exports.handler = function()

in linux-ami-lookup/index.js [27:67]

• 33 lines of code
• 6 McCabe index (conditional complexity)

exports.handler = function(event, context) {

    console.log("REQUEST RECEIVED:\n" + JSON.stringify(event));
    
    // For Delete requests, immediately send a SUCCESS response.
    if (event.RequestType == "Delete") {
        sendResponse(event, context, "SUCCESS");
        return;
    }

    var responseStatus = "FAILED";
    var responseData = {};

    var ec2 = new aws.EC2({region: process.env.AWS_REGION});
    var describeImagesParams = {
        Filters: [{ Name: "name", Values: [archToAMINamePattern[event.ResourceProperties.Architecture]]}],
        Owners: [event.ResourceProperties.Architecture == "HVMG2" ? "679593333241" : "amazon"]
    };

    // Get AMI IDs with the specified name pattern and owner
    ec2.describeImages(describeImagesParams, function(err, describeImagesResult) {
        if (err) {
            responseData = {Error: "DescribeImages call failed"};
            console.log(responseData.Error + ":\n", err);
        }
        else {
            var images = describeImagesResult.Images;
            // Sort images by name in decscending order. The names contain the AMI version, formatted as YYYY.MM.Ver.
            images.sort(function(x, y) { return y.Name.localeCompare(x.Name); });
            for (var j = 0; j < images.length; j++) {
                if (isBeta(images[j].Name)) continue;
                responseStatus = "SUCCESS";
                responseData["Id"] = images[j].ImageId;
                responseData["Volumes"] = images[j].BlockDeviceMappings;
                break;
            }
        }
        console.log("Response Data: "+JSON.stringify(responseData));
        sendResponse(event, context, responseStatus, responseData);
    });
};