CODE_CONTEXT_GUIDE.md

Adding Code Context to n8n Workflow

Why Add Code Context?

With code context, the AI can:

• ✅ Identify exact code locations causing issues
• ✅ Reference specific methods and classes
• ✅ Suggest precise code fixes
• ✅ Detect problematic code patterns
• ✅ Review configuration issues

Implementation

Add "Load Code Context" Node

Insert between "Parse Alert Details" and "Route by Severity":

const fs = require('fs');
const path = require('path');

const errorType = $input.item.json.errorType;
const basePath = '/Users/sunil.kunda/ApplicationCode/POC/hackathon-2025/sample-app';

let files = [];

// Map error types to relevant files
if (errorType.includes('Database')) {
  files = [
    'src/main/java/com/example/orderservice/service/OrderService.java',
    'src/main/java/com/example/orderservice/repository/OrderRepository.java',
    'src/main/resources/application.yml'
  ];
} else if (errorType.includes('Payment')) {
  files = [
    'src/main/java/com/example/orderservice/service/PaymentService.java',
    'src/main/java/com/example/orderservice/controller/PaymentController.java'
  ];
}

let codeContext = '**Relevant Code:**\n\n';

for (const file of files) {
  try {
    const filePath = path.join(basePath, file);
    if (fs.existsSync(filePath)) {
      const content = fs.readFileSync(filePath, 'utf8');
      const lines = content.split('\n').slice(0, 80); // First 80 lines
      codeContext += `### ${path.basename(file)}\n\`\`\`java\n${lines.join('\n')}\n\`\`\`\n\n`;
    }
  } catch (error) {
    console.log(`Error reading ${file}`);
  }
}

return {
  json: {
    ...($input.item.json),
    codeContext: codeContext
  }
};

Update AI Prompt

Add code context to the prompt:

{{ $json.originalText }}

**Context:**
- Service: {{ $json.service }}
- Severity: {{ $json.severity }}

{{ $json.codeContext }}

Based on the alert AND the code above, provide:
1. Root cause with specific code references
2. Exact code fixes needed
3. Configuration changes required

Example Output

Without Code:

Root Cause: Database timeout
Fix: Increase connection pool size

With Code:

Root Cause: OrderService.java line 89 - simulateProductionFailures() 
sleeps for 35s, exceeding 30s timeout

Fix: Remove simulation code:
// DELETE lines 89-95 in OrderService.java

Config: Increase pool size in application.yml:
maximum-pool-size: 20  # was 10

Token Cost

• Without code: ~500 tokens ($0.0005)
• With code: ~3000 tokens ($0.003)

Worth it for precise analysis!

Files to Include by Error Type

Error	Files
Database	OrderService.java, OrderRepository.java, application.yml
Payment	PaymentService.java, PaymentController.java
Inventory	InventoryService.java, OrderService.java
Memory	MetricsService.java, application.yml