Update app.py

app.py

@@ -29,6 +29,8 @@ def get_status(credentials, instance_name):
     return status, ip_address
 
 def get_time_remaining(last_start_timestamp, run_duration_seconds):
+    if run_duration_seconds == -1:
+        return -1
     run_duration_seconds = int(run_duration_seconds)
     last_start_dt = parser.isoparse(last_start_timestamp)
     end_run_dt = last_start_dt + timedelta(seconds=run_duration_seconds)
@@ -69,7 +71,7 @@ credentials = auth()
 instance_info = get_server(credentials, instance_name)
 status = instance_info['status']
 ip_address = instance_info['networkInterfaces'][0]['accessConfigs'][0]['natIP'] if status == 'RUNNING' else None
-max_run_duration = instance_info['scheduling']['maxRunDuration']['seconds']
+max_run_duration = instance_info['scheduling']['maxRunDuration']['seconds'] if 'maxRunDuration' in instance_info['scheduling'] else -1
 last_start_timestamp = instance_info['lastStartTimestamp']
 max_remaining_time = get_time_remaining(last_start_timestamp, max_run_duration)