def postgres_service(docker_services, docker_ip,
docker_compose_file) -> DataSourceName:
# container environment
with open(docker_compose_file) as fh:
config = yaml.safe_load(fh)
environ = config["services"]["postgres"]["environment"]
dsn = DataSourceName(
user=environ["POSTGRES_USER"],
password=environ["POSTGRES_PASSWORD"],
host=docker_ip,
port=docker_services.port_for("postgres", 5432),
database=environ["POSTGRES_DB"],
application_name="test-app",
)
# Wait until service is responsive.
docker_services.wait_until_responsive(
check=lambda: is_postgres_responsive(dsn),
timeout=30.0,
pause=0.1,
)
return dsn
async def wait_till_postgres_responsive(dsn: DataSourceName) -> None:
if not is_postgres_responsive(dsn):
raise Exception