OpenStack Networking (Neutron)
e135a8221d
This new quota driver, ``DbQuotaNoLockDriver``, does not create a lock per (resource, project_id) but retrieves the instant (resource, project_id) usage and the current (resource, project_id) reservations. If the requested number of resources fit the available quota, a new ``Reservation`` register is created with the amount of units requested. All those operations are done inside a DB transaction context. That means the amount of resources and reservations is guaranteed inside this transaction (depending on the DB backend isolation level defined) and the new reservation created will not clash with other DB transation. That will guarantee the number of resources and instant reservations never exceed the quota limits defined for this (resource, project_id). NOTES: - This change tries to be as unobtrusive as possible. The new driver uses the same ``DbQuotaDriver`` dabatase tables (except for ``QuotaUsage``) and the same Quota engine API, located in ``neutron.quota``. However, the Quota engine resources implements some particular API actions like "dirty", that are not used in the new driver. - The Pecan Quota enforcement hooks, ``neutron.pecan_wgsi.hooks.quota_enforcement``, execute actions like "resync", "mark_resources_dirty" or "set_resources_dirty", that has no meaning in the new driver. - The isolation between the Quota engine and the Pecan hook, and the driver itself is not clearly defined. A refactor of the Quota engine, Quota service, Quota drivers and a common API between the driver and the engine is needed. - If ``DbQuotaDriver`` is deprecated, ``CountableResource`` and ``TrackedResource`` will be joined in a single class. This resource class will have a count method (countable) or a hard dependency on a database table (tracked resource). The only difference will be the "count" method implementation. Closes-Bug: #1926787 Change-Id: I4f98c6fcd781459fd7150aff426d19c7fdfa98c1 |
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| api-ref | ||
| devstack | ||
| doc | ||
| etc | ||
| neutron | ||
| playbooks | ||
| rally-jobs | ||
| releasenotes | ||
| roles | ||
| tools | ||
| vagrant/ovn | ||
| zuul.d | ||
| .coveragerc | ||
| .gitignore | ||
| .gitreview | ||
| .mailmap | ||
| .pylintrc | ||
| .stestr.conf | ||
| bindep.txt | ||
| CONTRIBUTING.rst | ||
| HACKING.rst | ||
| LICENSE | ||
| lower-constraints.txt | ||
| plugin.spec | ||
| README.rst | ||
| requirements.txt | ||
| setup.cfg | ||
| setup.py | ||
| test-requirements.txt | ||
| TESTING.rst | ||
| tox.ini | ||
OpenStack Neutron
Neutron is an OpenStack project to provide "network connectivity as a service" between interface devices (e.g., vNICs) managed by other OpenStack services (e.g., Nova).
To learn more about neutron:
- Documentation: https://docs.openstack.org/neutron/latest/
- Features: https://specs.openstack.org/openstack/neutron-specs
- Defects: https://launchpad.net/neutron
- Release notes: https://docs.openstack.org/releasenotes/neutron/index.html
- Source: https://opendev.org/openstack/neutron
Get in touch via email. Use [Neutron] in your subject.
To learn how to contribute, please read the CONTRIBUTING.rst file.