public static void WaitForBucket(IAmazonS3 client, string bucketName, int maxSeconds)
{
var sleeper = UtilityMethods.ListSleeper.Create();
UtilityMethods.WaitUntilSuccess(() => {
//Check if a bucket exists by trying to put an object in it
var key = Guid.NewGuid().ToString() + "_existskey";
var res = client.PutObject(new PutObjectRequest
{
BucketName = bucketName,
Key = key,
ContentBody = "exists..."
});
try
{
client.Delete(bucketName, key, null);
}
catch
{
Console.WriteLine($"Eventual consistency error: failed to delete key {key} from bucket {bucketName}");
}
return(true);
});
//Double check the bucket still exists using the DoesBucketExistV2 method
var exists = S3TestUtils.WaitForConsistency(() =>
{
return(AmazonS3Util.DoesS3BucketExistV2(client, bucketName) ? (bool?)true : null);
});
}
public static T WaitForConsistency <T>(Func <T> loadFunction)
{
//First try waiting up to 60 seconds.
var firstWaitSeconds = 60;
try
{
return(UtilityMethods.WaitUntilSuccess(loadFunction, 10, firstWaitSeconds));
}
catch
{
Console.WriteLine($"Eventual consistency wait: could not resolve eventual consistency after {firstWaitSeconds} seconds. Attempting to resolve...");
}
//Spin through request to try to get the expected result. As soon as we get a non null result use it.
for (var spinCounter = 0; spinCounter < MAX_SPIN_LOOPS; spinCounter++)
{
try
{
T result = loadFunction();
if (result != null)
{
if (spinCounter != 0)
{
//Only log that a wait happened if it didn't do it on the first time.
Console.WriteLine($"Eventual consistency wait successful on attempt {spinCounter + 1}.");
}
return(result);
}
}
catch
{
}
Thread.Sleep(0);
}
//If we don't have an ok result then spend the normal wait period to wait for eventual consistency.
Console.WriteLine($"Eventual consistency wait: could not resolve eventual consistency after {MAX_SPIN_LOOPS}. Waiting normally...");
var lastWaitSeconds = 240; //4 minute wait.
return(UtilityMethods.WaitUntilSuccess(loadFunction, 5, lastWaitSeconds));
}
