content: /**
   * 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 io.jafka;
  
  import io.jafka.consumer.ConsumerConfig;
  import io.jafka.producer.ProducerConfig;
  import io.jafka.server.ServerConfig;
  import io.jafka.server.ServerStartable;
  import io.jafka.utils.Utils;
  import org.slf4j.Logger;
  import org.slf4j.LoggerFactory;
  
  import java.io.Closeable;
  import java.io.File;
  import java.util.Properties;
  
  /**
   * Jafka Main point
   *
   * @author adyliu (imxylz@gmail.com)
   * @since 1.0
   */
  public class Jafka implements Closeable {
  
      private volatile Thread shutdownHook;
  
      //for test privacy
      private ServerStartable serverStartable;
      //
      private final Logger logger = LoggerFactory.getLogger(Jafka.class);
  
      public void start(String mainFileName, String consumerFile, String producerFile) {
          File mainFile = Utils.getCanonicalFile(new File(mainFileName));
          if (!mainFile.isFile() || !mainFile.exists()) {
              System.err.println(String.format("ERROR: Main config file not exist => '%s', copy one from 'conf/server.properties.sample' first.", mainFile.getAbsolutePath()));
              System.exit(2);
          }
          start(Utils.loadProps(mainFileName),//
                  consumerFile == null ? null : Utils.loadProps(consumerFile),//
                  producerFile == null ? null : Utils.loadProps(producerFile));
      }
  
      public void start(Properties mainProperties, Properties consumerProperties, Properties producerProperties) {
          final ServerConfig config = new ServerConfig(mainProperties);
          final ConsumerConfig consumerConfig = consumerProperties == null ? null : new ConsumerConfig(consumerProperties);
          final ProducerConfig producerConfig = consumerConfig == null ? null : new ProducerConfig(producerProperties);
          start(config, consumerConfig, producerConfig);
      }
  
      public void start(ServerConfig config, ConsumerConfig consumerConfig, ProducerConfig producerConfig) {
          if (consumerConfig == null) {
              serverStartable = new ServerStartable(config);
          } else {
              serverStartable = new ServerStartable(config, consumerConfig, producerConfig);
          }
          //
          shutdownHook = new Thread() {
  
              @Override
              public void run() {
                  serverStartable.close();
                  serverStartable.awaitShutdown();
              }
          };
          Runtime.getRuntime().addShutdownHook(shutdownHook);
          //
          serverStartable.startup();
      }
  
      public void awaitShutdown() {
          if (serverStartable != null) {
              serverStartable.awaitShutdown();
          }
      }
  
      @Override
      public synchronized void close() {
          if (shutdownHook != null) {
              try {
                  Runtime.getRuntime().removeShutdownHook(shutdownHook);
              } catch (IllegalStateException ex) {
                  //ignore shutting down status
              }
              shutdownHook.run();
              shutdownHook = null;
          }
      }
  
      /**
       * get the server listening port
       *
       * @return listening port
       */
      public int getPort() {
          return serverStartable == null ? -1 : serverStartable.getServerConfig().getPort();
      }
  
      public int getHttpPort(){
          return serverStartable == null ? -1 : serverStartable.getServerConfig().getHttpPort();
      }
  
      /**
       * flush all messages to disk(this method is used for test)
       */
      void flush() {
          if (serverStartable != null) {
              serverStartable.flush();
          }
      }
  
      public static void main(String[] args) {
          int argsSize = args.length;
          if (argsSize != 1 && argsSize != 3) {
              System.out.println("USAGE: java [options] Jafka server.properties [consumer.properties producer.properties]");
              System.exit(1);
          }
          //
          Jafka jafka = new Jafka();
          jafka.start(args[0], argsSize > 1 ? args[1] : null, argsSize > 1 ? args[2] : null);
          jafka.awaitShutdown();
          jafka.close();
      }
  }
  