org.minidns

Class DNSCache

java.lang.Object

org.minidns.DNSCache

Direct Known Subclasses:

LRUCache

public abstract class DNSCache
extends java.lang.Object

Cache for DNS Entries. Implementations must be thread safe.

Field Summary

Fields

Modifier and Type	Field and Description
static int	DEFAULT_CACHE_SIZE

Constructor Summary

Constructors

Constructor and Description
DNSCache()

Method Summary

Modifier and Type	Method and Description
org.minidns.dnsmessage.DNSMessage	get(org.minidns.dnsmessage.DNSMessage query) Request a cached dns response.
protected abstract org.minidns.dnsmessage.DNSMessage	getNormalized(org.minidns.dnsmessage.DNSMessage normalizedQuery)
abstract void	offer(org.minidns.dnsmessage.DNSMessage query, org.minidns.dnsmessage.DNSMessage reply, org.minidns.dnsname.DNSName authoritativeZone)
void	put(org.minidns.dnsmessage.DNSMessage query, org.minidns.dnsmessage.DNSMessage message) Add an an dns answer/response for a given dns question.
protected abstract void	putNormalized(org.minidns.dnsmessage.DNSMessage normalizedQuery, org.minidns.dnsmessage.DNSMessage reply)

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

DEFAULT_CACHE_SIZE

public static final int DEFAULT_CACHE_SIZE

See Also:

Constant Field Values

Constructor Detail

DNSCache

public DNSCache()

Method Detail

put

public final void put(org.minidns.dnsmessage.DNSMessage query,
                      org.minidns.dnsmessage.DNSMessage message)

Add an an dns answer/response for a given dns question. Implementations should honor the ttl / receive timestamp.

Parameters:

query - The query message containing a question.

message - The dns message.

putNormalized

protected abstract void putNormalized(org.minidns.dnsmessage.DNSMessage normalizedQuery,
                                      org.minidns.dnsmessage.DNSMessage reply)

offer

public abstract void offer(org.minidns.dnsmessage.DNSMessage query,
                           org.minidns.dnsmessage.DNSMessage reply,
                           org.minidns.dnsname.DNSName authoritativeZone)

get

public final org.minidns.dnsmessage.DNSMessage get(org.minidns.dnsmessage.DNSMessage query)

Request a cached dns response.

Parameters:

query - The query message containing a question.

Returns:

The dns message.

getNormalized

protected abstract org.minidns.dnsmessage.DNSMessage getNormalized(org.minidns.dnsmessage.DNSMessage normalizedQuery)