[GitHub] [libcloud] kartiksubbarao opened a new issue #1346: GCE ex_list_instancegroups('all') raises KeyError 'zone'

[GitBox <gi...@apache.org>]

kartiksubbarao opened a new issue #1346: GCE ex_list_instancegroups('all') raises KeyError 'zone'
URL: https://github.com/apache/libcloud/issues/1346
 
 
   ## Summary
   
   The GCE ex_list_instancegroups('all') call raises KeyError 'zone'.
   
   ## Detailed Information
   
   Libcloud 2.5.0
   Python 3.5
   Ubuntu 16.04.6 LTS
   
   The error is caused by line 9092 of gce.py in the `_to_instancegroup()` function:
   ```
   zone = self.ex_get_zone(instancegroup['zone'])
   ```
   The code is expecting the instancegroup dict to have a `zone` attribute, but that's not always the case. The underlying GCE API endpoint `/aggregated/instanceGroups` can also return objects that have a `region` attribute but not a `zone` attribute. Example:
   
   ```
   {'creationTimestamp': '2019-05-20T12:00:00.000-08:00',
    'description': 'This instance group is controlled by Regional Instance Group '
                   "Manager 'abcd-ef-ghij'. To modify instances in this group, "
                   'use the Regional Instance Group Manager API: '
                   'https://cloud.google.com/compute/docs/reference/latest/instanceGroupManagers',
    'fingerprint': 'AbCdEfGHiJK=',
    'id': '12345678901234567',
    'kind': 'compute#instanceGroup',
    'name': 'abcd-ef-ghij',
    'namedPorts': [{'name': 'https', 'port': 443}],
    'network': 'https://www.googleapis.com/compute/v1/projects/testproj1/global/networks/ab',
    'region': 'https://www.googleapis.com/compute/v1/projects/testproj1/regions/us-west1',
    'selfLink': 'https://www.googleapis.com/compute/v1/projects/testproj1/regions/us-west1/instanceGroups/abcd-ef-ghij',
    'size': 0,
    'subnetwork': 'https://www.googleapis.com/compute/v1/projects/testproj1/regions/us-west1/subnetworks/asdf1234'}
   ```

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