/// <summary>
/// Throws a DataCorruptionException if the content hash is available but doesn't match.
/// </summary>
/// <param name="blob">Cloud Blob</param>
/// <param name="fileName">File name</param>
public void VerifyContentMd5Hash(ICloudBlob blob, string fileName)
{
if (blob == null)
{
throw new ArgumentNullException(nameof(blob));
}
if (string.IsNullOrWhiteSpace(fileName))
{
throw new ArgumentNullException(nameof(fileName));
}
var expectedHash = GetBlobHash(blob);
if (string.IsNullOrWhiteSpace(expectedHash))
{
throw new DataCorruptionException($"Blob MD5 content hash is null or empty {blob?.Name}. Data is corrupted!");
}
var computedHash = _cryptographyHelper.ComputeFileMd5Hash(fileName);
if (expectedHash != computedHash)
{
throw new DataCorruptionException($"Blob MD5 content hash mismatch {fileName}. Data is corrupted! Expected hash: {expectedHash}, computed: {computedHash}");
}
}
