public override async Task SaveAsync(BlobProviderSaveArgs args)
{
var blobName = AwsBlobNameCalculator.Calculate(args);
var configuration = args.Configuration.GetAwsConfiguration();
var containerName = GetContainerName(args);
using (var amazonS3Client = await GetAmazonS3Client(args))
{
if (!args.OverrideExisting && await BlobExistsAsync(amazonS3Client, containerName, blobName))
{
throw new BlobAlreadyExistsException(
$"Saving BLOB '{args.BlobName}' does already exists in the container '{containerName}'! Set {nameof(args.OverrideExisting)} if it should be overwritten.");
}
if (configuration.CreateContainerIfNotExists)
{
await CreateContainerIfNotExists(amazonS3Client, containerName);
}
await amazonS3Client.PutObjectAsync(new PutObjectRequest
{
BucketName = containerName,
Key = blobName,
InputStream = args.BlobStream
});
}
}
public override async Task <bool> ExistsAsync(BlobProviderExistsArgs args)
{
var blobName = AwsBlobNameCalculator.Calculate(args);
var containerName = GetContainerName(args);
using (var amazonS3Client = await GetAmazonS3Client(args))
{
return(await BlobExistsAsync(amazonS3Client, containerName, blobName));
}
}
public override async Task <bool> DeleteAsync(BlobProviderDeleteArgs args)
{
var blobName = AwsBlobNameCalculator.Calculate(args);
var containerName = GetContainerName(args);
using (var amazonS3Client = await GetAmazonS3Client(args))
{
if (!await BlobExistsAsync(amazonS3Client, containerName, blobName))
{
return(false);
}
await amazonS3Client.DeleteObjectAsync(new DeleteObjectRequest
{
BucketName = containerName,
Key = blobName
});
return(true);
}
}
public override async Task <Stream> GetOrNullAsync(BlobProviderGetArgs args)
{
var blobName = AwsBlobNameCalculator.Calculate(args);
var containerName = GetContainerName(args);
using (var amazonS3Client = await GetAmazonS3Client(args))
{
if (!await BlobExistsAsync(amazonS3Client, containerName, blobName))
{
return(null);
}
var response = await amazonS3Client.GetObjectAsync(new GetObjectRequest
{
BucketName = containerName,
Key = blobName
});
return(await TryCopyToMemoryStreamAsync(response.ResponseStream, args.CancellationToken));
}
}
public async override Task <Stream> GetOrNullAsync(BlobProviderGetArgs args)
{
var blobName = AwsBlobNameCalculator.Calculate(args);
var containerName = GetContainerName(args);
using (var amazonS3Client = await GetAmazonS3Client(args))
{
if (!await BlobExistsAsync(amazonS3Client, containerName, blobName))
{
return(null);
}
var response = await amazonS3Client.GetObjectAsync(new GetObjectRequest
{
BucketName = containerName,
Key = blobName
});
var memoryStream = new MemoryStream();
await response.ResponseStream.CopyToAsync(memoryStream);
return(memoryStream);
}
}