Log a rejected operation

def log_reject( self, block_id, vtxindex, op, op_data ):
        """
        Log a rejected operation
        """

        debug_op = self.sanitize_op( op_data )
        if 'history' in debug_op:
            del debug_op['history']

        log.debug("REJECT %s at (%s, %s) data: %s", op_get_opcode_name( op ), block_id, vtxindex,
                ", ".join( ["%s='%s'" % (k, debug_op[k]) for k in sorted(debug_op.keys())] ))

        return