Parameters:
  SQSArn:
    Type: String
    Default: my-sqs-arn
  UseExistingQueue:
    Type: String
    AllowedValues:
    - true
    - false
    Default: true
Conditions:
  QueueCreationDisabled: !Equals [!Ref UseExistingQueue, true]
  FunctionInlineEnabled: !Equals [true, false]
  FunctionCondition: !Equals [true, false]
Resources:
  MyTestFunction:
    Type: AWS::Serverless::Function
    Condition: FunctionCondition
    Properties:
      EventInvokeConfig:
        MaximumEventAgeInSeconds: 70
        MaximumRetryAttempts: 1
        DestinationConfig:
          OnSuccess:
            Type: SQS
            Destination: !If [QueueCreationDisabled, !Ref SQSArn, !Ref 'AWS::NoValue']
          OnFailure:
            Type: Lambda
            Destination: !If [FunctionInlineEnabled, !GetAtt DestinationLambda.Arn,
              some-function-arn]
      InlineCode: |
        exports.handler = function(event, context, callback) {
          var event_received_at = new Date().toISOString();
          console.log('Event received at: ' + event_received_at);
          console.log('Received event:', JSON.stringify(event, null, 2));

          if (event.Success) {
              console.log("Success");
              context.callbackWaitsForEmptyEventLoop = false;
              callback(null);
          } else {
              console.log("Failure");
              context.callbackWaitsForEmptyEventLoop = false;
              callback(new Error("Failure from event, Success = false, I am failing!"), 'Destination Function Error Thrown');
          }
        };      
      Handler: index.handler
      Runtime: nodejs12.x
      MemorySize: 1024
  DestinationLambda:
    Condition: FunctionInlineEnabled
    Type: AWS::Serverless::Function
    Properties:
      InlineCode: |
        exports.handler = async (event) => {
          const response = {
            statusCode: 200,
            body: JSON.stringify('Hello from Lambda!'),
          };
          return response;
        };
      Handler: index.handler
      Runtime: nodejs12.x
      MemorySize: 1024