public CloudStorageSeekableStream(ICloudStorage storage, ICloudStorageResourceName resourceName)
{
_CloudStorage = storage;
_ResourceName = resourceName;
Length = Task.Run(() => { return(_CloudStorage.GetObjectLengthAsync(_ResourceName)); }).Result;
}
internal CloudZipArchiveEntry(ICloudStorage storage, ICloudStorageResourceName resourceName, ZipArchiveEntry entry)
: base(entry)
{
_CloudStorage = storage;
_ResourceName = resourceName;
CompressionMethod = (ushort)methodProperty.GetValue(entry);
OffsetOfCompressedData = (long)offsetProperty.GetValue(entry);
}
public CloudZipArchive(ICloudStorage storage, ICloudStorageResourceName resourceName)
{
_CloudStorage = storage;
_ResourceName = resourceName;
_stream = new CloudStorageSeekableStream(_CloudStorage, _ResourceName);
_Archive = new ZipArchive(_stream);
}
public async Task <long> GetObjectLengthAsync(ICloudStorageResourceName resource)
{
if (resource is S3CloudStorageResourceName s3resource)
{
var metadata = await S3Client.GetObjectMetadataAsync(s3resource.Name, s3resource.ObjectKey);
return(metadata.ContentLength);
}
return(-1);
}
/// <summary>
/// Get Object
/// </summary>
/// <param name="resource"></param>
/// <param name="range">(optional)</param>
/// <returns></returns>
public async Task <Stream> GetObjectStreamAsync(
ICloudStorageResourceName resource, CloudStorageResourceRange range = null)
{
Stream stream = null;
if (resource is S3CloudStorageResourceName s3resource)
{
var req = new GetObjectRequest {
BucketName = s3resource.Name, Key = s3resource.ObjectKey
};
if (range != null)
{
req.ByteRange = new ByteRange(range.Offset, range.Offset + range.Length - 1);
}
var objectResponse = await S3Client.GetObjectAsync(req);
stream = objectResponse.ResponseStream;
}
return(stream);
}
