/// <summary>
/// Given a service request, retries the request up to 10 times using an exponential
/// backoff strategy. Also takes an enumeration of status codes for which requests should be
/// retried (that is, HTTP errors that are expected to occur transiently).
/// </summary>
internal TResponse ExecuteWithRetries <TResponse>(
IClientServiceRequest <TResponse> request, IEnumerable <HttpStatusCode> statusCodes)
{
var backOff = new Google.Apis.Util.ExponentialBackOff();
int numRetries = 0;
while (true)
{
try
{
return(request.Execute());
}
catch (Google.GoogleApiException e)
{
if (!statusCodes.Contains(e.HttpStatusCode))
{
throw e;
}
numRetries++;
var nextSpan = backOff.GetNextBackOff(numRetries);
if (nextSpan == TimeSpan.MinValue)
{
throw e;
}
Console.WriteLine("Attempt {0} failed, retrying in {1}.", numRetries, nextSpan);
System.Threading.Thread.Sleep(nextSpan);
}
}
}