/// <summary>
/// A simple function that takes a string and does a ToUpper
/// </summary>
/// <param name="input"></param>
/// <param name="context"></param>
/// <returns></returns>
public void FunctionHandler(JObject input, ILambdaContext context)
{
LambdaLogger.Log($"Received input as {input.ToString()}");
var request = input.ToObject <cfnRequest>();
var response = new cfnResponse();
//build all the common responses from the request
response.StackId = request.stackId;
response.RequestId = request.requestId;
response.LogicalResourceId = request.logicalResourceId;
response.NoEcho = false;
response.PhysicalResourceId = "My_custom_physical_resource_id";
response.Reason = "See CloudWatch logs for detail";
// Sample - gather custom properties from the CloudFormation custom resource
var resourceProperties = request.resourceProperties.ToObject <ResourceProperties>();
var awsregion = resourceProperties.Region;
var serviceToken = resourceProperties.ServiceToken;
switch (request.resourceType.ToLower())
{
case "create":
LambdaLogger.Log("Received Create request");
// Sample: do some stuff, then set the response.Status field
response.Status = "SUCCESS";
break;
case "delete":
LambdaLogger.Log("Received Create request");
response.Status = "SUCCESS";
break;
case "update":
LambdaLogger.Log("Received Create request");
response.Status = "SUCCESS";
break;
}
LambdaLogger.Log($"Uploading response to {request.responseUrl} ");
Uploader.UploadResponse(request.responseUrl, response);
LambdaLogger.Log("Finished");
}
// Class to upload response JSON to the pre-signed URL
public static void UploadResponse(string url, cfnResponse response)
{
string json = JsonConvert.SerializeObject(response);
byte[] byteArray = Encoding.UTF8.GetBytes(json);
LambdaLogger.Log($"trying to upload json {json}");
HttpWebRequest httpRequest = WebRequest.Create(url) as HttpWebRequest;
httpRequest.Method = "PUT";
//If ContentType is set to anything but "" your upload will fail
httpRequest.ContentType = "";
httpRequest.ContentLength = byteArray.Length;
LambdaLogger.Log($"Starting upload of {byteArray.Length}");
using (Stream datastream = httpRequest.GetRequestStream())
{
datastream.Write(byteArray, 0, byteArray.Length);
}
HttpWebResponse result = httpRequest.GetResponse() as HttpWebResponse;
LambdaLogger.Log($"Result of upload is {result.StatusCode}");
}