Payload has gcs_file_name field, not config_name.

noerog · web-flow · commit 432fbf589296 · 2018-02-16T17:14:00.000-05:00
diff --git a/iot/api-client/gcs_file_to_device/gcs_example_mqtt_device.py b/iot/api-client/gcs_file_to_device/gcs_example_mqtt_device.py
@@ -125,7 +125,7 @@ def on_message(self, unused_client, unused_userdata, message):
         print('Received new config.')
         bucket_name = data['bucket_name']
         print('Bucket name is: \'{}\''.format(bucket_name))
-        config_name = data['config_name']
+        config_name = data['gcs_file_name']
         print('Config name is: \'{}\''.format(config_name))
         # Destination file name is a byte literal because it's a file
         # name.
