Package io.netty.resolver.dns

Class DnsQueryContextManager

java.lang.Object

io.netty.resolver.dns.DnsQueryContextManager

final class DnsQueryContextManager
extends Object

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
private static final class	DnsQueryContextManager.DnsQueryContextMap

Field Summary

Fields

Modifier and Type	Field	Description
private final Map<InetSocketAddress,DnsQueryContextManager.DnsQueryContextMap>	map	A map whose key is the DNS server address and value is the map of the DNS query ID and its corresponding DnsQueryContext.

Constructor Summary

Constructors

Constructor	Description
DnsQueryContextManager()

Method Summary

Modifier and Type	Method	Description
(package private) int	add(InetSocketAddress nameServerAddr, DnsQueryContext qCtx)	Add DnsQueryContext to the context manager and return the ID that should be used for the query.
(package private) DnsQueryContext	get(InetSocketAddress nameServerAddr, int id)	Return the DnsQueryContext for the given InetSocketAddress and id or null if none could be found.
private DnsQueryContextManager.DnsQueryContextMap	getContextMap(InetSocketAddress nameServerAddr)
private DnsQueryContextManager.DnsQueryContextMap	getOrCreateContextMap(InetSocketAddress nameServerAddr)
(package private) DnsQueryContext	remove(InetSocketAddress nameServerAddr, int id)	Remove the DnsQueryContext for the given InetSocketAddress and id or null if none could be found.
private static Inet6Address	toCompactAddress(Inet4Address a4)
private static Inet4Address	toIPv4Address(Inet6Address a6)

Methods inherited from class java.lang.Object

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

Field Details

map

private final Map<InetSocketAddress,DnsQueryContextManager.DnsQueryContextMap> map

A map whose key is the DNS server address and value is the map of the DNS query ID and its corresponding DnsQueryContext.

Constructor Details

DnsQueryContextManager

DnsQueryContextManager()

Method Details

add

int add(InetSocketAddress nameServerAddr,
 DnsQueryContext qCtx)

Add DnsQueryContext to the context manager and return the ID that should be used for the query. This method will return -1 if an ID could not be generated and the context was not stored.

Parameters:

nameServerAddr - The InetSocketAddress of the nameserver to query.

qCtx - The

invalid @link

{@link {@link

DnsQueryContext} to store.

Returns:

the ID that should be used or -1 if none could be generated.

get

DnsQueryContext get(InetSocketAddress nameServerAddr,
 int id)

Return the DnsQueryContext for the given InetSocketAddress and id or null if none could be found.

Parameters:

nameServerAddr - The InetSocketAddress of the nameserver.

id - The id that identifies the DnsQueryContext and was used for the query.

Returns:

The context or null if none could be found.

remove

DnsQueryContext remove(InetSocketAddress nameServerAddr,
 int id)

Remove the DnsQueryContext for the given InetSocketAddress and id or null if none could be found.

Parameters:

nameServerAddr - The InetSocketAddress of the nameserver.

id - The id that identifies the DnsQueryContext and was used for the query.

Returns:

The context or null if none could be removed.

getContextMap

private DnsQueryContextManager.DnsQueryContextMap getContextMap(InetSocketAddress nameServerAddr)

getOrCreateContextMap

private DnsQueryContextManager.DnsQueryContextMap getOrCreateContextMap(InetSocketAddress nameServerAddr)

toCompactAddress

private static Inet6Address toCompactAddress(Inet4Address a4)

toIPv4Address

private static Inet4Address toIPv4Address(Inet6Address a6)