Matt Riedemann
2d84a564fb
This builds on change I1233fbbaebd1750f572432bf74759b94408a17e3 which added a functional test to create 10 servers with 255 BDMs each using the two images. That scenario results in 2551 calls to the image service to get the images. While an unrealistic scenario, it shows how inefficient this can be even in a simple multi-create request where each server has one or more BDMs that are using one or more of the same images. This change adds a simple cache that is used while processing the list of instances to create and the list of BDMs per instance that are using a source_type of 'image' to validate the image. This drops the image GET calls in the functional test from 2551 to 3. The functional test verifies the cache is being used properly. Existing unit tests are updated for the method signature changes. Note that some API controller tests were mocking a bit too deep and ignoring all of the parameters to the _validate_bdm mock so rather than continue that pattern the assertions are just changed to assert_called_once() since the tests clearly don't care about the actual parameters passed to that method. Change-Id: Ibd51d6fc2d4c9fd142ba17f2f87214bb62f72440 Closes-Bug: #1846777
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Team and repository tags
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.. image:: https://governance.openstack.org/tc/badges/nova.svg
:target: https://governance.openstack.org/tc/reference/tags/index.html
.. Change things from this point on
OpenStack Nova
==============
OpenStack Nova provides a cloud computing fabric controller, supporting a wide
variety of compute technologies, including: libvirt (KVM, Xen, LXC and more),
Hyper-V, VMware, XenServer, OpenStack Ironic and PowerVM.
Use the following resources to learn more.
API
---
To learn how to use Nova's API, consult the documentation available online at:
- `Compute API Guide <https://docs.openstack.org/api-guide/compute/>`__
- `Compute API Reference <https://docs.openstack.org/api-ref/compute/>`__
For more information on OpenStack APIs, SDKs and CLIs in general, refer to:
- `OpenStack for App Developers <https://www.openstack.org/appdev/>`__
- `Development resources for OpenStack clouds
<https://developer.openstack.org/>`__
Operators
---------
To learn how to deploy and configure OpenStack Nova, consult the documentation
available online at:
- `OpenStack Nova <https://docs.openstack.org/nova/>`__
In the unfortunate event that bugs are discovered, they should be reported to
the appropriate bug tracker. If you obtained the software from a 3rd party
operating system vendor, it is often wise to use their own bug tracker for
reporting problems. In all other cases use the master OpenStack bug tracker,
available at:
- `Bug Tracker <https://bugs.launchpad.net/nova>`__
Developers
----------
For information on how to contribute to Nova, please see the contents of the
CONTRIBUTING.rst.
Any new code must follow the development guidelines detailed in the HACKING.rst
file, and pass all unit tests.
Further developer focused documentation is available at:
- `Official Nova Documentation <https://docs.openstack.org/nova/>`__
- `Official Client Documentation
<https://docs.openstack.org/python-novaclient/>`__
Other Information
-----------------
During each `Summit`_ and `Project Team Gathering`_, we agree on what the whole
community wants to focus on for the upcoming release. The plans for nova can
be found at:
- `Nova Specs <http://specs.openstack.org/openstack/nova-specs/>`__
.. _Summit: https://www.openstack.org/summit/
.. _Project Team Gathering: https://www.openstack.org/ptg/