本文整理汇总了Python中cassandra.policies.DowngradingConsistencyRetryPolicy.on_unavailable方法的典型用法代码示例。如果您正苦于以下问题：Python DowngradingConsistencyRetryPolicy.on_unavailable方法的具体用法？Python DowngradingConsistencyRetryPolicy.on_unavailable怎么用？Python DowngradingConsistencyRetryPolicy.on_unavailable使用的例子？那么恭喜您, 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_unavailable方法的1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_unavailable
# 需要导入模块: from cassandra.policies import DowngradingConsistencyRetryPolicy [as 别名]
# 或者: from cassandra.policies.DowngradingConsistencyRetryPolicy import on_unavailable [as 别名]
def test_unavailable(self):
policy = DowngradingConsistencyRetryPolicy()
# if this is the second or greater attempt, rethrow
retry, consistency = policy.on_unavailable(
query=None, consistency="ONE", required_replicas=3, alive_replicas=1, retry_num=1)
self.assertEqual(retry, RetryPolicy.RETHROW)
# downgrade consistency on unavailable exceptions
retry, consistency = policy.on_unavailable(
query=None, consistency="ONE", required_replicas=3, alive_replicas=1, retry_num=0)
self.assertEqual(retry, RetryPolicy.RETRY)
self.assertEqual(consistency, ConsistencyLevel.ONE)