fix: back up stopped servers and bind quiesce to pod identity by Baylem · Pull Request #766 · GameplanePanel/Gameplane

Baylem · 2026-10-21T15:51:38Z

Backups requesting quiesce now recognize an already-stopped, fully drained server without calling its absent agent. Live attempts bind quiesce and cleanup to the original Pod UID, so a replacement pod cannot receive an older backup's save-off/save-on request. Starting a backup does not change suspend or idle intent.

The source proof and cleanup obligation survive operator restart and Backup deletion. Cleanup waits for copy workers to drain; confirmed original-process exit is reported separately from a successful unquiesce RPC. Disabled agents retain raw-copy behavior. Older agents fail a read-only identity preflight before mutation debt is recorded, so operator and agent should be upgraded together and existing pods allowed to roll before retrying affected copies.

Depends on #760 (included in this branch). Closes #716.

Validation: operator and agent production builds passed. Controller unit/envtest, agent-client/quiesce, and E2E test sources compiled without execution. Added CI coverage for idle/suspended copies, queued copies, stale reads, writer detection, process replacement and cleanup; the E2E drill creates and restores two backups while the game pod remains absent. Tests run only in CI under repository policy. Pod UID binding does not establish application-wide consistency or detect in-place game-container restarts.

Summary by CodeRabbit

New Features
- Backups can now copy data from already-stopped game servers without starting them, while preserving the server’s suspended state. These backups remain restorable.
- Backup preparation now verifies the source game process before and during copying, helping prevent backups from completing against a replaced or changed source.
Bug Fixes
- Quiesce and resume requests are bound to the original game process. Cleanup waits until that process is confirmed saved or has exited, avoiding accidental requests to a replacement process.
- The operator and agent must be upgraded together for pod-bound quiesce operations; older agents are rejected during identity checks.

Issue coordination: this is the stopped-source follow-up to #716 and depends on the exclusive ownership contract requested in #718, implemented by #760.

Signed-off-by: Baylem <zelathis@gmail.com>

coderabbitai · 2026-10-21T15:56:14Z

Walkthrough

The operator now records and validates backup source identity. Stopped and drained sources can proceed without agent quiesce calls. Live-source quiesce and cleanup use Pod-UID-bound endpoints. Tests and specifications cover stopped backups, source replacement, and cleanup.

Changes

Backup Preparation and Quiesce Identity

Layer / File(s)	Summary
Pod-bound agent identity and quiesce `agent/cmd/main.go`, `agent/internal/target/target.go`, `agent/internal/quiesce/quiesce_test.go`, `agent/specs.md`, `operator/internal/agent/client.go`, `operator/internal/agent/client_test.go`, `operator/internal/controller/gameserver_controller.go`	The agent exposes a guarded Pod identity endpoint and Pod-bound quiesce routes. The operator checks the Pod UID and sends quiesce requests to that UID. The agent container receives its Pod UID through `GAMEPLANE_POD_UID`.
Backup source preparation and stopped-source proof `operator/internal/controller/backup_preparation.go`, `operator/internal/controller/backup_guard.go`, `operator/internal/controller/backup_envtest_test.go`, `operator/internal/controller/backup_stopped_test.go`, `test/e2e/backup_stopped_e2e_test.go`, `test/e2e/buckets.sh`, `operator/specs.md`	Preparation records target, workload, and source identity. Stopped-source copies require workload and drain checks. Controller and end-to-end tests cover stopped backups, including restored data and preserved suspend state.
Quiesce execution, cleanup, and lifecycle recovery `operator/internal/controller/backup_controller.go`, `operator/internal/controller/backup_guard.go`, `operator/internal/controller/lifecycle_operation.go`, `operator/internal/controller/backup_guard_test.go`, `operator/internal/controller/helpers_envtest_test.go`, `operator/internal/controller/backup_stopped_test.go`, `operator/hack/condition-ids/main.go`, `i18n/locales/en/app.json`, `operator/specs.md`	Live-source quiesce requires Pod identity checks and uses the prepared Pod UID. Cleanup checks whether the original process remains before sending unquiesce, and lifecycle recovery retains the recorded Pod identity. Tests cover cleanup failures and Pod replacement.

Priority: Normal

Estimated code review effort: 4 (Complex) | ~50 minutes

Change: Bug fix · Severity of issue fixed: Medium

Possibly related issues

Issue 731: The Pod-UID-bound cleanup and source-replacement checks address the original-Pod identity boundary. Staged template rollout is not included.

Possibly related PRs

GameplanePanel/Gameplane#760: This PR extends the shared lifecycle ownership, workload fence, and cleanup contracts added there.

Suggested labels: type: feature, type: test, type: docs

Merge Risk: Moderate · up to f41bb

After an upgrade, backup cleanup could resume a replacement game process instead of the original one. Make legacy recovery wait for proof that the original process is gone before merging.

Pre-merge checks: 5

Check name	Status	Explanation
Description Check		Check skipped - CodeRabbit’s high-level summary is enabled.
Title check		The title "fix: back up stopped servers and bind quiesce to pod identity" matches the main changes. The diff adds a stopped-source backup path that skips agent calls when the StatefulSet is drained. I…
Linked Issues check		Issue `#716` requirements apply. The PR adds stopped-source preparation with zero-replica and drain proof, records source and workload identity, skips agent RPCs for an `already-stopped` source, and pre…
Out of Scope Changes check		The reviewed changes support issue `#716` or its included lifecycle-identity work. Agent identity routes, operator identity handling, cleanup conditions, specifications, localization, and controller, ag…
Docstring Coverage		Docstring coverage is inconclusive: files from earlier reviews still need to be rechecked within the check's analysis limits. Not blocking.

Full details: Title check

Explanation

The title "fix: back up stopped servers and bind quiesce to pod identity" matches the main changes. The diff adds a stopped-source backup path that skips agent calls when the StatefulSet is drained. It also binds quiesce and unquiesce to the original Pod UID through new pod-bound agent client methods, a GAMEPLANE_POD_UID injection, and a /v1/pods/{uid} route guard. The title is short, specific, and in conventional commit form.

Full details: Linked Issues check

Explanation

Issue #716 requirements apply. The PR adds stopped-source preparation with zero-replica and drain proof, records source and workload identity, skips agent RPCs for an already-stopped source, and preserves suspend or idle intent. Live copies use pod-bound identity checks and keep protection when the agent is unreachable. Cleanup waits for worker drain and distinguishes original-process exit from successful unquiesce. The added controller, agent, and E2E tests cover stopped copies, cleanup, replacement, stale identity, disabled agents, and serialization. These changes address the required cleanup, retry, and finalizer behavior.

Full details: Out of Scope Changes check

Explanation

The reviewed changes support issue #716 or its included lifecycle-identity work. Agent identity routes, operator identity handling, cleanup conditions, specifications, localization, and controller, agent, and E2E tests implement or document the backup and quiesce requirements. The previously identified unrelated files do not have a current diff against the merge base.

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Signed-off-by: Baylem <zelathis@gmail.com>

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Actionable comments posted: 2

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Inline comments:
Review comments at @operator/internal/controller/gameserver_idle.go:
- Line 363: Update Reconcile to detect optimistic-lock conflicts returned by
reconcileIdle and desiredReplicas before logging, and return a requeue result
without an error for conflicts. Preserve the existing logging and error return
behavior for all other errors.

Review comments at @operator/internal/controller/gameserver_wipe_guard.go:
- Around line 168-172: Update ensureWipeGuard so claiming an existing guard does
not report a change that blocks workload reconciliation; still propagate claim
errors. In reconcileWipe, check for pending lifecycle recovery before creating a
wipe Job and defer the wipe until recovery completes, allowing desiredReplicas
and reconcileStatefulSet to scale the workload down. Add a test verifying a full
Reconcile scales down before starting a wipe when recovery is pending.

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ℹ️ Review info

⚙️ Run configuration

Source mode: Auto
Repository: GameplanePanel/Gameplane
Branch: master
File: .coderabbit.yaml
Commit: df1e371
Layers: Repository YAML
Review profile: CHILL
Plan: Advanced
Run ID: 235577a3-c71a-4c4f-9b6b-7f285db21985

📥 Commits

Reviewing files that changed from the base of the PR and between df1e371 and ff4d4fc.

📒 Files selected for processing: 46

.github/workflows/ci.yaml
agent/cmd/main.go
agent/internal/quiesce/quiesce_test.go
agent/internal/rcon/nuclearoption_test.go
agent/internal/target/target.go
agent/specs.md
api/internal/handlers/resources_annotations_test.go
docs/operator-operations.md
i18n/locales/en/app.json
operator/api/v1alpha1/backup_types.go
operator/cmd/main.go
operator/hack/condition-ids/main.go
operator/internal/agent/client.go
operator/internal/agent/client_test.go
operator/internal/controller/backup_controller.go
operator/internal/controller/backup_envtest_test.go
operator/internal/controller/backup_forget_envtest_test.go
operator/internal/controller/backup_forget_test.go
operator/internal/controller/backup_guard.go
operator/internal/controller/backup_guard_test.go
operator/internal/controller/backup_preparation.go
operator/internal/controller/backup_stopped_test.go
operator/internal/controller/backup_volumesnapshot.go
operator/internal/controller/gameserver_controller.go
operator/internal/controller/gameserver_idle.go
operator/internal/controller/gameserver_restart.go
operator/internal/controller/gameserver_wipe.go
operator/internal/controller/gameserver_wipe_guard.go
operator/internal/controller/helpers.go
operator/internal/controller/helpers_envtest_test.go
operator/internal/controller/helpers_extra_test.go
operator/internal/controller/lifecycle_operation.go
operator/internal/controller/lifecycle_operation_envtest_test.go
operator/internal/controller/lifecycle_operation_test.go
operator/internal/controller/networkcapture_envtest_test.go
operator/internal/controller/restore_controller.go
operator/internal/controller/restore_lifecycle.go
operator/internal/controller/restore_startup_cleanup_test.go
operator/internal/controller/restore_volumesnapshot.go
operator/internal/controller/restore_volumesnapshot_dispatch_test.go
operator/internal/controller/restore_volumesnapshot_requeue_test.go
operator/specs.md
test/e2e/api_events_roles_scope_e2e_test.go
test/e2e/backup_stopped_e2e_test.go
test/e2e/buckets.sh
web/src/routes/CreateServer.tsx

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🧰 Additional context used

📚 Code guidelines: 2

CLAUDE.md — configured
.specify/memory/constitution.md — configured

📓 Path-based instructions: 16

CRITICAL: After editing CRD Go types in this file, the SAME commit MUST include: operator/api/v1alpha1/zz_generated.deepcopy.go (regenerated) operator/config/crd/*.yaml (regenerated) operator/config/rbac/*.yaml (regenerated) charts/gameplan...