public void RetryPolicyFactoryTest()
{
Assert.NotNull(RetryPolicyFactory.NoRetryPolicy);
Assert.NotNull(RetryPolicyFactory.PrimaryKeyViolationRetryPolicy);
RetryPolicy noRetyPolicy = RetryPolicyFactory.CreateDefaultSchemaCommandRetryPolicy(useRetry: false);
var retryState = new RetryStateEx();
retryState.LastError = new Exception();
RetryPolicyFactory.DataConnectionFailureRetry(retryState);
RetryPolicyFactory.CommandFailureRetry(retryState, "command");
RetryPolicyFactory.CommandFailureIgnore(retryState, "command");
RetryPolicyFactory.ElementCommandFailureIgnore(retryState);
RetryPolicyFactory.ElementCommandFailureRetry(retryState);
RetryPolicyFactory.CreateDatabaseCommandFailureIgnore(retryState);
RetryPolicyFactory.CreateDatabaseCommandFailureRetry(retryState);
RetryPolicyFactory.CommandFailureIgnore(retryState);
RetryPolicyFactory.CommandFailureRetry(retryState);
var transientPolicy = new RetryPolicyFactory.TransientErrorIgnoreStrategy();
Assert.False(transientPolicy.CanRetry(new Exception()));
Assert.False(transientPolicy.ShouldIgnoreError(new Exception()));
}
protected override bool ShouldRetryImpl(RetryState retryStateObj)
{
Contract.Assert(retryStateObj is RetryStateEx);
RetryStateEx retryState = (RetryStateEx)retryStateObj;
// Calculate the delay as exponential value based on the number of retries.
retryState.Delay =
RetryPolicyUtils.CalcExponentialRetryDelay(
retryState.RetryCount,
_intervalFactor,
_minInterval,
_maxInterval);
// Add the delay to the total retry time
retryState.TotalRetryTime = retryState.TotalRetryTime + retryState.Delay;
// Calculate the maximum total retry time depending on how long ago was the task (this retry policy) started.
// Longer running tasks are less eager to abort since, more work is has been done.
TimeSpan totalRetryTimeLimit = checked (TimeSpan.FromMilliseconds(
Math.Max(
Math.Min(
_stopwatch.ElapsedMilliseconds * _totalRetryTimeLimitRate,
_maxTotalRetryTimeLimit.TotalMilliseconds),
_minTotalRetryTimeLimit.TotalMilliseconds)));
if (retryState.TotalRetryTime <= totalRetryTimeLimit)
{
return(true);
}
retryState.Delay = TimeSpan.Zero;
return(false);
}
public void FixedDelayPolicyTest()
{
TestFixedDelayPolicy policy = new TestFixedDelayPolicy(
strategy: new NetworkConnectivityErrorDetectionStrategy(),
maxRetryCount: 3,
intervalBetweenRetries: TimeSpan.FromMilliseconds(100));
var retryState = new RetryStateEx();
bool shouldRety = policy.InvokeShouldRetryImpl(retryState);
policy.DoOnIgnoreErrorOccurred(retryState);
Assert.True(shouldRety);
}
