Utils.java

/*
 * 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 tachyon.conf;

import org.apache.log4j.Logger;

import tachyon.util.CommonUtils;

/**
 * Utils for tachyon.conf package.
 */
class Utils {
  private static final Logger LOG = Logger.getLogger("");

  public static boolean getBooleanProperty(String property) {
    return Boolean.valueOf(getProperty(property));
  }

  public static boolean getBooleanProperty(String property, boolean defaultValue) {
    return Boolean.valueOf(getProperty(property, defaultValue + ""));
  }

  public static int getIntProperty(String property) {
    return Integer.valueOf(getProperty(property));
  }

  public static int getIntProperty(String property, int defaultValue) {
    return Integer.valueOf(getProperty(property, defaultValue + ""));
  }

  public static long getLongProperty(String property) {
    return Long.valueOf(getProperty(property));
  }

  public static long getLongProperty(String property, int defaultValue) {
    return Long.valueOf(getProperty(property, defaultValue + ""));
  }

  public static String getProperty(String property) {
    String ret = System.getProperty(property);
    if (ret == null) {
      CommonUtils.illegalArgumentException(property + " is not configured.");
    } else {
      LOG.debug(property + " : " + ret);
    }
    return ret;
  }

  public static String getProperty(String property, String defaultValue) {
    String ret = System.getProperty(property);
    String msg = "";
    if (ret == null) {
      ret = defaultValue;
      msg = " uses the default value";
    }
    LOG.debug(property + msg + " : " + ret);
    return ret;
  }

}