def writeRootSummary(self):
''' This method updates the RRD summary files.'''
ds = DataStore()
rootNode = ds.rootElement
# If there isn't a root node then there is not need to continue.
if rootNode is None: return
# Get a lock on the data store.
ds.acquireLock(self)
try:
gmetadConfig = getConfig()
# Create the summary RRD base path and validate it
rootPath = '%s/__SummaryInfo__' % self.cfg[RRDPlugin.RRD_ROOTDIR]
self._checkDir(rootPath)
# Update metrics for each grid node (there should only be one.)
for gridNode in rootNode:
# If there isn't any summary data, then no need to continue.
if not hasattr(gridNode, 'summaryData'):
continue
# Update metrics RRDs for each cluster summary in the grid
for metricNode in gridNode.summaryData['summary'].itervalues():
# Create the summary RRD final path and validate it.
rrdPath = '%s/%s.rrd' % (rootPath,
metricNode.getAttr('name'))
# if the RRD file doesn't exist then create it
if not os.path.isfile(rrdPath):
self._createRRD(rootNode, metricNode, rrdPath, 15,
True)
#need to do some error checking here if the createRRD failed
# Update the RRD file.
self._updateRRD(rootNode, metricNode, rrdPath, True)
except Exception, e:
logging.error('Error writing to summary RRD %s' % str(e))
try:
pffd = open(gmetadConfig[GmetadConfig.PIDFILE], 'w')
pffd.write('%d\n' % os.getpid())
logging.debug('Wrote pid %d to pidfile %s' % (os.getpid(), gmetadConfig[GmetadConfig.PIDFILE]))
pffd.close()
pffd = open(gmetadConfig[GmetadConfig.PIDFILE], 'r')
except Exception as e:
logging.error('Unable to write PID %d to %s (%s)' % (os.getpid(), gmetadConfig[GmetadConfig.PIDFILE], e))
sys.exit()
# Switch to non-priviledged user if running as root
if not os.getuid():
setuid()
# Initialize the data store with the notifier and summery threads and plugins
dataStore = DataStore()
readers = []
xmlSocket = XmlSocket()
interactiveSocket = InteractiveSocket()
try:
try:
# Create the gmond data source reader threads.
for ds in gmetadConfig[GmetadConfig.DATA_SOURCE]:
readers.append(GmondReader(ds))
gr = readers[len(readers)-1]
gr.start()
# Open the XML ports
xmlSocket.open(port=int(gmetadConfig[GmetadConfig.XML_PORT]))
interactiveSocket.open(port=int(gmetadConfig[GmetadConfig.INTERACTIVE_PORT]))
# Use asyncore to handle all of the network socket traffic
