AWSTemplateFormatVersion: 2010-09-09

Transform: AWS::Serverless-2016-10-31

Description: Workload Discovery on AWS DrawIo Export API

Parameters:
  DeploymentBucket:
    Type: String

  DeploymentBucketKey:
    Type: String

  PerspectiveAppSyncApiId:
    Type: String

Resources:

  DrawIoLambdaFunctionRole:
    Type: AWS::IAM::Role
    Properties:
      Path: '/'
      ManagedPolicyArns:
        - arn:aws:iam::aws:policy/service-role/AWSLambdaBasicExecutionRole
        - arn:aws:iam::aws:policy/AWSXRayDaemonWriteAccess
      AssumeRolePolicyDocument:
        Statement:
          - Effect: Allow
            Principal:
              Service:
                - lambda.amazonaws.com
            Action: sts:AssumeRole

  DrawIoFunction:
    Type: AWS::Serverless::Function
    Metadata:
      cfn_nag:
        rules_to_suppress:
          - id: W89
            reason: This Lambda does not connect to any resources in a VPC
    Properties:
      Description: Converts Worload Discovery diagram to a Draw IO URL
      Runtime: python3.9
      Handler: main.handler
      CodeUri:
        Bucket: !Ref DeploymentBucket
        Key: !Sub ${DeploymentBucketKey}/drawio.zip
      Timeout: 5
      MemorySize: 256
      ReservedConcurrentExecutions: 5

  DrawIoInvokeRole:
    Type: AWS::IAM::Role
    Properties:
      AssumeRolePolicyDocument:
        Version: 2012-10-17
        Statement:
          - Effect: Allow
            Principal:
              Service:
                - appsync.amazonaws.com
            Action:
              - sts:AssumeRole
      Policies:
        - PolicyName: !Sub ${AWS::StackName}-AppSyncDrawIohRole
          PolicyDocument:
            Version: 2012-10-17
            Statement:
              - Effect: Allow
                Action:
                  - lambda:InvokeFunction
                Resource: !GetAtt DrawIoFunction.Arn

  DrawIoExportLambdaDataSource:
    Type: AWS::AppSync::DataSource
    Properties:
      ApiId: !Ref PerspectiveAppSyncApiId
      Name: DrawIo_Lambda_DS9
      Description: ADrawIo Export Lambda AppSync Data Source
      Type: AWS_LAMBDA
      ServiceRoleArn: !GetAtt DrawIoInvokeRole.Arn
      LambdaConfig:
        LambdaFunctionArn: !GetAtt DrawIoFunction.Arn

  DrawIoExporteResolver:
    Type: AWS::AppSync::Resolver
    Properties:
      ApiId: !Ref PerspectiveAppSyncApiId
      TypeName: Query
      FieldName: exportToDrawIo
      DataSourceName: !GetAtt DrawIoExportLambdaDataSource.Name