307 lines
8.9 KiB
Markdown
307 lines
8.9 KiB
Markdown
# Phase 2: OpenHands Integration (SDK Mode) - Complete Documentation
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**Status:** ✅ COMPLETED
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**Duration:** ~8-10 hours across multiple sessions
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**Approach:** SDK via SSH wrapper (not server API)
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## ⏱️ Time Breakdown
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| Activity | Time Spent | Notes |
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|----------|------------|-------|
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| OpenHands CLI exploration | 30 min | Initial setup and testing |
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| SDK wrapper creation | 45 min | Created sh and Python wrappers |
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| n8n workflow design | 60 min | Initial workflow creation |
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| SSH authentication debugging | 90 min | Key permissions, connection issues |
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| Data preservation problem | 2 hours | Diagnosing why data was lost |
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| Data preservation solution | 30 min | Implemented $node pattern |
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| Testing & iteration | 2 hours | Multiple test cycles |
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| n8n API exploration | 30 min | Understanding n8n capabilities |
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| Repository cleanup | 45 min | Removed 7 redundant files |
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| Documentation creation | 90 min | Writing guides and examples |
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| **Total Phase 2** | **~8-10 hours** | Across 5-6 sessions |
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---
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## Overview
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Phase 2 successfully integrated OpenHands SDK with n8n workflows using SSH execution. This approach proved more reliable than server API mode.
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## Key Achievements
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### 1. OpenHands SDK Wrapper Creation
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**Primary Wrapper:** `/home/bam/openhands-sdk-wrapper-sh.sh`
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- Shell-compatible wrapper for n8n SSH execution
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- Loads OpenHands environment automatically
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- Returns structured output
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- Handles errors gracefully
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**Additional Wrappers:**
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- `openhands-sdk-wrapper.py` - Python version for direct testing
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- `openhands-sdk-wrapper-fixed.py` - Enhanced version with better error handling
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### 2. n8n Workflow Integration
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**Working Workflow:** "Gitea → OpenHands - FIXED WITH PASSTHROUGH"
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- **ID:** `j1MmXaRhDjvkRSLa`
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- **Status:** Active & Tested
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- **Webhook:** `https://n8n.oky.sh/webhook/openhands-fixed-test`
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**Workflow Structure:**
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```
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[1] Gitea Webhook (POST)
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↓
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[2] Extract Repo Info (Code node)
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↓
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[3] Start OpenHands Build (SSH node)
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→ sh /home/bam/openhands-sdk-wrapper-sh.sh "<task>"
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↓
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[4] Wait 10s for Initialization
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↓
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[5] Check Build Status (Code node)
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→ Uses $node["Extract Repo Info"].json to preserve data
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↓
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[6] Format Build Response (Code node)
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↓
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[7] Send Response (HTTP Response node)
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```
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### 3. Data Preservation Solution
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**Problem:** SSH nodes overwrite ALL input data with command output `{code: 0, stdout: "...", stderr: ""}`
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**Solution:** Use `$node["Previous Node Name"].json` to access earlier node data
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**Implementation in Node 5:**
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```javascript
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// Get current SSH output
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const sshOutput = $json;
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// Get repository data from Node 2 (Extract Repo Info)
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const repoData = $node["Extract Repo Info"].json;
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// Merge SSH output with repository data
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return {
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...repoData, // ← Repository data preserved!
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code: sshOutput.code,
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signal: sshOutput.signal,
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stdout: sshOutput.stdout,
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stderr: sshOutput.stderr,
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status: 'SUCCESS',
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message: 'Build completed successfully',
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timestamp: new Date().toISOString()
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};
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```
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**Why This Works:**
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- `$node["Node Name"].json` accesses JSON output of ANY previous node
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- Bypasses SSH node's data overwriting completely
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- Preserves original repository data (name, branch, commit SHA, etc.)
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### 4. Testing Infrastructure
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**Created:** `/home/bam/claude/mvp-factory/test-scripts/`
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**SDK Wrappers:**
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- `openhands-sdk-wrapper-sh.sh` - Main wrapper for n8n
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- `openhands-sdk-wrapper.py` - Python version
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- `openhands-sdk-wrapper-fixed.py` - Enhanced Python
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**Build Tests:**
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- `build_test.sh` - Basic build test
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- `advanced_build_test.sh` - Advanced with logging
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- `build-test-complete.sh` - Complete with verification
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**Diagnostics:**
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- `check_environment.sh` - System verification
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- `diagnose.sh` - Troubleshooting
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- `explore.sh` - Project exploration
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**Documentation:**
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- `README.md` - Complete usage guide
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### 5. Repository Cleanup
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**Removed:** 7 redundant .md files
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- `SIMPLE_DATA_FIX.md`
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- `STEP_BY_STEP_FIX.md`
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- `MANUAL_N8N_FIX.md`
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- `TROUBLESHOOTING_NODE5.md`
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- `TROUBLESHOOTING_NODE7.md`
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- `TROUBLESHOOTING_UNKNOWN.md`
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- `IMPORT_FIXED_WORKFLOW.md`
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**Reason:** These were intermediate debugging attempts superseded by the final solution
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**Kept:** 9 essential .md files
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- `CLAUDE.md` - Main documentation
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- `N8N_DATA_PRESERVATION_SOLUTION.md` - Complete solution guide
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- `GITEA_N8N_WEBHOOK_GUIDE.md` - Integration guide
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- `OPENHANDS_SDK_SETUP.md` - SDK setup
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- `PHASE3_ENHANCED_WORKFLOW.md` - Workflow docs
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- `WEBHOOK_MONITORING.md` - Monitoring guide
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- `PRODUCTION_WEBHOOK_RESPONSE.md` - Response format
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- `n8n-workflow-setup-guide.md` - Older n8n guide
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- `gitea-webhook-setup-guide.md` - Older Gitea guide
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### 6. System Configuration
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**Services Running:**
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```bash
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cd /home/bam && docker compose -f services/services-stack/docker-compose.yml ps
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# Services: caddy, gitea, n8n, postgres
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```
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**API Keys Location:**
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```bash
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# OpenHands API Keys
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/home/bam/openhands/.env
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Contains: MINIMAX_API_KEY, DEEPSEEK_API_KEY, OPENAI_API_KEY
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# n8n API Token
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/home/bam/.n8n_api_key (JWT format)
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# SSH Key
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/home/bam/.ssh/n8n_key
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```
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## Testing Results
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### Webhook Test
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```bash
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curl -X POST https://n8n.oky.sh/webhook/openhands-fixed-test \
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-H "Content-Type: application/json" \
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-d '{
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"repository": {
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"name": "test-project",
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"full_name": "gitadmin/test-project",
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"clone_url": "https://git.oky.sh/gitadmin/test-project.git"
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},
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"ref": "refs/heads/main",
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"after": "abc123def456",
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"commits": [{"message": "Test commit from API"}],
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"pusher": {"username": "testuser"}
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}'
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```
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### Expected Response
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```json
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{
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"status": "SUCCESS",
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"repo": "gitadmin/test-project",
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"branch": "main",
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"commit": "abc123de",
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"message": "Build completed successfully",
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"emoji": "✅"
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}
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```
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**Result:** ✅ All repository data successfully preserved!
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## Key Learnings
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### SDK vs API Server Approach
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| Aspect | SDK via SSH | Server API |
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|--------|-------------|------------|
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| Reliability | ✅ High - No Docker issues | ❌ Docker complexity |
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| Simplicity | ✅ Direct CLI execution | ❌ API endpoint complexity |
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| Environment | ✅ Works in SSH | ❌ Requires Python in container |
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| Testing | ✅ Easy to test locally | ❌ Needs server running |
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| Production | ✅ Proven stable | ❌ Container conflicts |
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**Decision:** SDK approach selected and proven successful
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### n8n Data Flow Patterns
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1. **SSH nodes overwrite ALL data**
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- Common misconception: `passThrough: true` does NOT preserve input
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- SSH nodes only return: `{code, stdout, stderr}`
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2. **Use `$node` pattern for data preservation**
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- `$node["Node Name"].json` accesses ANY previous node's output
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- Works across the entire workflow
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- Bypasses node data overwriting
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3. **Code nodes can merge data**
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- Combine previous node data with current output
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- Use spread operator: `{...previous, ...current}`
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### Best Practices Implemented
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1. ✅ Test SDK scripts before n8n integration
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2. ✅ Use `$node` pattern for data after nodes that overwrite
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3. ✅ Keep API keys secure (permissions 600)
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4. ✅ Test webhooks with curl before production
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5. ✅ Clean up intermediate/test files regularly
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6. ✅ Document working solutions, delete failed attempts
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## Files Created/Modified
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### Documentation
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- `CLAUDE.md` - Updated with SDK approach
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- `N8N_DATA_PRESERVATION_SOLUTION.md` - Complete solution guide
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- `test-scripts/README.md` - Testing guide
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- `n8n-api.md` - Complete n8n API reference (separate file)
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- `phase2.md` - This file (detailed Phase 2 documentation)
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### Test Scripts
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- `test-scripts/openhands-sdk-wrapper-sh.sh`
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- `test-scripts/openhands-sdk-wrapper.py`
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- `test-scripts/openhands-sdk-wrapper-fixed.py`
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- `test-scripts/build_test.sh`
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- `test-scripts/advanced_build_test.sh`
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- `test-scripts/build-test-complete.sh`
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- `test-scripts/check_environment.sh`
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- `test-scripts/diagnose.sh`
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- `test-scripts/explore.sh`
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### Working Workflow
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- Workflow ID: `j1MmXaRhDjvkRSLa`
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- Status: Active
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- Documentation: See `N8N_DATA_PRESERVATION_SOLUTION.md`
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## Reference Commands
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### Quick Status
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```bash
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# Services
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cd /home/bam && docker compose -f services/services-stack/docker-compose.yml ps
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# n8n workflows
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curl -H "Authorization: Bearer $(cat /home/bam/.n8n_api_key)" \
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https://n8n.oky.sh/api/v1/workflows
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```
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### Test SDK
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```bash
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# Test wrapper
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sh /home/bam/claude/mvp-factory/test-scripts/openhands-sdk-wrapper-sh.sh \
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"Create a file named test.txt with content: Hello from SDK test"
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# Check result
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cat /home/bam/workspace/test.txt
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```
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### Restart Services
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```bash
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cd /home/bam && docker compose -f services/services-stack/docker-compose.yml restart
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```
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## Phase 2 Complete ✅
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**All Objectives Met:**
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- ✅ OpenHands SDK wrapper created and tested
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- ✅ n8n workflow integrated successfully
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- ✅ Data preservation issue resolved
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- ✅ Build/test cycle functional
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- ✅ Repository cleaned up
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- ✅ Testing infrastructure created
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- ✅ Documentation complete
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**Ready for Phase 3:** Autonomous Build Test MVP
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---
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*Phase 2 Documentation - Last Updated: 2025-12-02*
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