com.caucho.v5.bartender.files.provider.JFileSystemProvider Maven / Gradle / Ivy
Go to download
Show more of this group Show more artifacts with this name
Show all versions of baratine Show documentation
Show all versions of baratine Show documentation
A reactive Java web server.
/*
* Copyright (c) 1998-2015 Caucho Technology -- all rights reserved
*
* This file is part of Baratine(TM)
*
* Each copy or derived work must preserve the copyright notice and this
* notice unmodified.
*
* Baratine is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* Baratine is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE, or any warranty
* of NON-INFRINGEMENT. See the GNU General Public License for more
* details.
*
* You should have received a copy of the GNU General Public License
* along with Baratine; if not, write to the
*
* Free Software Foundation, Inc.
* 59 Temple Place, Suite 330
* Boston, MA 02111-1307 USA
*
* @author Nam Nguyen
*/
package com.caucho.v5.bartender.files.provider;
import io.baratine.files.BfsFileSync;
import io.baratine.files.Status;
import io.baratine.files.WriteOption;
import io.baratine.service.ResultFuture;
import io.baratine.service.ServiceException;
import io.baratine.service.ServiceRef;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import java.net.URI;
import java.nio.channels.SeekableByteChannel;
import java.nio.file.AccessMode;
import java.nio.file.CopyOption;
import java.nio.file.DirectoryNotEmptyException;
import java.nio.file.DirectoryStream;
import java.nio.file.DirectoryStream.Filter;
import java.nio.file.FileStore;
import java.nio.file.FileSystem;
import java.nio.file.FileSystemNotFoundException;
import java.nio.file.LinkOption;
import java.nio.file.NoSuchFileException;
import java.nio.file.OpenOption;
import java.nio.file.Path;
import java.nio.file.StandardCopyOption;
import java.nio.file.StandardOpenOption;
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.ArrayList;
import java.util.Map;
import java.util.Set;
import java.util.concurrent.TimeUnit;
import com.caucho.v5.bartender.files.BartenderFileSystem;
import com.caucho.v5.io.IoUtil;
import com.caucho.v5.loader.EnvironmentLocal;
import com.caucho.v5.util.L10N;
/**
* BFS implementation of JDK FileSystemProvider.
*/
public class JFileSystemProvider extends FileSystemProvider
{
private static final L10N L = new L10N(JFileSystemProvider.class);
private static EnvironmentLocal _localSystem
= new EnvironmentLocal<>();
@Override
public String getScheme()
{
return "bfs";
}
@Override
public FileSystem newFileSystem(URI uri, Map env)
throws IOException
{
return getLocalSystem();
}
@Override
public FileSystem getFileSystem(URI uri)
{
return getLocalSystem();
}
@Override
public Path getPath(URI uri)
{
JFileSystem fileSystem = getLocalSystem();
String path = uri.toString();
return new JPath(fileSystem, path);
}
@Override
public SeekableByteChannel newByteChannel(Path path,
Set options,
FileAttribute... attrs)
throws IOException
{
JPath jPath = (JPath) path;
if (options.contains(StandardOpenOption.WRITE)) {
if (options.contains(StandardOpenOption.APPEND)) {
throw new UnsupportedOperationException();
}
// default for writes is StandOpenOption.TRUNCATE_EXISTING
OutputStream os = jPath.getBfsFile().openWrite(WriteOption.Standard.CLOSE_WAIT_FOR_PUT);
//OutputStream os = jPath.getBfsFile().openWrite();
return new JOutputByteChannel(jPath.getBfsFile(), os);
}
else {
// default is to read
InputStream is = jPath.getBfsFile().openRead();
if (is == null) {
throw new IOException(L.l("cannot open for reading: {0}", jPath.toUri()));
}
return new JInputByteChannel(jPath.getBfsFile(), is);
}
}
@Override
public DirectoryStream newDirectoryStream(Path dir,
Filter filter)
throws IOException
{
JPath jPath = (JPath) dir;
return new JDirectoryStream(jPath, filter);
}
@Override
public void createDirectory(Path dir, FileAttribute... attrs)
throws IOException
{
throw new UnsupportedOperationException(L.l("bfs does not support explicit directories"));
}
@Override
public void delete(Path path) throws IOException
{
JPath jPath = (JPath) path;
BfsFileSync file = jPath.getBfsFile();
ResultFuture result = new ResultFuture<>();
String []list = file.list();
if (list.length != 0) {
throw new DirectoryNotEmptyException(path.toUri().toString());
}
file.remove(result);
boolean isSuccessful;
try {
isSuccessful = result.get(10, TimeUnit.SECONDS);
}
catch (Exception e) {
if (e instanceof IOException) {
throw (IOException) e;
}
else {
if (e instanceof ServiceException) {
Throwable cause = ((ServiceException) e).unwrap();
if (cause instanceof IOException) {
throw (IOException) cause;
}
}
throw new IOException(e);
}
}
if (! isSuccessful) {
throw new IOException(L.l("failed to delete file: {0}", path));
}
}
@Override
public void copy(Path source, Path target, CopyOption... options)
throws IOException
{
JPath jSource = (JPath) source;
JPath jTarget = (JPath) target;
try (InputStream is = jSource.getBfsFile().openRead()) {
if (is == null) {
throw new IOException(L.l("unable to read from file {0}", source.toUri()));
}
ArrayList bfsOptionList = new ArrayList<>();
for (CopyOption option : options) {
if (option == StandardCopyOption.REPLACE_EXISTING) {
bfsOptionList.add(WriteOption.Standard.OVERWRITE);
}
}
WriteOption []bfsOptions = new WriteOption[bfsOptionList.size()];
bfsOptionList.toArray(bfsOptions);
try (OutputStream os = jTarget.getBfsFile().openWrite(bfsOptions)) {
if (os == null) {
throw new IOException(L.l("unable to write to file {0}", target.toUri()));
}
IoUtil.copy(is, os);
}
}
}
@Override
public void move(Path source, Path target, CopyOption... options)
throws IOException
{
JPath jPath = (JPath) target;
copy(source, target, options);
Status status = jPath.getBfsFile().getStatus();
if (status.getType() == Status.FileType.NULL) {
throw new IOException(L.l("unable to move {0} to {1}", source.toUri(), target.toUri()));
}
delete(source);
}
@Override
public boolean isSameFile(Path path, Path path2) throws IOException
{
return path.normalize().compareTo(path2.normalize()) == 0;
}
@Override
public boolean isHidden(Path path) throws IOException
{
return false;
}
@Override
public FileStore getFileStore(Path path) throws IOException
{
return new JFileStore(this);
}
@Override
public void checkAccess(Path path, AccessMode... modes) throws IOException
{
JPath jPath = (JPath) path;
Status status;
try {
status = jPath.getBfsFile().getStatus();
}
catch (Exception e) {
throw createIOException(e);
}
if (status.getType() == Status.FileType.FILE) {
// do nothing
}
else if (status.getType() == Status.FileType.DIRECTORY) {
// do nothing
}
else {
throw new NoSuchFileException(path.toUri().toString());
}
}
@Override
public V getFileAttributeView(Path path,
Class type,
LinkOption... options)
{
// TODO Auto-generated method stub
throw new UnsupportedOperationException();
}
@Override
public A readAttributes(Path path,
Class type,
LinkOption... options)
throws IOException
{
// TODO Auto-generated method stub
throw new UnsupportedOperationException();
}
@Override
public Map readAttributes(Path path, String attributes,
LinkOption... options)
throws IOException
{
// TODO Auto-generated method stub
throw new UnsupportedOperationException();
}
@Override
public void setAttribute(Path path, String attribute, Object value,
LinkOption... options) throws IOException
{
// TODO Auto-generated method stub
throw new UnsupportedOperationException();
}
@Override
public String toString()
{
return getClass().getSimpleName() + "[" + getLocalSystem() + "]";
}
private JFileSystem getLocalSystem()
{
synchronized (_localSystem) {
JFileSystem localSystem = _localSystem.getLevel();
if (localSystem == null) {
BartenderFileSystem fileSystem = BartenderFileSystem.getCurrent();
if (fileSystem == null) {
throw new FileSystemNotFoundException(L.l("cannot find local bfs file system"));
}
ServiceRef root = fileSystem.getRootServiceRef();
localSystem = new JFileSystem(this, root);
_localSystem.set(localSystem);
}
return localSystem;
}
}
static IOException createIOException(Throwable t)
{
if (t instanceof ServiceException) {
t = ((ServiceException) t).unwrap();
}
if (t instanceof IOException) {
return (IOException) t;
}
else {
return new IOException(t);
}
}
}
© 2015 - 2025 Weber Informatics LLC | Privacy Policy