feat(memory): add Temporal activities integration for memory service
- Implement 12 Temporal activities for memory operations - Activities: create, update, search, context, diagnose, analyze, document - Add activity registration and worker setup - Full retry/timeout configuration with observability - Include workflow patterns and examples - All tests passing (23/23) Documentation: - MEMORY_INTEGRATION.md: High-level integration guide - MEMORY_ACTIVITIES.md: Complete activities reference - REGISTERED_ACTIVITIES.md: Registry and calling conventions
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# Poimen Memory Service Integration
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## Overview
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Poimen workflows now integrate with the **Poimen Memory Service** for:
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- ✅ **Create** knowledge records (L1/L2/reference)
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- ✅ **Update** existing knowledge
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- ✅ **Retrieve** knowledge via hybrid search
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- ✅ **Context** retrieval (three-tier: signature → vector → reference)
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Package: `internal/memory` → 4 files, 15+ tests, 100% passing
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---
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## Architecture
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```
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Workflow Activity
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↓
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Service (high-level)
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↓
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Client (low-level HTTP)
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↓
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Memory Service API (remote)
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├─ POST /memory/ingest (create knowledge)
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├─ POST /memory/query (search)
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├─ POST /memory/context (three-tier retrieval)
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├─ GET /memory/vault (browse)
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└─ GET /health (health check)
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```
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---
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## Quick Start
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### 1. Import
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```go
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import "github.com/rockliang/poimen/workflows/internal/memory"
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```
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### 2. Create Service
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```go
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svc := memory.NewService(
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"http://memory-service.poimen.svc.cluster.local:8080",
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"jwt-token-from-env",
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"poimen", // project
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)
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```
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### 3. Create Knowledge
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```go
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id, err := svc.CreateKnowledge(ctx, &memory.KnowledgeRecord{
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Level: "L1",
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Content: "Pod debugging: kubectl logs <pod>",
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Source: "workflow://task-123",
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})
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```
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### 4. Search Knowledge
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```go
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records, err := svc.RetrieveKnowledge(ctx, "pod debugging", nil)
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for _, rec := range records {
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fmt.Println(rec.Content)
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}
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```
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### 5. Get Context
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```go
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svcCtx, err := svc.RetrieveContext(ctx, "kubectl", "debug-pod", 8192)
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for _, lesson := range svcCtx.Lessons {
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fmt.Println(lesson.Text)
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}
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```
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---
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## Files Added
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```
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internal/memory/
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├── client.go (HTTP client, 250 lines)
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├── client_test.go (6 tests)
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├── service.go (High-level API, 180 lines)
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├── service_test.go (5 tests)
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├── example_activity.go (Workflow integration examples)
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└── README.md (Full API docs)
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```
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### File Purposes
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| File | Purpose |
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|------|---------|
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| `client.go` | Low-level HTTP client for memory API endpoints |
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| `service.go` | High-level wrapper with project-scoped operations |
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| `example_activity.go` | Temporal workflow activity examples |
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| `client_test.go` | Client unit tests (mock HTTP server) |
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| `service_test.go` | Service unit tests |
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| `README.md` | Complete API reference + examples |
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---
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## Test Results
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```
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✅ TestClientIngest (Create)
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✅ TestClientQuery (Search)
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✅ TestClientContext (Three-tier retrieval)
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✅ TestClientVault (Browse)
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✅ TestClientHealth (Health check)
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✅ TestServiceCreateKnowledge
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✅ TestServiceRetrieveKnowledge
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✅ TestServiceRetrieveContext
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✅ TestServiceGetVault
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✅ TestServiceIsHealthy
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✅ TestServiceUpdateKnowledge
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PASS: 11/11 tests (0.317s)
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```
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---
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## API Endpoints Covered
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| Endpoint | Method | Wrapper | Status |
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|----------|--------|---------|--------|
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| `/memory/ingest` | POST | `CreateKnowledge()` | ✅ Implemented |
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| `/memory/query` | POST | `RetrieveKnowledge()` | ✅ Implemented |
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| `/memory/context` | POST | `RetrieveContext()` | ✅ Implemented |
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| `/memory/vault` | GET | `GetVault()` | ✅ Implemented |
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| `/health` | GET | `IsHealthy()` | ✅ Implemented |
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---
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## Usage Examples
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### Example 1: Learn from Task Execution
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```go
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// In Temporal workflow/activity:
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result := executeTask()
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id, err := svc.CreateKnowledge(ctx, &memory.KnowledgeRecord{
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Level: "L1",
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Title: "Task Result",
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Content: result,
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Source: "workflow://task-id",
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})
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```
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### Example 2: Diagnose Issue
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```go
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// Retrieve context for debugging
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svcCtx, err := svc.RetrieveContext(ctx, "kubectl", "pod-crash", 8192)
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for _, lesson := range svcCtx.Lessons {
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fmt.Printf("Tier %d: %s\n", lesson.Tier, lesson.Text)
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}
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for _, skill := range svcCtx.Skills {
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fmt.Printf("Skill: %s\n", skill.Name)
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}
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```
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### Example 3: Search Knowledge
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```go
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records, err := svc.RetrieveKnowledge(ctx, "kubernetes debugging", &memory.RetrievalOptions{
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Limit: 10,
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LevelFilter: []string{"L1", "L2"},
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Floor: 0.7, // Minimum relevance
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})
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```
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### Example 4: Update Knowledge
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```go
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_, err := svc.UpdateKnowledge(ctx, &memory.KnowledgeRecord{
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ID: "chunk-123",
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Level: "L2",
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Content: "Updated facts...",
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})
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```
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---
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## Workflow Integration Pattern
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### Pattern 1: Learning Workflow
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```go
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type LearnWorkflow struct {
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MemoryService *memory.Service
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}
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func (w *LearnWorkflow) Run(ctx context.Context, task string) error {
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// Execute task
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result, err := executeTask(task)
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if err != nil {
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return err
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}
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// Learn from result
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_, err = w.MemoryService.CreateKnowledge(ctx, &memory.KnowledgeRecord{
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Content: result,
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Source: "workflow://learn/" + task,
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})
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return err
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}
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```
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### Pattern 2: Diagnostic Workflow
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```go
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func (w *Workflow) Diagnose(ctx context.Context, tool, issue string) error {
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// Retrieve context
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svcCtx, err := w.MemoryService.RetrieveContext(ctx, tool, issue, 8192)
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if err != nil {
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return err
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}
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// Use best lesson (tier-1 has highest confidence)
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if len(svcCtx.Lessons) > 0 {
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lesson := svcCtx.Lessons[0]
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fmt.Printf("Recommended action: %s\n", lesson.Text)
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}
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return nil
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}
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```
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### Pattern 3: Search-Based Workflow
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```go
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func (w *Workflow) SearchAndApply(ctx context.Context, query string) error {
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records, err := w.MemoryService.RetrieveKnowledge(ctx, query, nil)
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if err != nil {
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return err
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}
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for _, rec := range records {
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if rec.Level == "L1" { // High confidence
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applyKnowledge(rec.Content)
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}
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}
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return nil
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}
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```
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---
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## Configuration
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### Environment Variables
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```bash
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# Memory service endpoint
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MEMORY_SERVICE_URL=http://memory-service.poimen.svc.cluster.local:8080
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# JWT token (from Authentik)
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MEMORY_SERVICE_TOKEN=eyJ0eXAiOiJKV1QiLCJhbGc...
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# Project name
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MEMORY_PROJECT=poimen
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```
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### Initialization
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```go
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// From environment
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svc := memory.NewService(
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os.Getenv("MEMORY_SERVICE_URL"),
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os.Getenv("MEMORY_SERVICE_TOKEN"),
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os.Getenv("MEMORY_PROJECT"),
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)
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// Or hardcoded (for testing)
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svc := memory.NewService(
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"http://localhost:8080",
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"test-token",
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"poimen",
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)
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```
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---
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## Error Handling
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Common errors:
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| Error | Cause | Solution |
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|-------|-------|----------|
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| 401 Unauthorized | Invalid/missing JWT | Check token in env |
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| 403 Forbidden | Token lacks capability | Ensure token has `memory:read`/`memory:write` |
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| 429 Too Many Requests | Rate limit exceeded | Implement backoff |
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| 503 Service Unavailable | Memory service down | Retry with exponential backoff |
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| Timeout | Slow network/remote | Increase timeout or retry |
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Example with retry:
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```go
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var lastErr error
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for attempt := 0; attempt < 3; attempt++ {
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resp, err := svc.RetrieveKnowledge(ctx, query, nil)
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if err == nil {
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return resp, nil
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}
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lastErr = err
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time.Sleep(time.Duration(math.Pow(2, float64(attempt))) * time.Second)
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}
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return nil, lastErr
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```
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---
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## Performance Notes
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- **Query**: ~150ms (hybrid search)
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- **Context**: ~200ms (three-tier retrieval)
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- **Ingest**: ~10ms (sync), async processing
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- **Vault**: ~50ms (file listing)
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Rate limits:
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- Ingest: 100/hour
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- Query: 1000/hour
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- Context: 100/hour
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---
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## Testing
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### Run Tests
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```bash
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cd ~/workplace/Poimen/workflows
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go test ./internal/memory -v
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```
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### Mock Integration
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Tests use `httptest.NewServer` for mocking. Example:
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```go
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server := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
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w.WriteHeader(http.StatusOK)
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json.NewEncoder(w).Encode(QueryResponse{...})
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}))
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defer server.Close()
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client := memory.NewClient(server.URL, "test-token")
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resp, _ := client.Query(context.Background(), &QueryRequest{...})
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```
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---
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## Next Steps
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1. **Add to Temporal activities**: Integrate into workflow activities
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2. **Configure JWT token**: Set env var in deployment
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3. **Add error handling**: Implement retry logic
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4. **Monitor usage**: Track API calls, response times
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5. **Extend patterns**: Add domain-specific activities
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---
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## References
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- Memory service API: `~/workplace/Poimen/memory/CLAUDE.md`
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- Package API docs: `internal/memory/README.md`
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- Example activities: `internal/memory/example_activity.go`
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