events daemon dies easily about calendar

[MareoRaft]

It could be that one of the connections within the application terminates. Like if the mongo cursor terminates, we can just create a new cursor each time we want to access db. If the google service terminates, we can just create a new service each time we want to access db. But I'm not sure the cause of the broken pipe.

[MareoRaft]

branch daemon

to troubleshoot this. First I'll try getting a new google service.

[MareoRaft]

Troubleshoot. First try to reproduce error:

daemon started 9:57 am...

[MareoRaft]

The stacktrace says the final function in MY code is

service.events().list(...params...).execute()

So I think the google service loses connection.

[MareoRaft]

I'll try to create a new google service each time...

[MareoRaft]

I am now running the 'daemon' branch on the server. So if the daemon is still running on Tuesday Sept 18, we can merge this into master and consider the problem resolved.

[MareoRaft]

nope. it broke again. On Sept 16, 1:48 pm....

Traceback (most recent call last):
  File "./events_daemon.py", line 25, in <module>
    main()
  File "./events_daemon.py", line 20, in main
    get_events_and_update_db()
  File "./events_daemon.py", line 13, in get_events_and_update_db
    (events, datetime_retrieved) = get_events(get_service(), cal_names=CAL_NAMES)
  File "/usr/home/freebsd/schedule/server-side/main.py", line 36, in get_events
    orderBy='startTime'
  File "/usr/local/lib/python3.6/site-packages/googleapiclient/_helpers.py", line 130, in positional_wrapper
    return wrapped(*args, **kwargs)
  File "/usr/local/lib/python3.6/site-packages/googleapiclient/http.py", line 840, in execute
    raise HttpError(resp, content, uri=self.uri)
googleapiclient.errors.HttpError: <HttpError 503 when requesting https://www.googleapis.com/calendar/v3/calendars/gtbqdl9o6cpntqvlgnjbr6k00c%40group.calendar.google.com/events?timeMin=2018-09-16T17%3A53%3A29.499270Z&maxResults=200&singleEvents=true&orderBy=startTime&alt=json returned "Backend Error">

[MareoRaft]

Now I changed it so that it's in a try block, so it will just keep trying again, even if it errors. Now we wait another 4 days to see if this works. Until Saturday, Sept. 22.

[MareoRaft]

This seems to be working!