the PCP->CIM metric name-mapping convention of replacing
# dots with double-underscores, which lmi/pcp/metric.py will dutifully undo.
_LOCALSTATEDIR=/var
_DATADIR=/usr/share
NAME=openlmi-providers
PYTHON2_SITELIB=/usr/lib/python2.7/site-packages
PCP_PMNS=$_LOCALSTATEDIR/lib/pcp/pmns/root
PCP_HOST=${1-localhost} # or local:// for pcp 3.9+
BASEMOFFILE=$_DATADIR/$NAME/60_LMI_PCP.mof
MOFREGDIR=$_LOCALSTATEDIR/lib/$NAME
STAMPFILE=$MOFREGDIR/stamp
MOFFILE=$MOFREGDIR/60_LMI_PCP_PMNS.mof
REGFILE=$MOFREGDIR/60_LMI_PCP_PMNS.reg
PROVIDER=$PYTHON2_SITELIB/lmi/pcp/metric.py
if [ ! -f $PROVIDER ]; then
echo "Cannot find $PROVIDER" 1>&2
exit 1
fi
set -e
echo Refreshing PCP_Metric CIMMON classes from current PCP PMNS
# quick liveness test
pcp -h $PCP_HOST
if [ -s $PCP_PMNS -a $PCP_PMNS -nt $STAMPFILE ]; then
if [ -f $MOFFILE -a -f $REGFILE ]; then
echo Unregistering $BASEMOFFILE
echo Unregistering previous $MOFFILE
echo Unregistering previous $REGFILE
openlmi-mof-register unregister $BASEMOFFILE $MOFFILE $REGFILE || :
fi
echo Generating $MOFFILE
pminfo -h $PCP_HOST | sed -e 's,\.,__,g' |
awk '{print "class PCP_Metric_" $1 " : PCP_MetricValue { } ;" }' > $MOFFILE
echo Generating $REGFILE
pminfo -h $PCP_HOST | sed -e 's,\.,__,g' |
awk '{print "[PCP_Metric_" $1 "]"
print " provider: '$PROVIDER'"
print " location: pyCmpiProvider"
print " type: instance"
print " namespace: root/cimv2"
print " group: pcp"
print ""}' > $REGFILE
echo Registering $BASEMOFFILE
echo Registering new $MOFFILE
echo Registering new $REGFILE
openlmi-mof-register register $BASEMOFFILE $MOFFILE $REGFILE 2>&1 | # filter out two noise diagnostics
egrep -v 'Warning: the instance already exists.|In this implementation, that means it cannot be changed.' || :
touch $STAMPFILE
else
echo Doing nothing, $PCP_PMNS older than $STAMPFILE
fi
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