| /* |
| * 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.cassandra.utils.concurrent; |
| |
| import java.util.Arrays; |
| |
| import org.apache.cassandra.utils.Throwables; |
| |
| import static org.apache.cassandra.utils.Throwables.maybeFail; |
| import static org.apache.cassandra.utils.Throwables.merge; |
| |
| /** |
| * An implementation of SharedCloseable that wraps a normal AutoCloseable, |
| * ensuring its close method is only called when all instances of SharedCloseable have been |
| */ |
| public abstract class WrappedSharedCloseable extends SharedCloseableImpl |
| { |
| final AutoCloseable[] wrapped; |
| |
| public WrappedSharedCloseable(final AutoCloseable closeable) |
| { |
| this(new AutoCloseable[] { closeable}); |
| } |
| |
| public WrappedSharedCloseable(final AutoCloseable[] closeable) |
| { |
| super(new Tidy(closeable)); |
| wrapped = closeable; |
| } |
| |
| static final class Tidy implements RefCounted.Tidy |
| { |
| final AutoCloseable[] closeable; |
| Tidy(AutoCloseable[] closeable) |
| { |
| this.closeable = closeable; |
| } |
| |
| public void tidy() throws Exception |
| { |
| Throwable fail = null; |
| for (AutoCloseable c : closeable) |
| { |
| try |
| { |
| c.close(); |
| } |
| catch (Throwable t) |
| { |
| fail = merge(fail, t); |
| } |
| } |
| maybeFail(fail); |
| } |
| |
| public String name() |
| { |
| return Arrays.toString(closeable); |
| } |
| } |
| |
| protected WrappedSharedCloseable(WrappedSharedCloseable copy) |
| { |
| super(copy); |
| wrapped = copy.wrapped; |
| } |
| } |