public void GetPolicyTPolicy_should_return_null_if_no_TPolicy()
{
Policy policyA = Policy.NoOp();
Policy policyB = Policy.Handle <Exception>().Retry();
Policy policyC = Policy.NoOp();
PolicyWrap wrap = policyA.Wrap(policyB.Wrap(policyC));
wrap.GetPolicy <CircuitBreakerPolicy>().Should().BeNull();
}
public void GetPolicyTPolicy_should_return_single_policy_of_type_TPolicy()
{
Policy policyA = Policy.NoOp();
Policy policyB = Policy.Handle <Exception>().Retry();
Policy policyC = Policy.NoOp();
PolicyWrap wrap = policyA.Wrap(policyB.Wrap(policyC));
wrap.GetPolicy <RetryPolicy>().Should().BeSameAs(policyB);
}
public void GetPolicyTPolicy_with_predicate_should_throw_if_predicate_is_null()
{
Policy policyA = Policy.NoOp();
Policy policyB = Policy.NoOp();
PolicyWrap wrap = policyA.Wrap(policyB);
Action configure = () => wrap.GetPolicy <NoOpPolicy>(null);
configure.ShouldThrow <ArgumentNullException>().And.ParamName.Should().Be("filter");
}
public void GetPolicyTPolicy_should_return_null_if_none_match_predicate()
{
CircuitBreakerPolicy policyA = Policy.Handle <Exception>().CircuitBreaker(1, TimeSpan.Zero);
Policy policyB = Policy.Handle <Exception>().Retry();
CircuitBreakerPolicy policyC = Policy.Handle <Exception>().CircuitBreaker(1, TimeSpan.Zero);
PolicyWrap wrap = policyA.Wrap(policyB.Wrap(policyC));
wrap.GetPolicy <CircuitBreakerPolicy>(p => p.CircuitState == CircuitState.Open).Should().BeNull();
}
/// <summary>
/// 重试并熔断
/// </summary>
/// <typeparam name="T"></typeparam>
/// <param name="fun"></param>
/// <returns></returns>
public async Task <T> ExecRetryBreakerAsync <T>(Func <Task <T> > fun)
{
var cb = _policyRetryBreakerAsync.GetPolicy <CircuitBreakerPolicy>();
if (cb.CircuitState.HasFlag(CircuitState.Open))
{
throw new Exception("处于熔断状态");
}
return(await _policyRetryBreaker.ExecuteAsync(fun));
}
/// <summary>
/// 重试并熔断
/// </summary>
/// <typeparam name="T"></typeparam>
/// <param name="fun"></param>
/// <returns></returns>
public T ExecRetryBreaker <T>(Func <T> fun)
{
var cb = _policyRetryBreaker.GetPolicy <CircuitBreakerPolicy>();
if (cb.CircuitState.HasFlag(CircuitState.Open))
{
throw new Exception("处于熔断状态");
}
return(_policyRetryBreaker.Execute(fun));
}
public void GetPolicyTPolicy_should_return_single_policy_of_type_TPolicy_matching_predicate()
{
CircuitBreakerPolicy policyA = Policy.Handle <Exception>().CircuitBreaker(1, TimeSpan.Zero);
Policy policyB = Policy.Handle <Exception>().Retry();
CircuitBreakerPolicy policyC = Policy.Handle <Exception>().CircuitBreaker(1, TimeSpan.Zero);
policyA.Isolate();
PolicyWrap wrap = policyA.Wrap(policyB.Wrap(policyC));
wrap.GetPolicy <CircuitBreakerPolicy>(p => p.CircuitState == CircuitState.Closed).Should().BeSameAs(policyC);
}