/**
 * 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.admin.command;

import com.linkedin.pinot.common.utils.KafkaStarterUtils;
import com.linkedin.pinot.tools.Command;
import java.io.File;
import java.io.IOException;
import org.kohsuke.args4j.Option;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;


/**
 * Class for command to start Kafka.
 */
public class StartKafkaCommand extends AbstractBaseAdminCommand implements Command {
  private static final Logger LOGGER = LoggerFactory.getLogger(StartKafkaCommand.class);
  @Option(name="-port", required=false, metaVar="<int>", usage="Port to start Kafka server on.")
  private int _port = KafkaStarterUtils.DEFAULT_KAFKA_PORT;

  @Option(name="-help", required=false, help=true, aliases={"-h", "--h", "--help"}, usage="Print this message.")
  private boolean _help = false;

  @Option(name="-brokerId", required=false, metaVar="<int>", usage="Kafka broker ID.")
  private int _brokerId = KafkaStarterUtils.DEFAULT_BROKER_ID;

  @Option(name="-zkAddress", required=false, metaVar="<string>", usage="Address of Zookeeper.")
  private String _zkAddress = "localhost:2181";

  @Override
  public boolean getHelp() {
    return _help;
  }

  @Override
  public String getName() {
    return "StartKafka";
  }

  @Override
  public String toString() {
    return "StartKafka -port " + _port + " -brokerId " + _brokerId + " -zkAddress " + _zkAddress;

  }

  @Override
  public String description() {
    return "Start Kafka at the specified port.";
  }

  @Override
  public boolean execute() throws IOException {
    KafkaStarterUtils.startServer(_port, _brokerId, _zkAddress, KafkaStarterUtils.getDefaultKafkaConfiguration());

    LOGGER.info("Start kafka at localhost:" + _port + " in thread " + Thread.currentThread().getName());

    savePID(System.getProperty("java.io.tmpdir") + File.separator + ".kafka.pid");
    return true;
  }
}