Examples with RenameEntry alluxio.proto.journal.File.RenameEntry used on opensource projects

Example 1 with RenameEntry

use of alluxio.proto.journal.File.RenameEntry in project alluxio by Alluxio.

the class FileSystemMaster method renameAndJournal.

/**
   * Renames a file to a destination.
   * <p>
   * Writes to the journal.
   *
   * @param srcInodePath the source path to rename
   * @param dstInodePath the destination path to rename the file to
   * @param options method options
   * @param journalContext the journalContext
   * @throws InvalidPathException if an invalid path is encountered
   * @throws FileDoesNotExistException if a non-existent file is encountered
   * @throws FileAlreadyExistsException if the file already exists
   * @throws IOException if an I/O error occurs
   */
private void renameAndJournal(LockedInodePath srcInodePath, LockedInodePath dstInodePath, RenameOptions options, JournalContext journalContext) throws InvalidPathException, FileDoesNotExistException, FileAlreadyExistsException, IOException {
    if (!srcInodePath.fullPathExists()) {
        throw new FileDoesNotExistException(ExceptionMessage.PATH_DOES_NOT_EXIST.getMessage(srcInodePath.getUri()));
    }
    Inode<?> srcInode = srcInodePath.getInode();
    // Renaming path to itself is a no-op.
    if (srcInodePath.getUri().equals(dstInodePath.getUri())) {
        return;
    }
    // Renaming the root is not allowed.
    if (srcInodePath.getUri().isRoot()) {
        throw new InvalidPathException(ExceptionMessage.ROOT_CANNOT_BE_RENAMED.getMessage());
    }
    if (dstInodePath.getUri().isRoot()) {
        throw new InvalidPathException(ExceptionMessage.RENAME_CANNOT_BE_TO_ROOT.getMessage());
    }
    // Renaming across mount points is not allowed.
    String srcMount = mMountTable.getMountPoint(srcInodePath.getUri());
    String dstMount = mMountTable.getMountPoint(dstInodePath.getUri());
    if ((srcMount == null && dstMount != null) || (srcMount != null && dstMount == null) || (srcMount != null && dstMount != null && !srcMount.equals(dstMount))) {
        throw new InvalidPathException(ExceptionMessage.RENAME_CANNOT_BE_ACROSS_MOUNTS.getMessage(srcInodePath.getUri(), dstInodePath.getUri()));
    }
    // Renaming onto a mount point is not allowed.
    if (mMountTable.isMountPoint(dstInodePath.getUri())) {
        throw new InvalidPathException(ExceptionMessage.RENAME_CANNOT_BE_ONTO_MOUNT_POINT.getMessage(dstInodePath.getUri()));
    }
    // srcComponents isn't a prefix of dstComponents.
    if (PathUtils.hasPrefix(dstInodePath.getUri().getPath(), srcInodePath.getUri().getPath())) {
        throw new InvalidPathException(ExceptionMessage.RENAME_CANNOT_BE_TO_SUBDIRECTORY.getMessage(srcInodePath.getUri(), dstInodePath.getUri()));
    }
    // Get the inodes of the src and dst parents.
    Inode<?> srcParentInode = srcInodePath.getParentInodeDirectory();
    if (!srcParentInode.isDirectory()) {
        throw new InvalidPathException(ExceptionMessage.PATH_MUST_HAVE_VALID_PARENT.getMessage(srcInodePath.getUri()));
    }
    Inode<?> dstParentInode = dstInodePath.getParentInodeDirectory();
    if (!dstParentInode.isDirectory()) {
        throw new InvalidPathException(ExceptionMessage.PATH_MUST_HAVE_VALID_PARENT.getMessage(dstInodePath.getUri()));
    }
    // Make sure destination path does not exist
    if (dstInodePath.fullPathExists()) {
        throw new FileAlreadyExistsException(ExceptionMessage.FILE_ALREADY_EXISTS.getMessage(dstInodePath.getUri()));
    }
    // Now we remove srcInode from its parent and insert it into dstPath's parent
    renameInternal(srcInodePath, dstInodePath, false, options);
    List<Inode<?>> persistedInodes = propagatePersistedInternal(srcInodePath, false);
    journalPersistedInodes(persistedInodes, journalContext);
    RenameEntry rename = RenameEntry.newBuilder().setId(srcInode.getId()).setDstPath(dstInodePath.getUri().getPath()).setOpTimeMs(options.getOperationTimeMs()).build();
    appendJournalEntry(JournalEntry.newBuilder().setRename(rename).build(), journalContext);
}