Package io.debezium.testing.testcontainers.util

Class FakeDns

java.lang.Object

io.debezium.testing.testcontainers.util.FakeDns

public class FakeDns
extends Object

Fake DNS resolver which allows tests to work well with testcontainer under Docker Desktop Adaptation of https://github.com/CorfuDB/CorfuDB/blob/master/it/src/main/java/org/corfudb/universe/universe/docker/FakeDns.java

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
private class	FakeDns.NameServiceListener	NameServiceListener with a NameService implementation to fallback to.

Field Summary

Fields

Modifier and Type	Field	Description
private final Map<String,InetAddress>	forwardResolutions
private boolean	installed	whether the fake resolver has been installed
private static final FakeDns	instance
private static final org.slf4j.Logger	LOGGER
private Object	originalNameService

Constructor Summary

Constructors

Modifier	Constructor	Description
private	FakeDns()

Method Summary

Modifier and Type	Method	Description
void	addResolution(String hostname, InetAddress ip)
static FakeDns	getInstance()
FakeDns	install()	Install the fake DNS resolver into the Java runtime.
private Object	installDns()
boolean	isInstalled()
static <T extends Throwable> void	propagateIfPossible(Throwable throwable, Class<T> declaredType)
void	removeResolution(String hostname, InetAddress ip)
FakeDns	restore()	Restore default DNS resolver in Java runtime.
private void	restoreDns(Object nameService)

Methods inherited from class java.lang.Object

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

Field Details

LOGGER

private static final org.slf4j.Logger LOGGER

instance

private static final FakeDns instance

forwardResolutions

private final Map<String,InetAddress> forwardResolutions

originalNameService

private Object originalNameService

installed

private boolean installed

whether the fake resolver has been installed

Constructor Details

FakeDns

private FakeDns()

Method Details

getInstance

public static FakeDns getInstance()

addResolution

public void addResolution(String hostname,
 InetAddress ip)

removeResolution

public void removeResolution(String hostname,
 InetAddress ip)

isInstalled

public boolean isInstalled()

install

public FakeDns install()

Install the fake DNS resolver into the Java runtime.

restore

public FakeDns restore()

Restore default DNS resolver in Java runtime.

installDns

private Object installDns()
                   throws NoSuchMethodException,
IllegalAccessException,
InvocationTargetException,
ClassNotFoundException,
NoSuchFieldException

Throws:

NoSuchMethodException

IllegalAccessException

InvocationTargetException

ClassNotFoundException

NoSuchFieldException

restoreDns

private void restoreDns(Object nameService)
                 throws IllegalAccessException,
NoSuchFieldException

Throws:

IllegalAccessException

NoSuchFieldException

propagateIfPossible

public static <T extends Throwable> void propagateIfPossible(Throwable throwable,
 Class<T> declaredType)
                                                      throws T

Throws:

T extends Throwable