Package io.pravega.common.function

Class Callbacks

java.lang.Object

io.pravega.common.function.Callbacks

public final class Callbacks
extends java.lang.Object

Misc methods that can be used as callbacks.

Constructor Summary

Constructors

Constructor	Description
Callbacks()

Method Summary

Modifier and Type	Method	Description
static <T> void	doNothing(T ignored)	Empty consumer.
static <T> T	identity(T input)	Identity Function.
static void	invokeSafely(RunnableWithException runnable, java.util.function.Consumer<java.lang.Throwable> failureHandler)	Invokes the given RunnableWithException and catches any exceptions that it may throw.
static <T1,T2> void	invokeSafely(java.util.function.BiConsumer<T1,T2> consumer, T1 argument1, T2 argument2, java.util.function.Consumer<java.lang.Throwable> failureHandler)	Invokes the given Consumer with the given argument, and catches any exceptions that it may throw.
static <T> void	invokeSafely(java.util.function.Consumer<T> consumer, T argument, java.util.function.Consumer<java.lang.Throwable> failureHandler)	Invokes the given Consumer with the given argument, and catches any exceptions that it may throw.

Methods inherited from class java.lang.Object

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

Constructor Detail

Callbacks

public Callbacks()

Method Detail

doNothing

public static <T> void doNothing(T ignored)

Empty consumer. Does nothing.

Type Parameters:

T - Return type. Ignored.

Parameters:

ignored - Ignored argument.

identity

public static <T> T identity(T input)

Identity Function.

Type Parameters:

T - Type of the input.

Parameters:

input - The input.

Returns:

The input.

invokeSafely

public static <T> void invokeSafely(java.util.function.Consumer<T> consumer,
                                    T argument,
                                    java.util.function.Consumer<java.lang.Throwable> failureHandler)

Invokes the given Consumer with the given argument, and catches any exceptions that it may throw.

Type Parameters:

T - The type of the argument.

Parameters:

consumer - The consumer to invoke.

argument - The argument to pass to the consumer.

failureHandler - An optional callback to invoke if the consumer threw any exceptions.

Throws:

java.lang.NullPointerException - If the consumer is null.

invokeSafely

public static void invokeSafely(RunnableWithException runnable,
                                java.util.function.Consumer<java.lang.Throwable> failureHandler)

Invokes the given RunnableWithException and catches any exceptions that it may throw.

Parameters:

runnable - The RunnableWithException to invoke.

failureHandler - An optional callback to invoke if the RunnableWithException threw any exceptions.

invokeSafely

public static <T1,T2> void invokeSafely(java.util.function.BiConsumer<T1,T2> consumer,
                                              T1 argument1,
                                              T2 argument2,
                                              java.util.function.Consumer<java.lang.Throwable> failureHandler)

Invokes the given Consumer with the given argument, and catches any exceptions that it may throw.

Type Parameters:

T1 - The type of the first argument.

T2 - The type of the second argument.

Parameters:

consumer - The consumer to invoke.

argument1 - The first argument to pass to the consumer.

argument2 - The second argument to pass to the consumer.

failureHandler - An optional callback to invoke if the consumer threw any exceptions.

Throws:

java.lang.NullPointerException - If the consumer is null.