Resume route-note upload after application termination
Killing the process mid-sync leaves operations marked Sending forever. Add a recoverable lease state.
- Focused work estimate
- 4h + prerequisites
- Priority in the scenario
- High
- Engineering practice
- Recovery · Leases
Estimated field mix
- Mobile50%
- Distributed systems30%
- Site reliability20%
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
Fictional maintenance coordinator Elm dispatches non-safety-critical inspection visits. Implement a mobile application in an emulator with local API stubs; physical devices and credentials are unnecessary.
Setup prerequisites
- Create synthetic visits and a local sync adapter.
- Provide controllable connectivity and process-restart simulation.
Preceding work
Complete these dependencies, or supply their agreed outputs before taking this ticket.
Acceptance criteria
- Expired sends return to retryable
- Active leases avoid duplicate work
- Attempt count is bounded
Implementation constraints
- Use an injected monotonic lease clock.
Verification to include
- Restart after expired lease
- Restart before lease expiry
Deliverables
- Lease recovery and crash schedule
Rollout and recovery
Pause runner and retain durable queue.
Value of the work
For the engineer: Practice durable mobile state and explicit sync conflicts.
For the team: Inspect how an engineer protects field work during disconnection.
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.