Azure Function: Node.js code to read Environment Variables during function execution and return variables as JSON

index.js

// Azure Function: Node.js code to read Environment Variables during function execution and return variables as JSON
// Author: Dhyanendra Singh Rathore

// Entry point of the function
module.exports = async function(context, req) {

    // Fetch environment variables during execution
    const postgresServerName = process.env["POSTGRES_SERVER_NAME"];
    const postgresUserName = process.env["POSTGRES_USER"];

    // Create JSON response with the variables 
    const responseMessage = {
        "Server FQDN": postgresServerName,
        "User Name": postgresUserName
    };

    // Return the response
    context.res = {
        status: 200,
        isRaw: true,
        body: responseMessage,
        headers: {
            'Content-Type': 'application/json'
        }
    };
}