| /* |
| * Copyright 2018-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 org.onosproject.store.primitives; |
| |
| import java.util.concurrent.CompletableFuture; |
| import java.util.concurrent.ExecutionException; |
| import java.util.concurrent.TimeUnit; |
| import java.util.concurrent.TimeoutException; |
| |
| /** |
| * Completable Futures with known error states used for testing. |
| */ |
| public final class TestingCompletableFutures { |
| |
| private TestingCompletableFutures() { |
| } |
| |
| /** Indicates which kind of error to produce. */ |
| public enum ErrorState { NONE, INTERRUPTED_EXCEPTION, TIMEOUT_EXCEPTION, EXECUTION_EXCEPTION } |
| |
| private static class TimeoutExceptionFuture<T> extends CompletableFuture<T> { |
| @Override |
| public T get(long timeout, TimeUnit unit) |
| throws TimeoutException { |
| throw new TimeoutException(); |
| } |
| } |
| |
| private static class InterruptedFuture<T> extends CompletableFuture<T> { |
| @Override |
| public T get(long timeout, TimeUnit unit) |
| throws InterruptedException { |
| throw new InterruptedException(); |
| } |
| } |
| |
| private static class ExecutionExceptionFuture<T> extends CompletableFuture<T> { |
| @Override |
| public T get(long timeout, TimeUnit unit) |
| throws ExecutionException { |
| throw new ExecutionException("", new Exception()); |
| } |
| } |
| |
| /** |
| * Creates a Long Future for a given error type. |
| * |
| * @param errorState wht kind of error to produce |
| * @return new future that will generate the requested error |
| */ |
| public static CompletableFuture<Long> createFuture(ErrorState errorState) { |
| switch (errorState) { |
| case TIMEOUT_EXCEPTION: |
| return new TimeoutExceptionFuture<>(); |
| case INTERRUPTED_EXCEPTION: |
| return new InterruptedFuture<>(); |
| case EXECUTION_EXCEPTION: |
| return new ExecutionExceptionFuture<>(); |
| default: |
| return new CompletableFuture<>(); |
| } |
| } |
| |
| /** |
| * Creates a Long Future for a given error type. |
| * |
| * @param errorState wht kind of error to produce |
| * @return new future that will generate the requested error |
| */ |
| public static CompletableFuture<String> createStringFuture(ErrorState errorState) { |
| switch (errorState) { |
| case TIMEOUT_EXCEPTION: |
| return new TimeoutExceptionFuture<>(); |
| case INTERRUPTED_EXCEPTION: |
| return new InterruptedFuture<>(); |
| case EXECUTION_EXCEPTION: |
| return new ExecutionExceptionFuture<>(); |
| default: |
| return new CompletableFuture<>(); |
| } |
| } |
| } |