Package 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	Description
static int	DEFAULT_CACHE_SIZE

Constructor Summary

Constructors

Constructor	Description
DnsCache()

Method Summary

Modifier and Type	Method	Description
CachedDnsQueryResult	get(DnsMessage query)	Request a cached dns response.
protected abstract CachedDnsQueryResult	getNormalized(DnsMessage normalizedQuery)
abstract void	offer(DnsMessage query, DnsQueryResult result, DnsName authoritativeZone)
void	put(DnsMessage query, DnsQueryResult result)	Add an an dns answer/response for a given dns question.
protected abstract void	putNormalized(DnsMessage normalizedQuery, DnsQueryResult result)

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(DnsMessage query,
                      DnsQueryResult result)

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.

result - The DNS query result.

putNormalized

protected abstract void putNormalized(DnsMessage normalizedQuery,
                                      DnsQueryResult result)

offer

public abstract void offer(DnsMessage query,
                           DnsQueryResult result,
                           DnsName authoritativeZone)

get

public final CachedDnsQueryResult get(DnsMessage query)

Request a cached dns response.

Parameters:

query - The query message containing a question.

Returns:

The dns message.

getNormalized

protected abstract CachedDnsQueryResult getNormalized(DnsMessage normalizedQuery)