def _rule_args_to_dict(self, context, to_port=None, from_port=None,
                                  parent_group_id=None, ip_protocol=None,
                                  cidr=None, group_id=None):
        values = {}

        if group_id:
            try:
                parent_group_id = int(parent_group_id)
                group_id = int(group_id)
            except ValueError:
                msg = _("Parent or group id is not integer")
                raise exception.InvalidInput(reason=msg)

            if parent_group_id == group_id:
                msg = _("Parent group id and group id cannot be same")
                raise exception.InvalidInput(reason=msg)

            values['group_id'] = group_id
            #check if groupId exists
            db.security_group_get(context, group_id)
        elif cidr:
            # If this fails, it throws an exception. This is what we want.
            try:
                cidr = urllib.unquote(cidr).decode()
                netaddr.IPNetwork(cidr)
            except Exception:
                raise exception.InvalidCidr(cidr=cidr)
            values['cidr'] = cidr
        else:
            values['cidr'] = '0.0.0.0/0'

        if ip_protocol and from_port and to_port:

            try:
                from_port = int(from_port)
                to_port = int(to_port)
            except __HOLE__:
                raise exception.InvalidPortRange(from_port=from_port,
                                                 to_port=to_port)
            ip_protocol = str(ip_protocol)
            if ip_protocol.upper() not in ['TCP', 'UDP', 'ICMP']:
                raise exception.InvalidIpProtocol(protocol=ip_protocol)
            if ((min(from_port, to_port) < -1) or
                       (max(from_port, to_port) > 65535)):
                raise exception.InvalidPortRange(from_port=from_port,
                                                 to_port=to_port)

            values['protocol'] = ip_protocol
            values['from_port'] = from_port
            values['to_port'] = to_port
        else:
            # If cidr based filtering, protocol and ports are mandatory
            if 'cidr' in values:
                return None

        return values
dataset/ETHPy150Open nii-cloud/dodai-compute/nova/api/openstack/contrib/security_groups.py/SecurityGroupRulesController._rule_args_to_dict