本文整理汇总了Python中cassandra.policies.DowngradingConsistencyRetryPolicy.on_write_timeout方法的典型用法代码示例。如果您正苦于以下问题：Python DowngradingConsistencyRetryPolicy.on_write_timeout方法的具体用法？Python DowngradingConsistencyRetryPolicy.on_write_timeout怎么用？Python DowngradingConsistencyRetryPolicy.on_write_timeout使用的例子？那么, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在类cassandra.policies.DowngradingConsistencyRetryPolicy的用法示例。
在下文中一共展示了DowngradingConsistencyRetryPolicy.on_write_timeout方法的2个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的Python代码示例。
示例1: test_write_timeout
# 需要导入模块: from cassandra.policies import DowngradingConsistencyRetryPolicy [as 别名]
# 或者: from cassandra.policies.DowngradingConsistencyRetryPolicy import on_write_timeout [as 别名]
def test_write_timeout(self):
policy = DowngradingConsistencyRetryPolicy()
# if this is the second or greater attempt, rethrow
retry, consistency = policy.on_write_timeout(
query=None, consistency="ONE", write_type=WriteType.SIMPLE,
required_responses=1, received_responses=2, retry_num=1)
self.assertEqual(retry, RetryPolicy.RETHROW)
# ignore failures on these types of writes
for write_type in (WriteType.SIMPLE, WriteType.BATCH, WriteType.COUNTER):
retry, consistency = policy.on_write_timeout(
query=None, consistency="ONE", write_type=write_type,
required_responses=1, received_responses=2, retry_num=0)
self.assertEqual(retry, RetryPolicy.IGNORE)
# downgrade consistency level on unlogged batch writes
retry, consistency = policy.on_write_timeout(
query=None, consistency="ONE", write_type=WriteType.UNLOGGED_BATCH,
required_responses=3, received_responses=1, retry_num=0)
self.assertEqual(retry, RetryPolicy.RETRY)
self.assertEqual(consistency, ConsistencyLevel.ONE)
# retry batch log writes at the same consistency level
retry, consistency = policy.on_write_timeout(
query=None, consistency="ONE", write_type=WriteType.BATCH_LOG,
required_responses=3, received_responses=1, retry_num=0)
self.assertEqual(retry, RetryPolicy.RETRY)
self.assertEqual(consistency, "ONE")示例2: test_write_timeout
# 需要导入模块: from cassandra.policies import DowngradingConsistencyRetryPolicy [as 别名]
# 或者: from cassandra.policies.DowngradingConsistencyRetryPolicy import on_write_timeout [as 别名]
def test_write_timeout(self):
policy = DowngradingConsistencyRetryPolicy()
# if this is the second or greater attempt, rethrow
retry, consistency = policy.on_write_timeout(
query=None, consistency=ONE, write_type=WriteType.SIMPLE,
required_responses=1, received_responses=2, retry_num=1)
self.assertEqual(retry, RetryPolicy.RETHROW)
self.assertEqual(consistency, None)
for write_type in (WriteType.SIMPLE, WriteType.BATCH, WriteType.COUNTER):
# ignore failures if at least one response (replica persisted)
retry, consistency = policy.on_write_timeout(
query=None, consistency=ONE, write_type=write_type,
required_responses=1, received_responses=2, retry_num=0)
self.assertEqual(retry, RetryPolicy.IGNORE)
# retrhow if we can't be sure we have a replica
retry, consistency = policy.on_write_timeout(
query=None, consistency=ONE, write_type=write_type,
required_responses=1, received_responses=0, retry_num=0)
self.assertEqual(retry, RetryPolicy.RETHROW)
# downgrade consistency level on unlogged batch writes
retry, consistency = policy.on_write_timeout(
query=None, consistency=ONE, write_type=WriteType.UNLOGGED_BATCH,
required_responses=3, received_responses=1, retry_num=0)
self.assertEqual(retry, RetryPolicy.RETRY)
self.assertEqual(consistency, ConsistencyLevel.ONE)
# retry batch log writes at the same consistency level
retry, consistency = policy.on_write_timeout(
query=None, consistency=ONE, write_type=WriteType.BATCH_LOG,
required_responses=3, received_responses=1, retry_num=0)
self.assertEqual(retry, RetryPolicy.RETRY)
self.assertEqual(consistency, ONE)
# timeout on an unknown write_type
retry, consistency = policy.on_write_timeout(
query=None, consistency=ONE, write_type=None,
required_responses=1, received_responses=2, retry_num=0)
self.assertEqual(retry, RetryPolicy.RETHROW)
self.assertEqual(consistency, None)