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import pytest
from logging import info
from test.testutil import env_kafka_version, random_string
from threading import Event, Thread
from time import time, sleep
from kafka.admin import (
ACLFilter, ACLOperation, ACLPermissionType, ResourcePattern, ResourceType, ACL, ConfigResource, ConfigResourceType)
from kafka.errors import (NoError, GroupCoordinatorNotAvailableError)
@pytest.mark.skipif(env_kafka_version() < (0, 11), reason="ACL features require broker >=0.11")
def test_create_describe_delete_acls(kafka_admin_client):
"""Tests that we can add, list and remove ACLs
"""
# Check that we don't have any ACLs in the cluster
acls, error = kafka_admin_client.describe_acls(
ACLFilter(
principal=None,
host="*",
operation=ACLOperation.ANY,
permission_type=ACLPermissionType.ANY,
resource_pattern=ResourcePattern(ResourceType.TOPIC, "topic")
)
)
assert error is NoError
assert len(acls) == 0
# Try to add an ACL
acl = ACL(
principal="User:test",
host="*",
operation=ACLOperation.READ,
permission_type=ACLPermissionType.ALLOW,
resource_pattern=ResourcePattern(ResourceType.TOPIC, "topic")
)
result = kafka_admin_client.create_acls([acl])
assert len(result["failed"]) == 0
assert len(result["succeeded"]) == 1
# Check that we can list the ACL we created
acl_filter = ACLFilter(
principal=None,
host="*",
operation=ACLOperation.ANY,
permission_type=ACLPermissionType.ANY,
resource_pattern=ResourcePattern(ResourceType.TOPIC, "topic")
)
acls, error = kafka_admin_client.describe_acls(acl_filter)
assert error is NoError
assert len(acls) == 1
# Remove the ACL
delete_results = kafka_admin_client.delete_acls(
[
ACLFilter(
principal="User:test",
host="*",
operation=ACLOperation.READ,
permission_type=ACLPermissionType.ALLOW,
resource_pattern=ResourcePattern(ResourceType.TOPIC, "topic")
)
]
)
assert len(delete_results) == 1
assert len(delete_results[0][1]) == 1 # Check number of affected ACLs
# Make sure the ACL does not exist in the cluster anymore
acls, error = kafka_admin_client.describe_acls(
ACLFilter(
principal="*",
host="*",
operation=ACLOperation.ANY,
permission_type=ACLPermissionType.ANY,
resource_pattern=ResourcePattern(ResourceType.TOPIC, "topic")
)
)
assert error is NoError
assert len(acls) == 0
@pytest.mark.skipif(env_kafka_version() < (0, 11), reason="Describe config features require broker >=0.11")
def test_describe_configs_broker_resource_returns_configs(kafka_admin_client):
"""Tests that describe config returns configs for broker
"""
broker_id = kafka_admin_client._client.cluster._brokers[0].nodeId
configs = kafka_admin_client.describe_configs([ConfigResource(ConfigResourceType.BROKER, broker_id)])
assert len(configs) == 1
assert configs[0].resources[0][2] == ConfigResourceType.BROKER
assert configs[0].resources[0][3] == str(broker_id)
assert len(configs[0].resources[0][4]) > 1
@pytest.mark.xfail(condition=True,
reason="https://github.com/dpkp/kafka-python/issues/1929",
raises=AssertionError)
@pytest.mark.skipif(env_kafka_version() < (0, 11), reason="Describe config features require broker >=0.11")
def test_describe_configs_topic_resource_returns_configs(topic, kafka_admin_client):
"""Tests that describe config returns configs for topic
"""
configs = kafka_admin_client.describe_configs([ConfigResource(ConfigResourceType.TOPIC, topic)])
assert len(configs) == 1
assert configs[0].resources[0][2] == ConfigResourceType.TOPIC
assert configs[0].resources[0][3] == topic
assert len(configs[0].resources[0][4]) > 1
@pytest.mark.skipif(env_kafka_version() < (0, 11), reason="Describe config features require broker >=0.11")
def test_describe_configs_mixed_resources_returns_configs(topic, kafka_admin_client):
"""Tests that describe config returns configs for mixed resource types (topic + broker)
"""
broker_id = kafka_admin_client._client.cluster._brokers[0].nodeId
configs = kafka_admin_client.describe_configs([
ConfigResource(ConfigResourceType.TOPIC, topic),
ConfigResource(ConfigResourceType.BROKER, broker_id)])
assert len(configs) == 2
for config in configs:
assert (config.resources[0][2] == ConfigResourceType.TOPIC
and config.resources[0][3] == topic) or \
(config.resources[0][2] == ConfigResourceType.BROKER
and config.resources[0][3] == str(broker_id))
assert len(config.resources[0][4]) > 1
@pytest.mark.skipif(env_kafka_version() < (0, 11), reason="Describe config features require broker >=0.11")
def test_describe_configs_invalid_broker_id_raises(kafka_admin_client):
"""Tests that describe config raises exception on non-integer broker id
"""
broker_id = "str"
with pytest.raises(ValueError):
configs = kafka_admin_client.describe_configs([ConfigResource(ConfigResourceType.BROKER, broker_id)])
@pytest.mark.skipif(env_kafka_version() < (0, 11), reason='Describe consumer group requires broker >=0.11')
def test_describe_consumer_group_does_not_exist(kafka_admin_client):
"""Tests that the describe consumer group call fails if the group coordinator is not available
"""
with pytest.raises(GroupCoordinatorNotAvailableError):
group_description = kafka_admin_client.describe_consumer_groups(['test'])
@pytest.mark.skipif(env_kafka_version() < (0, 11), reason='Describe consumer group requires broker >=0.11')
def test_describe_consumer_group_exists(kafka_admin_client, kafka_consumer_factory, topic):
"""Tests that the describe consumer group call returns valid consumer group information
This test takes inspiration from the test 'test_group' in test_consumer_group.py.
"""
consumers = {}
stop = {}
threads = {}
random_group_id = 'test-group-' + random_string(6)
group_id_list = [random_group_id, random_group_id + '_2']
generations = {group_id_list[0]: set(), group_id_list[1]: set()}
def consumer_thread(i, group_id):
assert i not in consumers
assert i not in stop
stop[i] = Event()
consumers[i] = kafka_consumer_factory(group_id=group_id)
while not stop[i].is_set():
consumers[i].poll(20)
consumers[i].close()
consumers[i] = None
stop[i] = None
num_consumers = 3
for i in range(num_consumers):
group_id = group_id_list[i % 2]
t = Thread(target=consumer_thread, args=(i, group_id,))
t.start()
threads[i] = t
try:
timeout = time() + 35
while True:
for c in range(num_consumers):
# Verify all consumers have been created
if c not in consumers:
break
# Verify all consumers have an assignment
elif not consumers[c].assignment():
break
# If all consumers exist and have an assignment
else:
info('All consumers have assignment... checking for stable group')
# Verify all consumers are in the same generation
# then log state and break while loop
for consumer in consumers.values():
generations[consumer.config['group_id']].add(consumer._coordinator._generation.generation_id)
is_same_generation = any([len(consumer_generation) == 1 for consumer_generation in generations.values()])
# New generation assignment is not complete until
# coordinator.rejoining = False
rejoining = any([consumer._coordinator.rejoining
for consumer in list(consumers.values())])
if not rejoining and is_same_generation:
break
else:
sleep(1)
assert time() < timeout, "timeout waiting for assignments"
info('Group stabilized; verifying assignment')
output = kafka_admin_client.describe_consumer_groups(group_id_list)
assert len(output) == 2
consumer_groups = set()
for consumer_group in output:
assert(consumer_group.group in group_id_list)
if consumer_group.group == group_id_list[0]:
assert(len(consumer_group.members) == 2)
else:
assert(len(consumer_group.members) == 1)
for member in consumer_group.members:
assert(member.member_metadata.subscription[0] == topic)
assert(member.member_assignment.assignment[0][0] == topic)
consumer_groups.add(consumer_group.group)
assert(sorted(list(consumer_groups)) == group_id_list)
finally:
info('Shutting down %s consumers', num_consumers)
for c in range(num_consumers):
info('Stopping consumer %s', c)
stop[c].set()
threads[c].join()
threads[c] = None
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