OpenStack Compute (Nova)

Extensions and XML templates

Registered by Kevin L. Mitchell on 2011-10-06

Currently, request extensions have to deserialize data, manipulate it, and reserialize it. This happens for each extension. This is generally not much of a problem for JSON data, but XML is expensive to deserialize and reserialize, and it is currently impossible to extend the XML without directly editing the serializer or writing an independent serializer.

This proposal is to establish new middleware which performs the XML serialization, and to also establish a means of creating XML templates, which can be extended by attaching slave templates to describe the extra data that an extension may wish to include.

Blueprint information

Status:
Complete
Approver:
Vish Ishaya
Priority:
Low
Drafter:
None
Direction:
Approved
Assignee:
Kevin L. Mitchell
Definition:
Approved
Series goal:
Accepted for essex
Implementation:
Implemented
Milestone target:
milestone icon 2012.1
Started by
Kevin L. Mitchell on 2011-10-25
Completed by
Kevin L. Mitchell on 2011-10-25

Related branches

Sprints

Whiteboard

Note: I have already written much of the code for this, and am slowly converting nova-api to use templates for XML serialization. I am proceeding carefully, so as to ensure that the XML returned will be identical to that returned by the hand-coded serializers. -Vek

Gerrit topic: https://review.openstack.org/#q,topic:bp/xml-templates,n,z

Addressed by: https://review.openstack.org/818
    Add XML templates.

(?)

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