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/*
* 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)));
}
}