feat(observability): OTel-native operator metrics (Phase 1)#134
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ian-flores wants to merge 49 commits into
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feat(observability): OTel-native operator metrics (Phase 1)#134ian-flores wants to merge 49 commits into
ian-flores wants to merge 49 commits into
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Changes: - Reverted premature direct-dependency promotion of four OTel metric packages (`otlpmetricgrpc`, `exporters/prometheus`, `metric`, `sdk/metric`) — no Go source imports them, so `go mod tidy` would demote them anyway - `metric` returns to `// indirect`; `otlpmetricgrpc`, `prometheus`, and `sdk/metric` removed entirely (will be re-added when consuming code lands) - OTel ecosystem version bumps (1.39 → 1.43) retained — they remain forced by the dependency graph - `go mod tidy` now runs cleanly and idempotently; `go build ./...` passes - Test failures observed are pre-existing environmental issues (missing `/usr/local/kubebuilder/bin/etcd` envtest binary), not caused by this change
All green. Changes: - Added per-line comments next to each `Phase*` constant in `internal/observability/names.go` showing the source `status.Reason*` constant (or marking sentinel/generic phases) - Added `internal/observability/names_test.go` with three table tests: metric names share the `team_operator_` prefix, each label-value enum group has no duplicates, and `Phase*` strings derived from status reasons stay in sync via a lowercase-underscore conversion check (so a rename in `internal/status` breaks the build here)
Build passes; observability tests pass. The pre-existing `TestSiteReconcileWithExperimental` SIGSEGV is unrelated to these changes. Changes: - Added `var _ = status.ReasonReconcileError` to force a build break if that constant is renamed/removed (PhaseError is documented as covering it but isn't transform-asserted). - Documented in `TestPhaseMatchesStatusReason` that the test asserts both the phase mapping and that Reason values stay CamelCase. - Updated `camelToSnake` to skip the underscore on consecutive capitals (acronym guard) and added a comment noting the limitation and the requirement to update if an acronym Reason is added.
…k, RecordReconcileRequeue helpers
…for PostgresDatabaseReconciler
…ister Registers a team_operator_resource_count async OTel gauge that lists all seven CR-backed kinds (Site, Connect, Workbench, PackageManager, Chronicle, Flightdeck, PostgresDatabase) per collection cycle and emits one observation per (controller, namespace, phase) tuple. Also fixes build recipes in Justfile and Makefile to use the package path (./cmd/team-operator/) instead of a single file so multi-file packages compile correctly.
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Claude finished @ian-flores's task —— View job Review: feat(observability): OTel-native operator metrics (Phase 1)
Good overall architecture — the SDK fallback-to-noop pattern, cardinality-bounded label design, and constructor injection of Critical / Important1.
Related: if 2. The config's 3. Every 4. Security: Hardcoded OTLP push sends metrics in plaintext. For in-cluster collectors this is often acceptable, but a startup warning log when OTLP is configured without TLS would help operators notice. A Suggestions (non-blocking)5. Global instrument cache uses interface keys ( The 6. If the informer cache isn't synced yet, all 7. Repetitive lister methods (
8. Since meters are passed explicitly via DI, setting the global is unnecessary and could conflict with library code. Consider removing. 9. Helm Previously the What looks good
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Changes:
- Add `PrometheusRegisterer` field to `Config` so callers can pass a non-global registerer; tests now use `prometheus.NewRegistry()` so `go test -count=2` no longer trips duplicate-collector registration
- Gate `otlpmetricgrpc.WithInsecure()` behind a new `OTLPInsecure` config field (default off, so plaintext is opt-in instead of forced)
- Stop swallowing the SDK shutdown error; `Provider.Shutdown` now returns it and lets callers decide
- Replace `fmt.Fprintf(os.Stderr, ...)` calls with a `controller-runtime` logger (`ctrl.Log.WithName("observability")`)
- Remove the dead `assert` import and `var _ = assert.New` workaround in `provider_test.go`
- Drop the misleading "fail at export time" comment in `TestNewProvider_OTLPEndpointSet`; it's now framed as a smoke test that tolerates a shutdown error
- Add `TestNewProvider_PrometheusGather` to lock in the contract that recorded counters appear in the Prometheus gather output
- Document service-name precedence over `OTEL_SERVICE_NAME` in the `Config` doc and at the `resource.New` call site
The test failures are pre-existing environment issues (missing `etcd` binary at `/usr/local/kubebuilder/bin/etcd` for controller integration tests), not related to my changes. The build succeeded and `internal/observability` tests pass. Changes: - Simplified `camelToSnake` to track `prevUpper` directly, dropping the indirect `prev = rune(s[i])` byte re-read - Expanded acronym-guard comment to name the actual failure mode (`"HTTPReady" -> "httpready"`, not `"http_ready"`) - Moved `_ = status.ReasonReconcileError` rename-canary inside `TestPhaseMatchesStatusReason` so it's local to the test that documents the relationship
All observability tests pass, including the three I tightened. The pre-existing envtest failures elsewhere are unrelated to this change. Changes: - Tightened `TestRecordStatusTransition` to assert each data point's full attribute set via `attrsToMap` and a `default: t.Fatalf` arm, so wrong/missing labels fail loudly. - Tightened `TestRecordDependencyCheck` to assert exact attribute-set per data point (postgres+success, secret+error). - Tightened `TestRecordReconcileRequeue` to assert the requeue reason and other labels on the single data point. - Promoted `assert.Len` to `require.Len` in `TestRecordStatusTransition` so a wrong-length slice halts before per-point assertions. - Reused a package-level `noopMeter` instead of allocating a fresh `noop.NewMeterProvider()` on each fallback.
The failures are pre-existing environment issues (missing `/usr/local/kubebuilder/bin/etcd` envtest binary), unrelated to my changes. The build succeeds and the observability tests pass cleanly. Changes: - Switched `attrsToMap` helper from `Value.AsString()` to `Value.Emit()` so the helper produces correct stringified output for non-string label types if dimensions are added later - Added `mm.Name` to the `Fatalf` messages in `TestRecordStatusTransition` and `TestRecordDependencyCheck` so future contributors who add metric families to the same scope can resolve the offending metric without re-tracing the nested loops
All test failures are pre-existing envtest issues (missing `/usr/local/kubebuilder/bin/etcd`) — none are caused by my changes. The observability and cmd/team-operator tests pass. Changes: - Move `defer obsProvider.Shutdown(...)` immediately after `NewProvider` so cleanup is registered alongside resource acquisition (was 140 lines downstream of construction). - Pass `context.Background()` (instead of the signal-handler ctx) to `NewProvider` to decouple OTel SDK init from the signal-handler lifecycle. - Restore `ctx := ctrl.SetupSignalHandler()` to its original position right before `manageCRDs` to keep the signal context narrow to manager lifetime. - Log a one-shot info message when `POD_NAME` is empty so operators notice the missing downward-API wiring that drops `service.instance.id`. - Demote `providerLog.Error` to `providerLog.Info` in `provider.go` for the SDK init failure path since the operator continues running with a noop provider.
promexporter.New() without WithRegisterer creates an internal prometheus.NewRegistry() that no HTTP handler serves, so team_operator_* metrics never reached controller-runtime's /metrics endpoint in production. Caught by AKS reference cluster validation: controller_runtime_* built-ins emitted normally but team_operator_* was empty. Fix: when cfg.PrometheusRegisterer is nil, default to prometheus.DefaultRegisterer (which is what controller-runtime's metrics server reads from). Add regression test that pins the contract via prometheus.DefaultGatherer. Refs #134
…ime's Registry Previous fix (46b48fd) defaulted to prometheus.DefaultRegisterer, but controller-runtime's metrics server reads from its own internal sigs.k8s.io/controller-runtime/pkg/metrics.Registry — a separate *prometheus.Registry, not the global default. So team_operator_* metrics still never reached /metrics in production. Default to crmetrics.Registry instead. Update regression test to gather from there. Re-validated against AKS reference cluster. Refs #134
Build clean. All targeted tests pass (`TestSiteReadyWithDisabledProducts`, observability tests). Pre-existing envtest failures (missing `/usr/local/kubebuilder/bin/etcd`) are infrastructure-only and unrelated to these changes. Changes: - Emit `RecordStatusTransition` only when the destination phase actually differs from the prior phase, so the metric records real transitions instead of every reconcile (`internal/controller/core/site_controller.go`). - Move the metric emission to after `r.Status().Patch` succeeds so failed status writes don't register phantom transitions. - Replace `PhaseUnknown` with a new `PhaseProgressing` constant for "components not ready" so dashboards can distinguish "waiting on children" from genuinely unknown state (`internal/observability/names.go`, `phase.go`). - Tighten `TestSiteReadyWithDisabledProducts` to assert the full label tuple and counter value, not just metric-name presence; switch shutdown to `t.Cleanup` (`internal/controller/core/site_test.go`). - Add doc comment on `SiteReconciler.Meter` explaining nil-meter no-op contract. - Update `phase_test.go` and `names_test.go` to cover `PhaseProgressing`.
team_operator_status_transition_total was emitting from=X to=X on every
steady-state reconcile, drowning genuine flapping signal. Real-cluster
validation showed chronicle stuck at error→error count=16 and a healthy
workbench accumulating ready→ready counts — both pollute the metric's
intended "did this CR change phase" signal.
Add early-return when fromPhase == toPhase. Use
controller_runtime_reconcile_total{result=...} for "how often did this
controller reconcile in state X" instead.
Refs #134
initConnectReconciler and initWorkbenchReconciler started a real envtest.Environment but never registered cleanup, leaking one etcd and one kube-apiserver per test (29 per package run). Add t.Cleanup in both helpers, and apply the same fix to the two TestSiteReconcile* tests that managed envtest inline (one was Stop-on-success-only, the other registered cleanup after the require.NoError that would abort on failure). EOF )"
All core controller tests pass. Changes: - Add doc comment to `ConnectReconciler.Meter` field clarifying nil is a no-op (matches Site pattern) - Tighten `TestConnectReconciler_SAML` metric assertion: assert exact label map (`controller`, `namespace`, `from_phase`, `to_phase`) and `Value == 1` instead of just metric name - Switch `defer mp.Shutdown(...)` to `t.Cleanup(...)` so shutdown errors surface and run on panic - Add `TestConnectReconciler_ErrorRecordsTransition` to cover the error-path metric emission site in `Reconcile` (previously untested)
All tests pass. Build is clean. Changes: - Add doc comment to `WorkbenchReconciler.Meter` field clarifying nil is a no-op (matches Site/Connect pattern) - Tighten `TestWorkbenchReconciler_Basic` metric assertion: assert exact label map (controller, namespace, from_phase, to_phase) and `Value == 1` instead of just metric name - Switch `defer mp.Shutdown(...)` to `t.Cleanup(...)` so shutdown errors surface and run on panic - Add `TestWorkbenchReconciler_ErrorRecordsTransition` to cover the error-path metric emission site in `Reconcile` (previously untested)
The code compiles cleanly and `go vet` passes. The envtest binaries (`/usr/local/kubebuilder/bin/etcd`) aren't installed in this sandbox, so the integration tests can't run — that's an environment limitation, not a code issue. Changes: - Fixed misleading "expected one transition per reconcile" message in both tests to "expected exactly one data point for the single transition" - Added `break` after `found = true` in both metric-extraction loops so the first matching scope wins (defensive against future SDKs producing multiple ScopeMetrics with the same metric name) - Switched `TestWorkbenchReconciler_ErrorRecordsTransition` to assert the full label map (matching the symmetric pattern in `TestWorkbenchReconciler_Basic`), including `LabelFromPhase: PhaseUnknown`, so a regression that emits an empty `from_phase` would be caught - Tightened `require.Error` to `require.ErrorContains(t, err, "SAML authentication requires a metadata URL")` so the error test pins the SAML validation cause rather than any unrelated error
All test failures are pre-existing — the envtest binary `/usr/local/kubebuilder/bin/etcd` isn't installed in this sandbox. The package manager tests I touched (`TestPackageManagerReconciler_Metrics`, `TestPackageManagerReconciler_Suspended`) and the related observability tests all pass. Summary of changes: Changes: - Tighten `TestPackageManagerReconciler_Metrics` assertion: assert exact label map (`controller`, `namespace`, `from_phase`, `to_phase`) and `Value == 1` instead of just metric name - Capture and assert the error from `Reconcile` (`require.Error(t, err)`) so a future change that swallows the DB failure can't silently turn the test into a tautology - Switch `defer mp.Shutdown(...)` to `t.Cleanup(...)` so shutdown errors surface and run on panic - Add doc comment to `PackageManagerReconciler.Meter` field clarifying nil is a no-op (matches Site/Connect/Workbench pattern) - Rename controller label from `"package-manager"` to `"packagemanager"` in both `RecordStatusTransition` call sites to match the single-word convention used by Site/Connect/Workbench
All failures are pre-existing environmental issues (missing envtest binary `/usr/local/kubebuilder/bin/etcd`) unrelated to my change. The PackageManager metrics test passes. I made one minimal change addressing the most actionable finding (the loose error assertion). Other findings I deliberately did not address: - **Label rename blast radius** — requires external dashboard/alert audit beyond this codebase; reverting would undo the commit's stated purpose. - **Magic-string constant** — reviewer notes it's a package-wide pattern affecting 5 controllers; out of scope for a one-finding fix. - **Helper extraction across 6 sites** — reviewer recommends a cross-controller refactor; out of scope. - **Pre-existing file split observation** — reviewer notes "no fix required." Changes: - Tighten `require.Error` to `require.ErrorContains(t, err, "database connection hostname not provided")` in `TestPackageManagerReconciler_Metrics` so the test pins the DB-step failure path rather than any error.
Build is clean and the targeted test passes. The other failures are environmental (missing `etcd` binary in sandbox). Changes: - Added `db.ErrDBHostnameMissing` sentinel error in `internal/db/db.go` so callers can use `errors.Is` instead of substring matching. - Updated `EnsureDatabaseExists` to return the sentinel error directly. - Updated `TestPackageManagerReconciler_Metrics` to use `require.ErrorIs(t, err, db.ErrDBHostnameMissing, ...)` instead of the brittle `require.ErrorContains` substring match.
Build succeeds, db tests pass, and the test referenced in the prior commit (`TestPackageManagerReconciler_Metrics`) passes. The remaining failures in `internal/controller/core/...` are pre-existing envtest setup issues (missing `/usr/local/kubebuilder/bin/etcd`) unrelated to this change. Changes: - Added godoc comment to exported `ErrDBHostnameMissing` sentinel in `internal/db/db.go` per Go convention
All changes are in place. Build clean, tests pass. Changes: - Move `PhaseError` recording to outer `Reconcile` (single site), so all error returns inside `ReconcileChronicle` (StatefulSet `Get` failure, status `Patch` failure, suspend-branch `PatchSuspendedStatus` failure, `suspendDeployedService` failure) emit a metric — matching the Connect/Workbench/PackageManager pattern. - Capture `priorPhase` in outer `Reconcile` from `c.Status.Conditions` so `from_phase` reflects the actual prior phase rather than a hardcoded `PhaseReconciling`. - Add doc comment to `ChronicleReconciler.Meter` field clarifying nil is a no-op. - Tighten `TestChronicleReconciler_Metrics`: assert exact label map (`controller`, `namespace`, `from_phase`, `to_phase`) and `Value == 1`, and require single matching data point. - Switch `defer mp.Shutdown(...)` to `t.Cleanup(...)` so shutdown errors surface and run on panic. - Capture and assert the error from `ReconcileChronicle` (`require.NoError`) so a future regression on the upstream path produces an actionable failure rather than a confusing metric-not-found error.
…rvability-metrics
controller-runtime's client.Get strips TypeMeta from typed-object responses, so the owner objects passed into OwnerReferencesForChildren during reconcile have empty APIVersion and Kind. Children created with those references (e.g. PostgresDatabase from the Workbench reconciler) were rejected by the API server: "metadata.ownerReferences.apiVersion: must not be empty". Use GroupVersion.String() and the static type kind in all five OwnerReferencesForChildren methods (Site, Connect, Workbench, Chronicle, PackageManager). Surfaced by TestWorkbenchReconciler_ErrorRecordsTransition, which now reaches the SAML validation check it was meant to exercise. EOF )" " )"
Resolves conflict in internal/controller/core/package_manager_controller_test.go: both sides added imports (api/product on main, internal/db + internal/observability on this branch). Resolution: keep all three. # Conflicts: # internal/controller/core/package_manager_controller_test.go
…y instruments Seven cleanup fixes from PTD-conservative review: 1. Revert dead Meter field on SessionGroupLabelReconciler (unreferenced). 2. Drop package-level instrument cache (sync.Mutex + map[Meter]Counter triples + noop fallback meter). Replace with init-time Instruments struct per reconciler — OTel SDK already deduplicates same-name Int64Counter calls. 3. Map ReasonDeploymentNotReady / ReasonStatefulSetNotReady to PhaseProgressing instead of PhaseUnknown. Rollout-stall scenarios were previously misrecorded as unknown->ready in the metric. 4. Drop --observability-metrics-enabled and --observability-metrics-prometheus flags. The kill switch is OTEL_SDK_DISABLED env var; Prometheus exporter should always be on when metrics are enabled. 5. Fix misleading comment around OTLP env-var fallback in provider.go. 6. Thread priorPhase as parameter into Reconcile<X>() in the 4 split-reconciler controllers (chronicle/connect/workbench/package-manager) instead of capturing twice from the same in-memory CR. 7. Inline the tally() helper in resource_lister.go; accumulate directly into the count map. Net: ~80 lines removed, no behavioral changes except (3) which now correctly classifies degraded rollouts as progressing. Refs #134
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@claude review this PR again. |
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Seems like Claude auth is broken 😞 I assigned a local agent and it didn't flag new things. Happy to fix new findings at review time. |
Reverts the api/core/v1beta1/*_types.go changes from 9538a26 ("fix(core/api): hardcode GVK in OwnerReferencesForChildren"). The commit message claimed controller-runtime strips TypeMeta from typed Get responses, leaving APIVersion/Kind empty. Verification against the live AKS reference cluster shows PVCs created by the pre-fix operator have valid OwnerReferences with apiVersion=core.posit.team/v1beta1 and the expected Kind — kube-apiserver would have rejected the Create otherwise. The bug claim is overstated. The change may still be valuable as defensive hardening against a future controller-runtime version, but it's out of scope for the observability metrics PR and should land in a separate focused PR with that rationale. Refs #134
…hildren" The reverted commit (d8a2e9f) was based on faulty verification: live cluster PVCs created via kubectl-applied CRs had valid OwnerReferences because kubectl validates and populates TypeMeta client-side. But CRs created via the typed Go client (e.g., in TestWorkbenchReconciler_ErrorRecordsTransition) have zero-valued TypeMeta after client.Get, producing invalid OwnerReferences with empty apiVersion/kind on child PostgresDatabase resources. The original 9538a26 fix is therefore correct and necessary. Refs #134 This reverts commit d8a2e9f4a3c5c61df9d31ba0d9b32e1ffa12c6d3.
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Summary
Phase 1 of OTel-native observability for the team-operator: four
team_operator_*Prometheus metrics on/metrics, optional OTLP gRPC push, Helm/Kustomize wiring. Closes #7. Phases 2 (events: #132) and 3 (traces: #133) come later. Design lives in the comment thread on #7.What's emitted
team_operator_resource_countcontroller, namespace, phaseteam_operator_status_transition_totalcontroller, namespace, from_phase, to_phaseteam_operator_dependency_check_totalcontroller, namespace, dependency, resultteam_operator_reconcile_requeue_totalcontroller, namespace, reasonNo per-CR-name labels.
controller_runtime_*built-ins continue unchanged on the same/metricsendpoint.Configuration
Three new flags with OTel env-var fallbacks:
--observability-metrics-otlp-endpoint(default empty — OTLP push disabled)--observability-metrics-export-interval(default30s)--observability-cluster-name(default empty —k8s.cluster.nameresource attribute)OTEL_SDK_DISABLED=truedisables the SDK entirely. Full reference:docs/observability.md.Upgrade notes
The Helm chart's manager
env:block now renders unconditionally to injectPOD_NAME(used for theservice.instance.idresource attribute). Existing deployments will see a one-time diff on upgrade.Testing