def create_connection(self, for_listening=False):
"""Create and return connection to any available host.
:return: created connection
:raise: ConnectionException if all hosts are not reachable
"""
host_count = len(self._connection_host_param_list)
connection_attempts = host_count
pika_next_connection_num = self._next_connection_num()
while connection_attempts > 0:
try:
return self.create_host_connection(pika_next_connection_num,
for_listening)
except pika_pool.Connection.connectivity_errors as e:
LOG.warning("Can't establish connection to host. %s", e)
except pika_drv_exc.HostConnectionNotAllowedException as e:
LOG.warning("Connection to host is not allowed. %s", e)
connection_attempts -= 1
pika_next_connection_num += 1
pika_next_connection_num %= host_count
raise pika_drv_exc.EstablishConnectionException(
"Can not establish connection to any configured RabbitMQ host: " +
str(self._connection_host_param_list))
def create_connection(self, for_listening=False):
"""Create and return connection to any available host.
:return: created connection
:raise: ConnectionException if all hosts are not reachable
"""
with self._connection_lock:
host_count = len(self._host_list)
connection_attempts = host_count
while connection_attempts > 0:
self._cur_connection_host_num += 1
self._cur_connection_host_num %= host_count
try:
return self._create_host_connection(
self._cur_connection_host_num, for_listening
)
except pika_drv_cmns.PIKA_CONNECTIVITY_ERRORS as e:
LOG.warning("Can't establish connection to host. %s", e)
except pika_drv_exc.HostConnectionNotAllowedException as e:
LOG.warning("Connection to host is not allowed. %s", e)
connection_attempts -= 1
raise pika_drv_exc.EstablishConnectionException(
"Can not establish connection to any configured RabbitMQ "
"host: " + str(self._host_list)
)