/**
* 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.curator.utils;
import com.google.common.io.
Closeables;
import org.slf4j.
Logger;
import org.slf4j.
LoggerFactory;
import java.io.
Closeable;
import java.io.
IOException;
/**
* This class adds back functionality that was removed in Guava v16.0.
*/
public class
CloseableUtils
{
private static final
Logger log =
LoggerFactory.
getLogger(
CloseableUtils.class);
/**
* <p>
* This method has been added because Guava has removed the
* {@code closeQuietly()} method from {@code Closeables} in v16.0. It's
* tempting simply to replace calls to {@code closeQuietly(closeable)}
* with calls to {@code close(closeable, true)} to close
* {@code Closeable}s while swallowing {@code IOException}s, but
* {@code close()} is declared as {@code throws IOException} whereas
* {@code closeQuietly()} is not, so it's not a drop-in replacement.
* </p>
* <p>
* On the whole, Guava is very backwards compatible. By fixing this nit,
* Curator can continue to support newer versions of Guava without having
* to bump its own dependency version.
* </p>
* <p>
* See <a href="https://issues.apache.org/jira/browse/CURATOR-85">https://issues.apache.org/jira/browse/CURATOR-85</a>
* </p>
*/
public static void
closeQuietly(
Closeable closeable)
{
try
{
// Here we've instructed Guava to swallow the IOException
Closeables.
close(
closeable, true);
}
catch (
IOException e )
{
// We instructed Guava to swallow the IOException, so this should
// never happen. Since it did, log it.
log.
error("IOException should not have been thrown.",
e);
}
}
}