let redshift_clusters = Resources.*[ Type == 'AWS::Redshift::Cluster']

rule DB_PORT_COMPLIANT when %redshift_clusters !empty {
	Parameters.DBPort exists 
	Parameters.DBPort.Default exists
	Parameters.DBPort.Default == 3306
  <<
    Violation: DB Port Default should be 3306.
    Fix: Set Default DB Port to 3306
  >>
}

rule DB_NAME_COMPLIANT when %redshift_clusters !empty {
  %redshift_clusters.Properties.DBName exists 
  %redshift_clusters.Properties.DBName == "mydb"
  <<
    Violation: DB Port Name should be "mydb".
    Fix: Set DBName to "mydb"
  >>
}

rule DB_METADATA_EXISTS when %redshift_clusters !empty {
  Metadata.Instances exists 
  Metadata.Instances.Description exists
  Metadata.Databases exists 
  Metadata.Databases.Description exists
  <<
    Violation: DB Metadata is incomplete. Need description for instances and databases.
    Fix: Add metadata properties for description of Instances and Databases.
  >>
}