Python dns.rdataset方法代码示例

# 需要导入模块: import dns [as 别名]
# 或者: from dns import rdataset [as 别名]
def get_rdataset(self, rdclass, rdtype, covers=dns.rdatatype.NONE,
                     create=False):
        """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 I{create} is not True.

        @param rdclass: The class of the rdataset
        @type rdclass: int
        @param rdtype: The type of the rdataset
        @type rdtype: int
        @param covers: The covered type.
        @type covers: int
        @param create: If True, create the rdataset if it is not found.
        @type create: bool
        @rtype: dns.rdataset.Rdataset object or None
        """

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

# 需要导入模块: import dns [as 别名]
# 或者: from dns import rdataset [as 别名]
def delete_rdataset(self, rdclass, rdtype, covers=dns.rdatatype.NONE):
        """Delete the rdataset matching the specified properties in the
        current node.

        If a matching rdataset does not exist, it is not an error.

        @param rdclass: The class of the rdataset
        @type rdclass: int
        @param rdtype: The type of the rdataset
        @type rdtype: int
        @param covers: The covered type.
        @type covers: int
        """

        rds = self.get_rdataset(rdclass, rdtype, covers)
        if rds is not None:
            self.rdatasets.remove(rds) 

# 需要导入模块: import dns [as 别名]
# 或者: from dns import rdataset [as 别名]
def delete_rdataset(self, rdclass, rdtype, covers=dns.rdatatype.NONE):
        """Delete the rdataset matching the specified properties in the
        current node.

        If a matching rdataset does not exist, it is not an error.

        @param rdclass: The class of the rdataset
        @type rdclass: int
        @param rdtype: The type of the rdataset
        @type rdtype: int
        @param covers: The covered type.
        @type covers: int
        """

        rds = self.get_rdataset(rdclass, rdtype, covers)
        if not rds is None:
            self.rdatasets.remove(rds) 

# 需要导入模块: import dns [as 别名]
# 或者: from dns import rdataset [as 别名]
def _add(self, replace, section, name, *args):
        """Add records.  The first argument is the replace mode.  If
        false, RRs are added to an existing RRset; if true, the RRset
        is replaced with the specified contents.  The second
        argument is the section to add to.  The third argument
        is always a name.  The other arguments can be:

                - rdataset...

                - ttl, rdata...

                - ttl, rdtype, string..."""

        if isinstance(name, string_types):
            name = dns.name.from_text(name, None)
        if isinstance(args[0], dns.rdataset.Rdataset):
            for rds in args:
                if replace:
                    self.delete(name, rds.rdtype)
                for rd in rds:
                    self._add_rr(name, rds.ttl, rd, section=section)
        else:
            args = list(args)
            ttl = int(args.pop(0))
            if isinstance(args[0], dns.rdata.Rdata):
                if replace:
                    self.delete(name, args[0].rdtype)
                for rd in args:
                    self._add_rr(name, ttl, rd, section=section)
            else:
                rdtype = args.pop(0)
                if isinstance(rdtype, string_types):
                    rdtype = dns.rdatatype.from_text(rdtype)
                if replace:
                    self.delete(name, rdtype)
                for s in args:
                    rd = dns.rdata.from_text(self.zone_rdclass, rdtype, s,
                                             self.origin)
                    self._add_rr(name, ttl, rd, section=section) 

# 需要导入模块: import dns [as 别名]
# 或者: from dns import rdataset [as 别名]
def add(self, name, *args):
        """Add records.  The first argument is always a name.  The other
        arguments can be:

                - rdataset...

                - ttl, rdata...

                - ttl, rdtype, string..."""
        self._add(False, self.authority, name, *args) 

# 需要导入模块: import dns [as 别名]
# 或者: from dns import rdataset [as 别名]
def replace(self, name, *args):
        """Replace records.  The first argument is always a name.  The other
        arguments can be:

                - rdataset...

                - ttl, rdata...

                - ttl, rdtype, string...

        Note that if you want to replace the entire node, you should do
        a delete of the name followed by one or more calls to add."""

        self._add(True, self.authority, name, *args) 

# 需要导入模块: import dns [as 别名]
# 或者: from dns import rdataset [as 别名]
def present(self, name, *args):
        """Require that an owner name (and optionally an rdata type,
        or specific rdataset) exists as a prerequisite to the
        execution of the update.  The first argument is always a name.
        The other arguments can be:

                - rdataset...

                - rdata...

                - rdtype, string..."""

        if isinstance(name, string_types):
            name = dns.name.from_text(name, None)
        if len(args) == 0:
            self.find_rrset(self.answer, name,
                            dns.rdataclass.ANY, dns.rdatatype.ANY,
                            dns.rdatatype.NONE, None,
                            True, True)
        elif isinstance(args[0], dns.rdataset.Rdataset) or \
            isinstance(args[0], dns.rdata.Rdata) or \
                len(args) > 1:
            if not isinstance(args[0], dns.rdataset.Rdataset):
                # Add a 0 TTL
                args = list(args)
                args.insert(0, 0)
            self._add(False, self.answer, name, *args)
        else:
            rdtype = args[0]
            if isinstance(rdtype, string_types):
                rdtype = dns.rdatatype.from_text(rdtype)
            self.find_rrset(self.answer, name,
                            dns.rdataclass.ANY, rdtype,
                            dns.rdatatype.NONE, None,
                            True, True) 

# 需要导入模块: import dns [as 别名]
# 或者: from dns import rdataset [as 别名]
def find_rdataset(self, rdclass, rdtype, covers=dns.rdatatype.NONE,
                      create=False):
        """Find an rdataset matching the specified properties in the
        current node.

        @param rdclass: The class of the rdataset
        @type rdclass: int
        @param rdtype: The type of the rdataset
        @type rdtype: int
        @param covers: 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.
        @type covers: int
        @param create: If True, create the rdataset if it is not found.
        @type create: bool
        @raises KeyError: An rdataset of the desired type and class does
        not exist and I{create} is not True.
        @rtype: dns.rdataset.Rdataset object
        """

        for rds in self.rdatasets:
            if rds.match(rdclass, rdtype, covers):
                return rds
        if not create:
            raise KeyError
        rds = dns.rdataset.Rdataset(rdclass, rdtype)
        self.rdatasets.append(rds)
        return rds 

# 需要导入模块: import dns [as 别名]
# 或者: from dns import rdataset [as 别名]
def replace_rdataset(self, replacement):
        """Replace an rdataset.

        It is not an error if there is no rdataset matching I{replacement}.

        Ownership of the I{replacement} object is transferred to the node;
        in other words, this method does not store a copy of I{replacement}
        at the node, it stores I{replacement} itself.
        """

        if not isinstance(replacement, dns.rdataset.Rdataset):
            raise ValueError('replacement is not an rdataset')
        self.delete_rdataset(replacement.rdclass, replacement.rdtype,
                             replacement.covers)
        self.rdatasets.append(replacement) 

# 需要导入模块: import dns [as 别名]
# 或者: from dns import rdataset [as 别名]
def __eq__(self, other):
        """Two RRsets are equal if they have the same name and the same
        rdataset

        @rtype: bool"""
        if not isinstance(other, RRset):
            return False
        if self.name != other.name:
            return False
        return super(RRset, self).__eq__(other) 

# 需要导入模块: import dns [as 别名]
# 或者: from dns import rdataset [as 别名]
def _add(self, replace, section, name, *args):
        """Add records.  The first argument is the replace mode.  If
        false, RRs are added to an existing RRset; if true, the RRset
        is replaced with the specified contents.  The second
        argument is the section to add to.  The third argument
        is always a name.  The other arguments can be:

                - rdataset...

                - ttl, rdata...

                - ttl, rdtype, string..."""

        if isinstance(name, (str, unicode)):
            name = dns.name.from_text(name, None)
        if isinstance(args[0], dns.rdataset.Rdataset):
            for rds in args:
                if replace:
                    self.delete(name, rds.rdtype)
                for rd in rds:
                    self._add_rr(name, rds.ttl, rd, section=section)
        else:
            args = list(args)
            ttl = int(args.pop(0))
            if isinstance(args[0], dns.rdata.Rdata):
                if replace:
                    self.delete(name, args[0].rdtype)
                for rd in args:
                    self._add_rr(name, ttl, rd, section=section)
            else:
                rdtype = args.pop(0)
                if isinstance(rdtype, str):
                    rdtype = dns.rdatatype.from_text(rdtype)
                if replace:
                    self.delete(name, rdtype)
                for s in args:
                    rd = dns.rdata.from_text(self.zone_rdclass, rdtype, s,
                                             self.origin)
                    self._add_rr(name, ttl, rd, section=section) 

# 需要导入模块: import dns [as 别名]
# 或者: from dns import rdataset [as 别名]
def present(self, name, *args):
        """Require that an owner name (and optionally an rdata type,
        or specific rdataset) exists as a prerequisite to the
        execution of the update.  The first argument is always a name.
        The other arguments can be:

                - rdataset...

                - rdata...

                - rdtype, string..."""

        if isinstance(name, (str, unicode)):
            name = dns.name.from_text(name, None)
        if len(args) == 0:
            rrset = self.find_rrset(self.answer, name,
                                    dns.rdataclass.ANY, dns.rdatatype.ANY,
                                    dns.rdatatype.NONE, None,
                                    True, True)
        elif isinstance(args[0], dns.rdataset.Rdataset) or \
             isinstance(args[0], dns.rdata.Rdata) or \
             len(args) > 1:
            if not isinstance(args[0], dns.rdataset.Rdataset):
                # Add a 0 TTL
                args = list(args)
                args.insert(0, 0)
            self._add(False, self.answer, name, *args)
        else:
            rdtype = args[0]
            if isinstance(rdtype, (str, unicode)):
                rdtype = dns.rdatatype.from_text(rdtype)
            rrset = self.find_rrset(self.answer, name,
                                    dns.rdataclass.ANY, rdtype,
                                    dns.rdatatype.NONE, None,
                                    True, True) 

# 需要导入模块: import dns [as 别名]
# 或者: from dns import rdataset [as 别名]
def replace_rdataset(self, replacement):
        """Replace an rdataset.

        It is not an error if there is no rdataset matching I{replacement}.

        Ownership of the I{replacement} object is transferred to the node;
        in other words, this method does not store a copy of I{replacement}
        at the node, it stores I{replacement} itself.
        """

        if not isinstance(replacement, dns.rdataset.Rdataset):
            raise ValueError, 'replacement is not an rdataset'
        self.delete_rdataset(replacement.rdclass, replacement.rdtype,
                             replacement.covers)
        self.rdatasets.append(replacement)