| /* |
| * Licensed to the Apache Software Foundation (ASF) under one |
| * or more contributor license agreements. See the NOTICE file |
| * distributed with this work for additional information |
| * regarding copyright ownership. The ASF licenses this file |
| * to you under the Apache License, Version 2.0 (the |
| * "License"); you may not use this file except in compliance |
| * with the License. You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| |
| package org.apache.cassandra.io.filesystem; |
| |
| import java.io.IOException; |
| import java.io.InputStream; |
| import java.io.OutputStream; |
| import java.net.URI; |
| import java.nio.channels.AsynchronousFileChannel; |
| import java.nio.channels.FileChannel; |
| import java.nio.channels.SeekableByteChannel; |
| import java.nio.file.AccessMode; |
| import java.nio.file.CopyOption; |
| import java.nio.file.DirectoryStream; |
| import java.nio.file.FileStore; |
| import java.nio.file.FileSystem; |
| import java.nio.file.LinkOption; |
| import java.nio.file.OpenOption; |
| import java.nio.file.Path; |
| import java.nio.file.attribute.BasicFileAttributes; |
| import java.nio.file.attribute.FileAttribute; |
| import java.nio.file.attribute.FileAttributeView; |
| import java.nio.file.spi.FileSystemProvider; |
| import java.util.Iterator; |
| import java.util.Map; |
| import java.util.Set; |
| import java.util.concurrent.ExecutorService; |
| |
| import com.google.common.collect.Iterators; |
| |
| public class ForwardingFileSystemProvider extends FileSystemProvider |
| { |
| protected final FileSystemProvider delegate; |
| |
| public ForwardingFileSystemProvider(FileSystemProvider delegate) |
| { |
| this.delegate = delegate; |
| } |
| |
| protected FileSystemProvider delegate() |
| { |
| return delegate; |
| } |
| |
| protected Path wrap(Path p) |
| { |
| return p; |
| } |
| |
| protected Path unwrap(Path p) |
| { |
| return p; |
| } |
| |
| @Override |
| public String getScheme() |
| { |
| return delegate().getScheme(); |
| } |
| |
| @Override |
| public FileSystem newFileSystem(URI uri, Map<String, ?> env) throws IOException |
| { |
| return delegate().newFileSystem(uri, env); |
| } |
| |
| @Override |
| public FileSystem getFileSystem(URI uri) |
| { |
| return delegate().getFileSystem(uri); |
| } |
| |
| @Override |
| public Path getPath(URI uri) |
| { |
| return wrap(delegate().getPath(uri)); |
| } |
| |
| @Override |
| public SeekableByteChannel newByteChannel(Path path, Set<? extends OpenOption> options, FileAttribute<?>... attrs) throws IOException |
| { |
| return delegate().newByteChannel(unwrap(path), options, attrs); |
| } |
| |
| @Override |
| public DirectoryStream<Path> newDirectoryStream(Path dir, DirectoryStream.Filter<? super Path> filter) throws IOException |
| { |
| DirectoryStream<Path> stream = delegate().newDirectoryStream(unwrap(dir), filter); |
| return new DirectoryStream<Path>() |
| { |
| @Override |
| public Iterator<Path> iterator() |
| { |
| return Iterators.transform(stream.iterator(), ForwardingFileSystemProvider.this::wrap); |
| } |
| |
| @Override |
| public void close() throws IOException |
| { |
| stream.close(); |
| } |
| }; |
| } |
| |
| @Override |
| public void createDirectory(Path dir, FileAttribute<?>... attrs) throws IOException |
| { |
| delegate().createDirectory(unwrap(dir), attrs); |
| } |
| |
| @Override |
| public void delete(Path path) throws IOException |
| { |
| delegate().delete(unwrap(path)); |
| } |
| |
| @Override |
| public void copy(Path source, Path target, CopyOption... options) throws IOException |
| { |
| delegate().copy(unwrap(source), unwrap(target), options); |
| } |
| |
| @Override |
| public void move(Path source, Path target, CopyOption... options) throws IOException |
| { |
| delegate().move(unwrap(source), unwrap(target), options); |
| } |
| |
| @Override |
| public boolean isSameFile(Path path, Path path2) throws IOException |
| { |
| return delegate().isSameFile(unwrap(path), unwrap(path2)); |
| } |
| |
| @Override |
| public boolean isHidden(Path path) throws IOException |
| { |
| return delegate().isHidden(unwrap(path)); |
| } |
| |
| @Override |
| public FileStore getFileStore(Path path) throws IOException |
| { |
| return delegate().getFileStore(unwrap(path)); |
| } |
| |
| @Override |
| public void checkAccess(Path path, AccessMode... modes) throws IOException |
| { |
| delegate().checkAccess(unwrap(path), modes); |
| } |
| |
| @Override |
| public <V extends FileAttributeView> V getFileAttributeView(Path path, Class<V> type, LinkOption... options) |
| { |
| return delegate().getFileAttributeView(unwrap(path), type, options); |
| } |
| |
| @Override |
| public <A extends BasicFileAttributes> A readAttributes(Path path, Class<A> type, LinkOption... options) throws IOException |
| { |
| return delegate().readAttributes(unwrap(path), type, options); |
| } |
| |
| @Override |
| public Map<String, Object> readAttributes(Path path, String attributes, LinkOption... options) throws IOException |
| { |
| return delegate().readAttributes(unwrap(path), attributes, options); |
| } |
| |
| @Override |
| public void setAttribute(Path path, String attribute, Object value, LinkOption... options) throws IOException |
| { |
| delegate().setAttribute(unwrap(path), attribute, value, options); |
| } |
| |
| @Override |
| public FileSystem newFileSystem(Path path, Map<String, ?> env) throws IOException |
| { |
| return delegate().newFileSystem(unwrap(path), env); |
| } |
| |
| @Override |
| public InputStream newInputStream(Path path, OpenOption... options) throws IOException |
| { |
| return delegate().newInputStream(unwrap(path), options); |
| } |
| |
| @Override |
| public OutputStream newOutputStream(Path path, OpenOption... options) throws IOException |
| { |
| return delegate().newOutputStream(unwrap(path), options); |
| } |
| |
| @Override |
| public FileChannel newFileChannel(Path path, Set<? extends OpenOption> options, FileAttribute<?>... attrs) throws IOException |
| { |
| return delegate().newFileChannel(unwrap(path), options, attrs); |
| } |
| |
| @Override |
| public AsynchronousFileChannel newAsynchronousFileChannel(Path path, Set<? extends OpenOption> options, ExecutorService executor, FileAttribute<?>... attrs) throws IOException |
| { |
| return delegate().newAsynchronousFileChannel(unwrap(path), options, executor, attrs); |
| } |
| |
| @Override |
| public void createSymbolicLink(Path link, Path target, FileAttribute<?>... attrs) throws IOException |
| { |
| delegate().createSymbolicLink(unwrap(link), target, attrs); |
| } |
| |
| @Override |
| public void createLink(Path link, Path existing) throws IOException |
| { |
| delegate().createLink(unwrap(link), unwrap(existing)); |
| } |
| |
| @Override |
| public boolean deleteIfExists(Path path) throws IOException |
| { |
| return delegate().deleteIfExists(unwrap(path)); |
| } |
| |
| @Override |
| public Path readSymbolicLink(Path link) throws IOException |
| { |
| return wrap(delegate().readSymbolicLink(unwrap(link))); |
| } |
| } |