twisted.names.cache.CacheResolver

class documentation

class CacheResolver(common.ResolverBase): (source)

Constructor: CacheResolver(cache, verbose, reactor)

View In Hierarchy

A resolver that serves records from a local, memory cache.

Method __getstate__ Undocumented
Method __init__ Undocumented
Method __setstate__ Undocumented
Method cacheResult Cache a DNS entry.
Method clearEntry Undocumented
Method lookupAllRecords Perform an ALL_RECORD lookup.
Instance Variable __dict__ Undocumented
Instance Variable cache Undocumented
Instance Variable cancel Undocumented
Instance Variable verbose Undocumented
Method _lookup Undocumented
Instance Variable _reactor A provider of interfaces.IReactorTime.

Inherited from ResolverBase:

Method exceptionForCode Convert a response code (one of the possible values of dns.Message.rCode to an exception instance representing it.
Method getHostByName Resolve the domain name name into an IP address.
Method lookupAddress Perform an A record lookup.
Method lookupAddress6 Perform an A6 record lookup.
Method lookupAFSDatabase Perform an AFSDB record lookup.
Method lookupAuthority Perform an SOA record lookup.
Method lookupCanonicalName Perform a CNAME record lookup.
Method lookupHostInfo Perform a HINFO record lookup.
Method lookupIPV6Address Perform an AAAA record lookup.
Method lookupMailBox Perform an MB record lookup.
Method lookupMailboxInfo Perform an MINFO record lookup.
Method lookupMailExchange Perform an MX record lookup.
Method lookupMailGroup Perform an MG record lookup.
Method lookupMailRename Perform an MR record lookup.
Method lookupNameservers Perform an NS record lookup.
Method lookupNamingAuthorityPointer Perform a NAPTR record lookup.
Method lookupNull Perform a NULL record lookup.
Method lookupPointer Perform a PTR record lookup.
Method lookupResponsibility Perform an RP record lookup.
Method lookupSenderPolicy Perform a SPF record lookup.
Method lookupService Perform an SRV record lookup.
Method lookupText Perform a TXT record lookup.
Method lookupWellKnownServices Perform a WKS record lookup.
Method lookupZone Perform an AXFR record lookup.
Method query Dispatch query to the method which can handle its type.
Instance Variable typeToMethod Undocumented
Method _cbRecords Undocumented
Class Variable _errormap A dict mapping DNS protocol failure response codes to exception classes which will be used to represent those failures.
Class Variable _log Undocumented
def __getstate__(self): (source)

Undocumented

def __init__(self, cache=None, verbose=0, reactor=None): (source)
overrides twisted.names.common.ResolverBase.__init__

Undocumented

def __setstate__(self, state): (source)

Undocumented

def cacheResult(self, query, payload, cacheTime=None): (source)

Cache a DNS entry.

Parameters
querya dns.Query instance.
payloada 3-tuple of lists of dns.RRHeader records, the matching result of the query (answers, authority and additional).
cacheTimeThe time (seconds since epoch) at which the entry is considered to have been added to the cache. If None is given, the current time is used.
def clearEntry(self, query): (source)

Undocumented

def lookupAllRecords(self, name, timeout=None): (source)
from twisted.internet.interfaces.IResolver
overrides twisted.names.common.ResolverBase.lookupAllRecords

Perform an ALL_RECORD lookup.

Parameters
nameDNS name to resolve.
timeoutNumber of seconds after which to reissue the query. When the last timeout expires, the query is considered failed.
Returns
A Deferred which fires with a three-tuple of lists of twisted.names.dns.RRHeader instances. The first element of the tuple gives answers. The second element of the tuple gives authorities. The third element of the tuple gives additional information. The Deferred may instead fail with one of the exceptions defined in twisted.names.error or with NotImplementedError.
__dict__ = (source)

Undocumented

cache: dict = (source)

Undocumented

cancel: dict = (source)

Undocumented

verbose = (source)

Undocumented

def _lookup(self, name, cls, type, timeout): (source)
overrides twisted.names.common.ResolverBase._lookup

Undocumented

_reactor = (source)