Method get_rdataset

dns/node.py:206–241

Get an rdataset matching the specified properties in the current node. None is returned if an rdataset of the specified type and class does not exist and *create* is not ``True``. *rdclass*, an ``int``, the class of the rdataset. *rdtype*, an ``int``, the t

(
        self,
        rdclass: dns.rdataclass.RdataClass,
        rdtype: dns.rdatatype.RdataType,
        covers: dns.rdatatype.RdataType = dns.rdatatype.NONE,
        create: bool = False,
    )

        return rds

    def get_rdataset(
        self,
        rdclass: dns.rdataclass.RdataClass,
        rdtype: dns.rdatatype.RdataType,
        covers: dns.rdatatype.RdataType = dns.rdatatype.NONE,
        create: bool = False,
    ) -> dns.rdataset.Rdataset | None:
        """Get an rdataset matching the specified properties in the
        current node.

        None is returned if an rdataset of the specified type and
        class does not exist and *create* is not ``True``.

        *rdclass*, an ``int``, the class of the rdataset.

        *rdtype*, an ``int``, the type of the rdataset.

        *covers*, an ``int``, the covered type.  Usually this value is
        dns.rdatatype.NONE, but if the rdtype is dns.rdatatype.SIG or
        dns.rdatatype.RRSIG, then the covers value will be the rdata
        type the SIG/RRSIG covers.  The library treats the SIG and RRSIG
        types as if they were a family of
        types, e.g. RRSIG(A), RRSIG(NS), RRSIG(SOA).  This makes RRSIGs much
        easier to work with than if RRSIGs covering different rdata
        types were aggregated into a single RRSIG rdataset.

        *create*, a ``bool``.  If True, create the rdataset if it is not found.

        Returns a ``dns.rdataset.Rdataset`` or ``None``.
        """

        try:
            rds = self.find_rdataset(rdclass, rdtype, covers, create)
        except KeyError:
            rds = None
        return rds

    def delete_rdataset(
        self,