---
AWSTemplateFormatVersion: '2010-09-09'

Description: >
  From the blog post, Visualize your Amazon Lookout for Metrics Anomaly Results, this script will
  create the Glue Crawler.

Resources:

  L4MCrawlerRole:
    Type: AWS::IAM::Role
    Properties:
      AssumeRolePolicyDocument:
        Version: '2012-10-17'
        Statement:
          - Effect: Allow
            Principal:
              Service:
                - glue.amazonaws.com
            Action:
              - sts:AssumeRole
      ManagedPolicyArns:
        - 'arn:aws:iam::aws:policy/service-role/AWSGlueServiceRole'
      Policies: 
        - PolicyName: L4MCrawlerRoleInlinePolicy
          PolicyDocument: 
            Version: '2012-10-17'
            Statement:
              - Effect: Allow
                Action:
                  - s3:ListBucket
                Resource:
                  - Fn::Sub:
                    - 'arn:aws:s3:::${BucketName}'
                    - BucketName: !ImportValue L4MS3BucketName
              - Effect: Allow
                Action:
                  - s3:GetObject
                  - s3:PutObject
                Resource:
                  - Fn::Sub:
                    - 'arn:aws:s3:::${BucketName}/ecommerce/live/*'
                    - BucketName: !ImportValue L4MS3BucketName
                  - Fn::Sub:
                    - 'arn:aws:s3:::${BucketName}/anomalyResults/dimensionContributions/*'
                    - BucketName: !ImportValue L4MS3BucketName
                  - Fn::Sub: 
                    - 'arn:aws:s3:::${BucketName}/anomalyResults/metricValue_AnomalyScore/*'
                    - BucketName: !ImportValue L4MS3BucketName
 
  L4MCrawler:
    Type: AWS::Glue::Crawler
    Properties:
      Name: L4MCrawler
      Role: !GetAtt L4MCrawlerRole.Arn
      DatabaseName: !Ref L4MCrawlerOutputDatabase
      Targets:
        S3Targets:
          - Path:
              Fn::Sub:
                - '${BucketName}/ecommerce/live'
                - BucketName: !ImportValue L4MS3BucketName
          - Path: 
              Fn::Sub:
                - '${BucketName}/anomalyResults/dimensionContributions'
                - BucketName: !ImportValue L4MS3BucketName
          - Path: 
              Fn::Sub: 
                - '${BucketName}/anomalyResults/metricValue_AnomalyScore'
                - BucketName: !ImportValue L4MS3BucketName

  L4MCrawlerOutputDatabase:
    Type: AWS::Glue::Database
    Properties:
      CatalogId: !Ref AWS::AccountId
      DatabaseInput:
        Name: 'l4m-crawler-output-db'
        Description: "DB Location for Output from the L4M Crawler"