How to combine context object with task input in step function Lambda invoke?

Question

aws_stepfunctions_tasks.LambdaInvoke.__init__ takes an input_path argument, which defaults to $ - the entire task input. How can I combine that with the context object ( $$ ), since my Lambda needs information from both ? Or do I need to use something else, like the payload argument, to specify more than one input?

Answer 1

To pass both, the payload and context to lambda function, you will need to wrap the original input inside the another attribute for instance Payload

{
....
"ACCESS": {
      "Type": "Task",
      "Parameters": {
        "Payload.$": "$",
        "Context.$": "$$"
      },
      "Resource": "my_lambda_arn",
      "Next": "SLACK_MESSAGE"
    }
...
}