How to Handle Errors and Exceptions in Shopify REST Admin API

1. Introduction
   • Importance of robust error handling in API integration.
   • Overview of error handling in the Shopify REST Admin API.
2. Understanding Shopify API Errors
   • Types of errors you might encounter (client errors, server errors, etc.).
   • Common error codes and what they mean.
3. Best Practices for Error Handling
   • General best practices in handling API errors.
   • Specific tips for handling Shopify API errors.
4. Implementing Error Handling in Code
   • How to structure error handling in your API requests.
   • Examples of handling different types of errors.
5. Logging and Monitoring Errors
   • Techniques for logging errors effectively.
   • Tools and services for monitoring API health and error rates.
6. Retrying Failed Requests
   • Strategies for implementing retry logic.
   • How to use exponential backoff and rate limit considerations.
7. Handling Rate Limit Errors
   • Understanding Shopify’s rate limit policies.
   • Best practices for managing rate limits and avoiding rate limit errors.
8. User Feedback and Error Communication
   • How to communicate errors to users effectively.
   • Implementing user-friendly error messages.
9. Testing Error Handling
   • How to test your error handling strategies.
   • Tools and frameworks for automated testing.
10. Advanced Error Handling Techniques
    • Handling transient and persistent errors differently.
    • Using middleware for error handling in larger applications.
11. Case Studies
    • Examples from real-world applications on handling API errors.
    • Lessons learned and insights gained.
12. Conclusion
    • Recap of the importance of error handling.
    • Encouraging best practices and continuous learning.

const axios = require('axios');

const fetchProduct = async (productId) => {
  const url = `https://your-shop-name.myshopify.com/admin/api/2022-04/products/${productId}.json`;

  try {
    const response = await axios.get(url, {
      headers: {
        'X-Shopify-Access-Token': 'your-access-token',
      }
    });
    console.log('Product Details:', response.data);
  } catch (error) {
    if (error.response) {
      // Handling known API errors
      console.error('API Error:', error.response.status, error.response.data);
      handleSpecificError(error.response.status, error.response.data);
    } else if (error.request) {
      // The request was made but no response was received
      console.error('No response received:', error.request);
    } else {
      // Something happened in setting up the request that triggered an Error
      console.error('Error:', error.message);
    }
  }
};

const handleSpecificError = (status, data) => {
  switch(status) {
    case 404:
      console.error('Product not found:', data);
      break;
    case 429:
      console.error('Rate limit exceeded:', data);
      break;
    default:
      console.error('Unhandled error:', status, data);
  }
};

fetchProduct(123456); // Replace with actual product ID