Attaching Policies To Roles

Serverless Framework
1

I see you can write custom roles with multiple policies in-line with them. They can be attached to lambdas/SQS/SNS etc. I’d like to write policies as separate components I can attach to roles. So a role can be made up of several policy components by reference. Is this possible? This is pseudo yml which won’t work, but shows what I am after:

service: thing

plugins:

  • serverless-plugin-scripts

provider:
name: aws
runtime: nodejs12.x

functions:
hello0:
handler: handler.hello
role: DemoRole

hello1:
handler: handler.hello
role: DemoRoleWithExtraStuff

resources:
Resources:

DemoRole:
  Type: AWS::IAM::Role
  Properties:
    PolicyName: Test
    PolicyDocument:
      ManagedPolicyArns:
      - !Ref BasicLambdaPolicy

DemoRoleWithExtraStuff:
  Type: AWS::IAM::Role
  Properties:
    PolicyName: Test
    PolicyDocument:
      ManagedPolicyArns:
      - !Ref BasicLambdaPolicy
      - !Ref AnotherBasicLambdaPolicy

BasicLambdaPolicy:
  Type: AWS::IAM:ManagedPolicy
  Properties:
    PolicyName: DemoDetectorPolicy
    PolicyDocument:
    Version: '2012-10-17'
    Statement:
      - Effect: Allow
        Action:
          - someAction

AnotherBasicLambdaPolicy:
  Type: AWS::IAM:ManagedPolicy
  Properties:
    PolicyName: DemoDetectorPolicy
    PolicyDocument:
    Version: '2012-10-17'
    Statement:
      - Effect: Allow
        Action:
          - someAction