| // Copyright 2018 The Bazel Authors. All rights reserved. |
| // |
| // 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 com.google.devtools.build.lib.remote.util; |
| |
| import com.google.common.util.concurrent.ListenableFuture; |
| import java.io.IOException; |
| import java.util.concurrent.ExecutionException; |
| |
| /** Utility methods for the remote package. * */ |
| public class Utils { |
| |
| private Utils() {} |
| |
| /** |
| * Returns the result of a {@link ListenableFuture} if successful, or throws any checked {@link |
| * Exception} directly if it's an {@link IOException} or else wraps it in an {@link IOException}. |
| */ |
| public static <T> T getFromFuture(ListenableFuture<T> f) |
| throws IOException, InterruptedException { |
| try { |
| return f.get(); |
| } catch (ExecutionException e) { |
| if (e.getCause() instanceof IOException) { |
| throw (IOException) e.getCause(); |
| } |
| if (e.getCause() instanceof RuntimeException) { |
| throw (RuntimeException) e.getCause(); |
| } |
| throw new IOException(e.getCause()); |
| } |
| } |
| } |