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A client library for memcached.
There is a newer version: 2.12.3
/**
 * Copyright (C) 2006-2009 Dustin Sallings
 * Copyright (C) 2009-2013 Couchbase, Inc.
 *
 * Permission is hereby granted, free of charge, to any person obtaining a copy
 * of this software and associated documentation files (the "Software"), to deal
 * in the Software without restriction, including without limitation the rights
 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 * copies of the Software, and to permit persons to whom the Software is
 * furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in
 * all copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALING
 * IN THE SOFTWARE.
 */

package net.spy.memcached.compat.log;

import java.text.SimpleDateFormat;
import java.util.Date;

/**
 * Default logger implementation.
 *
 * This logger is really primitive. It just logs everything to stderr if it's
 * higher than INFO.
 */
public class DefaultLogger extends AbstractLogger {

  private final SimpleDateFormat df;

  /**
   * Get an instance of DefaultLogger.
   */
  public DefaultLogger(String name) {
    super(name);
    df = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss.SSS");
  }

  /**
   * Always returns false, trace is not enabled on the DefaultLogger.
   */
  @Override
  public boolean isTraceEnabled() {
    return (false);
  }

  /**
   * Always returns false, debug is not enabled on the DefaultLogger.
   */
  @Override
  public boolean isDebugEnabled() {
    return (false);
  }

  /**
   * Always returns true, info is always enabled on the DefaultLogger.
   */
  @Override
  public boolean isInfoEnabled() {
    return (true);
  }

  /**
   * @see AbstractLogger
   */
  @Override
  public synchronized void log(Level level, Object message, Throwable e) {
    if (level == Level.INFO
        || level == Level.WARN
        || level == Level.ERROR
        || level == Level.FATAL) {
      System.err.printf("%s %s %s:  %s\n", df.format(new Date()), level.name(),
          getName(), message);
      if (e != null) {
        e.printStackTrace();
      }
    }
  }
}