How to use

GridGgfsPathSummary

in

org.gridgain.grid.ggfs

/** {@inheritDoc} */
@Override public long size(GridGgfsPath path) throws GridException {
  if (enterBusy()) {
    try {
      A.notNull(path, "path");
      GridUuid nextId = meta.fileId(path);
      if (nextId == null)
        return 0;
      GridGgfsPathSummary sum = new GridGgfsPathSummary(path);
      summary0(nextId, sum);
      return sum.totalLength();
    }
    finally {
      busyLock.leaveBusy();
    }
  }
  else
    throw new IllegalStateException("Failed to get path size because Grid is stopping.");
}

/**
 * Calculates size of directory or file for given ID.
 *
 * @param fileId File ID.
 * @param sum Summary object that will collect information.
 * @throws GridException If failed.
 */
private void summary0(GridUuid fileId, GridGgfsPathSummary sum) throws GridException {
  assert sum != null;
  GridGgfsFileInfo info = meta.info(fileId);
  if (info != null) {
    if (info.isDirectory()) {
      if (!ROOT_ID.equals(info.id()))
        sum.directoriesCount(sum.directoriesCount() + 1);
      for (GridGgfsListingEntry entry : info.listing().values())
        summary0(entry.fileId(), sum);
    }
    else {
      sum.filesCount(sum.filesCount() + 1);
      sum.totalLength(sum.totalLength() + info.length());
    }
  }
}

if (enterBusy()) {
  try {
    GridGgfsPathSummary sum = new GridGgfsPathSummary();
      ggfsCtx.data().maxSpaceSize(),
      secondarySpaceSize,
      sum.directoriesCount(),
      sum.filesCount(),
      metrics.filesOpenedForRead(),
      metrics.filesOpenedForWrite(),

GridGgfsPathSummary sum = new GridGgfsPathSummary();
sum.readExternal(in);

/** {@inheritDoc} */
@Override public GridGgfsPathSummary summary(GridGgfsPath path) throws GridException {
  if (enterBusy()) {
    try {
      A.notNull(path, "path");
      if (log.isDebugEnabled())
        log.debug("Calculating path summary: " + path);
      GridUuid fileId = meta.fileId(path);
      if (fileId == null)
        throw new GridGgfsFileNotFoundException("Failed to get path summary (path not found): " + path);
      GridGgfsPathSummary sum = new GridGgfsPathSummary(path);
      summary0(fileId, sum);
      return sum;
    }
    finally {
      busyLock.leaveBusy();
    }
  }
  else
    throw new IllegalStateException("Failed to get path summary because Grid is stopping.");
}

if (busyLock.enterBusy()) {
  try {
    GridGgfsPathSummary sum = new GridGgfsPathSummary();
      ggfsCtx.data().maxSpaceSize(),
      secondarySpaceSize,
      sum.directoriesCount(),
      sum.filesCount(),
      metrics.filesOpenedForRead(),
      metrics.filesOpenedForWrite(),

GridGgfsPathSummary sum = new GridGgfsPathSummary();
sum.readExternal(in);

/** {@inheritDoc} */
@Override public GridGgfsPathSummary summary(GridGgfsPath path) throws GridException {
  if (busyLock.enterBusy()) {
    try {
      A.notNull(path, "path");
      if (log.isDebugEnabled())
        log.debug("Calculating path summary: " + path);
      GridUuid fileId = meta.fileId(path);
      if (fileId == null)
        throw new GridGgfsFileNotFoundException("Failed to get path summary (path not found): " + path);
      GridGgfsPathSummary sum = new GridGgfsPathSummary(path);
      summary0(fileId, sum);
      return sum;
    }
    finally {
      busyLock.leaveBusy();
    }
  }
  else
    throw new IllegalStateException("Failed to get path summary because Grid is stopping.");
}

/**
 * Calculates size of directory or file for given ID.
 *
 * @param fileId File ID.
 * @param sum Summary object that will collect information.
 * @throws GridException If failed.
 */
private void summary0(GridUuid fileId, GridGgfsPathSummary sum) throws GridException {
  assert sum != null;
  GridGgfsFileInfo info = meta.info(fileId);
  if (info != null) {
    if (info.isDirectory()) {
      if (!ROOT_ID.equals(info.id()))
        sum.directoriesCount(sum.directoriesCount() + 1);
      for (GridGgfsListingEntry entry : info.listing().values())
        summary0(entry.fileId(), sum);
    }
    else {
      sum.filesCount(sum.filesCount() + 1);
      sum.totalLength(sum.totalLength() + info.length());
    }
  }
}

/** {@inheritDoc} */
@Override public long size(GridGgfsPath path) throws GridException {
  if (busyLock.enterBusy()) {
    try {
      A.notNull(path, "path");
      GridUuid nextId = meta.fileId(path);
      if (nextId == null)
        return 0;
      GridGgfsPathSummary sum = new GridGgfsPathSummary(path);
      summary0(nextId, sum);
      return sum.totalLength();
    }
    finally {
      busyLock.leaveBusy();
    }
  }
  else
    throw new IllegalStateException("Failed to get path size because Grid is stopping.");
}