Automatic merge from submit-queue (batch tested with PRs 50967, 50505, 50706, 51033, 51028)
teach gce cloud to handle alpha/beta operations v2
Alternative to #50704
This one feels cleaner. BUT, type assertion problems cannot be exposed at compile time.
Please let me know what you think. This will set the precedence for consuming GCE alpha/beta API.
cc: @thockin @yujuhong @saad-ali @MrHohn
```release-note
NONE
```
Automatic merge from submit-queue (batch tested with PRs 45813, 49594, 49443, 49167, 47539)
GCE: Adding unit test for ensureStaticIP
**What this PR does / why we need it**:
Entry into unit testing GCE loadbalancer code by testing `ensureStaticIP` which had a bug in 1.7.0.
@bowei @freehan @MrHohn @dnardo @thockin, any thoughts and comments on how we could unit test LB code moving forward? I think there are many areas we can split functions into smaller ones for easier testing - firewallNeedsUpdate being an example of that. However, it seems to me that we still need to mock our GCP calls for some functions that heavily revolve around API calls. A dream goal would be to have a unit test that can call EnsureLoadBalancer. Now that we have shared resources between different services and ingresses (firewalls, instance groups, [future features]), being able to setup different scenarios without depending on E2E tests would be awesome. However, I'm not sure how reachable that goal would be.
Most importantly, let's not make things worse. If you have advice on anti-patterns to avoid, please speak up.
```release-note
NONE
```
Automatic merge from submit-queue
Initialize cloud providers with a K8s clientBuilder
**What this PR does / why we need it**:
This PR provides each cloud provider the ability to generate kubernetes clients. Either the full access or service account client builder is passed from the controller manager. Cloud providers could need to retrieve information from the cluster that isn't provided through defined interfaces, and this seems more preferable to adding parameters.
Please leave your thoughts/comments.
**Release note**:
```release-note
NONE
```
The new metrics is:
cloudprovider_gce_api_request_duration_seconds{request, region, zone}
cloudprovider_gce_api_request_errors{request, region, zone}
`request` is the specific function that is used.
`region` is the target region (Will be "<n/a>" if not applicable)
`zone` is the target zone (Will be "<n/a>" if not applicable)
Note: this fixes some issues with the previous implementation of
metrics for disks:
- Time duration tracked was of the initial API call, not the entire
operation.
- Metrics label tuple would have resulted in many independent
histograms stored, one for each disk. (Did not aggregate well).
Each major interface is now in its own file. Any package private
functions that are only referenced by a particular module was also moved
to the corresponding file. All common helper functions were moved to
gce_util.go.
This change is a pure movement of code; no semantic changes were made.
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