Class AddressResolverGroup<T extends java.net.SocketAddress>

java.lang.Object

io.netty.resolver.AddressResolverGroup<T>

All Implemented Interfaces:

java.io.Closeable, java.lang.AutoCloseable

Direct Known Subclasses:

DefaultAddressResolverGroup, DnsAddressResolverGroup, NoopAddressResolverGroup

public abstract class AddressResolverGroup<T extends java.net.SocketAddress>
extends java.lang.Object
implements java.io.Closeable

Creates and manages NameResolvers so that each EventExecutor has its own resolver instance.

Field Summary

Fields

Modifier and Type	Field	Description
private final java.util.Map<EventExecutor, GenericFutureListener<Future<java.lang.Object>>>	executorTerminationListeners
private static final InternalLogger	logger
private final java.util.Map<EventExecutor, AddressResolver<T>>	resolvers	Note that we do not use a ConcurrentMap here because it is usually expensive to instantiate a resolver.

Constructor Summary

Constructors

Modifier	Constructor	Description
protected	AddressResolverGroup()

Method Summary

Modifier and Type	Method	Description
void	close()	Closes all NameResolvers created by this group.
AddressResolver<T>	getResolver(EventExecutor executor)	Returns the AddressResolver associated with the specified EventExecutor.
protected abstract AddressResolver<T>	newResolver(EventExecutor executor)	Invoked by getResolver(EventExecutor) to create a new AddressResolver.

Methods inherited from class java.lang.Object

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

Field Details

logger

private static final InternalLogger logger

resolvers

private final java.util.Map<EventExecutor, AddressResolver<T extends java.net.SocketAddress>> resolvers

Note that we do not use a ConcurrentMap here because it is usually expensive to instantiate a resolver.

executorTerminationListeners

private final java.util.Map<EventExecutor, GenericFutureListener<Future<java.lang.Object>>> executorTerminationListeners

Constructor Details

AddressResolverGroup

protected AddressResolverGroup()

Method Details

getResolver

public AddressResolver<T> getResolver(EventExecutor executor)

Returns the AddressResolver associated with the specified EventExecutor. If there's no associated resolver found, this method creates and returns a new resolver instance created by newResolver(EventExecutor) so that the new resolver is reused on another #getResolver(EventExecutor) call with the same EventExecutor.

newResolver

protected abstract AddressResolver<T> newResolver(EventExecutor executor)
                                           throws java.lang.Exception

Invoked by getResolver(EventExecutor) to create a new AddressResolver.

Throws:

java.lang.Exception

close

public void close()

Closes all NameResolvers created by this group.

Specified by:

close in interface java.lang.AutoCloseable

Specified by:

close in interface java.io.Closeable