+++ /dev/null
-/*
- * Copyright 2017-present Open Networking Foundation
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- * http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-package io.atomix.utils.concurrent;
-
-import java.util.concurrent.CompletableFuture;
-import java.util.concurrent.CompletionStage;
-import java.util.concurrent.ExecutionException;
-import java.util.concurrent.Executor;
-import java.util.concurrent.TimeUnit;
-import java.util.concurrent.TimeoutException;
-import java.util.function.BiConsumer;
-import java.util.function.BiFunction;
-import java.util.function.Consumer;
-import java.util.function.Function;
-
-/**
- * A {@link CompletableFuture} that tracks whether the future or one of its descendants has been blocked on
- * a {@link CompletableFuture#get()} or {@link CompletableFuture#join()} call.
- */
-public class AtomixFuture<T> extends CompletableFuture<T> {
-
- /**
- * Wraps the given future in a new blockable future.
- *
- * @param future the future to wrap
- * @param <T> the future value type
- * @return a new blockable future
- */
- public static <T> AtomixFuture<T> wrap(CompletableFuture<T> future) {
- AtomixFuture<T> newFuture = new AtomixFuture<>();
- future.whenComplete((result, error) -> {
- if (error == null) {
- newFuture.complete(result);
- } else {
- newFuture.completeExceptionally(error);
- }
- });
- return newFuture;
- }
-
- /**
- * Returns a new completed Atomix future.
- *
- * @param result the future result
- * @param <T> the future result type
- * @return the completed future
- */
- public static <T> CompletableFuture<T> completedFuture(T result) {
- CompletableFuture<T> future = new AtomixFuture<>();
- future.complete(result);
- return future;
- }
-
- /**
- * Returns a new exceptionally completed Atomix future.
- *
- * @param t the future exception
- * @param <T> the future result type
- * @return the completed future
- */
- public static <T> CompletableFuture<T> exceptionalFuture(Throwable t) {
- CompletableFuture<T> future = new AtomixFuture<>();
- future.completeExceptionally(t);
- return future;
- }
-
- private static final ThreadContext NULL_CONTEXT = new NullThreadContext();
-
- private ThreadContext getThreadContext() {
- ThreadContext context = ThreadContext.currentContext();
- return context != null ? context : NULL_CONTEXT;
- }
-
- @Override
- public T get() throws InterruptedException, ExecutionException {
- ThreadContext context = getThreadContext();
- context.block();
- try {
- return super.get();
- } finally {
- context.unblock();
- }
- }
-
- @Override
- public T get(long timeout, TimeUnit unit) throws InterruptedException, ExecutionException, TimeoutException {
- ThreadContext context = getThreadContext();
- context.block();
- try {
- return super.get(timeout, unit);
- } finally {
- context.unblock();
- }
- }
-
- @Override
- public synchronized T join() {
- ThreadContext context = getThreadContext();
- context.block();
- try {
- return super.join();
- } finally {
- context.unblock();
- }
- }
-
- @Override
- public <U> CompletableFuture<U> thenApply(Function<? super T, ? extends U> fn) {
- return wrap(super.thenApply(fn));
- }
-
- @Override
- public <U> CompletableFuture<U> thenApplyAsync(Function<? super T, ? extends U> fn) {
- return wrap(super.thenApplyAsync(fn));
- }
-
- @Override
- public <U> CompletableFuture<U> thenApplyAsync(Function<? super T, ? extends U> fn, Executor executor) {
- return wrap(super.thenApplyAsync(fn, executor));
- }
-
- @Override
- public CompletableFuture<Void> thenAccept(Consumer<? super T> action) {
- return wrap(super.thenAccept(action));
- }
-
- @Override
- public CompletableFuture<Void> thenAcceptAsync(Consumer<? super T> action) {
- return wrap(super.thenAcceptAsync(action));
- }
-
- @Override
- public CompletableFuture<Void> thenAcceptAsync(Consumer<? super T> action, Executor executor) {
- return wrap(super.thenAcceptAsync(action, executor));
- }
-
- @Override
- public CompletableFuture<Void> thenRun(Runnable action) {
- return wrap(super.thenRun(action));
- }
-
- @Override
- public CompletableFuture<Void> thenRunAsync(Runnable action) {
- return wrap(super.thenRunAsync(action));
- }
-
- @Override
- public CompletableFuture<Void> thenRunAsync(Runnable action, Executor executor) {
- return wrap(super.thenRunAsync(action, executor));
- }
-
- @Override
- public <U, V> CompletableFuture<V> thenCombine(
- CompletionStage<? extends U> other, BiFunction<? super T, ? super U, ? extends V> fn) {
- return wrap(super.thenCombine(other, fn));
- }
-
- @Override
- public <U, V> CompletableFuture<V> thenCombineAsync(
- CompletionStage<? extends U> other, BiFunction<? super T, ? super U, ? extends V> fn) {
- return wrap(super.thenCombineAsync(other, fn));
- }
-
- @Override
- public <U, V> CompletableFuture<V> thenCombineAsync(
- CompletionStage<? extends U> other, BiFunction<? super T, ? super U, ? extends V> fn, Executor executor) {
- return wrap(super.thenCombineAsync(other, fn, executor));
- }
-
- @Override
- public <U> CompletableFuture<Void> thenAcceptBoth(
- CompletionStage<? extends U> other, BiConsumer<? super T, ? super U> action) {
- return wrap(super.thenAcceptBoth(other, action));
- }
-
- @Override
- public <U> CompletableFuture<Void> thenAcceptBothAsync(
- CompletionStage<? extends U> other, BiConsumer<? super T, ? super U> action) {
- return wrap(super.thenAcceptBothAsync(other, action));
- }
-
- @Override
- public <U> CompletableFuture<Void> thenAcceptBothAsync(
- CompletionStage<? extends U> other, BiConsumer<? super T, ? super U> action, Executor executor) {
- return wrap(super.thenAcceptBothAsync(other, action, executor));
- }
-
- @Override
- public CompletableFuture<Void> runAfterBoth(CompletionStage<?> other, Runnable action) {
- return wrap(super.runAfterBoth(other, action));
- }
-
- @Override
- public CompletableFuture<Void> runAfterBothAsync(CompletionStage<?> other, Runnable action) {
- return wrap(super.runAfterBothAsync(other, action));
- }
-
- @Override
- public CompletableFuture<Void> runAfterBothAsync(CompletionStage<?> other, Runnable action, Executor executor) {
- return wrap(super.runAfterBothAsync(other, action, executor));
- }
-
- @Override
- public <U> CompletableFuture<U> applyToEither(CompletionStage<? extends T> other, Function<? super T, U> fn) {
- return wrap(super.applyToEither(other, fn));
- }
-
- @Override
- public <U> CompletableFuture<U> applyToEitherAsync(CompletionStage<? extends T> other, Function<? super T, U> fn) {
- return wrap(super.applyToEitherAsync(other, fn));
- }
-
- @Override
- public <U> CompletableFuture<U> applyToEitherAsync(
- CompletionStage<? extends T> other, Function<? super T, U> fn, Executor executor) {
- return wrap(super.applyToEitherAsync(other, fn, executor));
- }
-
- @Override
- public CompletableFuture<Void> acceptEither(CompletionStage<? extends T> other, Consumer<? super T> action) {
- return wrap(super.acceptEither(other, action));
- }
-
- @Override
- public CompletableFuture<Void> acceptEitherAsync(CompletionStage<? extends T> other, Consumer<? super T> action) {
- return wrap(super.acceptEitherAsync(other, action));
- }
-
- @Override
- public CompletableFuture<Void> acceptEitherAsync(
- CompletionStage<? extends T> other, Consumer<? super T> action, Executor executor) {
- return wrap(super.acceptEitherAsync(other, action, executor));
- }
-
- @Override
- public CompletableFuture<Void> runAfterEither(CompletionStage<?> other, Runnable action) {
- return wrap(super.runAfterEither(other, action));
- }
-
- @Override
- public CompletableFuture<Void> runAfterEitherAsync(CompletionStage<?> other, Runnable action) {
- return wrap(super.runAfterEitherAsync(other, action));
- }
-
- @Override
- public CompletableFuture<Void> runAfterEitherAsync(CompletionStage<?> other, Runnable action, Executor executor) {
- return wrap(super.runAfterEitherAsync(other, action, executor));
- }
-
- @Override
- public <U> CompletableFuture<U> thenCompose(Function<? super T, ? extends CompletionStage<U>> fn) {
- return wrap(super.thenCompose(fn));
- }
-
- @Override
- public <U> CompletableFuture<U> thenComposeAsync(Function<? super T, ? extends CompletionStage<U>> fn) {
- return wrap(super.thenComposeAsync(fn));
- }
-
- @Override
- public <U> CompletableFuture<U> thenComposeAsync(
- Function<? super T, ? extends CompletionStage<U>> fn, Executor executor) {
- return wrap(super.thenComposeAsync(fn, executor));
- }
-
- @Override
- public CompletableFuture<T> whenComplete(BiConsumer<? super T, ? super Throwable> action) {
- return wrap(super.whenComplete(action));
- }
-
- @Override
- public CompletableFuture<T> whenCompleteAsync(BiConsumer<? super T, ? super Throwable> action) {
- return wrap(super.whenCompleteAsync(action));
- }
-
- @Override
- public CompletableFuture<T> whenCompleteAsync(BiConsumer<? super T, ? super Throwable> action, Executor executor) {
- return wrap(super.whenCompleteAsync(action, executor));
- }
-
- @Override
- public <U> CompletableFuture<U> handle(BiFunction<? super T, Throwable, ? extends U> fn) {
- return wrap(super.handle(fn));
- }
-
- @Override
- public <U> CompletableFuture<U> handleAsync(BiFunction<? super T, Throwable, ? extends U> fn) {
- return wrap(super.handleAsync(fn));
- }
-
- @Override
- public <U> CompletableFuture<U> handleAsync(BiFunction<? super T, Throwable, ? extends U> fn, Executor executor) {
- return wrap(super.handleAsync(fn, executor));
- }
-}
Code Review / controller.git / blobdiff