Lucas Berger
123 lines
4.2 KiB
Markdown
123 lines
4.2 KiB
Markdown
---
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phase: 10.1-aggressive-workflow-modularization
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plan: 08
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subsystem: workflows
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tags: [n8n, docker-api, error-handling, status-codes]
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# Dependency graph
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requires:
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- phase: 10.1-01
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provides: "Container Actions sub-workflow (n8n-actions.json)"
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provides:
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- "HTTP status code detection in container action formatters (304, 404, 500+)"
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- "User-friendly messages for already-stopped/started containers"
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- "Clear error messages for not-found and server errors"
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affects: [UAT-gap-closure, Phase-11-updates]
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# Tech tracking
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tech-stack:
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added: []
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patterns: ["HTTP status code handling before message-based fallback", "Docker API 304 = already in desired state"]
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key-files:
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created: []
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modified: ["n8n-actions.json"]
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key-decisions:
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- "Status code checks run before existing message-based checks (fail-fast pattern)"
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- "HTTP 304 treated as success with helpful 'already {state}' message"
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patterns-established:
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- "Docker API status code interpretation: 304=already-in-state, 404=not-found, 500+=server-error, 204=success"
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- "onError:continueRegularOutput allows Format nodes to inspect statusCode field"
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# Metrics
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duration: 1min 34sec
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completed: 2026-02-08
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---
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# Phase 10.1 Plan 08: Container Action Status Code Handling Summary
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**Docker API HTTP status code detection (304, 404, 500+) added to Stop/Start/Restart result formatters, providing clear user feedback for edge cases**
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## Performance
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- **Duration:** 1 min 34 sec
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- **Started:** 2026-02-08T14:53:11Z
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- **Completed:** 2026-02-08T14:54:45Z
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- **Tasks:** 2
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- **Files modified:** 1
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## Accomplishments
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- Added statusCode handling to all three Format Result nodes (Stop, Start, Restart)
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- HTTP 304 now returns success with "already stopped/started" message instead of failure
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- HTTP 404 returns clear "Container not found" error message
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- HTTP 500+ returns descriptive "Server error {action}" message
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- Deployed updated sub-workflow to n8n instance successfully
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## Task Commits
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Each task was committed atomically:
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1. **Task 1: Add statusCode checks to Format Stop/Start/Restart Result nodes** - `684feb1` (feat)
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2. **Task 2: Deploy updated sub-workflow via n8n API** - *(API operation, no file changes)*
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## Files Created/Modified
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- `n8n-actions.json` - Added HTTP status code handling to Format Stop/Start/Restart Result Code nodes
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## Decisions Made
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**Status code checks before message-based fallback:** Implemented statusCode checks first, then fall through to existing message/error field checks. This ensures Docker API HTTP responses are handled explicitly before relying on message parsing.
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**HTTP 304 as success:** Docker API returns 304 when container is already in desired state (e.g., stopping an already-stopped container). Treating this as `success: true` with helpful message instead of error provides better UX.
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**Per-action messaging:** Each formatter uses action-appropriate text:
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- Stop: "already stopped"
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- Start: "already started"
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- Restart: "already started" (Docker restart endpoint returns 304 for running containers)
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## Deviations from Plan
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None - plan executed exactly as written.
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## Issues Encountered
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None - implementation was straightforward.
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## User Setup Required
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None - no external service configuration required.
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## Next Phase Readiness
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UAT gap "Stopping an already-stopped container shows failure message" is now closed. The fix is deployed and ready for UAT verification.
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All gap closure plans (08-09) will be complete after Plan 09 execution.
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## Self-Check: PASSED
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**Created files verification:**
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- SUMMARY.md: Created in this execution
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**Modified files verification:**
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```
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[ -f "/home/luc/Projects/unraid-docker-manager/n8n-actions.json" ] && echo "FOUND: n8n-actions.json" || echo "MISSING: n8n-actions.json"
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FOUND: n8n-actions.json
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```
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**Commits verification:**
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```
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git log --oneline | head -5
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684feb1 feat(10.1-08): add statusCode handling to container action result formatters
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0fc429f docs(10.1): create UAT gap closure plans (08-09)
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a1705e0 test(10.1): diagnose 4 UAT issues with root causes
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e369fe5 test(10.1): complete UAT - 11 passed, 4 issues
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b8ae532 docs(10.1): mark Phase 10.1 complete in roadmap (7/7 plans)
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```
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All commits present. All files exist.
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---
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*Phase: 10.1-aggressive-workflow-modularization*
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*Completed: 2026-02-08*
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