public RetryPolicy(
int maximumRetryCount,
TransientFaultDetectionStrategy <TResult> transientFaultDetectionStrategy,
RetryIntervalStrategy retryIntervalStrategy)
: base(maximumRetryCount, transientFaultDetectionStrategy, retryIntervalStrategy)
{
TransientFaultDetectionStrategy = transientFaultDetectionStrategy;
}
public void IsTransientResult_returns_false()
{
var fixture = new Fixture();
var result = fixture.Create <Result>();
var sut = new TransientFaultDetectionStrategy <Result>();
bool actual = sut.IsTransientResult(result);
actual.Should().BeFalse();
}
public void IsTransientException_returns_true()
{
var sut = new TransientFaultDetectionStrategy();
var fixture = new Fixture();
var exception = fixture.Create <Exception>();
bool actual = sut.IsTransientException(exception);
actual.Should().BeTrue();
}
public RetryPolicy(
int maximumRetryCount,
TransientFaultDetectionStrategy transientFaultDetectionStrategy,
RetryIntervalStrategy retryIntervalStrategy)
{
if (maximumRetryCount < 0)
{
throw new ArgumentOutOfRangeException(nameof(maximumRetryCount), "Value cannot be negative.");
}
MaximumRetryCount = maximumRetryCount;
TransientFaultDetectionStrategy = transientFaultDetectionStrategy ?? throw new ArgumentNullException(nameof(transientFaultDetectionStrategy));
RetryIntervalStrategy = retryIntervalStrategy ?? throw new ArgumentNullException(nameof(retryIntervalStrategy));
}
private async Task PerformRun(
Func <CancellationToken, Task> operation,
CancellationToken cancellationToken)
{
int retryCount = 0;
Try:
try
{
await operation.Invoke(cancellationToken).ConfigureAwait(false);
}
catch (Exception exception)
when(TransientFaultDetectionStrategy.IsTransientException(exception) && retryCount < MaximumRetryCount)
{
await Task.Delay(RetryIntervalStrategy.GetInterval(retryCount));
retryCount++;
goto Try;
}
}