-slack_signing_secret = os.environ['SLACK_SIGNING_SECRET']
-slack_bot_token = os.environ['SLACK_BOT_TOKEN']
+if 'SLACK_SIGNING_SECRET' in os.environ:
+ slack_signing_secret = os.environ['SLACK_SIGNING_SECRET']
+else:
+ ssm = boto3.client('ssm')
+ response = ssm.get_parameter(Name='SLACK_SIGNING_SECRET',
+ WithDecryption=True)
+ slack_signing_secret = response['Parameter']['Value']
+ os.environ['SLACK_SIGNING_SECRET'] = slack_signing_secret