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From "Michelle Zhang (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (JCLOUDS-1268) Calculate and include SHA-1 hash at the end of a B2 upload
Date Sun, 23 Apr 2017 00:12:04 GMT

    [ https://issues.apache.org/jira/browse/JCLOUDS-1268?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15980171#comment-15980171
] 

Michelle Zhang commented on JCLOUDS-1268:
-----------------------------------------

Hi Andrew, for this issue do you mean we need to calc the sha1 hashsum when user doesn't provide
it? https://github.com/jclouds/jclouds-labs/blob/master/b2/src/main/java/org/jclouds/b2/binders/UploadFileBinder.java#L38
Then I modify the payload and add the hash sum to the end?

> Calculate and include SHA-1 hash at the end of a B2 upload 
> -----------------------------------------------------------
>
>                 Key: JCLOUDS-1268
>                 URL: https://issues.apache.org/jira/browse/JCLOUDS-1268
>             Project: jclouds
>          Issue Type: Improvement
>          Components: jclouds-blobstore
>    Affects Versions: 2.0.1
>            Reporter: Andrew Gaul
>            Priority: Minor
>              Labels: b2
>
> B2 removed the need to calculate the SHA-1 hash before uploading a file, allowing streaming.
 Currently jclouds uploads files without a hash, although B2 also supports calculating the
hash while uploading then including the SHA-1 at the end via {{X-Bz-Content-Sha1: hex_digits_at_end}}:
 
> https://www.backblaze.com/b2/docs/uploading.html
> Supporting this requires some changes to jclouds to allow modifying the Payload to emit
the hash at the end of the transfer.



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