content: /*
   * 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.ambari.server.utils;
  
  import java.io.Closeable;
  import java.io.IOException;
  
  import org.slf4j.Logger;
  import org.slf4j.LoggerFactory;
  
  /**
   * Utilities for closing @{link Closeable}s.
   *
   * @see com.google.common.io.Closeables
   */
  public final class Closeables {
  
    private static final Logger LOGGER = LoggerFactory.getLogger(Closeables.class);
  
    /**
     * Closes <code>c</code> ignoring any <code>IOException</code>s.
     */
    public static void closeSilently(Closeable c) {
      close(c, null);
    }
  
    /**
     * Closes <code>c</code> logging any <code>IOException</code> as warning via this class' logger.
     */
    public static void closeLoggingExceptions(Closeable c) {
      closeLoggingExceptions(c, LOGGER);
    }
  
    /**
     * Closes <code>c</code> logging any <code>IOException</code> via the specified <code>logger</code>.
     */
    public static void closeLoggingExceptions(Closeable c, Logger logger) {
      close(c, logger);
    }
  
    private static void close(Closeable c, Logger logger) {
      if (c != null) {
        try {
          c.close();
        } catch (IOException e) {
          if (logger != null) {
            logger.warn("IOException while closing Closeable", e);
          }
        }
      }
    }
  
    private Closeables() {
      throw new UnsupportedOperationException("No instances");
    }
  
  }
  