org.apache.cassandra.utils.concurrent.WrappedSharedCloseable Maven / Gradle / Ivy
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* 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 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;
}
}