Get AWS Lambda SSM variables in Zappa

ssm_env_vars.py

import os

import boto3


class Environment(enum.Enum):

    DEVELOPMENT = 'development'
    TEST = 'test'
    CI = 'ci'
    STAGING = 'staging'
    PRODUCTION = 'production'

    def __str__(self) -> str:
        return str(self.value)

    def __eq__(self, value) -> bool:
        return str(self) == value

# STAGE is a var provided by Zappa indicating an arbitrarily defined
# environment name as defined in zappa_settings.json
APP_ENV: str = os.getenv('STAGE', os.getenv('APP_ENV', str(Environment.DEVELOPMENT))
APP_NAME: str = os.getenv('APP_NAME')
APP_LOAD_SSM_VARS: bool = os.getenv('APP_LOAD_SSM_VARS')
AWS_SSM_VAR_PATH: str = f'/{APP_ENV}/{APP_NAME}/'
SERVER_TYPE: str = os.getenv('SERVERTYPE') 
if APP_LOAD_SSM_VARS & SERVER_TYPE == 'AWS Lambda':
    ssm = boto3.client('ssm')
    ssm_vars = {
       'Path': AWS_SSM_VAR_PATH,
       'Recursive': True,
       'WithDecryption': True,
    }
    while True:
        response = ssm.get_parameters_by_path(**ssm_vars)
        for param in response.get('Parameters'):
            var_name = os.path.basename(param['Name'])
            logger.info(f'Setting {var_name}')
            os.environ[var_name] = param['Value']
        next_token: typing.Optional[str] = response.get('NextToken')
        if not next_token:
            break
        ssm_vars['NextToken'] = next_token