com.hotels.bdp.circustrain.s3mapreducecp.util.IoUtil Maven / Gradle / Ivy
/**
* Copyright (C) 2016-2017 Expedia Inc and Apache Hadoop contributors.
*
* Based on {@code org.apache.hadoop.io.IOUtils} from Hadoop Common 2.7.1:
*
* https://github.com/apache/hadoop/blob/release-2.7.1/hadoop-common-project/hadoop-common/src/main/java/org/
* apache/hadoop/io/IOUtils.java
*
* 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.hotels.bdp.circustrain.s3mapreducecp.util;
import java.io.Closeable;
import org.slf4j.Logger;
/**
* IO utility functions used in S3MapReduceCp.
*/
public final class IoUtil {
private IoUtil() {}
/**
* Close the Closeable objects and ignore any {@link Throwable} or null pointers. Must only be used for cleanup
* in exception handlers.
*
* @param closeables the objects to close
*/
public static void closeSilently(Closeable... closeables) {
closeSilently(null, closeables);
}
/**
* Close the Closeable objects and ignore any {@link Throwable} or null pointers. Must only be used for cleanup
* in exception handlers.
*
* {@link Throwable} caught whilst closing a resource are logged out using the provided {@code logger}.
*
*
* @param log the log to record problems to at debug level. Can be null.
* @param closeables the objects to close
*/
public static void closeSilently(Logger log, Closeable... closeables) {
for (Closeable c : closeables) {
if (c != null) {
try {
c.close();
} catch (Exception e) {
if (log != null) {
log.debug("Exception in closing {}", c, e);
}
}
}
}
}
}