Bug: Handle re exception img_json

[omero-qa]

Feedback 4679

​http://localhost:8000/qa2/qa/feedback/4679/

Comment: This occurs when there is no thumbnail available and I click on launch full viewer. Is there anyway to have the server handle this error in a more graceful way? Is there anyway to have a 32 bit tiled grey scale image produce a thumbnail? Overall image size doesn't matter as I get the same issue with small 1 Mb images in larger 50 Mb images.

("error in call","Traceback (most recent call last):
  File "/usr/omero/lib/python/omeroweb/webgateway/views.py", line 1013, in wrap
    rv = f(request, *args, **kwargs)
  File "/usr/omero/lib/python/omeroweb/webgateway/views.py", line 1121, in imageData_json
    rv = imageMarshal(image, key)
  File "/usr/omero/lib/python/omeroweb/webgateway/marshal.py", line 96, in imageMarshal
    reOK = image._prepareRenderingEngine()
  File "/usr/omero/lib/python/omero/gateway/__init__.py", line 5702, in _prepareRenderingEngine
    self._re = self._prepareRE(rdid=rdid)
  File "/usr/omero/lib/python/omero/gateway/__init__.py", line 5683, in _prepareRE
    re.load(ctx)
  File "/usr/omero/lib/python/omero/gateway/__init__.py", line 3327, in __call__
    return self.handle_exception(e, *args, **kwargs)
  File "/usr/omero/lib/python/omeroweb/webclient/webclient_gateway.py", line 1875, in handle_exception
    super(OmeroWebSafeCallWrapper, self).handle_exception(
  File "/usr/omero/lib/python/omero/gateway/__init__.py", line 3324, in __call__
    return self.f(*args, **kwargs)
  File "/usr/omero/lib/python/omero_api_RenderingEngine_ice.py", line 410, in load
    return _M_omero.api.RenderingEngine._op_load.invoke(self, ((), _ctx))
InternalException: exception ::omero::InternalException
{
    serverStackTrace = ome.conditions.InternalException:  Wrapped Exception: (java.lang.ArrayIndexOutOfBoundsException):
null

    serverExceptionClass = ome.conditions.InternalException
    message =  Wrapped Exception: (java.lang.ArrayIndexOutOfBoundsException):
null
}
")

[mlinkert]

This depends upon #1303, I think.

[wmoore]

​https://www.openmicroscopy.org/qa2/qa/feedback/4712/ Same again.

[wmoore]

Fixed in ​https://github.com/openmicroscopy/openmicroscopy/pull/464

[Will Moore <will@…>]

(In [b393ec3de4af04172ce1adc636542c197603e328/ome.git] on branch develop) Better error handling for json imageData. See #9731