def load(module_name, name):
log.info('application', "Importing application %s from module %s",
name, module_name)
module = sys.modules.get(module_name)
if module:
log.warning('application',
"Application module %s has already been loaded. ",
module_name)
else:
module = reflect.named_module(module_name)
application = getattr(module, name, None)
if application is None:
raise ValueError('Module %s has no attribute %s' % (module_name, name))
if not IApplication.providedBy(application):
raise ValueError('Variable %s.%s should provide IApplication interface'
% (module_name, name))
try:
application.load()
except Exception as e:
error.handle_exception(
'application', e, 'Error loading application: %s',
application.name)
application.unload()
raise
else:
get_application_registry().register(application)
log.info('application', "Loading application %s complete.", name)
def do_import(self, iter, force=False):
canonical_name, auto = self._parse_row(iter)
if force or auto:
try:
o = reflect.named_object(canonical_name)
if IApplication.providedBy(o):
o.load()
elif isinstance(o, types.ModuleType):
reflect.named_module(canonical_name)
else:
raise TypeError("Uknown type of canonical name target: "
"%r -> %s" % (canonical_name, type(o)))
except Exception, e:
error.handle_exception('imports', e, 'Error importing')
