Re: [bisque-bioimage] Prevent system stuck when there is no internet connection

[Dmitry Fedorov]

Hi  Aliaksei,

The key here is the what happens at the end:

    raise ConnectionError(err, request=request) 

An exception is raised and you simply need to catch it and decide to do nothing about it or perhaps enque the image for later upload when the connection is there.

-dmitry

On Thu, Mar 15, 2018 at 7:44 AM, <aliak...@gmail.com> wrote:

Dear Bisque Support Team,

I am using Bisque API on my web-interface written in Python2.7. The server is a RaspberryPi with raspstill camera. What Bisque API does is uploads the pictures taken by raspistill camera to Bisque.
The problem is that once the internet connection is broken, the picture cannot be uploaded and the system is stuck (see the log messages below).
Is there anything I can do in order to make the system just not upload the picture when there is no internet, and continue the operation?


This is the log messages:
1] Starting new HTTP connection (1): bisque.iplantcollaborative.org
Exception in thread Thread-1:
Traceback (most recent call last):
  File "/usr/lib/python2.7/threading.py", line 801, in __bootstrap_inner
    self.run()
  File "/usr/lib/python2.7/threading.py", line 754, in run
    self.__target(*self.__args, **self.__kwargs)
  File "/home/pi/phenotiki/env/raspistillWeb/raspistillweb/views.py", line 805, in button_loop
    take_photo(filename)
  File "/home/pi/phenotiki/env/raspistillWeb/raspistillweb/views.py", line 579, in take_photo
    bqsession = setbasicauth(app_settings.bisque_root_url, app_settings.bisque_user, app_settings.bisque_pswd)
  File "/home/pi/phenotiki/env/raspistillWeb/raspistillweb/views.py", line 730, in setbasicauth
    bqsession.init_cas(username, password, bisque_root=bisquehost, create_mex=False)
  File "build/bdist.linux-armv7l/egg/bqapi/comm.py", line 416, in init_cas
    caslogin (self.c, bisque_root + "/auth_service/login", user, pwd)
  File "build/bdist.linux-armv7l/egg/bqapi/casauth.py", line 14, in caslogin
    cas_page = session.get(caslogin, params = params)
  File "/home/pi/phenotiki/env/local/lib/python2.7/site-packages/requests/sessions.py", line 477, in get
    return self.request('GET', url, **kwargs)
  File "/home/pi/phenotiki/env/local/lib/python2.7/site-packages/requests/sessions.py", line 465, in request
    resp = self.send(prep, **send_kwargs)
  File "/home/pi/phenotiki/env/local/lib/python2.7/site-packages/requests/sessions.py", line 573, in send
    r = adapter.send(request, **kwargs)
  File "/home/pi/phenotiki/env/local/lib/python2.7/site-packages/requests/adapters.py", line 415, in send
    raise ConnectionError(err, request=request)
ConnectionError: ('Connection aborted.', gaierror(-3, 'Temporary failure in name resolution'))

All the Best,
Aliaksei

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__________________________________

Dmitry Fedorov Levit <di...@dimin.net>
Web: http://www.dimin.net/
__________________________________

Center for Bio-Image Informatics:
  <http://www.bioimage.ucsb.edu/>

Vision Research Lab, Electrical and Computer Engineering:
  <http://vision.ece.ucsb.edu/>

University of California, Santa Barbara
_________________________________