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

Example 1 with InodePathPair

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

the class FileSystemMaster method rename.

/**
   * Renames a file to a destination.
   * <p>
   * This operation requires users to have
   * {@link Mode.Bits#WRITE} permission on the parent of the src path, and
   * {@link Mode.Bits#WRITE} permission on the parent of the dst path.
   *
   * @param srcPath the source path to rename
   * @param dstPath the destination path to rename the file to
   * @param options method options
   * @throws FileDoesNotExistException if a non-existent file is encountered
   * @throws InvalidPathException if an invalid path is encountered
   * @throws IOException if an I/O error occurs
   * @throws AccessControlException if permission checking fails
   * @throws FileAlreadyExistsException if the file already exists
   */
public void rename(AlluxioURI srcPath, AlluxioURI dstPath, RenameOptions options) throws FileAlreadyExistsException, FileDoesNotExistException, InvalidPathException, IOException, AccessControlException {
    Metrics.RENAME_PATH_OPS.inc();
    // modify operations on the parent inodes are thread safe so WRITE locks are not required.
    try (JournalContext journalContext = createJournalContext();
        InodePathPair inodePathPair = mInodeTree.lockInodePathPair(srcPath, InodeTree.LockMode.WRITE, dstPath, InodeTree.LockMode.READ)) {
        LockedInodePath srcInodePath = inodePathPair.getFirst();
        LockedInodePath dstInodePath = inodePathPair.getSecond();
        mPermissionChecker.checkParentPermission(Mode.Bits.WRITE, srcInodePath);
        mPermissionChecker.checkParentPermission(Mode.Bits.WRITE, dstInodePath);
        mMountTable.checkUnderWritableMountPoint(srcPath);
        mMountTable.checkUnderWritableMountPoint(dstPath);
        renameAndJournal(srcInodePath, dstInodePath, options, journalContext);
        LOG.debug("Renamed {} to {}", srcPath, dstPath);
    }
}

Example 2 with InodePathPair

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

the class FileSystemMaster method renameFromEntry.

/**
   * @param entry the entry to use
   */
private void renameFromEntry(RenameEntry entry) {
    Metrics.RENAME_PATH_OPS.inc();
    // Determine the srcPath and dstPath
    AlluxioURI srcPath;
    try (LockedInodePath inodePath = mInodeTree.lockFullInodePath(entry.getId(), InodeTree.LockMode.READ)) {
        srcPath = inodePath.getUri();
    } catch (Exception e) {
        throw new RuntimeException(e);
    }
    AlluxioURI dstPath = new AlluxioURI(entry.getDstPath());
    // Both src and dst paths should lock WRITE_PARENT, to modify the parent inodes for both paths.
    try (InodePathPair inodePathPair = mInodeTree.lockInodePathPair(srcPath, InodeTree.LockMode.WRITE_PARENT, dstPath, InodeTree.LockMode.WRITE_PARENT)) {
        LockedInodePath srcInodePath = inodePathPair.getFirst();
        LockedInodePath dstInodePath = inodePathPair.getSecond();
        RenameOptions options = RenameOptions.defaults().setOperationTimeMs(entry.getOpTimeMs());
        renameInternal(srcInodePath, dstInodePath, true, options);
    } catch (Exception e) {
        throw new RuntimeException(e);
    }
}