Source code

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,
013 * software distributed under the License is distributed on an
014 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
015 * KIND, either express or implied.  See the License for the
016 * specific language governing permissions and limitations
017 * under the License.
018 */
019package org.apache.reef.wake.impl;
020
021import java.util.logging.ConsoleHandler;
022import java.util.logging.Handler;
023import java.util.logging.Level;
024import java.util.logging.Logger;
025
026/**
027 * Utility for logging.
028 */
029public final class LoggingUtils {
030
031  /**
032   * Sets the logging level.
033   *
034   * @param level the logging level
035   */
036  public static void setLoggingLevel(final Level level) {
037    final Handler[] handlers = Logger.getLogger("").getHandlers();
038    ConsoleHandler ch = null;
039    for (final Handler h : handlers) {
040      if (h instanceof ConsoleHandler) {
041        ch = (ConsoleHandler) h;
042        break;
043      }
044    }
045    if (ch == null) {
046      ch = new ConsoleHandler();
047      Logger.getLogger("").addHandler(ch);
048    }
049    ch.setLevel(level);
050    Logger.getLogger("").setLevel(level);
051  }
052
053  /**
054   * Empty private constructor to prohibit instantiation of utility class.
055   */
056  private LoggingUtils() {
057  }
058}