serverless.yml

service: serverless-dynamodb-backup

custom:
  bucket: EXAMPLE
  dynamoDBTableName: "${opt:stage, self:provider.stage}_EXAMPLE"
  prefix: FOO

provider:
  name: aws
  runtime: nodejs12.x
  stage: staging
  iam:
    role:
      statements:
        - Effect: Allow
          Action:
            - s3:PutObject
          Resource: "arn:aws:s3:::${self:custom.bucket}/${self:custom.prefix}/${self:custom.dynamoDBTableName}/*"
        - Effect: Allow
          Action:
            - "dynamodb:GetRecords"
            - "dynamodb:GetShardIterator"
            - "dynamodb:DescribeStream"
            - "dynamodb:ListStreams"
          Resource: "arn:aws:dynamodb:ap-southeast-1:*:table/${self:custom.dynamoDBTableName}/stream/*"

functions:
  backup:
    handler: handler.backup
    environment:
      STAGE: "${opt:stage, self:provider.stage}"
      BUCKET: "${self:custom.bucket}"
      TABLE: "${self:custom.dynamoDBTableName}"
      PREFIX: "${self:custom.prefix}"
    timeout: 300