example-serverless.yml

service: cloudformation-custom-resources

# Note: I write these examples using the latest version of Serverless. I pin the example
# to that version so that I know it will work for you even if you find it a year later.
# Likely, you can remove this line and use the example with any recent version of
# Serverless. Give it a shot if you're using a different version.
frameworkVersion: 1.34.1

custom:
   defaultRegion: us-east-1
   region: ${opt:region, self:custom.defaultRegion}
   stage: ${opt:stage, env:USER}
   objectPrefix: '${self:service}-${self:custom.stage}'

package:
   exclude:
      - 'tests/**'

provider:
   name: aws
   runtime: nodejs6.10
   stackTags: # NOTE: STAGE is automatically added by SLS
      SLS_SVC_NAME: ${self:service}
   region: ${self:custom.region}
   stage: ${self:custom.stage}
   environment:
      SLS_SVC_NAME: ${self:service}
      SLS_STAGE: ${self:custom.stage}
   iamRoleStatements:
      # Permissions needed for various services:
      # We know that APIGatewayDomainName requires this, and likely other resources do as
      # well. See
      # https://aws.amazon.com/blogs/security/introducing-an-easier-way-to-delegate-permissions-to-aws-services-service-linked-roles/
      -
         Effect: 'Allow'
         Action:
            - 'iam:CreateServiceLinkedRole'
         Resource:
            - '*'
      # Permissions needed for SNSSQSSubscription:
      -
         Effect: 'Allow'
         Action:
            - 'sns:Subscribe'
            - 'sns:Unsubscribe'
         Resource:
            - '*'
      # Permissions needed for DynamoDBGlobalTable:
      -
         Effect: 'Allow'
         Action:
            - 'dynamodb:DescribeTable'
            - 'dynamodb:DescribeGlobalTable'
            - 'dynamodb:CreateTable'
            - 'dynamodb:CreateGlobalTable'
            - 'dynamodb:UpdateTable'
            - 'dynamodb:UpdateGlobalTable'
            - 'dynamodb:DeleteTable'
            - 'dynamodb:ListTagsOfResource'
            - 'dynamodb:TagResource'
         Resource:
            - '*'
      # Permissions needed for SimpleEmailServiceDomainVerification:
      -
         Effect: 'Allow'
         Action:
            - 'ses:VerifyDomainIdentity'
            - 'ses:DeleteIdentity'
         Resource:
            - '*'
      # Permissions needed for SimpleEmailServiceRuleSetActivation:
      -
         Effect: 'Allow'
         Action:
            - 'ses:SetActiveReceiptRuleSet'
         Resource:
            - '*'
      # Permissions needed for APIGatewayDomainName:
      -
         Effect: 'Allow'
         Action:
            - 'apigateway:*'
         Resource:
            - '*'
      # Permissions needed for ELBTargetGroup:
      -
         Effect: 'Allow'
         Action:
            - 'elasticloadbalancing:CreateTargetGroup'
            - 'elasticloadbalancing:DeleteTargetGroup'
            - 'elasticloadbalancing:ModifyTargetGroup'
            - 'elasticloadbalancing:ModifyTargetGroupAttributes'
         Resource:
            - '*'
      # Permissions needed for ELBTargetGroupLambdaTarget:
      -
         Effect: 'Allow'
         Action:
            - 'elasticloadbalancing:RegisterTargets'
            - 'elasticloadbalancing:DeregisterTargets'
         Resource:
            - '*'

functions:
   customResources:
      name: ${self:custom.objectPrefix}
      handler: node_modules/@silvermine/cloudformation-custom-resources/src/CustomResourceHandler.handler
      memorySize: 256
      timeout: 300

resources:
   Outputs:
      CustomResourcesServiceToken:
         Description: The ARN of the custom resources Lambda function to use as a service token when using a custom resource.
         Value: { 'Fn::GetAtt': [ 'CustomResourcesLambdaFunction', 'Arn' ] }
         Export:
            Name: '${self:custom.objectPrefix}-ServiceToken'