def run(self):
ds = DataStore()
while not self._shuttingDown:
connected = False
# Create a socket and connect to the cluster data source.
sock = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
try:
sock.connect(
self._getEndpoint(
self.dataSource.hosts[self.lastKnownGoodHost]))
connected = True
except socket.error:
# Keep track of the last good data source within the cluster. If we can't reconnect to the
# same data source, try the next one in the list.
curidx = self.lastKnownGoodHost
while True:
curidx += 1
if curidx >= len(self.dataSource.hosts):
curidx = 0
if curidx == self.lastKnownGoodHost: break
try:
sock.connect(
self._getEndpoint(self.dataSource.hosts[curidx]))
self.lastKnownGoodHost = curidx
connected = True
break
except socket.error:
pass
if connected:
logging.info('Querying data source %s via host %s' %
(self.dataSource.name,
self.dataSource.hosts[self.lastKnownGoodHost]))
xmlbuf = ''
while True:
# Read all of the XML data from the data source.
buf = sock.recv(8192)
if not buf:
break
xmlbuf += buf
sock.close()
# Create an XML parser and parse the buffer
gch = GmondContentHandler()
xml.sax.parseString(xmlbuf, gch)
# Notify the data store that all updates for the cluster are finished.
clusterNode = ds.getNode(gch.getClusterAncestry())
if clusterNode is not None:
clusterNode.setAttr('status', 'up')
else:
logging.error(
'Could not connect to any host for data source %s' %
self.dataSource.name)
ds = DataStore()
cfg = getConfig()
gridKey = Element.generateKey(
['GRID', cfg[GmetadConfig.GRIDNAME]])
clusterKey = Element.generateKey(
['CLUSTER', self.dataSource.name])
gridNode = ds.getNode([str(ds.rootElement), gridKey])
clusterNode = None
if gridNode is not None and str(gridNode) == gridKey:
try:
clusterNode = gridNode[clusterKey]
except KeyError:
clusterNode = Element(
'CLUSTER', {
'NAME': self.dataSource.name,
'LOCALTIME': '%d' % time.time()
})
ds.setNode(clusterNode, gridNode)
if clusterNode is not None:
clusterNode.setAttr('status', 'down')
#clusterNode.localtime = time.time()
ds.updateFinished(clusterNode)
if self._shuttingDown:
break
# Go to sleep for a while.
self._cond.acquire()
self._cond.wait(getRandomInterval(self.dataSource.interval))
self._cond.release()
def run(self):
ds = DataStore()
while not self._shuttingDown:
connected = False
# Create a socket and connect to the cluster data source.
sock = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
try:
sock.connect( self._getEndpoint(self.dataSource.hosts[self.lastKnownGoodHost]) )
connected = True
except socket.error:
# Keep track of the last good data source within the cluster. If we can't reconnect to the
# same data source, try the next one in the list.
curidx = self.lastKnownGoodHost
while True:
curidx += 1
if curidx >= len(self.dataSource.hosts):
curidx = 0
if curidx == self.lastKnownGoodHost: break
try:
sock.connect( self._getEndpoint(self.dataSource.hosts[curidx]) )
self.lastKnownGoodHost = curidx
connected=True
break
except socket.error:
pass
if connected:
logging.info('Querying data source %s via host %s' % (self.dataSource.name, self.dataSource.hosts[self.lastKnownGoodHost]))
xmlbuf = ''
while True:
# Read all of the XML data from the data source.
buf = sock.recv(8192)
if not buf:
break
xmlbuf += buf
sock.close()
# Create an XML parser and parse the buffer
gch = GmondContentHandler()
xml.sax.parseString(xmlbuf, gch)
# Notify the data store that all updates for the cluster are finished.
clusterNode = ds.getNode(gch.getClusterAncestry())
if clusterNode is not None:
clusterNode.setAttr('status', 'up')
else:
logging.error('Could not connect to any host for data source %s' % self.dataSource.name)
ds = DataStore()
cfg = getConfig()
gridKey = Element.generateKey(['GRID',cfg[GmetadConfig.GRIDNAME]])
clusterKey = Element.generateKey(['CLUSTER', self.dataSource.name])
gridNode = ds.getNode([str(ds.rootElement), gridKey])
clusterNode = None
if gridNode is not None and str(gridNode) == gridKey:
try:
clusterNode = gridNode[clusterKey]
except KeyError:
clusterNode = Element('CLUSTER', {'NAME':self.dataSource.name, 'LOCALTIME':'%d' % time.time()})
ds.setNode(clusterNode, gridNode)
if clusterNode is not None:
clusterNode.setAttr('status', 'down')
#clusterNode.localtime = time.time()
ds.updateFinished(clusterNode)
if self._shuttingDown:
break
# Go to sleep for a while.
self._cond.acquire()
self._cond.wait(getRandomInterval(self.dataSource.interval))
self._cond.release()
