class twisted.names.cache.CacheResolver(common.ResolverBase): (source)
A resolver that serves records from a local, memory cache.
| Instance Variable | cache | Undocumented |
| Method | __init__ | Undocumented |
| Instance Variable | verbose | Undocumented |
| Instance Variable | cancel | Undocumented |
| Method | __setstate__ | Undocumented |
| Instance Variable | __dict__ | Undocumented |
| Method | __getstate__ | Undocumented |
| Method | lookupAllRecords | Perform an ALL_RECORD lookup. |
| Method | cacheResult | Cache a DNS entry. |
| Method | clearEntry | Undocumented |
| Instance Variable | _reactor | A provider of interfaces.IReactorTime. |
| Method | _lookup | Undocumented |
Inherited from ResolverBase:
| Instance Variable | typeToMethod | Undocumented |
| Method | exceptionForCode | Convert a response code (one of the possible values of dns.Message.rCode to an exception instance representing it. |
| Method | query | Dispatch query to the method which can handle its type. |
| Method | lookupAddress | Perform an A record lookup. |
| Method | lookupIPV6Address | Perform an AAAA record lookup. |
| Method | lookupAddress6 | Perform an A6 record lookup. |
| Method | lookupMailExchange | Perform an MX record lookup. |
| Method | lookupNameservers | Perform an NS record lookup. |
| Method | lookupCanonicalName | Perform a CNAME record lookup. |
| Method | lookupMailBox | Perform an MB record lookup. |
| Method | lookupMailGroup | Perform an MG record lookup. |
| Method | lookupMailRename | Perform an MR record lookup. |
| Method | lookupPointer | Perform a PTR record lookup. |
| Method | lookupAuthority | Perform an SOA record lookup. |
| Method | lookupNull | Perform a NULL record lookup. |
| Method | lookupWellKnownServices | Perform a WKS record lookup. |
| Method | lookupService | Perform an SRV record lookup. |
| Method | lookupHostInfo | Perform a HINFO record lookup. |
| Method | lookupMailboxInfo | Perform an MINFO record lookup. |
| Method | lookupText | Perform a TXT record lookup. |
| Method | lookupSenderPolicy | Perform a SPF record lookup. |
| Method | lookupResponsibility | Perform an RP record lookup. |
| Method | lookupAFSDatabase | Perform an AFSDB record lookup. |
| Method | lookupZone | Perform an AXFR record lookup. |
| Method | lookupNamingAuthorityPointer | Perform a NAPTR record lookup. |
| Method | getHostByName | Resolve the domain name name into an IP address. |
| 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 |
| Method | _cbRecords | Undocumented |
Perform an ALL_RECORD lookup.
| Parameters | name | DNS name to resolve. |
| timeout | Number 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. | |
Cache a DNS entry.
| Parameters | query | a dns.Query instance. |
| payload | a 3-tuple of lists of dns.RRHeader records, the matching result of the query (answers, authority and additional). | |
| cacheTime | The 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. |