AWS Cloudformation Template Parameters for SAM Local

Question

In SAM Local's template.yaml, is it possible to define a set of parameters such that they become Cloudformation parameters?

The reason I want this is I'd like to create a Launch Stack Url that allows the user to provide Cloudformation parameter values.

Answer 1

After fiddling around a bit this looks possible. You need to define a root level Parameters as you would for a normal cloudformation template. Hence here is what mine looks like:

AWSTemplateFormatVersion: '2010-09-09'
Globals:
  Function:
    Timeout: 300

...

Parameters:
  MyUserParameter:
    Type: String
Resources:
  HelloWorldFunction:
    Properties:
      CodeUri: s3://blah/blah
      Environment:
        Variables:
          FOO: bar
      Events:
        CatchAll:
          Properties:
            Method: GET
            Path: /hello
          Type: Api
      Handler: hello-world
      Runtime: go1.x
      Tracing: Active
    Type: AWS::Serverless::Function
Transform: AWS::Serverless-2016-10-31