lambda_handler1.py

def lambda_handler(event, context):
    #... 
    # Fetch secret package
    secrets = get_secret_ssm_layer(bot_secret_name)

    # Disambiguate secrets
    secrets_json = json.loads(secrets)
    TENANT_ID = secrets_json["TENANT_ID"]
    CLIENT_ID = secrets_json["CLIENT_ID"]
    CLIENT_SECRET = secrets_json["CLIENT_SECRET"]
    
    # Get bearer token for the bot to use to post messages
    bot_bearer_token = get_teams_bearer_token(TENANT_ID, CLIENT_ID, CLIENT_SECRET)