/**
 * Copyright (C) 2014-2016 LinkedIn Corp. (pinot-core@linkedin.com)
 *
 * Licensed 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 com.linkedin.pinot.tools;

import java.lang.reflect.Field;

import org.kohsuke.args4j.Option;
public class AbstractBaseCommand {
  public static final String DEFAULT_ZK_ADDRESS = "localhost:2181";
  public static final String DEFAULT_CLUSTER_NAME = "PinotCluster";

  public AbstractBaseCommand(boolean addShutdownHook) {
    if (addShutdownHook) {
      Runtime.getRuntime().addShutdownHook(new Thread() {
        @Override
        public void run() {
          cleanup();
        }
      });
    }
  }

  public AbstractBaseCommand() {

  }

  public String getName() {
    return "BaseCommand";
  }

  public void printUsage() {
    System.out.println("Usage: " + this.getName());

    for (Field f : this.getClass().getDeclaredFields()) {
      if (f.isAnnotationPresent(Option.class)) {
        Option option = f.getAnnotation(Option.class);

        System.out.println(String.format("\t%-25s %-30s: %s (required=%s)", option.name(), option.metaVar(),
            option.usage(), option.required()));
      }
    }
  }

  public void cleanup() {
  }
}