feat: Add control plane telemetry - scheduler eligible workers histogram - #682
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Please rebase and fix e2e tests |
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Fixes #564 (Part 3)
Description
This PR implements Part 3 of #564 by adding telemetry histogram instrumentation for
ate.scheduler.eligible_workersinateapi. It measures unassigned free worker capacity remaining after all scheduling constraint filters are applied, sampled at every scheduling decision.Key Changes:
Scheduler.Schedule()to record eligible candidate workers per pool (recordEligibleWorkers).Defined
SchedulingConstraintKey(ate.scheduling.constraint) and constraint classification values (none,required_nodes,selector) ininternal/ateattr/ateattr.go.scheduling_test.gocovering candidate counts, namespaced attributes, zero-capacity fleet states, empty fleets, sandbox class mismatches, draining workers, and constraint classifications.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/...