public override async Task <Stream> GetOrNullAsync(BlobProviderGetArgs args)
{
var blobName = MinioBlobNameCalculator.Calculate(args);
var client = GetMinioClient(args);
var containerName = GetContainerName(args);
if (!await BlobExistsAsync(client, containerName, blobName))
{
return(null);
}
var memoryStream = new MemoryStream();
await client.GetObjectAsync(containerName, blobName, (stream) =>
{
if (stream != null)
{
stream.CopyTo(memoryStream);
memoryStream.Seek(0, SeekOrigin.Begin);
}
else
{
memoryStream = null;
}
});
return(memoryStream);
}
public override async Task <bool> ExistsAsync(BlobProviderExistsArgs args)
{
var blobName = MinioBlobNameCalculator.Calculate(args);
var client = GetMinioClient(args);
var containerName = GetContainerName(args);
return(await BlobExistsAsync(client, containerName, blobName));
}
public override async Task <bool> DeleteAsync(BlobProviderDeleteArgs args)
{
var blobName = MinioBlobNameCalculator.Calculate(args);
var client = GetMinioClient(args);
var containerName = GetContainerName(args);
if (await BlobExistsAsync(client, containerName, blobName))
{
await client.RemoveObjectAsync(containerName, blobName);
return(true);
}
return(false);
}
public override async Task SaveAsync(BlobProviderSaveArgs args)
{
var blobName = MinioBlobNameCalculator.Calculate(args);
var configuration = args.Configuration.GetMinioConfiguration();
var client = GetMinioClient(args);
var containerName = GetContainerName(args);
if (!args.OverrideExisting && await BlobExistsAsync(client, 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.CreateBucketIfNotExists)
{
await CreateBucketIfNotExists(client, containerName);
}
await client.PutObjectAsync(containerName, blobName, args.BlobStream, args.BlobStream.Length);
}
public override async Task <Stream> GetOrNullAsync(BlobProviderGetArgs args)
{
var blobName = MinioBlobNameCalculator.Calculate(args);
var client = GetMinioClient(args);
var containerName = GetContainerName(args);
if (!await BlobExistsAsync(client, containerName, blobName))
{
return(null);
}
Stream blobStream = null;
await client.GetObjectAsync(containerName, blobName, (stream) =>
{
blobStream = stream;
});
return(await TryCopyToMemoryStreamAsync(blobStream, args.CancellationToken));
}
