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Python Example

Function Configuration

  • Language: Python
  • Image: python:3.12.1-slim
  • Concurrency: Sync
  • Environment Variables:
    • API_KEY: Your API key for making external requests.
  • Packages:
    • requests: For making HTTP requests.
    • json: For parsing JSON responses (included in Python standard library).

Function Code

This function takes a query parameter from the request, makes an external API call using the requests package, parses the response, and returns a custom error message if something goes wrong. Otherwise, it returns a success message.

import os
import requests
 
def handler(request):
    param_value = request.get('params', {}).get('param_name')
    if not param_value:
        return {
            "statusCode": 400,
            "body": "Missing 'param_name' in query parameters."
        }
 
    api_key = os.getenv('API_KEY')
    api_url = f"https://api.example.com/data?query={param_value}&apiKey={api_key}"
 
    return make_external_request(api_url)
 
def make_external_request(api_url):
    try:
        response = requests.get(api_url)
        response.raise_for_status()
        return {
            "statusCode": 200,
            "body": response.json()
        }
    except requests.exceptions.RequestException as e:
        return {
            "statusCode": 500,
            "body": f"External API request failed: {str(e)}"
        }
    except ValueError as e:
        return {
            "statusCode": 500,
            "body": f"JSON decoding failed: {str(e)}"
        }
Request and ResponseJavaScript Example