content: /*
   * The Alluxio Open Foundation licenses this work under the Apache License, version 2.0
   * (the "License"). You may not use this work except in compliance with the License, which is
   * available at www.apache.org/licenses/LICENSE-2.0
   *
   * This software is distributed on an "AS IS" basis, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND,
   * either express or implied, as more fully set forth in the License.
   *
   * See the NOTICE file distributed with this work for information regarding copyright ownership.
   */
  
  package alluxio.cli.job;
  
  import alluxio.cli.AbstractShell;
  import alluxio.cli.Command;
  import alluxio.cli.CommandUtils;
  import alluxio.client.file.FileSystemContext;
  import alluxio.conf.AlluxioConfiguration;
  import alluxio.conf.Configuration;
  import alluxio.util.ConfigurationUtils;
  
  import com.google.common.collect.ImmutableMap;
  
  import java.io.IOException;
  import java.util.Map;
  import javax.annotation.concurrent.NotThreadSafe;
  
  /**
   * Class for handling job command line inputs.
   */
  @NotThreadSafe
  public final class JobShell extends AbstractShell {
    private static final Map<String, String[]> CMD_ALIAS = ImmutableMap.<String, String[]>builder()
        .build();
  
    /**
     * Main method, starts a new JobShell.
     *
     * @param argv array of arguments given by the user's input from the terminal
     */
    public static void main(String[] argv) throws IOException {
      int ret;
      AlluxioConfiguration conf = Configuration.global();
  
      if (!ConfigurationUtils.masterHostConfigured(conf) && argv.length > 0) {
        System.out.println(ConfigurationUtils
            .getMasterHostNotConfiguredMessage("Alluxio job shell"));
        System.exit(1);
      }
  
      try (JobShell shell = new JobShell(conf)) {
        ret = shell.run(argv);
      }
      System.exit(ret);
    }
  
    /**
     * Creates a new instance of {@link JobShell}.
     *
     * @param alluxioConf Alluxio configuration
     */
    public JobShell(AlluxioConfiguration alluxioConf) {
      super(CMD_ALIAS, null, alluxioConf);
    }
  
    @Override
    protected String getShellName() {
      return "job";
    }
  
    @Override
    protected Map<String, Command> loadCommands() {
      return CommandUtils.loadCommands(JobShell.class.getPackage().getName(),
          new Class[] {FileSystemContext.class},
          new Object[] {mCloser.register(FileSystemContext.create(mConfiguration))});
    }
  }
  