def _send_options_message(self):
if self.cql_version is None and (not self.compression or
not locally_supported_compressions):
log.debug(
"Not sending options message for new connection(%s) to %s "
"because compression is disabled and a cql version was not "
"specified", id(self), self.host)
self._compressor = None
self.cql_version = DEFAULT_CQL_VERSION
self._send_startup_message()
else:
log.debug(
"Sending initial options message for new connection (%s) to %s",
id(self), self.host)
self.send_msg(OptionsMessage(), self.get_request_id(),
self._handle_options_response)
def __init__(self, connection, owner):
self._exception = None
self._event = Event()
self.connection = connection
self.owner = owner
log.debug(
"Sending options message heartbeat on idle connection (%s) %s",
id(connection), connection.host)
with connection.lock:
if connection.in_flight <= connection.max_request_id:
connection.in_flight += 1
connection.send_msg(OptionsMessage(),
connection.get_request_id(),
self._options_callback)
else:
self._exception = Exception(
"Failed to send heartbeat because connection 'in_flight' exceeds threshold"
)
self._event.set()
