T1.6: Comprehensive Integration Tests for Concurrency
- Add tests/concurrency_integration_test.go
- Test concurrent workflows on shared resources
- Test board validation concurrency
- Test state tracking under concurrent access
- Test snapshot creation and restoration concurrency
- Test pause/resume under load
- Test data consistency with concurrent access
- Test network flakiness simulation
- Test cross-workflow isolation
- Benchmark concurrent snapshot and state operations
- 15 integration tests, all passing
T1.7: Immutable Audit Logging
- Add internal/audit package for decision tracking
- Implement AuditLogger with append-only JSONL logs
- Log planner decisions with reasoning
- Log judge verdicts with reasoning
- Log implementer changes with file lists
- Query by task ID (queryable by task)
- Query by workflow ID
- Query by actor (planner/judge/implementer)
- Query by timestamp range
- Full audit trail retrieval
- Event counting and statistics
- 14 audit tests, all passing
Audit Features:
- Immutable append-only JSONL logs
- Event ID generation
- Timestamp tracking (exact recovery point)
- Full reasoning and context preservation
- Metadata storage for extensibility
- Thread-safe concurrent logging
- Fast queries by task/workflow/actor/time
Test Coverage:
- 15 concurrency integration tests (workflows, board, state, snapshots)
- 14 audit logging tests (decisions, verdicts, queries, immutability)
- 29 total T1.6+T1.7 tests, all passing
- Concurrent access patterns verified
- Data consistency under load verified
- Query functionality comprehensive
T1 Milestone: 8/8 tasks COMPLETE (100%)
- Add internal/pause package for pause/resume orchestration
- Implement WorkflowSnapshot for complete state serialization
- Implement SnapshotManager for snapshot storage and recovery
- Implement PauseHandler for pause/resume signal handling
- Implement PauseSignal and ResumeSignal types
- Implement PauseState for tracking pause status
Snapshot Features:
- Capture complete workflow state (tasks, metrics, config)
- Persist to JSON files for recovery after pod restart
- Track paused_at and resumed_at timestamps
- Support snapshot cleanup and batch removal
- Load/save from disk with persistence layer
Pause Handling:
- Accept pause signals with reason and grace period
- Save current state before pausing
- Block workflow execution during pause
- Support multiple concurrent paused workflows
- Channel-based signal reception (Temporal-compatible)
Resume Handling:
- Accept resume signals with reason
- Restore workflow state from snapshots
- Continue execution from exact pause point
- Update timestamps on resumption
- Enable recovery after pod restarts
Signal Management:
- Non-blocking signal reception with timeout
- WaitForPauseOrResume() for blocking operations
- ConfigurableWait duration
- Error handling for invalid transitions
Analytics:
- GetPauseStats() for pause/resume metrics
- GetSnapshotStats() for snapshot inventory
- Timestamp tracking (paused, resumed)
- Multi-workflow state aggregation
Test Coverage:
- 16 snapshot tests (creation, persistence, cleanup)
- 18 handler tests (signals, state, snapshots)
- 34 total pause/resume tests, all passing
- Edge cases: concurrent workflows, nil signals, timeouts
- State transition verification
Key Design:
- Separate Snapshot Manager (storage) and Pause Handler (orchestration)
- JSON persistence for debuggability
- Thread-safe with RWMutex
- Compatible with Temporal signal patterns
- Non-destructive pause (snapshot before blocking)
Closes T1.5
- Add internal/logging package with zap-based structured JSON logging
- Support development (colored) and production (JSON) modes via ENVIRONMENT env var
- Add logging helpers: Info(), Error(), Warn(), Debug(), Fatal()
- Add field helpers: String(), Int(), Int64(), Err()
- Add internal/metrics package with 16 comprehensive Prometheus metrics
- Track workflows: starts, completions, duration by type/status
- Track activities: starts, completions, duration, retries by type
- Track LLM calls: total calls and latency by model
- Track git operations: total and duration by operation type
- Track judge decisions: decisions by type
- Track Temporal errors: connection errors by type
- Track cache efficiency: hits and misses by cache type
- Track tasks in progress: gauge metric by task type
- Metrics exported on /metrics endpoint (Prometheus text format)
- Integrate structured logging in cmd/worker and cmd/starter
- Replace all log.Printf/log.Fatalf with structured logging
- Add /metrics endpoint to health check server
- 8/8 logging tests passing, 13/13 metrics tests passing
- All verification criteria met
Dependencies added:
- go.uber.org/zap v1.28.0 (structured logging)
- github.com/prometheus/client_golang v1.24.1 (metrics export)
Closes T1.2
- Add internal/health package with health checker
- Implement three endpoints: /health, /health/live, /health/ready
- /health returns full JSON report with component status, latency, timestamp
- /health/live for K8s liveness probe (service running)
- /health/ready for K8s readiness probe (ready to accept traffic)
- Temporal connectivity check via GetWorkflow call with timeout
- Health check caching (30s interval) to prevent excessive checks
- Graceful shutdown: health server stops on SIGINT/SIGTERM
- Add --health flag to starter command to run health check
- Worker runs health server on port 8081 alongside task queue worker
- 10/10 unit tests passing
- All verification criteria met
Closes T1.8
Test