Docs
Examples
JavaScript Example

Function Configuration

  • Language: JavaScript
  • Image: node:20.13.1-slim
  • Concurrency: Sync
  • Environment Variables:
    • API_KEY: Your API key for making external requests.
  • Packages:
    • axios: For making HTTP requests.
    • dotenv: For loading environment variables (optional if using a .env file).

Function Code

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

const axios = require('axios');
 
const handler = async (request) => {
  const paramValue = request.params?.param_name;
  if (!paramValue) {
    return {
      statusCode: 400,
      body: "Missing 'param_name' in query parameters."
    };
  }
 
  const apiKey = process.env.API_KEY;
  const apiUrl = `https://api.example.com/data?query=${paramValue}&apiKey=${apiKey}`;
 
  return makeExternalRequest(apiUrl);
};
 
const makeExternalRequest = async (apiUrl) => {
  try {
    const response = await axios.get(apiUrl);
    return {
      statusCode: 200,
      body: JSON.stringify(response.data)
    };
  } catch (error) {
    if (error.response) {
      return {
        statusCode: error.response.status,
        body: `External API request failed: ${error.message}`
      };
    } else if (error.request) {
      return {
        statusCode: 500,
        body: "No response received from external API."
      };
    } else {
      return {
        statusCode: 500,
        body: `Request setup failed: ${error.message}`
      };
    }
  }
};
Python ExampleAdditional Examples