Step by Step Guide to Building a Salesforce Commerce Cloud API Integration in Python

Introduction

Hey there, fellow developer! Ready to dive into the world of Salesforce Commerce Cloud API integration? You're in for a treat. This guide will walk you through creating a robust Python integration with Salesforce Commerce Cloud API. We'll cover everything from authentication to handling core endpoints, all while keeping things snappy and to the point. Let's get cracking!

Prerequisites

Before we jump in, make sure you've got:

• A Python environment (3.7+ recommended)
• Essential libraries: requests, json
• Salesforce Commerce Cloud account with API access

Got all that? Great! Let's move on.

Authentication

First things first, we need to get you authenticated:

1. Grab your API credentials from your Salesforce Commerce Cloud account.
2. Implement the OAuth 2.0 flow. Here's a quick snippet to get you started:

import requests

def get_access_token(client_id, client_secret):
    url = "https://account.demandware.com/dw/oauth2/access_token"
    data = {
        "grant_type": "client_credentials"
    }
    response = requests.post(url, auth=(client_id, client_secret), data=data)
    return response.json()["access_token"]

Setting up the API Client

Now, let's create a base API client class:

class SFCCClient:
    def __init__(self, client_id, client_secret, base_url):
        self.client_id = client_id
        self.client_secret = client_secret
        self.base_url = base_url
        self.access_token = None

    def get_headers(self):
        if not self.access_token:
            self.access_token = get_access_token(self.client_id, self.client_secret)
        return {
            "Authorization": f"Bearer {self.access_token}",
            "Content-Type": "application/json"
        }

    def make_request(self, method, endpoint, data=None):
        url = f"{self.base_url}{endpoint}"
        response = requests.request(method, url, headers=self.get_headers(), json=data)
        response.raise_for_status()
        return response.json()

Implementing Core API Endpoints

Let's add methods for core endpoints:

class SFCCClient(SFCCClient):
    def get_product(self, product_id):
        return self.make_request("GET", f"/products/{product_id}")

    def create_order(self, order_data):
        return self.make_request("POST", "/orders", data=order_data)

    def get_customer(self, customer_id):
        return self.make_request("GET", f"/customers/{customer_id}")

    def update_inventory(self, inventory_data):
        return self.make_request("PATCH", "/inventory", data=inventory_data)

Error Handling and Rate Limiting

Don't forget to handle those pesky errors and respect rate limits:

import time
from requests.exceptions import RequestException

class SFCCClient(SFCCClient):
    def make_request(self, method, endpoint, data=None, retries=3):
        for attempt in range(retries):
            try:
                response = super().make_request(method, endpoint, data)
                return response
            except RequestException as e:
                if attempt == retries - 1:
                    raise
                time.sleep(2 ** attempt)  # Exponential backoff

Data Parsing and Transformation

Keep it simple with JSON handling:

import json

def parse_response(response):
    return json.loads(response)

Example Use Cases

Let's put our client to work:

client = SFCCClient("your_client_id", "your_client_secret", "https://your-instance.demandware.net/s/-/dw/data/v21_3")

# Fetch product info
product = client.get_product("product123")
print(f"Product name: {product['name']}")

# Create an order
order_data = {"customer": {"email": "[email protected]"}, "products": [{"id": "product123", "quantity": 1}]}
order = client.create_order(order_data)
print(f"Order created with ID: {order['id']}")

# Update inventory
inventory_data = {"product_id": "product123", "quantity": 100}
client.update_inventory(inventory_data)
print("Inventory updated successfully")

Testing and Validation

Don't skip testing! Here's a quick unit test example:

import unittest
from unittest.mock import patch

class TestSFCCClient(unittest.TestCase):
    @patch('requests.request')
    def test_get_product(self, mock_request):
        mock_request.return_value.json.return_value = {"id": "product123", "name": "Test Product"}
        client = SFCCClient("test_id", "test_secret", "https://test.com")
        product = client.get_product("product123")
        self.assertEqual(product["name"], "Test Product")

if __name__ == '__main__':
    unittest.main()

Best Practices and Optimization

• Implement caching for frequently accessed data.
• Use asynchronous requests for better performance.
• Log all API interactions for monitoring and debugging.

Conclusion

And there you have it! You've just built a solid Salesforce Commerce Cloud API integration in Python. Remember, this is just the beginning. Keep exploring the API documentation, experiment with different endpoints, and don't be afraid to push the boundaries of what you can do with this integration.

Happy coding, and may your API calls always return 200 OK!