public void handleStreamEvent(StreamEvent event) {
      if (event.eventType == StreamEvent.Type.STREAM_PREPARED) {
        SessionInfo session = ((StreamEvent.SessionPreparedEvent) event).session;
        sessionsByHost.put(session.peer, session);
      } else if (event.eventType == StreamEvent.Type.FILE_PROGRESS) {
        ProgressInfo progressInfo = ((StreamEvent.ProgressEvent) event).progress;

        // update progress
        Set<ProgressInfo> progresses = progressByHost.get(progressInfo.peer);
        if (progresses == null) {
          progresses = Sets.newSetFromMap(new ConcurrentHashMap<ProgressInfo, Boolean>());
          progressByHost.put(progressInfo.peer, progresses);
        }
        if (progresses.contains(progressInfo)) progresses.remove(progressInfo);
        progresses.add(progressInfo);

        StringBuilder sb = new StringBuilder();
        sb.append("\rprogress: ");

        long totalProgress = 0;
        long totalSize = 0;
        for (Map.Entry<InetAddress, Set<ProgressInfo>> entry : progressByHost.entrySet()) {
          SessionInfo session = sessionsByHost.get(entry.getKey());

          long size = session.getTotalSizeToSend();
          long current = 0;
          int completed = 0;
          for (ProgressInfo progress : entry.getValue()) {
            if (progress.currentBytes == progress.totalBytes) completed++;
            current += progress.currentBytes;
          }
          totalProgress += current;
          totalSize += size;
          sb.append("[").append(entry.getKey());
          sb.append(" ").append(completed).append("/").append(session.getTotalFilesToSend());
          sb.append(" (").append(size == 0 ? 100L : current * 100L / size).append("%)] ");
        }
        long time = System.nanoTime();
        long deltaTime = Math.max(1L, TimeUnit.NANOSECONDS.toMillis(time - lastTime));
        lastTime = time;
        long deltaProgress = totalProgress - lastProgress;
        lastProgress = totalProgress;

        sb.append("[total: ")
            .append(totalSize == 0 ? 100L : totalProgress * 100L / totalSize)
            .append("% - ");
        sb.append(mbPerSec(deltaProgress, deltaTime)).append("MB/s");
        sb.append(" (avg: ")
            .append(mbPerSec(totalProgress, TimeUnit.NANOSECONDS.toMillis(time - start)))
            .append("MB/s)]");

        System.out.print(sb.toString());
      }
    }
 public boolean validateColumnFamily(String keyspace, String cfName) {
   Set<String> cfs = knownCfs.get(keyspace);
   return cfs != null && cfs.contains(cfName);
 }
  public static void main(String args[]) throws IOException {
    Options options = Options.parseArgs(args);
    try {
      // load keyspace descriptions.
      DatabaseDescriptor.loadSchemas(false);

      if (Schema.instance.getCFMetaData(options.keyspace, options.cf) == null)
        throw new IllegalArgumentException(
            String.format("Unknown keyspace/columnFamily %s.%s", options.keyspace, options.cf));

      Keyspace keyspace = Keyspace.openWithoutSSTables(options.keyspace);
      ColumnFamilyStore cfs = keyspace.getColumnFamilyStore(options.cf);

      OutputHandler handler = new OutputHandler.SystemOutput(false, options.debug);
      Directories.SSTableLister lister = cfs.directories.sstableLister();
      if (options.snapshot != null) lister.onlyBackups(true).snapshots(options.snapshot);
      else lister.includeBackups(false);

      Collection<SSTableReader> readers = new ArrayList<SSTableReader>();

      // Upgrade sstables
      for (Map.Entry<Descriptor, Set<Component>> entry : lister.list().entrySet()) {
        Set<Component> components = entry.getValue();
        if (!components.contains(Component.DATA) || !components.contains(Component.PRIMARY_INDEX))
          continue;

        try {
          SSTableReader sstable =
              SSTableReader.openNoValidation(entry.getKey(), components, cfs.metadata);
          if (sstable.descriptor.version.equals(Descriptor.Version.CURRENT)) continue;
          readers.add(sstable);
        } catch (Exception e) {
          JVMStabilityInspector.inspectThrowable(e);
          System.err.println(String.format("Error Loading %s: %s", entry.getKey(), e.getMessage()));
          if (options.debug) e.printStackTrace(System.err);

          continue;
        }
      }

      int numSSTables = readers.size();
      handler.output("Found " + numSSTables + " sstables that need upgrading.");

      for (SSTableReader sstable : readers) {
        try {
          Upgrader upgrader = new Upgrader(cfs, sstable, handler);
          upgrader.upgrade();

          if (!options.keepSource) {
            // Remove the sstable (it's been copied by upgrade)
            System.out.format("Deleting table %s.%n", sstable.descriptor.baseFilename());
            sstable.markObsolete();
            sstable.selfRef().release();
          }
        } catch (Exception e) {
          System.err.println(String.format("Error upgrading %s: %s", sstable, e.getMessage()));
          if (options.debug) e.printStackTrace(System.err);
        }
      }
      CompactionManager.instance.finishCompactionsAndShutdown(5, TimeUnit.MINUTES);
      SSTableDeletingTask.waitForDeletions();
      System.exit(0);
    } catch (Exception e) {
      System.err.println(e.getMessage());
      if (options.debug) e.printStackTrace(System.err);
      System.exit(1);
    }
  }