externals.c4

model {

  amazon = externalSystem 'Amazon' {
    description: 'Cloud and managed services provider'

    rds = container 'RDS' {
      description: 'Relational Database Service'

      pg = component 'PostgreSQL' {
        #db

        tblUsers = table 'Users Table' {
          #deprecated
          description: '
            Table with registered users.
            Contains references to Identity provider.
            [deprecated, moving to Aurora]
          '
        }
      }

    }

    sqs = container {
      title: 'SQS'
      description: 'Simple Queue Service'

      queue queue1 'Raw Data' {
        description: 'Queue with raw data'
      }

      queue queue2 'Enriched Data' {
        description: '
          Filtered and preprocessed data
          Ready for further processing
        '
      }      
    }

    lambdas = container {
      title: 'Lambdas'
      description: 'Serverless compute'

      fn_enrich = lambda 'Enrichment' {
        description: '
          Enriches raw data
          by adding additional information
        '
      }

      fn_enrich -> queue1 "reads raw data"
      fn_enrich -> queue2 "writes enriched data"
    }
  }

}

views {

  view amazon of amazon {
    title "Amazon"

    include
      *,
      cloud,
      cloud.* -> amazon.*,

    style * {
      color secondary
    }
    style amazon, cloud {
      color muted
    }
    style amazon.* {
      color green
    }
  }

  view amazon_sqs of sqs {
    title 'Amazon: SQS'

    include
      *,
      amazon,
      cloud,
      cloud.next.* -> sqs.*

    style * {
      color secondary
    }
    style amazon, cloud {
      color muted
    }
    style sqs, sqs.* {
      color green
    }        
  }

  view amazon_lambdas of lambdas {
    title 'Amazon: Lambdas'
    
    include
      *,
      amazon,
      amazon.sqs,
      -> amazon.sqs.*

    style * {
      color secondary
    }
    style amazon {
      color muted
    }
    style lambdas, lambdas.* {
      color green
    }      
  }

  view amazon_rds of amazon.rds {
    title 'Amazon: RDS'

    include
      *,
      cloud,
      cloud.* -> amazon.rds.pg.*,
      cloud.* -> amazon.rds.aurora.*,
      
    style * {
      color muted
    }
    style cloud.* {
      color secondary
    }
    style amazon.rds.* {
      color green
    }
  }  

}