Handle the case when the licenses service is down better

[rene.kapusta]

I'm using v 1.3.1a and get a lot of "WebApp? Error: <type 'exceptions.Exception'>: Couldn't connect to licenses service: <urlopen error (104, 'Connection reset by peer')>" error messages.

Module ckan.forms.package:87 in build_package_form
<<      # Options/settings
           builder.set_field_option('name', 'validate', package_name_validator)
           builder.set_field_option('license_id', 'dropdown', {'options':[('', None)] + model.Package.get_license_options()})
           builder.set_field_option('state', 'dropdown', {'options':model.State.all})
           builder.set_field_option('notes', 'textarea', {'size':'60x15'})
>>  builder.set_field_option('license_id', 'dropdown', {'options':[('', None)] + model.Package.get_license_options()})
Module ckan.model.package:283 in get_license_options
<<      @classmethod
           def get_license_options(self):
               register = self.get_license_register()
               return [(l.title, l.id) for l in register.values()]
>>  register = self.get_license_register()
Module ckan.model.package:278 in get_license_register
<<      def get_license_register(self):
               if not hasattr(self, '_license_register'):
                   self._license_register = LicenseRegister()
               return self._license_register
>>  self._license_register = LicenseRegister()
Module ckan.model.license:46 in __init__
<<              from licenses.service import LicensesService2
                   self.service = LicensesService2(group_url)
                   entity_list = self.service.get_licenses()
               else:
                   from licenses import Licenses
>>  entity_list = self.service.get_licenses()
Module licenses.service:44 in get_licenses
<<          except Exception, inst:
                   msg = "Couldn't connect to licenses service: %s" % inst
                   raise Exception, msg
               try:
                   licenses = loads(response_body)
>>  raise Exception, msg
Exception: Couldn't connect to licenses service: <urlopen error (104, 'Connection reset by peer')>

[thejimmyg]

The licenses service was down, it is back up now. We should be able to cope with this situation better though. Renaming the ticket.

[rgrp]

I'm closing this ticket as a) most systems should install the licenses package (and hence have the licenses locally) and b) licenses service has now moved to s3 so should be very robust (see ticket:973 and ​http://knowledgeforge.net/okfn/tasks/ticket/605)