Parameters:
  PathA:
    Type: String
    Default: SomeInputPath
  PathB:
    Type: String
    Default: AnotherInputPath

Conditions:
  PathCondition:
    Fn::Equals:
    - true
    - true

Resources:
  LambdaFunction:
    Type: AWS::Serverless::Function
    Properties:
      CodeUri: s3://sam-demo-bucket/hello.zip
      Handler: hello.handler
      Runtime: python2.7
      Events:
        OnTerminate:
          Type: CloudWatchEvent
          Properties:
            EventBusName: !Join ['', [Event, Bus, Name]]
            Input: !Join [':', ['{ Key', 'Value }']]
            InputPath: !If [PathCondition, !Ref PathA, !Ref PathB]
            Pattern:
              detail:
                state: !Split [',', 'terminated,stopped']