def describe_topic(state: State, topic_name: str, consumers: bool, output_format: str):
"""Describe a topic.
Returns information on a given topic and its partitions, with the option of including
all consumer groups that read from the topic.
"""
topic = state.cluster.topic_controller.get_cluster_topic(topic_name)
output_dict = {
"topic": topic_name,
"partitions": [partition.as_dict() for partition in topic.partitions],
"config": topic.config,
}
if consumers:
consumergroup_controller = ConsumerGroupController(state.cluster)
groups = consumergroup_controller.list_consumer_groups()
consumergroups = [
group_name
for group_name in groups
if topic_name in consumergroup_controller.get_consumergroup(group_name).topics
]
output_dict["consumergroups"] = consumergroups
click.echo(format_output(output_dict, output_format))
def test_get_consumer_group(partly_read_consumer_group: str,
consumergroup_controller: ConsumerGroupController):
instance = consumergroup_controller.get_consumergroup(
partly_read_consumer_group)
assert isinstance(instance, ConsumerGroup)