public void DeleteFromS3(S3File file, AWS_Credentials credentials)
{
if (file is null || file.RemoteFilePath is null || file.Bucket is null)
{
throw new Exception("S3 File is NULL or has some NULL attributes");
}
if (credentials is null || credentials.AWS_AccessKey is null || credentials.AWS_SecretKey is null || credentials.Region is null)
{
throw new CredentialsNotProvidedException();
}
try
{
using (AmazonS3Client client = getS3Client(credentials))
{
DeleteObjectRequest request = new
DeleteObjectRequest();
request.BucketName = file.Bucket;
request.Key = file.RemoteFilePath;
Task <DeleteObjectResponse> task = client.DeleteObjectAsync(request);
task.Wait();
}
}
catch (Exception ex)
{
throw ex;
}
}
public void DeleteBucket(string bucket_name, AWS_Credentials credentials)
{
if (credentials is null || credentials.AWS_AccessKey is null || credentials.AWS_SecretKey is null || credentials.Region is null)
{
throw new CredentialsNotProvidedException();
}
if (bucket_name is null)
{
throw new ArgumentNullException();
}
using (AmazonS3Client client = getS3Client(credentials))
{
List <string> existing_buckets = GetAllBuckets(credentials);
try
{
if (!(existing_buckets.Where(b => b.ToString() == bucket_name).FirstOrDefault() is null))
{
var request = new DeleteBucketRequest
{
BucketName = bucket_name,
UseClientRegion = true
};
Task <DeleteBucketResponse> task = client.DeleteBucketAsync(request);
task.Wait();
}
}
catch (Exception e)
{
throw e;
}
}
}
public List <string> GetAllBuckets(AWS_Credentials credentials)
{
if (credentials is null || credentials.AWS_AccessKey is null || credentials.AWS_SecretKey is null || credentials.Region is null)
{
throw new CredentialsNotProvidedException();
}
List <string> buckets = new List <string>();
using (AmazonS3Client client = getS3Client(credentials))
{
ListBucketsRequest bucketFetchUtility = new
ListBucketsRequest();
Task <ListBucketsResponse> bucketsResponse = client.ListBucketsAsync(bucketFetchUtility);
bucketsResponse.Wait();
if (bucketsResponse.IsCompleted)
{
foreach (S3Bucket bucket in bucketsResponse.Result.Buckets)
{
buckets.Add(bucket.BucketName);
}
}
}
return(buckets);
}
public void DownloadFromS3(S3File file, AWS_Credentials credentials)
{
if (file is null || file.RemoteFilePath is null || file.Bucket is null || file.LocalFilePath is null)
{
throw new Exception("S3 File is NULL or has some NULL attributes");
}
if (credentials is null || credentials.AWS_AccessKey is null || credentials.AWS_SecretKey is null || credentials.Region is null)
{
throw new CredentialsNotProvidedException();
}
try
{
TransferUtility fileTransferUtility = new
TransferUtility(getS3Client(credentials));
TransferUtilityDownloadRequest fileTransferUtilityRequest = new TransferUtilityDownloadRequest
{
BucketName = file.Bucket,
FilePath = file.LocalFilePath,
Key = file.RemoteFilePath,
};
fileTransferUtility.Download(fileTransferUtilityRequest);
}
catch (Exception ex)
{
throw ex;
}
}
public List <string> GetBucketKeys(string bucket_name, AWS_Credentials credentials, string prefix = null, long max_count = 100_000)
{
if (credentials is null || credentials.AWS_AccessKey is null || credentials.AWS_SecretKey is null || credentials.Region is null)
{
throw new CredentialsNotProvidedException();
}
if (bucket_name is null)
{
throw new ArgumentNullException();
}
List <string> keys = new List <string>();
try
{
using (var client = new AmazonS3Client(credentials.AWS_AccessKey, credentials.AWS_SecretKey, credentials.Region))
{
ListObjectsV2Request request = new ListObjectsV2Request();
request.BucketName = bucket_name;
request.Prefix = prefix;
if (max_count > 0 && max_count < 1000)
{
request.MaxKeys = (int)max_count;
}
Task <ListObjectsV2Response> task;
ListObjectsV2Response response;
long iterator = 0;
do
{
task = client.ListObjectsV2Async(request);
task.Wait();
response = task.Result;
keys.AddRange(response.S3Objects.Select(x => x.Key));
iterator += response.S3Objects.Count;
request.ContinuationToken = response.NextContinuationToken;
} while (response.IsTruncated == true && ((max_count == -1) ? true : iterator < max_count));
}
}
catch (Exception ex)
{
throw ex;
}
return(keys);
}
public AmazonS3Client getS3Client(AWS_Credentials credentials)
{
if (credentials is null || credentials.AWS_AccessKey is null || credentials.AWS_SecretKey is null || credentials.Region is null)
{
throw new CredentialsNotProvidedException();
}
try
{
return(new AmazonS3Client(credentials.AWS_AccessKey, credentials.AWS_SecretKey, credentials.Region));
}
catch (Exception ex)
{
throw ex.InnerException;
}
}
public S3(AWS_Credentials credentials)
{
Credentials = credentials ?? throw new ArgumentNullException(nameof(credentials));
}
public S3()
{
this.Credentials = new AWS_Credentials();
}
