| /* |
| * Licensed to the Apache Software Foundation (ASF) under one or more |
| * contributor license agreements. See the NOTICE file distributed with |
| * this work for additional information regarding copyright ownership. |
| * The ASF licenses this file to You 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.apache.solr.common; |
| |
| import java.util.Objects; |
| import java.util.concurrent.CountDownLatch; |
| import java.util.concurrent.TimeUnit; |
| |
| /** |
| * This class mimicks the operation of {@link java.util.concurrent.CountDownLatch}, but it also |
| * periodically checks the state of the provided {@link SolrCloseable} and terminates the wait |
| * if it's closed by throwing an {@link InterruptedException}. |
| */ |
| public class SolrCloseableLatch { |
| |
| private final SolrCloseable closeable; |
| private final CountDownLatch latch; |
| |
| public SolrCloseableLatch(int count, SolrCloseable closeable) { |
| Objects.requireNonNull(closeable); |
| this.closeable = closeable; |
| this.latch = new CountDownLatch(count); |
| } |
| |
| public void await() throws InterruptedException { |
| await(Long.MAX_VALUE, TimeUnit.SECONDS); |
| } |
| |
| public boolean await(long timeout, TimeUnit unit) throws InterruptedException { |
| timeout = unit.toMillis(timeout); |
| while (timeout > 0) { |
| if (latch.await(100, TimeUnit.MILLISECONDS)) { |
| return true; |
| } |
| if (closeable.isClosed()) { |
| throw new InterruptedException(closeable + " has been closed."); |
| } |
| timeout -= 100; |
| } |
| return false; |
| } |
| |
| public void countDown() { |
| latch.countDown(); |
| } |
| |
| public long getCount() { |
| return latch.getCount(); |
| } |
| } |