public static async Task RetryAsync(IDbRetryPolicy policy, Func <Task> action, CancellationToken cancellationToken = default)
{
if (policy == null)
{
throw new ArgumentNullException(nameof(policy));
}
if (action == null)
{
throw new ArgumentNullException(nameof(action));
}
IEnumerator <TimeSpan> intervals = null;
while (true)
{
try
{
await action();
return;
}
catch (Exception ex) when(policy.ShouldRetry(ex))
{
if (intervals == null)
{
intervals = policy.Strategy.GetIntervals().GetEnumerator();
}
if (!intervals.MoveNext())
{
throw;
}
await Task.Delay(intervals.Current, cancellationToken);
}
}
}
public static T Retry <T>(IDbRetryPolicy policy, Func <T> action)
{
if (policy == null)
{
throw new ArgumentNullException(nameof(policy));
}
if (action == null)
{
throw new ArgumentNullException(nameof(action));
}
IEnumerator <TimeSpan> intervals = null;
while (true)
{
try
{
return(action());
}
catch (Exception ex) when(policy.ShouldRetry(ex))
{
if (intervals == null)
{
intervals = policy.Strategy.GetIntervals().GetEnumerator();
}
if (!intervals.MoveNext())
{
throw;
}
Thread.Sleep(intervals.Current);
}
}
}