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[Bug 1208656] Re: direct downloads plugin schema errors on python 2.6

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** Changed in: nova
       Status: Fix Committed => Fix Released

** Changed in: nova
    Milestone: None => havana-3

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https://bugs.launchpad.net/bugs/1208656

Title:
  direct downloads plugin schema errors on python 2.6

Status in OpenStack Compute (Nova):
  Fix Released

Bug description:
  An hour ago (commit 6f9ed562d5f6df1dc16029dcaffd4d2e6601099d)  I
  started seeing the following stack traces in Nova's compute.log file
  on RHEL/Centos builds when trying to boot an instance:

  https://github.com/openstack/nova/commit/6f9ed562d5f6df1dc16029dcaffd4d2e6601099d

  From a high level the issue seems to be related to the fact that the
  new  'Add plug-in modules for direct downloads of glance locations'
  makes use of the newer glance v2 API under the covers which seems to
  be causing some Schema errors on distro's that use python 2.6.

  -----

  2013-08-06 00:15:32.013 28131 ERROR nova.virt.libvirt.driver [-] [instance: 8a4ed51c-3387-459e-b25f-4ad8dfe99c44] During wait destroy, instance disappeared.
  2013-08-06 00:15:33.944 28131 ERROR nova.compute.manager [req-b369d3fe-d4e0-49c3-8d09-908ecb6ab32d c311bc3b6c054b1bae5809faf0940fdc 587235ae1f784c73a74843b4d3c68219] [instance: 8a4ed51c-3387-459e-b25f-4ad8dfe99c44] Error: ['Traceback (most recent call last):\n', '  File "/usr/lib/python2.6/site-packages/nova/compute/manager.py", line 1090, in _build_instance\n    set_access_ip=set_access_ip)\n', '  File "/usr/lib/python2.6/site-packages/nova/compute/manager.py", line 1345, in _spawn\n    LOG.exception(_(\'Instance failed to spawn\'), instance=instance)\n', '  File "/usr/lib/python2.6/site-packages/nova/compute/manager.py", line 1341, in _spawn\n    block_device_info)\n', '  File "/usr/lib/python2.6/site-packages/nova/virt/libvirt/driver.py", line 1668, in spawn\n    admin_pass=admin_password)\n', '  File "/usr/lib/python2.6/site-packages/nova/virt/libvirt/driver.py", line 1931, in _create_image\n    project_id=instance[\'project_id\'])\n', '  File "/usr/lib/python2.6/site-packages/nova/virt/libvirt/imagebackend.py", line 158, in cache\n    *args, **kwargs)\n', '  File "/usr/lib/python2.6/site-packages/nova/virt/libvirt/imagebackend.py", line 218, in create_image\n    prepare_template(target=base, *args, **kwargs)\n', '  File "/usr/lib/python2.6/site-packages/nova/openstack/common/lockutils.py", line 246, in inner\n    return f(*args, **kwargs)\n', '  File "/usr/lib/python2.6/site-packages/nova/virt/libvirt/imagebackend.py", line 146, in call_if_not_exists\n    fetch_func(target=target, *args, **kwargs)\n', '  File "/usr/lib/python2.6/site-packages/nova/virt/libvirt/utils.py", line 613, in fetch_image\n    images.fetch_to_raw(context, image_id, target, user_id, project_id)\n', '  File "/usr/lib/python2.6/site-packages/nova/virt/images.py", line 196, in fetch_to_raw\n    fetch(context, image_href, path_tmp, user_id, project_id)\n', '  File "/usr/lib/python2.6/site-packages/nova/virt/images.py", line 191, in fetch\n    image_service.download(context, image_id, image_file)\n', '  File "/usr/lib/python2.6/site-packages/nova/image/glance.py", line 316, in download\n    locations = self._get_locations(context, image_id)\n', '  File "/usr/lib/python2.6/site-packages/nova/image/glance.py", line 293, in _get_locations\n    _reraise_translated_image_exception(image_id)\n', '  File "/usr/lib/python2.6/site-packages/nova/image/glance.py", line 291, in _get_locations\n    image_meta = client.call(context, 2, \'get\', image_id)\n', '  File "/usr/lib/python2.6/site-packages/nova/image/glance.py", line 201, in call\n    return getattr(client.images, method)(*args, **kwargs)\n', '  File "/usr/lib/python2.6/site-packages/glanceclient/v2/images.py", line 74, in get\n    return self.model(**body)\n', '  File "/usr/lib/python2.6/site-packages/warlock/core.py", line 32, in __init__\n    base_class.__init__(self, *args, **kwargs)\n', '  File "/usr/lib/python2.6/site-packages/warlock/model.py", line 33, in __init__\n    self.validate(d)\n', '  File "/usr/lib/python2.6/site-packages/warlock/model.py", line 131, in validate\n    jsonschema.validate(obj, self.schema)\n', '  File "/usr/lib/python2.6/site-packages/jsonschema.py", line 791, in validate\n    cls.check_schema(schema)\n', '  File "/usr/lib/python2.6/site-packages/jsonschema.py", line 163, in check_schema\n    error.message, validator=error.validator, path=error.path,\n', "SchemaError: {u'required': [u'url', u'metadata'], u'type': u'object', u'properties': {u'url': {u'type': u'string', u'maxLength': 255}, u'metadata': {u'type': u'object'}}} is not of type {u'$ref': u'#'}, u'array'\n"]
  2013-08-06 00:15:38.837 28131 ERROR nova.compute.manager [req-b369d3fe-d4e0-49c3-8d09-908ecb6ab32d c311bc3b6c054b1bae5809faf0940fdc 587235ae1f784c73a74843b4d3c68219] [instance: 8a4ed51c-3387-459e-b25f-4ad8dfe99c44] Instance failed to spawn
  2013-08-06 00:15:38.837 28131 TRACE nova.compute.manager [instance: 8a4ed51c-3387-459e-b25f-4ad8dfe99c44] Traceback (most recent call last):
  2013-08-06 00:15:38.837 28131 TRACE nova.compute.manager [instance: 8a4ed51c-3387-459e-b25f-4ad8dfe99c44]   File "/usr/lib/python2.6/site-packages/nova/compute/manager.py", line 1341, in _spawn
  2013-08-06 00:15:38.837 28131 TRACE nova.compute.manager [instance: 8a4ed51c-3387-459e-b25f-4ad8dfe99c44]     block_device_info)
  2013-08-06 00:15:38.837 28131 TRACE nova.compute.manager [instance: 8a4ed51c-3387-459e-b25f-4ad8dfe99c44]   File "/usr/lib/python2.6/site-packages/nova/virt/libvirt/driver.py", line 1668, in spawn
  2013-08-06 00:15:38.837 28131 TRACE nova.compute.manager [instance: 8a4ed51c-3387-459e-b25f-4ad8dfe99c44]     admin_pass=admin_password)
  2013-08-06 00:15:38.837 28131 TRACE nova.compute.manager [instance: 8a4ed51c-3387-459e-b25f-4ad8dfe99c44]   File "/usr/lib/python2.6/site-packages/nova/virt/libvirt/driver.py", line 1931, in _create_image
  2013-08-06 00:15:38.837 28131 TRACE nova.compute.manager [instance: 8a4ed51c-3387-459e-b25f-4ad8dfe99c44]     project_id=instance['project_id'])
  2013-08-06 00:15:38.837 28131 TRACE nova.compute.manager [instance: 8a4ed51c-3387-459e-b25f-4ad8dfe99c44]   File "/usr/lib/python2.6/site-packages/nova/virt/libvirt/imagebackend.py", line 158, in cache
  2013-08-06 00:15:38.837 28131 TRACE nova.compute.manager [instance: 8a4ed51c-3387-459e-b25f-4ad8dfe99c44]     *args, **kwargs)
  2013-08-06 00:15:38.837 28131 TRACE nova.compute.manager [instance: 8a4ed51c-3387-459e-b25f-4ad8dfe99c44]   File "/usr/lib/python2.6/site-packages/nova/virt/libvirt/imagebackend.py", line 218, in create_image
  2013-08-06 00:15:38.837 28131 TRACE nova.compute.manager [instance: 8a4ed51c-3387-459e-b25f-4ad8dfe99c44]     prepare_template(target=base, *args, **kwargs)
  2013-08-06 00:15:38.837 28131 TRACE nova.compute.manager [instance: 8a4ed51c-3387-459e-b25f-4ad8dfe99c44]   File "/usr/lib/python2.6/site-packages/nova/openstack/common/lockutils.py", line 246, in inner
  2013-08-06 00:15:38.837 28131 TRACE nova.compute.manager [instance: 8a4ed51c-3387-459e-b25f-4ad8dfe99c44]     return f(*args, **kwargs)
  2013-08-06 00:15:38.837 28131 TRACE nova.compute.manager [instance: 8a4ed51c-3387-459e-b25f-4ad8dfe99c44]   File "/usr/lib/python2.6/site-packages/nova/virt/libvirt/imagebackend.py", line 146, in call_if_not_exists
  2013-08-06 00:15:38.837 28131 TRACE nova.compute.manager [instance: 8a4ed51c-3387-459e-b25f-4ad8dfe99c44]     fetch_func(target=target, *args, **kwargs)
  2013-08-06 00:15:38.837 28131 TRACE nova.compute.manager [instance: 8a4ed51c-3387-459e-b25f-4ad8dfe99c44]   File "/usr/lib/python2.6/site-packages/nova/virt/libvirt/utils.py", line 613, in fetch_image
  2013-08-06 00:15:38.837 28131 TRACE nova.compute.manager [instance: 8a4ed51c-3387-459e-b25f-4ad8dfe99c44]     images.fetch_to_raw(context, image_id, target, user_id, project_id)
  2013-08-06 00:15:38.837 28131 TRACE nova.compute.manager [instance: 8a4ed51c-3387-459e-b25f-4ad8dfe99c44]   File "/usr/lib/python2.6/site-packages/nova/virt/images.py", line 196, in fetch_to_raw
  2013-08-06 00:15:38.837 28131 TRACE nova.compute.manager [instance: 8a4ed51c-3387-459e-b25f-4ad8dfe99c44]     fetch(context, image_href, path_tmp, user_id, project_id)
  2013-08-06 00:15:38.837 28131 TRACE nova.compute.manager [instance: 8a4ed51c-3387-459e-b25f-4ad8dfe99c44]   File "/usr/lib/python2.6/site-packages/nova/virt/images.py", line 191, in fetch
  2013-08-06 00:15:38.837 28131 TRACE nova.compute.manager [instance: 8a4ed51c-3387-459e-b25f-4ad8dfe99c44]     image_service.download(context, image_id, image_file)
  2013-08-06 00:15:38.837 28131 TRACE nova.compute.manager [instance: 8a4ed51c-3387-459e-b25f-4ad8dfe99c44]   File "/usr/lib/python2.6/site-packages/nova/image/glance.py", line 316, in download
  2013-08-06 00:15:38.837 28131 TRACE nova.compute.manager [instance: 8a4ed51c-3387-459e-b25f-4ad8dfe99c44]     locations = self._get_locations(context, image_id)
  2013-08-06 00:15:38.837 28131 TRACE nova.compute.manager [instance: 8a4ed51c-3387-459e-b25f-4ad8dfe99c44]   File "/usr/lib/python2.6/site-packages/nova/image/glance.py", line 293, in _get_locations
  2013-08-06 00:15:38.837 28131 TRACE nova.compute.manager [instance: 8a4ed51c-3387-459e-b25f-4ad8dfe99c44]     _reraise_translated_image_exception(image_id)
  2013-08-06 00:15:38.837 28131 TRACE nova.compute.manager [instance: 8a4ed51c-3387-459e-b25f-4ad8dfe99c44]   File "/usr/lib/python2.6/site-packages/nova/image/glance.py", line 291, in _get_locations
  2013-08-06 00:15:38.837 28131 TRACE nova.compute.manager [instance: 8a4ed51c-3387-459e-b25f-4ad8dfe99c44]     image_meta = client.call(context, 2, 'get', image_id)
  2013-08-06 00:15:38.837 28131 TRACE nova.compute.manager [instance: 8a4ed51c-3387-459e-b25f-4ad8dfe99c44]   File "/usr/lib/python2.6/site-packages/nova/image/glance.py", line 201, in call
  2013-08-06 00:15:38.837 28131 TRACE nova.compute.manager [instance: 8a4ed51c-3387-459e-b25f-4ad8dfe99c44]     return getattr(client.images, method)(*args, **kwargs)
  2013-08-06 00:15:38.837 28131 TRACE nova.compute.manager [instance: 8a4ed51c-3387-459e-b25f-4ad8dfe99c44]   File "/usr/lib/python2.6/site-packages/glanceclient/v2/images.py", line 74, in get
  2013-08-06 00:15:38.837 28131 TRACE nova.compute.manager [instance: 8a4ed51c-3387-459e-b25f-4ad8dfe99c44]     return self.model(**body)
  2013-08-06 00:15:38.837 28131 TRACE nova.compute.manager [instance: 8a4ed51c-3387-459e-b25f-4ad8dfe99c44]   File "/usr/lib/python2.6/site-packages/warlock/core.py", line 32, in __init__
  2013-08-06 00:15:38.837 28131 TRACE nova.compute.manager [instance: 8a4ed51c-3387-459e-b25f-4ad8dfe99c44]     base_class.__init__(self, *args, **kwargs)
  2013-08-06 00:15:38.837 28131 TRACE nova.compute.manager [instance: 8a4ed51c-3387-459e-b25f-4ad8dfe99c44]   File "/usr/lib/python2.6/site-packages/warlock/model.py", line 33, in __init__
  2013-08-06 00:15:38.837 28131 TRACE nova.compute.manager [instance: 8a4ed51c-3387-459e-b25f-4ad8dfe99c44]     self.validate(d)
  2013-08-06 00:15:38.837 28131 TRACE nova.compute.manager [instance: 8a4ed51c-3387-459e-b25f-4ad8dfe99c44]   File "/usr/lib/python2.6/site-packages/warlock/model.py", line 131, in validate
  2013-08-06 00:15:38.837 28131 TRACE nova.compute.manager [instance: 8a4ed51c-3387-459e-b25f-4ad8dfe99c44]     jsonschema.validate(obj, self.schema)
  2013-08-06 00:15:38.837 28131 TRACE nova.compute.manager [instance: 8a4ed51c-3387-459e-b25f-4ad8dfe99c44]   File "/usr/lib/python2.6/site-packages/jsonschema.py", line 791, in validate
  2013-08-06 00:15:38.837 28131 TRACE nova.compute.manager [instance: 8a4ed51c-3387-459e-b25f-4ad8dfe99c44]     cls.check_schema(schema)
  2013-08-06 00:15:38.837 28131 TRACE nova.compute.manager [instance: 8a4ed51c-3387-459e-b25f-4ad8dfe99c44]   File "/usr/lib/python2.6/site-packages/jsonschema.py", line 163, in check_schema
  2013-08-06 00:15:38.837 28131 TRACE nova.compute.manager [instance: 8a4ed51c-3387-459e-b25f-4ad8dfe99c44]     error.message, validator=error.validator, path=error.path,
  2013-08-06 00:15:38.837 28131 TRACE nova.compute.manager [instance: 8a4ed51c-3387-459e-b25f-4ad8dfe99c44] SchemaError: {u'required': [u'url', u'metadata'], u'type': u'object', u'properties': {u'url': {u'type': u'string', u'maxLength': 255}, u'metadata': {u'type': u'object'}}} is not of type {u'$ref': u'#'}, u'array'
  2013-08-06 00:15:38.837 28131 TRACE nova.compute.manager [instance: 8a4ed51c-3387-459e-b25f-4ad8dfe99c44]

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