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https://issues.apache.org/jira/browse/JCLOUDS-1547?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Andrew Gaul reassigned JCLOUDS-1547:
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Assignee: Andrew Gaul
> Google InputStream blob upload ignores MD5
> ------------------------------------------
>
> Key: JCLOUDS-1547
> URL: https://issues.apache.org/jira/browse/JCLOUDS-1547
> Project: jclouds
> Issue Type: Bug
> Components: jclouds-blobstore
> Affects Versions: 2.2.0, 2.2.1
> Reporter: Alexander Chernavin
> Assignee: Andrew Gaul
> Priority: Major
> Labels: google-cloud-storage, md5
>
> According to [GCS blob upload
> documentation|[https://cloud.google.com/storage/docs/xml-api/put-object-upload]],
> when Content-MD5 header is provided, Google uses it to verify data integrity
> of an uploaded blob. This feature is crucial for us. We have a file upload
> functionality that takes an input stream and uploads it to a cloud via
> JClouds. We want to be sure that file integrity is enforced.
>
> JClouds blob builder allows to specify content MD5, but this value is ignored
> with InputStream payload, it's simply is not propagated into Content-MD5
> header.
> Here is the code snippet to reproduce the issue:
> {code:java}
> BlobStoreContext context = ContextBuilder.newBuilder("google-cloud-storage")
> .credentials(clientEmail, privateKey)
> .buildView(BlobStoreContext.class);
> // generate MD5 hash for some bogus content
> MessageDigest md5 = MessageDigest.getInstance("MD5");
> md5.update("bogus".getBytes());
> InputStream inputStream = new ByteArrayInputStream("hi".getBytes());
> BlobStore blobStore = context.getBlobStore();
> blobStore.putBlob(myContainer,
> blobStore.blobBuilder("test.txt")
> .payload(inputStream)
> .contentLength(2)
> .contentType("text/plain")
> .contentMD5(HashCode.fromBytes(md5.digest()))
> .build()); {code}
> putBlob should have failed, because payload is "hi", but MD5 is calculated
> for "bogus" string.
>
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