def unrecoverable(self):
"""
Boolean value representing whether the current connection can be
recovered.
"""
try:
return bool(zookeeper.is_unrecoverable(self.handle))
except zookeeper.ZooKeeperException:
# guard against invalid handles
return True
def cb_restablish_session(self, e=None):
"""Called on intercept of session expiration to create new session.
This will reconnect to zk, re-establish ephemerals, and
trigger watches.
"""
yield self._reconnect_lock.acquire()
try:
# If its been explicitly closed, don't re-establish.
if self.handle is None:
return
# If its a stale handle (ie. already closed), don't re-establish
try:
zookeeper.is_unrecoverable(self.handle)
except zookeeper.ZooKeeperException:
if e:
raise e
return
# Its already connected, don't re-establish.
if not self.unrecoverable:
return
elif self.connected:
self.close()
self.handle = 0
elif isinstance(self.handle, int):
self.handle = 0
# Re-establish
yield self._cb_restablish_session().addErrback(
self._cb_restablish_errback, e)
except Exception, e:
log.error("error while re-establish %r %s" % (e, e))
def unrecoverable(self):
"""
Boolean value representing whether the current connection can be
recovered.
"""
return bool(zookeeper.is_unrecoverable(self.handle))
