public static void main()

in hbase-hbck2/src/main/java/org/apache/hbase/hbck1/OfflineMetaRepair.java [68:122]
44 lines of code
11 McCabe index (conditional complexity)

  public static void main(String[] args) throws Exception {
    // create a fsck object
    Configuration conf = HBaseConfiguration.create();
    // Cover both bases, the old way of setting default fs and the new.
    // We're supposed to run on 0.20 and 0.21 anyways.
    CommonFSUtils.setFsDefault(conf, CommonFSUtils.getRootDir(conf));
    HBaseFsck fsck = new HBaseFsck(conf);

    // Process command-line args.
    for (int i = 0; i < args.length; i++) {
      String cmd = args[i];
      if (cmd.equals("-details")) {
        HBaseFsck.setDisplayFullReport();
      } else if (cmd.equals("-base")) {
        if (i == args.length - 1) {
          System.err.println("OfflineMetaRepair: -base needs an HDFS path.");
          printUsageAndExit();
        }
        // update hbase root dir to user-specified base
        i++;
        CommonFSUtils.setRootDir(conf, new Path(args[i]));
        CommonFSUtils.setFsDefault(conf, CommonFSUtils.getRootDir(conf));
      } else if (cmd.equals("-sidelineDir")) {
        if (i == args.length - 1) {
          System.err.println("OfflineMetaRepair: -sidelineDir needs an HDFS path.");
          printUsageAndExit();
        }
        // set the hbck sideline dir to user-specified one
        i++;
        fsck.setSidelineDir(args[i]);
      } else {
        String str = "Unknown command line option : " + cmd;
        LOG.info(str);
        System.out.println(str);
        printUsageAndExit();
      }
    }

    System.out.println("OfflineMetaRepair command line options: " + String.join(" ", args));

    // Fsck doesn't shutdown and and doesn't provide a way to shutdown its
    // threads cleanly, so we do a System.exit.
    boolean success = false;
    try {
      success = fsck.rebuildMeta();
    } catch (MultipleIOException mioes) {
      for (IOException ioe : mioes.getExceptions()) {
        LOG.error("Bailed out due to:", ioe);
      }
    } catch (Exception e) {
      LOG.error("Bailed out due to: ", e);
    } finally {
      System.exit(success ? 0 : 1);
    }
  }