| // 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.worker; |
| |
| import com.google.common.base.Throwables; |
| import java.io.IOException; |
| import javax.annotation.concurrent.ThreadSafe; |
| import org.apache.commons.pool2.impl.GenericKeyedObjectPool; |
| import org.apache.commons.pool2.impl.GenericKeyedObjectPoolConfig; |
| |
| /** |
| * A worker pool that spawns multiple workers and delegates work to them. |
| * |
| * <p>This is useful when the worker cannot handle multiple parallel requests on its own and we need |
| * to pre-fork a couple of them instead. |
| */ |
| @ThreadSafe |
| final class SimpleWorkerPool extends GenericKeyedObjectPool<WorkerKey, Worker> { |
| |
| public SimpleWorkerPool(WorkerFactory factory, GenericKeyedObjectPoolConfig config) { |
| super(factory, config); |
| } |
| |
| @Override |
| public Worker borrowObject(WorkerKey key) throws IOException, InterruptedException { |
| try { |
| return super.borrowObject(key); |
| } catch (Throwable t) { |
| Throwables.propagateIfPossible(t, IOException.class, InterruptedException.class); |
| throw new RuntimeException("unexpected", t); |
| } |
| } |
| |
| @Override |
| public void invalidateObject(WorkerKey key, Worker obj) throws IOException, InterruptedException { |
| try { |
| super.invalidateObject(key, obj); |
| } catch (Throwable t) { |
| Throwables.propagateIfPossible(t, IOException.class, InterruptedException.class); |
| throw new RuntimeException("unexpected", t); |
| } |
| } |
| } |