Delete only resources owned by the retired preview generation
A cleanup job matches resource names by prefix and can remove a newer generation sharing the same branch label.
- Focused work estimate
- 5h + prerequisites
- Priority in the scenario
- High
- Engineering practice
- Resource safety · Recovery
Estimated field mix
- Platform engineering50%
- Cloud infrastructure30%
- Security20%
Field percentages are editorial estimates of the ticket's engineering focus. They total 100%; they are not measured time, proficiency scores, or ownership evidence.
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Project context
A fictional team creates preview stacks for pull requests. Orphan databases consume resources and previews sometimes inherit settings intended for another branch.
Setup prerequisites
- Create a local provisioning adapter with synthetic repository events.
- Use isolated disposable resources and no production credentials.
Preceding work
Complete these dependencies, or supply their agreed outputs before taking this ticket.
- AENV-101 · Validate preview requests before allocating resources
- AENV-102 · Create a review-environment resource plan with an explicit quota
- AENV-103 · Keep preview connection material out of build output
- AENV-104 · Make preview creation resumable after a partial provider failure
- AENV-105 · Bind preview updates to the exact requested source revision
- AENV-106 · Initialize preview data from a synthetic schema contract
- AENV-107 · Probe readiness without accidentally validating only process liveness
- AENV-108 · Expire review environments with a grace period and owner visibility
Acceptance criteria
- Match exact environment, generation and ownership tags.
- Refuse deletion for missing or contradictory ownership.
- Make retries converge after partial deletion.
Implementation constraints
- Provider deletion receives exact resource IDs, never wildcard names.
Verification to include
- Retire an old generation while keeping the new one usable.
- Alter an ownership tag and verify cleanup stops before deletion.
Deliverables
- Ownership-checked cleanup and isolation tests
Rollout and recovery
Dry-run deletion plans first; pause cleanup and preserve unresolved resources on ownership conflicts.
Value of the work
For the engineer: Practice resource lifecycle, reconciliation and least-privilege setup.
For the team: Review reliable preview workflows and accountable resource cleanup.
Evidence boundaries
Outcome Evidence: Tests, patches, and runbooks are requested deliverables. They become Outcome Evidence only through a qualified Mission and immutable Evidence IDs.
Ownership Evidence: Independent adaptation must be observed under a declared verification policy and cite immutable Evidence IDs. Completing a planning ticket establishes no Ownership Evidence.