io.aeron.driver

Interface NameResolver

All Known Implementing Classes:

DefaultNameResolver

public interface NameResolver

Interface to allow resolving a name to an InetAddress.

Method Summary

Modifier and Type	Method and Description
default int	doWork(long nowMs) Perform periodic work for the resolver.
default void	init(CountersReader countersReader, CounterProvider counterProvider) Do post construction initialisation of the name resolver.
default void	init(MediaDriver.Context context) Deprecated. Use init(CountersReader, CounterProvider) instead.
default String	lookup(String name, String uriParamName, boolean isReLookup) Lookup the name and return a string of the form name:port that represents the endpoint or control param of the URI.
InetAddress	resolve(String name, String uriParamName, boolean isReResolution) Resolve a name and return the most up to date InetAddress that represents the name.

Method Detail

resolve

InetAddress resolve(String name,
                    String uriParamName,
                    boolean isReResolution)

Resolve a name and return the most up to date InetAddress that represents the name.

Parameters:

name - to resolve.

uriParamName - that the resolution is for.

isReResolution - true if this is a re-resolution or false if initial resolution.

Returns:

address for the name that most recently represents the name or null if not resolvable currently.

See Also:

CommonContext.ENDPOINT_PARAM_NAME, CommonContext.MDC_CONTROL_PARAM_NAME

lookup

default String lookup(String name,
                      String uriParamName,
                      boolean isReLookup)

Lookup the name and return a string of the form name:port that represents the endpoint or control param of the URI.

Parameters:

name - to lookup

uriParamName - that the lookup is for.

isReLookup - true if this is a re-lookup or true if initial lookup.

Returns:

string in name:port form.

init

@Deprecated
default void init(MediaDriver.Context context)

Deprecated. Use init(CountersReader, CounterProvider) instead.

Do post construction initialisation of the name resolver. Happens during the conductor start lifecycle. Can be used for actions like adding counters.

Parameters:

context - for the media driver that the name resolver is running in.

See Also:

init(CountersReader, CounterProvider)

init

default void init(CountersReader countersReader,
                  CounterProvider counterProvider)

Do post construction initialisation of the name resolver.

Parameters:

countersReader - for finding existing counters.

counterProvider - for adding counters.

doWork

default int doWork(long nowMs)

Perform periodic work for the resolver.

Parameters:

nowMs - current epoch clock time in milliseconds

Returns:

work count