Examples with MountInfo alluxio.master.file.meta.options.MountInfo used on opensource projects

Example 6 with MountInfo

use of alluxio.master.file.meta.options.MountInfo in project alluxio by Alluxio.

the class MountTable method add.

/**
   * Mounts the given UFS path at the given Alluxio path. The Alluxio path should not be nested
   * under an existing mount point.
   *
   * @param alluxioUri an Alluxio path URI
   * @param ufsUri a UFS path URI
   * @param options the mount options
   * @throws FileAlreadyExistsException if the mount point already exists
   * @throws InvalidPathException if an invalid path is encountered
   */
public void add(AlluxioURI alluxioUri, AlluxioURI ufsUri, MountOptions options) throws FileAlreadyExistsException, InvalidPathException {
    String alluxioPath = alluxioUri.getPath();
    LOG.info("Mounting {} at {}", ufsUri, alluxioPath);
    try (LockResource r = new LockResource(mWriteLock)) {
        if (mMountTable.containsKey(alluxioPath)) {
            throw new FileAlreadyExistsException(ExceptionMessage.MOUNT_POINT_ALREADY_EXISTS.getMessage(alluxioPath));
        }
        // or suffix of any existing mount path.
        for (Map.Entry<String, MountInfo> entry : mMountTable.entrySet()) {
            String mountedAlluxioPath = entry.getKey();
            AlluxioURI mountedUfsUri = entry.getValue().getUfsUri();
            if (!mountedAlluxioPath.equals(ROOT) && PathUtils.hasPrefix(alluxioPath, mountedAlluxioPath)) {
                throw new InvalidPathException(ExceptionMessage.MOUNT_POINT_PREFIX_OF_ANOTHER.getMessage(mountedAlluxioPath, alluxioPath));
            }
            if ((ufsUri.getScheme() == null || ufsUri.getScheme().equals(mountedUfsUri.getScheme())) && (ufsUri.getAuthority() == null || ufsUri.getAuthority().equals(mountedUfsUri.getAuthority()))) {
                String ufsPath = ufsUri.getPath();
                String mountedUfsPath = mountedUfsUri.getPath();
                if (PathUtils.hasPrefix(ufsPath, mountedUfsPath)) {
                    throw new InvalidPathException(ExceptionMessage.MOUNT_POINT_PREFIX_OF_ANOTHER.getMessage(mountedUfsUri.toString(), ufsUri.toString()));
                }
                if (PathUtils.hasPrefix(mountedUfsPath, ufsPath)) {
                    throw new InvalidPathException(ExceptionMessage.MOUNT_POINT_PREFIX_OF_ANOTHER.getMessage(ufsUri.toString(), mountedUfsUri.toString()));
                }
            }
        }
        mMountTable.put(alluxioPath, new MountInfo(ufsUri, options));
    }
}

Example 7 with MountInfo

use of alluxio.master.file.meta.options.MountInfo in project alluxio by Alluxio.

the class MountTable method streamToJournalCheckpoint.

@Override
public void streamToJournalCheckpoint(JournalOutputStream outputStream) throws IOException {
    for (Map.Entry<String, MountInfo> entry : mMountTable.entrySet()) {
        String alluxioPath = entry.getKey();
        MountInfo info = entry.getValue();
        // do not journal the root mount point
        if (alluxioPath.equals(ROOT)) {
            continue;
        }
        Map<String, String> properties = info.getOptions().getProperties();
        List<File.StringPairEntry> protoProperties = new ArrayList<>(properties.size());
        for (Map.Entry<String, String> property : properties.entrySet()) {
            protoProperties.add(File.StringPairEntry.newBuilder().setKey(property.getKey()).setValue(property.getValue()).build());
        }
        AddMountPointEntry addMountPoint = AddMountPointEntry.newBuilder().setAlluxioPath(alluxioPath).setUfsPath(info.getUfsUri().toString()).setReadOnly(info.getOptions().isReadOnly()).addAllProperties(protoProperties).setShared(info.getOptions().isShared()).build();
        Journal.JournalEntry journalEntry = Journal.JournalEntry.newBuilder().setAddMountPoint(addMountPoint).build();
        outputStream.writeEntry(journalEntry);
    }
}