public override Task <bool> ExistsAsync(BlobProviderExistsArgs args)
{
var containerName = GetContainerName(args);
var blobName = AliyunBlobNameCalculator.Calculate(args);
var ossClient = GetOssClient(args.Configuration);
return(Task.FromResult(BlobExists(ossClient, containerName, blobName)));
}
public override Task <bool> DeleteAsync(BlobProviderDeleteArgs args)
{
var containerName = GetContainerName(args);
var blobName = AliyunBlobNameCalculator.Calculate(args);
var ossClient = GetOssClient(args.Configuration);
if (!BlobExists(ossClient, containerName, blobName))
{
return(Task.FromResult(false));
}
ossClient.DeleteObject(containerName, blobName);
return(Task.FromResult(true));
}
public override async Task <Stream> GetOrNullAsync(BlobProviderGetArgs args)
{
var containerName = GetContainerName(args);
var blobName = AliyunBlobNameCalculator.Calculate(args);
var ossClient = GetOssClient(args.Configuration);
if (!BlobExists(ossClient, containerName, blobName))
{
return(null);
}
var result = ossClient.GetObject(containerName, blobName);
return(await TryCopyToMemoryStreamAsync(result.Content, args.CancellationToken));
}
public override Task SaveAsync(BlobProviderSaveArgs args)
{
var containerName = GetContainerName(args);
var blobName = AliyunBlobNameCalculator.Calculate(args);
var aliyunConfig = args.Configuration.GetAliyunConfiguration();
var ossClient = GetOssClient(aliyunConfig);
if (!args.OverrideExisting && BlobExists(ossClient, 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 (aliyunConfig.CreateContainerIfNotExists)
{
if (!ossClient.DoesBucketExist(containerName))
{
ossClient.CreateBucket(containerName);
}
}
ossClient.PutObject(containerName, blobName, args.BlobStream);
return(Task.CompletedTask);
}