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[OpenStack Infra <1599169@xxxxxxxxxxxxxxxxxx>]

Reviewed:  https://review.openstack.org/337323
Committed: https://git.openstack.org/cgit/openstack/glance/commit/?id=2b4e92141e212ed46df79fefca99d96aed7c2f86
Submitter: Jenkins
Branch:    master

commit 2b4e92141e212ed46df79fefca99d96aed7c2f86
Author: Marc Abramowitz <marc@xxxxxxxxxxxxxxxxxxx>
Date:   Mon Jul 4 09:52:12 2016 -0700

    glance-replicator: size: Handle no args better
    
    Check if `args is None` before doing `len(args)` to avoid `object of type
    'NoneType'` has no len()` error.
    
    Closes-Bug: #1599169
    
    Change-Id: I66b5845cf65b73e701f94b86ba43268342c82e22


** Changed in: glance
       Status: In Progress => Fix Released

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https://bugs.launchpad.net/bugs/1599169

Title:
  glance-replicator size raises "object of type 'NoneType' has no len()"
  exception when no args provided

Status in Glance:
  Fix Released

Bug description:
  We should check if `args is None` before doing `len(args)` to avoid a `object of type
  'NoneType'` has no len()` error.

  Currently what happens:

  ```
  $ glance-replicator size
  2016-07-04 09:51:19.030 30204 ERROR glance.cmd.replicator [-] replication_size size <server:port>

      Determine the size of a glance instance if dumped to disk.

      server:port: the location of the glance instance.

  ERROR: object of type 'NoneType' has no len()
  ```

  What I expect to happen:

  ```
  $ glance-replicator size
  2016-07-04 09:52:02.389 30483 ERROR glance.cmd.replicator [-] replication_size size <server:port>

      Determine the size of a glance instance if dumped to disk.

      server:port: the location of the glance instance.

  ERROR: Too few arguments.
  ```

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