INNER CODE UNIT · Python

check_envs

aws-powertools/powertools-lambda-python · layer_v3/layer/canary/app.py:73

def check_envs():
    logger.info('Checking required envs ["POWERTOOLS_LAYER_ARN", "AWS_REGION", "STAGE"]')
    if not layer_arn:
        raise ValueError("POWERTOOLS_LAYER_ARN is not set. Aborting...")
    if not powertools_version:
        raise ValueError("POWERTOOLS_VERSION is not set. Aborting...")
    if not stage:
        raise ValueError("LAYER_PIPELINE_STAGE is not set. Aborting...")
    if not event_bus_arn:
        raise ValueError("VERSION_TRACKING_EVENT_BUS_ARN is not set. Aborting...")
    logger.info("All envs configured, continue...")


def verify_powertools_version() -> None:
    """
    fetches the version that we import from the Powertools for AWS Lambda (Python) layer and compares
    it with expected version set in environment variable, which we pass during deployment.
    :raise ValueError if the expected version is not the same as the version we get from the layer

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