docs(09-02): complete batch execution and progress plan

Tasks completed: 3/3 - Add Loop Over Items for sequential batch execution - Add per-container progress updates and action execution - Add batch summary with failure emphasis SUMMARY: .planning/phases/09-batch-operations/09-02-SUMMARY.md
2026-02-03 21:35:08 -05:00
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+---
+phase: 09-batch-operations
+plan: 02
+subsystem: bot
+tags: [n8n, telegram, batch, loop, progress, docker]
+
+# Dependency graph
+requires:
+  - phase: 09-01
+    provides: Batch command parsing with container matching and Route Batch Action
+provides:
+  - Sequential batch execution with Loop Over Items pattern
+  - Per-container progress updates via Telegram editMessageText
+  - Error isolation (one failure does not abort batch)
+  - Failure-emphasized summary with Back to List navigation
+affects: [09-03, 10-polish]
+
+# Tech tracking
+tech-stack:
+  added: []
+  patterns:
+    - splitInBatches node for sequential execution
+    - Two-phase action execution (lookup then execute)
+    - Progress message editing during long operations
+
+key-files:
+  created: []
+  modified:
+    - n8n-workflow.json
+
+key-decisions:
+  - "Container lookup for callbacks without Id - use filters API"
+  - "Two-phase execution - lookup then action for name-only containers"
+  - "Progress edit every container - batch sizes typically 2-5"
+  - "Warnings shown in detail for <= 3, summary for > 3"
+  - "Is Batch Complete IF node routes to summary vs loop continuation"
+
+patterns-established:
+  - "Loop with isComplete check for summary timing"
+  - "onError: continueRegularOutput for non-aborting execution"
+  - "Result aggregation via passed state (results array, counters)"
+
+# Metrics
+duration: 7min
+completed: 2026-02-04
+---
+
+# Phase 9 Plan 02: Batch Execution and Progress Summary
+
+**Sequential batch execution with Loop Over Items, per-container progress edits, error isolation, and failure-emphasized summaries**
+
+## Performance
+
+- **Duration:** 7 min
+- **Started:** 2026-02-04T02:26:37Z
+- **Completed:** 2026-02-04T02:33:47Z
+- **Tasks:** 3
+- **Files modified:** 1
+
+## Accomplishments
+- Sequential batch execution loop processes containers one at a time
+- Progress message updates in real-time for each container being processed
+- One container failure does not abort the batch - remaining containers continue
+- Final summary emphasizes failures with container names and reasons
+- Back to List button for navigation after batch completion
+
+## Task Commits
+
+Each task was committed atomically:
+
+1. **Task 1: Add Loop Over Items for sequential batch execution** - `62f50cb` (feat)
+2. **Task 2: Add per-container progress updates and action execution** - `fd4c614` (feat)
+3. **Task 3: Add batch summary with failure emphasis** - `b704a6c` (feat)
+
+## Files Created/Modified
+- `n8n-workflow.json` - Added 20 new nodes for batch execution flow
+
+## New Nodes Added (20 total)
+
+### Batch Initialization (4)
+1. Initialize Batch State - Prepares batch data structure
+2. Send Batch Start Message - Initial "Starting batch..." message
+3. Prepare Batch Loop - Formats containers for loop iteration
+4. Batch Loop - splitInBatches node with batch size 1
+
+### Progress and Execution (10)
+5. Build Progress Message - Creates per-container progress text
+6. Edit Progress Message - Updates Telegram message
+7. Route Batch Loop Action - Routes by action type
+8. Build Batch Action Command - Prepares curl command
+9. Execute Batch Container Action - Runs the action
+10. Check Batch Action Result - Handles lookup vs direct result
+11. Needs Action Call - IF node for two-phase execution
+12. Execute Batch Action 2 - Second phase execution
+13. Parse Batch Action 2 - Parses second phase result
+14. Handle Action Result - Aggregates success/failure/warning
+
+### Loop Control and Summary (4)
+15. Prepare Next Iteration - Sets isComplete flag
+16. Is Batch Complete - Routes to summary or loop continuation
+17. Build Batch Summary - Creates failure-emphasized summary
+18. Send Batch Summary - Posts final summary with Back to List button
+
+### Callback Preparation (2)
+19. Prepare Batch Stop Exec - Transforms bstop:confirm callback data
+20. Prepare Batch Exec - Transforms bexec callback data
+
+## Decisions Made
+
+| Decision | Rationale |
+|----------|-----------|
+| Two-phase execution for name-only containers | Callbacks from bstop/bexec have names but no IDs - need lookup first |
+| onError: continueRegularOutput | Ensures one failure doesn't abort entire batch |
+| Is Batch Complete IF node | Clean routing to summary instead of relying on loop second output |
+| Warnings shown in detail for <= 3 | Per context discretion - show details when few, summary when many |
+| Progress edit every container | Typical batch is 2-5 containers, rate limiting not a concern |
+
+## Deviations from Plan
+
+None - plan executed exactly as written.
+
+## Issues Encountered
+None
+
+## User Setup Required
+
+None - no external service configuration required.
+
+## Next Phase Readiness
+
+**Ready for Plan 03:** Batch update workflow integration.
+
+The following are now available for Plan 03:
+- Complete batch execution pipeline for start/stop/restart
+- Route Batch Loop Action output 0 (update) is empty - needs full update flow
+- Pattern established for sequential execution with progress
+- Error isolation and summary patterns ready to reuse
+
+**Note:** Route Batch Loop Action update output needs to connect to the full update sequence (pull, stop, remove, create, start) similar to single-container update flow.
+
+---
+*Phase: 09-batch-operations*
+*Completed: 2026-02-04*