bundlewrap/bundles/postgresql/items.py

postgres_roles = {}
postgres_dbs = {}

for user, config in node.metadata['postgresql']['users'].items():
    postgres_roles[user] = {
        'password': config['password'],
    }

for database, config in node.metadata['postgresql']['databases'].items():
    postgres_dbs[database] = {
        'owner': config['owner'],
    }