public ICreateLinkRequest BuildCreateLinkRequest(string collection, string relativePath, FileFingerprint fileFingerprint, string existingETag)
{
var link = '/' + _pathManager.GetBlobPath(fileFingerprint);
byte[] md5Digest;
using (var md5 = MD5.Create())
{
md5Digest = md5.ComputeHash(Encoding.UTF8.GetBytes(link));
}
var etag = S3Util.ComputeS3Etag(md5Digest);
if (!string.IsNullOrEmpty(existingETag))
{
var match = string.Equals(etag, existingETag, StringComparison.CurrentCultureIgnoreCase);
if (match)
{
//Debug.WriteLine($"{collection} \"{relativePath}\" already exists and equals {link}");
return(null);
}
}
var md5DigestString = Convert.ToBase64String(md5Digest);
var treeKey = _pathManager.GetTreeNamePath(collection, relativePath);
var request = new PutObjectRequest
{
BucketName = _pathManager.Bucket,
ContentBody = link,
Key = treeKey,
MD5Digest = md5DigestString,
WebsiteRedirectLocation = link,
ContentType = MimeDetector.Default.GetMimeType(fileFingerprint.FullFilePath),
StorageClass = _s3StorageClass,
Headers =
{
["x-amz-meta-lastModified"] = fileFingerprint.LastModifiedUtc.ToString("O")
}
};
return(new CreateLinkRequest
{
Collection = collection,
RelativePath = relativePath,
BlobLink = link,
FileFingerprint = fileFingerprint,
Request = request,
ETag = etag
});
}
public IUploadBlobRequest BuildUploadBlobRequest(Tuple <FileFingerprint, AnnotatedPath> tuple)
{
Debug.WriteLine($"S3Blobs.BuildUploadRequest() {tuple.Item1.FullFilePath} ({tuple.Item1.Fingerprint.Key().Substring(0, 12)})");
var blobKey = _pathManager.GetBlobPath(tuple.Item1);
var fullFilePath = tuple.Item2.FileInfo.FullName;
var fileInfo = new FileInfo(fullFilePath);
var fingerprint = tuple.Item1.Fingerprint;
if (fileInfo.Length != fingerprint.Size || fileInfo.LastWriteTimeUtc != tuple.Item1.LastModifiedUtc)
{
Debug.WriteLine($"BuildUploadRequest(): {fileInfo.FullName} changed {fingerprint.Size} != {fileInfo.Length} || {tuple.Item1.LastModifiedUtc} != {fileInfo.LastWriteTimeUtc} ({tuple.Item1.LastModifiedUtc - fileInfo.LastWriteTimeUtc})");
return(null);
}
var md5Digest = Convert.ToBase64String(fingerprint.Md5);
var request = new PutObjectRequest
{
BucketName = _pathManager.Bucket,
Key = blobKey,
MD5Digest = md5Digest,
Headers =
{
ContentType = MimeDetector.Default.GetMimeType(fullFilePath),
ContentLength = fingerprint.Size,
ContentMD5 = md5Digest
},
StorageClass = _s3StorageClass,
AutoCloseStream = false,
AutoResetStreamPosition = false
};
request.Headers["x-amz-meta-lastModified"] = tuple.Item1.LastModifiedUtc.ToString("O");
request.Headers["x-amz-meta-SHA2-256"] = Convert.ToBase64String(fingerprint.Sha2_256);
request.Headers["x-amz-meta-SHA3-512"] = Convert.ToBase64String(fingerprint.Sha3_512);
if (!string.IsNullOrEmpty(tuple.Item2.Collection))
{
request.Headers["x-amz-meta-original-collection"] = tuple.Item2.Collection;
}
if (!string.IsNullOrEmpty(tuple.Item2.RelativePath))
{
request.Headers["x-amz-meta-original-path"] = tuple.Item2.RelativePath;
}
var fileName = Path.GetFileName(fullFilePath);
if (!string.IsNullOrWhiteSpace(fileName))
{
fileName = PathUtil.NormalizeAsciiName(fileName);
request.Headers["x-amz-meta-original-name"] = fileName;
request.Headers.ContentDisposition = "attachment; filename=" + fileName;
}
return(new UploadBlobRequest
{
Request = request,
FileFingerprint = tuple.Item1,
ETag = S3Util.ComputeS3Etag(fingerprint.Md5),
Key = blobKey
});
}
