Implementation of an image service that uses Glance as the backend
GlanceClientWrapper
(context=None, netloc=None, use_ssl=False)¶Bases: object
Glance client wrapper class that implements retries.
call
(context, method, *args, **kwargs)¶Call a glance client method.
If we get a connection error, retry the request according to CONF.glance_num_retries.
GlanceImageService
(client=None)¶Bases: object
Provides storage and retrieval of disk image objects within Glance.
add_location
(context, image_id, url, metadata)¶Add a backend location url to an image.
Returns a dict containing image metadata on success.
create
(context, image_meta, data=None)¶Store the image data and return the new image object.
delete
(context, image_id)¶Delete the given image.
Raises: |
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detail
(context, **kwargs)¶Calls out to Glance for a list of detailed image information.
download
(context, image_id, data=None)¶Calls out to Glance for data and writes data.
get_location
(context, image_id)¶Get backend storage location url.
Returns a tuple containing the direct url and locations representing the backend storage location, or (None, None) if these attributes are not shown by Glance.
list_members
(context, image_id)¶Returns a list of dicts with image member data.
show
(context, image_id)¶Returns a dict with image data for the given opaque image id.
update
(context, image_id, image_meta, data=None, purge_props=True)¶Modify the given image with the new data.
get_api_servers
(context)¶Return Iterable over shuffled api servers.
Shuffle a list of glance_api_servers and return an iterator that will cycle through the list, looping around to the beginning if necessary. If CONF.glance_api_servers is None then they will be retrieved from the catalog.
get_default_image_service
()¶get_remote_image_service
(context, image_href)¶Create an image_service and parse the id from the given image_href.
The image_href param can be an href of the form ‘http://example.com:9292/v1/images/b8b2c6f7-7345-4e2f-afa2-eedaba9cbbe3’, or just an id such as ‘b8b2c6f7-7345-4e2f-afa2-eedaba9cbbe3’. If the image_href is a standalone id, then the default image service is returned.
Parameters: | image_href – href that describes the location of an image |
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Returns: | a tuple of the form (image_service, image_id) |
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