def __init__(self):
# Replace the objects attributes with the original
# attributes and data.
self.__dict__ = DataStore._shared_state
# Make sure that the DataStore object is only initialized once.
if not DataStore._initialized:
# Allocate a lock that will be used by all threads
# that are reading or writing to the data store.
self.lock = thread.allocate_lock()
self.lock.acquire()
self.rootElement = None
# Initialize the data store with the GANGLIA_XML and GRID tags.
# Data store should never be completely empty. Even if there are
# no reporting data sources the web front end depends on having
# at least a GANGLIA_XML tag and a nested GRID tag.
cfg = getConfig()
self.setNode(Element('GANGLIA_XML', {'VERSION':cfg.VERSION, 'SOURCE':'gmetad'}))
self.setNode(Element('GRID', {'NAME':cfg[GmetadConfig.GRIDNAME], 'AUTHORITY':cfg[GmetadConfig.AUTHORITY], 'LOCALTIME':'%d' % time.time()}), self.rootElement)
self.lock.release()
# Start up the grid summary thread.
self.gridSummary = DataStoreGridSummary()
self.gridSummary.start()
# Start up the plugin notifier.
self.notifier = GmetadNotifier()
self.notifier.start()
DataStore._initialized = True
