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https://issues.apache.org/jira/browse/LIBCLOUD-610?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14261514#comment-14261514
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ASF GitHub Bot commented on LIBCLOUD-610:
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Github user asfgit closed the pull request at:
https://github.com/apache/libcloud/pull/424
> GCE Driver with bad private key path generates unintuitive error message
> ------------------------------------------------------------------------
>
> Key: LIBCLOUD-610
> URL: https://issues.apache.org/jira/browse/LIBCLOUD-610
> Project: Libcloud
> Issue Type: Bug
> Components: Compute
> Reporter: Jeff Tratner
> Assignee: Eric Johnson
> Priority: Minor
> Labels: Google
>
> When you pass a key to the GCE driver and the path doesn't exist, it ends up
> passing the buck down to PyCrypto, because it assumes that it isn't a
> keypath. Relevant lines are here (snipped from `__init__` method of
> `GoogleBaseAuthConnection`):
> {code:title=gce.py}
> keypath = os.path.expanduser(key)
> is_file_path = os.path.exists(keypath) and os.path.isfile(keypath)
> if is_file_path:
> with open(keypath, 'r') as f:
> key = f.read()
> super(GoogleServiceAcctAuthConnection, self).__init__(
> user_id, key, *args, **kwargs)
> {code}
> The problem is the keypath doesn't exist (and obviously it's not a file), so
> instead of a nice error message saying 'invalid file path', you get a
> ValueError from PyCrypto saying 'ValueError: RSA key format is not supported'
> which is problematic especially because you also get this error if you have
> the wrong version of PyCrypto installed. Given that PyCrypto actually expects
> bytes, I think it makes sense for libcloud to be responsible for this error.
> I encountered this using salt and there's an open issue to deal with it on
> the salt end here - https://github.com/saltstack/salt/pull/15589
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