/// <summary>
/// Lists all objects in a bucket
/// </summary>
/// <param name="client">The S3 client to use</param>
/// <param name="bucketName">The bucket name</param>
/// <param name="prefix">An optional prefix to filter with</param>
/// <returns></returns>
public static async Task <IEnumerable <ListObjectsV2Response> > ListAllObjectsAsync(this IAmazonS3 client, string bucketName, string prefix = "")
{
ParameterTests.NotNullOrEmpty(bucketName, "bucketName");
ParameterTests.NonNull <IAmazonS3>(client, "client");
ListObjectsV2Request request = new ListObjectsV2Request()
{
BucketName = bucketName,
Prefix = prefix ?? String.Empty
};
return(await ListAllObjectsAsync(client, request));
}
/// <summary>
/// Tests if an S3 bucket exists by creating a pre-signed url and performing a
/// HEAD operation on the url. This only tests for buckets that you have access to.
/// </summary>
/// <param name="client"></param>
/// <param name="bucketName">The bucket to test for existence</param>
/// <returns></returns>
public static async Task <bool> BucketExistsAsync(this IAmazonS3 client, string bucketName)
{
ParameterTests.NotNullOrEmpty(bucketName, "bucketName");
GetPreSignedUrlRequest request = new GetPreSignedUrlRequest()
{
BucketName = bucketName,
Expires = DateTime.Now.AddMinutes(5),
Verb = HttpVerb.HEAD
};
string response = client.GetPreSignedURL(request);
HttpClient http = new HttpClient();
HttpRequestMessage message = new HttpRequestMessage(HttpMethod.Head, response);
HttpResponseMessage result = await http.SendAsync(message);
return(result.IsSuccessStatusCode);
}
/// <summary>
/// Empties all contents of the specified bucket.
/// </summary>
/// <param name="client"></param>
/// <param name="bucketName">The name of the bucket to empty</param>
/// <param name="includeAllVersions">If true, in a bucket with versioning turned on, this will delete all versions of
/// the objects in the bukcet, not just add a delete marker as the most recent version.</param>
/// <returns></returns>
public static async Task <IEnumerable <DeleteError> > EmptyBucketAsync(this IAmazonS3 client, string bucketName, bool includeAllVersions = false)
{
ParameterTests.NotNullOrEmpty(bucketName, "bucketName");
DeleteObjectsRequest delete = new DeleteObjectsRequest()
{
BucketName = bucketName
};
List <DeleteError> errors = new List <DeleteError>();
if (includeAllVersions)
{
ListVersionsResponse response;
ListVersionsRequest request = new ListVersionsRequest()
{
BucketName = bucketName
};
do
{
response = await client.ListVersionsAsync(request);
request.KeyMarker = response.NextKeyMarker;
request.VersionIdMarker = response.VersionIdMarker;
delete.Objects = response.Versions.Select(x => new KeyVersion()
{
Key = x.Key, VersionId = x.VersionId
}).ToList();
DeleteObjectsResponse deleteResponse = await client.DeleteObjectsAsync(delete);
errors.AddRange(deleteResponse.DeleteErrors);
} while (response.IsTruncated);
}
else
{
ListObjectsV2Response response;
ListObjectsV2Request request = new ListObjectsV2Request()
{
BucketName = bucketName
};
do
{
response = await client.ListObjectsV2Async(request);
request.ContinuationToken = response.NextContinuationToken;
delete.Objects = response.S3Objects.Select(x => new KeyVersion()
{
Key = x.Key
}).ToList();
DeleteObjectsResponse deleteResponse = await client.DeleteObjectsAsync(delete);
errors.AddRange(deleteResponse.DeleteErrors);
} while (response.IsTruncated);
}
return(errors);
}