Service Initialization

This guide explains how to properly initialize Handit.AI in your application.

Node.js Initialization

In Node.js applications, initialize Handit.AI in your entry file (e.g., index.js, app.js, or server.js):

// index.js or app.js
const { config } = require('@handit.ai/node');

// Initialize at application startup
config({ 
  apiKey: process.env.HANDIT_API_KEY 
});

// Rest of your application code
const express = require('express');
const app = express();
// ...

Python Initialization

In Python applications, create a dedicated service file (e.g., handit_service.py) and import it where needed:

# handit_service.py
from handit import HanditTracker

# Initialize the tracker
tracker = HanditTracker(api_key=os.getenv("HANDIT_API_KEY"))

# Export the tracker instance
__all__ = ['tracker']

# other_service.py
from handit_service import tracker

# Use the tracker in your code
async def process_data():
    # Your code here
    pass

Best Practices

1. Node.js

   • Initialize in the entry file

   • Use environment variables for configuration

   • Initialize before any other application code

   • Don't reinitialize in other files

2. Python

   • Create a dedicated service file

   • Initialize once and import where needed

   • Use environment variables for configuration

   • Follow the singleton pattern

Common Pitfalls

1. Multiple Initializations

   • Don't initialize Handit.AI multiple times

   • Don't create multiple tracker instances

   • Use a single configuration point

2. Environment Variables

   • Always use environment variables for API keys

   • Don't hardcode sensitive data

   • Use .env files for local development

3. Initialization Order

   • Initialize before using any Handit.AI features

   • Ensure environment variables are loaded

   • Handle initialization errors appropriately

Setup Procedures

Configuration Loading

• Load environment variables

• Parse configuration files

• Validate settings

• Set up defaults

[Image placeholder: Configuration Loading]

Resource Management

• Initialize connections

• Set up pools

• Allocate resources

• Monitor usage

[Image placeholder: Resource Management]

Health Checks

Service Health

• Monitor service status

• Check dependencies

• Verify connections

• Track resource usage

[Image placeholder: Health Monitoring]

Recovery Procedures

• Handle initialization failures

• Implement retry logic

• Manage resource cleanup

• Log initialization events

[Image placeholder: Recovery Flow]

Best Practices

Initialization Order

• Load configurations first

• Initialize core services

• Set up monitoring

• Start processing

Resource Optimization

• Use connection pooling

• Implement lazy loading

• Manage memory efficiently

• Monitor resource usage

[Image placeholder: Resource Optimization]

Examples

Service Initialization Example

class ServiceInitializer {
  async initialize() {
    try {
      // Load configuration
      await this.loadConfig();
      
      // Initialize core services
      await this.initCoreServices();
      
      // Set up monitoring
      await this.setupMonitoring();
      
      // Start processing
      await this.startProcessing();
      
      return true;
    } catch (error) {
      await this.handleInitializationError(error);
      return false;
    }
  }
  
  async loadConfig() {
    // Load and validate configuration
    const config = await loadEnvironmentVariables();
    validateConfig(config);
    return config;
  }
}

Health Check Example

class HealthMonitor {
  async checkHealth() {
    const health = {
      status: 'healthy',
      checks: {
        database: await this.checkDatabase(),
        cache: await this.checkCache(),
        api: await this.checkAPI()
      }
    };
    
    return health;
  }
}

[Image placeholder: Code Examples]