private static async Task DeleteS3BucketWithObjectsInternalAsync(IAmazonS3 s3Client, string bucketName,
S3DeleteBucketWithObjectsOptions deleteOptions, Action<S3DeleteBucketWithObjectsUpdate> updateCallback,
CancellationToken token)
{
// Validations.
if (s3Client == null)
{
throw new ArgumentNullException("s3Client", "The s3Client cannot be null!");
}
if (string.IsNullOrEmpty(bucketName))
{
throw new ArgumentNullException("bucketName", "The bucketName cannot be null or empty string!");
}
var listVersionsRequest = new ListVersionsRequest
{
BucketName = bucketName
};
ListVersionsResponse listVersionsResponse;
// Iterate through the objects in the bucket and delete them.
do
{
// Check if the operation has been canceled.
if (token.IsCancellationRequested)
{
// Signal that the operation is canceled.
return;
}
// List all the versions of all the objects in the bucket.
listVersionsResponse = await s3Client.ListVersionsAsync(listVersionsRequest,token).ConfigureAwait(false);
if (listVersionsResponse.Versions.Count == 0)
{
// If the bucket has no objects break the loop.
break;
}
var keyVersionList = new List<KeyVersion>(listVersionsResponse.Versions.Count);
for (int index = 0; index < listVersionsResponse.Versions.Count; index++)
{
keyVersionList.Add(new KeyVersion
{
Key = listVersionsResponse.Versions[index].Key,
VersionId = listVersionsResponse.Versions[index].VersionId
});
}
try
{
// Delete the current set of objects.
var deleteObjectsResponse = await s3Client.DeleteObjectsAsync(new DeleteObjectsRequest
{
BucketName = bucketName,
Objects = keyVersionList,
Quiet = deleteOptions.QuietMode
},token).ConfigureAwait(false);
if (!deleteOptions.QuietMode)
{
// If quiet mode is not set, update the client with list of deleted objects.
InvokeS3DeleteBucketWithObjectsUpdateCallback(
updateCallback,
new S3DeleteBucketWithObjectsUpdate
{
DeletedObjects = deleteObjectsResponse.DeletedObjects
}
);
}
}
catch (DeleteObjectsException deleteObjectsException)
{
if (deleteOptions.ContinueOnError)
{
// Continue the delete operation if an error was encountered.
// Update the client with the list of objects that were deleted and the
// list of objects on which the delete failed.
InvokeS3DeleteBucketWithObjectsUpdateCallback(
updateCallback,
new S3DeleteBucketWithObjectsUpdate
{
DeletedObjects = deleteObjectsException.Response.DeletedObjects,
DeleteErrors = deleteObjectsException.Response.DeleteErrors
}
);
}
else
{
// Re-throw the exception if an error was encountered.
throw;
}
}
// Set the markers to get next set of objects from the bucket.
listVersionsRequest.KeyMarker = listVersionsResponse.NextKeyMarker;
listVersionsRequest.VersionIdMarker = listVersionsResponse.NextVersionIdMarker;
}
// Continue listing objects and deleting them until the bucket is empty.
while (listVersionsResponse.IsTruncated);
const int maxRetries = 10;
for (int retries = 1; retries <= maxRetries; retries++)
{
try
{
// Bucket is empty, delete the bucket.
await s3Client.DeleteBucketAsync(new DeleteBucketRequest
{
BucketName = bucketName
},token).ConfigureAwait(false);
break;
}
catch (AmazonS3Exception e)
{
if (e.StatusCode != HttpStatusCode.Conflict || retries == maxRetries)
throw;
else
DefaultRetryPolicy.WaitBeforeRetry(retries, 5000);
}
}
}