001/**
002 * Licensed to the Apache Software Foundation (ASF) under one
003 * or more contributor license agreements.  See the NOTICE file
004 * distributed with this work for additional information
005 * regarding copyright ownership.  The ASF licenses this file
006 * to you under the Apache License, Version 2.0 (the
007 * "License"); you may not use this file except in compliance
008 * with the License.  You may obtain a copy of the License at
009 *
010 *     http://www.apache.org/licenses/LICENSE-2.0
011 *
012 * Unless required by applicable law or agreed to in writing, software
013 * distributed under the License is distributed on an "AS IS" BASIS,
014 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
015 * See the License for the specific language governing permissions and
016 * limitations under the License.
017 */
018package org.apache.hadoop.hdfs.util;
019
020import org.slf4j.Logger;
021
022import java.io.IOException;
023
024public class IOUtilsClient {
025  /**
026   * Close the Closeable objects and <b>ignore</b> any {@link IOException} or
027   * null pointers. Must only be used for cleanup in exception handlers.
028   *
029   * @param log the log to record problems to at debug level. Can be null.
030   * @param closeables the objects to close
031   */
032  public static void cleanup(Logger log, java.io.Closeable... closeables) {
033    for (java.io.Closeable c : closeables) {
034      if (c != null) {
035        try {
036          c.close();
037        } catch(Throwable e) {
038          if (log != null && log.isDebugEnabled()) {
039            log.debug("Exception in closing " + c, e);
040          }
041        }
042      }
043    }
044  }
045
046}