The method ``set_resources_quota_usage_dirty`` can be used now to set
the dirty bit for a single resource or multiple ones.
Trivial-Fix
Change-Id: I13ef43b71fe7a080d55a84119784433ad84380b6
Now that we are python3 only, we should move to using the built
in version of mock that supports all of our testing needs and
remove the dependency on the "mock" package.
This patch moves all references to "import mock" to
"from unittest import mock". It also cleans up some new line
inconsistency.
Fixed an inconsistency in the OVSBridge.deferred() definition
as it needs to also have an *args argument.
Fixed an issue where an l3-agent test was mocking
functools.partial, causing a python3.8 failure.
Unit tests only, removing from tests/base.py affects
functional tests which need additional work.
Change-Id: I40e8a8410840c3774c72ae1a8054574445d66ece
The well known service type constants are in
neutron_lib.plugins.constants, but for legacy reasons a few still exist
and are referenced from neutron_lib.constants that we'd like to remove.
This patch switches references over to neutron_lib's plugin constants.
Change-Id: I1861448cec303725b30cef8f42029f467f9e03a3
This patch introduces and integrates Oslo-Versioned Object for
ResourceDelta, Reservation, Quota and QuotaUsage model classes.
Partially-Implements: blueprint adopt-oslo-versioned-objects-for-db
Co-Authored-By: Victor Morales <victor.morales@intel.com>
Change-Id: Ic058e66e6780e1f6ff25a5b2bbe7294959905765
The next dev cycle is up, so let's get rid of that old stuff.
Related-Bug: #1449462
Related-Bug: #1446021
Change-Id: I0561a6c4ea420ba06029a88db442bf7165f755df
This patch deals with the lock wait timeout and the deadlock errors
observed under high concurrency (api_workers >= 4) with the pymysql
driver. It includes the following changes:
- Stop setting dirty status for resource usage when creating
reservation, as usage of reserved resources is not tracked anymore;
- Add a variable, increasing delay when retrying make_reservation
upon a DBDeadlock error in order to reduce the chances of further
collisions;
- Enable transaction retry upon DBDeadlock errors for set_quota_usage;
- Do not resync quota usage while making reservation. This puts a lot
of stress on the database and is also wasteful since resource usage
is very likely to change again once the transaction is committed;
- Use autonested_transaction to simplify logic around when the
nested flag should be used.
Change-Id: I7a335f9ebea3c0d6fee6e6b757554e045a66075c
Closes-Bug: #1486134
Related-Blueprint: better-quotas
Reservations have a transient nature: a reservation lifespan
typically begins and ends with a single request.
Therefore tracking reserved amounts for each tenant and resource
is not nearly as efficient as tracking resource usage.
Indeed it is fairly easy to verify that the overhead for tracking
reserved amounts is much greater than the one needed for counting
active reservations for each tenant and resource.
This patch removes the logic for tracking reservations, and
replaces it with an explicit count of active reservations.
Please note that this patch does not adjust accordingly the
ResourceUsage DB model. This will be done in a separate patch with
an expand migration; this should avoid most merge conflicts before
the final patch for restoring reservation logic merges.
Related-Blueprint: better-quotas
Change-Id: Ib5e3bd61c1bc0fc8a5d612dae5c1740a8834a980
Add the concept of resource reservation in neutron.
Usage tracking logic is also updated to support reservations.
Reservations are not however available with the now deprecated
configuration-based quota driver.
The base API controller will now use reservations to perform
quota checks rather than counting resource usage and then
invoking the limit_check routine.
The limit_check routine however has not been removed and
depreacated as a part of this patch. In order to ensure all
quota drivers expose a consistent interface, a
make_reservation method has been added to the configuration
based driver as well. This method simply performs "old-style"
limit checks by counting resource usage and then invoking
limit_check.
DocImpact
Implements blueprint better-quotas.
Change-Id: Ifea07f461def564884af5b291c8a56655a4d818b
This patch introduces database support for tracking Neutron
resource usage data. A single DB model class tracks usage
info for all neutron resources.
The patch also provides a simple API for managing resource
usage info, as well as unit tests providing coverage for
this API.
This patch also makes a slight change to the ContextBase
class, adding the ability to explicitly set is_advsvc at
initialization time. While this probably makes no difference
for practical use of the context class, it simplifies
development of DB-only unit tests.
Related-Blueprint: better-quotas
Change-Id: I62100551b89103a21555dcc45e84195c05e89800
Rodolfo Alonso Hernandez