feat: Add control plane telemetry - workerpool desired and ready workers gauges - #826
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Co-authored-by: Jeff Luo <jeffluoo@google.com>
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Part of #564 (Part 4, Fixes #564)
Description
This PR implements Part 4 of #564 by adding OpenTelemetry gauge instrumentation for
ate.workerpool.desired_workersandate.workerpool.ready_workersinatecontroller.Key Changes:
ReadyReplicas int32toWorkerPoolStatuswith+kubebuilder:printcolumn:name="Ready"annotation inpkg/api/v1alpha1/workerpool_types.goand regenerated the CRD manifest.WorkerPoolReconciler.syncStatusto synchronizedep.Status.ReadyReplicasintowp.Status.ReadyReplicas.InitMetrics(meter)registeringate.workerpool.desired_workersandate.workerpool.ready_workersas OpenTelemetry Observable UpDownCounters ({worker}) with an asynchronous observer callback that samples controller-runtime's local informer cache (r.Client.List).ateattr.WorkerPoolNamespaceKeyandateattr.WorkerPoolNameKey.Testing
go test -buildvcs=false ./cmd/ateapi/internal/controlapi/...go test -buildvcs=false ./cmd/atenet/internal/router/...make testE2E Test
./hack/create-kind-cluster.sh./hack/install-ate-kind.sh --deploy-ate-system --deploy-demo-counter./hack/run-e2e.sh ./internal/e2e/suites/metrics/...