org.apache.cassandra.utils

Class Throwables

java.lang.Object

org.apache.cassandra.utils.Throwables

public final class Throwables
extends java.lang.Object

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static interface	Throwables.DiscreteAction<E extends java.lang.Exception>
static class	Throwables.FileOpType

Constructor Summary

Constructors

Constructor and Description
Throwables()

Method Summary

Modifier and Type	Method and Description
static boolean	anyCauseMatches(java.lang.Throwable t, java.util.function.Predicate<java.lang.Throwable> cause)
static java.lang.RuntimeException	cleaned(java.lang.Throwable t) A shortcut for unchecked(unwrapped(t)).
static java.lang.Throwable	close(java.lang.Throwable accumulate, java.lang.Iterable<? extends java.lang.AutoCloseable> closeables)
static java.util.Optional<java.io.IOException>	extractIOExceptionCause(java.lang.Throwable t)
static <T extends java.lang.Throwable> boolean	failIfCanCast(java.lang.Throwable fail, java.lang.Class<T> checked)
static boolean	isCausedBy(java.lang.Throwable t, java.util.function.Predicate<java.lang.Throwable> cause)
static void	maybeFail(java.lang.Throwable fail)
static <T extends java.lang.Throwable> void	maybeFail(java.lang.Throwable fail, java.lang.Class<T> checked)
static <E extends java.lang.Exception> void	maybeFail(Throwables.DiscreteAction<? extends E>... actions)
static <T extends java.lang.Throwable> T	merge(T existingFail, T newFail)
static void	perform(File against, Throwables.FileOpType opType, Throwables.DiscreteAction<? extends java.io.IOException>... actions)
static <E extends java.lang.Exception> void	perform(java.util.stream.Stream<? extends Throwables.DiscreteAction<? extends E>> stream, Throwables.DiscreteAction<? extends E>... extra)
static <E extends java.lang.Exception> void	perform(java.util.stream.Stream<Throwables.DiscreteAction<? extends E>> actions)
static void	perform(java.lang.String filePath, Throwables.FileOpType opType, Throwables.DiscreteAction<? extends java.io.IOException>... actions)
static java.lang.Throwable	perform(java.lang.Throwable accumulate, java.util.Iterator<? extends Throwables.DiscreteAction<?>> actions)
static <E extends java.lang.Exception> void	perform(Throwables.DiscreteAction<? extends E>... actions)
static java.lang.Throwable	perform(java.lang.Throwable accumulate, java.util.stream.Stream<? extends Throwables.DiscreteAction<?>> actions)
static java.lang.Throwable	perform(java.lang.Throwable accumulate, java.lang.String filePath, Throwables.FileOpType opType, java.util.stream.Stream<Throwables.DiscreteAction<? extends java.io.IOException>> actions)
static java.lang.Throwable	perform(java.lang.Throwable accumulate, java.lang.String filePath, Throwables.FileOpType opType, Throwables.DiscreteAction<? extends java.io.IOException>... actions)
static java.lang.Throwable	perform(java.lang.Throwable accumulate, Throwables.DiscreteAction<?>... actions)
static java.lang.RuntimeException	throwAsUncheckedException(java.lang.Throwable t) throw the exception as a unchecked exception, wrapping if a checked exception, else rethroing as is.
static java.lang.RuntimeException	unchecked(java.lang.Throwable t) If the provided exception is unchecked, return it directly, otherwise wrap it into a RuntimeException to make it unchecked.
static java.lang.Throwable	unwrapped(java.lang.Throwable t) If the provided throwable is a "wrapping" exception (see below), return the cause of that throwable, otherwise return its argument untouched.

Methods inherited from class java.lang.Object

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

Constructor Detail

Throwables

public Throwables()

Method Detail

isCausedBy

public static boolean isCausedBy(java.lang.Throwable t,
                                 java.util.function.Predicate<java.lang.Throwable> cause)

anyCauseMatches

public static boolean anyCauseMatches(java.lang.Throwable t,
                                      java.util.function.Predicate<java.lang.Throwable> cause)

merge

public static <T extends java.lang.Throwable> T merge(T existingFail,
                                                      T newFail)

maybeFail

public static void maybeFail(java.lang.Throwable fail)

maybeFail

public static <T extends java.lang.Throwable> void maybeFail(java.lang.Throwable fail,
                                                             java.lang.Class<T> checked)
                                                      throws T extends java.lang.Throwable

Throws:

T extends java.lang.Throwable

failIfCanCast

public static <T extends java.lang.Throwable> boolean failIfCanCast(java.lang.Throwable fail,
                                                                    java.lang.Class<T> checked)
                                                             throws T extends java.lang.Throwable

Throws:

T extends java.lang.Throwable

maybeFail

@SafeVarargs
public static <E extends java.lang.Exception> void maybeFail(Throwables.DiscreteAction<? extends E>... actions)

perform

@SafeVarargs
public static <E extends java.lang.Exception> void perform(Throwables.DiscreteAction<? extends E>... actions)
                                                                 throws E extends java.lang.Exception

Throws:

E extends java.lang.Exception

perform

public static <E extends java.lang.Exception> void perform(java.util.stream.Stream<? extends Throwables.DiscreteAction<? extends E>> stream,
                                                           Throwables.DiscreteAction<? extends E>... extra)
                                                    throws E extends java.lang.Exception

Throws:

E extends java.lang.Exception

perform

public static <E extends java.lang.Exception> void perform(java.util.stream.Stream<Throwables.DiscreteAction<? extends E>> actions)
                                                    throws E extends java.lang.Exception

Throws:

E extends java.lang.Exception

perform

public static java.lang.Throwable perform(java.lang.Throwable accumulate,
                                          Throwables.DiscreteAction<?>... actions)

perform

public static java.lang.Throwable perform(java.lang.Throwable accumulate,
                                          java.util.stream.Stream<? extends Throwables.DiscreteAction<?>> actions)

perform

public static java.lang.Throwable perform(java.lang.Throwable accumulate,
                                          java.util.Iterator<? extends Throwables.DiscreteAction<?>> actions)

perform

@SafeVarargs
public static void perform(File against,
                                        Throwables.FileOpType opType,
                                        Throwables.DiscreteAction<? extends java.io.IOException>... actions)

perform

@SafeVarargs
public static void perform(java.lang.String filePath,
                                        Throwables.FileOpType opType,
                                        Throwables.DiscreteAction<? extends java.io.IOException>... actions)

perform

@SafeVarargs
public static java.lang.Throwable perform(java.lang.Throwable accumulate,
                                                       java.lang.String filePath,
                                                       Throwables.FileOpType opType,
                                                       Throwables.DiscreteAction<? extends java.io.IOException>... actions)

perform

public static java.lang.Throwable perform(java.lang.Throwable accumulate,
                                          java.lang.String filePath,
                                          Throwables.FileOpType opType,
                                          java.util.stream.Stream<Throwables.DiscreteAction<? extends java.io.IOException>> actions)

close

public static java.lang.Throwable close(java.lang.Throwable accumulate,
                                        java.lang.Iterable<? extends java.lang.AutoCloseable> closeables)

extractIOExceptionCause

public static java.util.Optional<java.io.IOException> extractIOExceptionCause(java.lang.Throwable t)

unwrapped

public static java.lang.Throwable unwrapped(java.lang.Throwable t)

If the provided throwable is a "wrapping" exception (see below), return the cause of that throwable, otherwise return its argument untouched.

We call a "wrapping" exception in the context of that method an exception whose only purpose is to wrap another exception, and currently this method recognize only 2 exception as "wrapping" ones: ExecutionException and CompletionException.

unchecked

public static java.lang.RuntimeException unchecked(java.lang.Throwable t)

If the provided exception is unchecked, return it directly, otherwise wrap it into a RuntimeException to make it unchecked.

throwAsUncheckedException

public static java.lang.RuntimeException throwAsUncheckedException(java.lang.Throwable t)

throw the exception as a unchecked exception, wrapping if a checked exception, else rethroing as is.

cleaned

public static java.lang.RuntimeException cleaned(java.lang.Throwable t)

A shortcut for unchecked(unwrapped(t)). This is called "cleaned" because this basically removes the annoying cruft surrounding an exception :).