def metric_handler(name):
if time.time() - ZK_LAST_METRICS['time'] > TIME_BETWEEN_QUERIES:
zk = ZooKeeperServer(metric_handler.host, metric_handler.port, 5)
try:
metric_handler.info = zk.get_stats()
except Exception, e:
print >>sys.stderr, e
metric_handler.info = {}
def get_cluster_stats(servers):
""" Get stats for all the servers in the cluster """
stats = {}
for host, port in servers:
try:
zk = ZooKeeperServer(host, port)
stats["%s:%s" % (host, port)] = zk.get_stats()
except socket.error, e:
# ignore because the cluster can still work even
# if some servers fail completely
# this error should be also visible in a variable
# exposed by the server in the statistics
logging.info('unable to connect to server '\
'"%s" on port "%s"' % (host, port))
