When using authorization in FUSE ESB there is no way to retrieve any logging of the authorization function as there are no logging statements in the code. However there should be some. Unless one connects with a debugger to FUSE ESB, there is no way of figuring out if authorization function is called. In the case of authorization failing, it correctly raises exceptions, but in case it succeeds, one can not get any further logging.
Please add some useful logging statements in this area.