AWS CloudFront Function to Redirect URLs

aws-cloudfront-function-redirects.js

function handler(event) {
    // NOTE: This example function is for a viewer request event trigger. 
    // Choose viewer request for event trigger when you associate this function with a distribution.

    var newLocation = "";
    var statusCode = 301;
    var statusDescription = "Moved Permanently";
    
    switch(event.request.uri) {
      case "/test-pdf-1.pdf":
        newLocation = "/test-pdf-2.pdf";
        statusCode = 301;
        break;
      case "/test-pdf-2.pdf":
        newLocation = "https://www.google.com";
        statusCode = 302;
        break;
    }
    
    if (statusCode === 302) {
        statusDescription = "Found";
    }
    
    if (newLocation !== "") {
        var response = {
            statusCode: statusCode,
            statusDescription: statusDescription,
            headers: {
                'location': { value: newLocation }
            }
        };
        return response;
    } else {
        return event.request;
    }
}