本文整理汇总了Python中cassandra.query.SimpleStatement.is_idempotent方法的典型用法代码示例。如果您正苦于以下问题：Python SimpleStatement.is_idempotent方法的具体用法？Python SimpleStatement.is_idempotent怎么用？Python SimpleStatement.is_idempotent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.query.SimpleStatement的用法示例。
在下文中一共展示了SimpleStatement.is_idempotent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_delay_can_be_0
# 需要导入模块: from cassandra.query import SimpleStatement [as 别名]
# 或者: from cassandra.query.SimpleStatement import is_idempotent [as 别名]
def test_delay_can_be_0(self):
"""
Test to validate that the delay can be zero for the ConstantSpeculativeExecutionPolicy
@since 3.13
@jira_ticket PYTHON-836
@expected_result all the queries are executed immediately
@test_category policy
"""
query_to_prime = "INSERT INTO madeup_keyspace.madeup_table(k, v) VALUES (1, 2)"
prime_query(query_to_prime, then={"delay_in_ms": 5000})
number_of_requests = 4
spec = ExecutionProfile(load_balancing_policy=RoundRobinPolicy(),
speculative_execution_policy=ConstantSpeculativeExecutionPolicy(0, number_of_requests))
cluster = Cluster()
cluster.add_execution_profile("spec", spec)
session = cluster.connect(wait_for_all_pools=True)
self.addCleanup(cluster.shutdown)
counter = count()
def patch_and_count(f):
def patched(*args, **kwargs):
next(counter)
print("patched")
f(*args, **kwargs)
return patched
self.addCleanup(setattr, ResponseFuture, "send_request", ResponseFuture.send_request)
ResponseFuture.send_request = patch_and_count(ResponseFuture.send_request)
stmt = SimpleStatement(query_to_prime)
stmt.is_idempotent = True
results = session.execute(stmt, execution_profile="spec")
self.assertEqual(len(results.response_future.attempted_hosts), 3)
# send_request is called number_of_requests times for the speculative request
# plus one for the call from the main thread.
self.assertEqual(next(counter), number_of_requests + 1)