Examples with TempInodePathForChild alluxio.master.file.meta.TempInodePathForChild used on opensource projects

Example 1 with TempInodePathForChild

use of alluxio.master.file.meta.TempInodePathForChild in project alluxio by Alluxio.

the class FileSystemMaster method loadMetadataAndJournal.

/**
   * Loads metadata for the object identified by the given path from UFS into Alluxio.
   * <p>
   * Writes to the journal.
   *
   * @param inodePath the path for which metadata should be loaded
   * @param options the load metadata options
   * @param journalContext the journal context
   * @throws InvalidPathException if invalid path is encountered
   * @throws FileDoesNotExistException if there is no UFS path
   * @throws BlockInfoException if an invalid block size is encountered
   * @throws FileAlreadyCompletedException if the file is already completed
   * @throws InvalidFileSizeException if invalid file size is encountered
   * @throws AccessControlException if permission checking fails
   * @throws IOException if an I/O error occurs
   */
private void loadMetadataAndJournal(LockedInodePath inodePath, LoadMetadataOptions options, JournalContext journalContext) throws InvalidPathException, FileDoesNotExistException, BlockInfoException, FileAlreadyCompletedException, InvalidFileSizeException, AccessControlException, IOException {
    AlluxioURI path = inodePath.getUri();
    MountTable.Resolution resolution = mMountTable.resolve(path);
    AlluxioURI ufsUri = resolution.getUri();
    UnderFileSystem ufs = resolution.getUfs();
    try {
        if (options.getUnderFileStatus() == null && !ufs.exists(ufsUri.toString())) {
            // uri does not exist in ufs
            InodeDirectory inode = (InodeDirectory) inodePath.getInode();
            inode.setDirectChildrenLoaded(true);
        }
        boolean isFile;
        if (options.getUnderFileStatus() != null) {
            isFile = options.getUnderFileStatus().isFile();
        } else {
            isFile = ufs.isFile(ufsUri.toString());
        }
        if (isFile) {
            loadFileMetadataAndJournal(inodePath, resolution, options, journalContext);
        } else {
            loadDirectoryMetadataAndJournal(inodePath, options, journalContext);
            InodeDirectory inode = (InodeDirectory) inodePath.getInode();
            if (options.isLoadDirectChildren()) {
                UnderFileStatus[] files = ufs.listStatus(ufsUri.toString());
                for (UnderFileStatus file : files) {
                    if (PathUtils.isTemporaryFileName(file.getName()) || inode.getChild(file.getName()) != null) {
                        continue;
                    }
                    TempInodePathForChild tempInodePath = new TempInodePathForChild(inodePath, file.getName());
                    LoadMetadataOptions loadMetadataOptions = LoadMetadataOptions.defaults().setLoadDirectChildren(false).setCreateAncestors(false).setUnderFileStatus(file);
                    loadMetadataAndJournal(tempInodePath, loadMetadataOptions, journalContext);
                }
                inode.setDirectChildrenLoaded(true);
            }
        }
    } catch (IOException e) {
        LOG.error(ExceptionUtils.getStackTrace(e));
        throw e;
    }
}