The previously introduced token caching mechanism [1] reduces token
requests to subclouds and also effectively handles Keystone endpoint
caching, as the endpoint catalog is cached alongside tokens.
We avoid unnecessary creation of `OpenStackDriver` instances solely
for retrieving service endpoints, significantly reducing redundant
Keystone connections and improving performance.
[1] https://review.opendev.org/c/starlingx/distcloud/+/931830
Test Plan:
PASS - Deploy a subcloud and verify token caching behavior
PASS - Deploy a subcloud with remote install
PASS - Prestage a subcloud for install and software deployment,
validating token caching during the process
PASS - Manage a subcloud for the first time and verify that the
initial sync functions as expected.
PASS - Unmanage a subcloud, then manage the subcloud again.
PASS - BnR scalability test
PASS - Test DC orchestration sw-deploy
PASS - Scalability test
PASS - Geo-Redundancy test
PASS - Subcloud network reconfiguration test
Story: 2011311
Task: 52217
Change-Id: I2ff8c9c95052a7c3d0c495f481f48c1eb239c253
Signed-off-by: Hugo Brito <hugo.brito@windriver.com>
d237af07ca