/* ***** BEGIN LICENSE BLOCK *****
* Version: MPL 1.1/GPL 2.0/LGPL 2.1
*
* The contents of this file are subject to the Mozilla Public License Version
* 1.1 (the "License"); you may not use this file except in compliance with
* the License. You may obtain a copy of the License at
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*
* Software distributed under the License is distributed on an "AS IS" basis,
* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
* for the specific language governing rights and limitations under the
* License.
*
* The Original Code is part of dcm4che, an implementation of DICOM(TM) in
* Java(TM), hosted at https://github.com/gunterze/dcm4che.
*
* The Initial Developer of the Original Code is
* Agfa Healthcare.
* Portions created by the Initial Developer are Copyright (C) 2012-2014
* the Initial Developer. All Rights Reserved.
*
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* See @authors listed below
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package org.dcm4chee.storage.filesystem;
import org.dcm4chee.storage.ObjectAlreadyExistsException;
import org.dcm4chee.storage.ObjectNotFoundException;
import org.dcm4chee.storage.RetrieveContext;
import org.dcm4chee.storage.StorageContext;
import org.dcm4chee.storage.conf.StorageSystem;
import org.dcm4chee.storage.conf.SyncPolicy;
import org.dcm4chee.storage.spi.StorageSystemProvider;
import javax.enterprise.context.Dependent;
import javax.inject.Named;
import java.io.*;
import java.nio.channels.FileChannel;
import java.nio.file.*;
import java.util.List;
import java.util.Map;
/**
* @author Gunter Zeilinger<gunterze@gmail.com>
*
*/
@Named("org.dcm4chee.storage.filesystem")
@Dependent
public class FileSystemStorageSystemProvider implements StorageSystemProvider {
private StorageSystem storageSystem;
private Path basePath;
@Override
public Path getBaseDirectory(StorageSystem system) {
return basePath;
}
@Override
public void init(StorageSystem storageSystem) {
this.storageSystem = storageSystem;
this.basePath = Paths.get(storageSystem.getStorageSystemPath());
}
@Override
public void checkWriteable() throws IOException {
String path = storageSystem.getMountCheckFile();
if (path != null && Files.exists(basePath.resolve(path)))
throw new IOException("Mount check file: "
+ basePath.resolve(path) + " appears");
}
@Override
public long getUsableSpace() throws IOException {
return Files.getFileStore(basePath).getUsableSpace();
}
@Override
public long getTotalSpace() throws IOException {
return Files.getFileStore(basePath).getTotalSpace();
}
@Override
public OutputStream openOutputStream(final StorageContext context, String name)
throws IOException {
final Path path = basePath.resolve(name);
Files.createDirectories(path.getParent());
try {
BufferedOutputStream outputStream = new BufferedOutputStream(Files.newOutputStream(path, StandardOpenOption.CREATE_NEW), 65536);
return new FilterOutputStream(outputStream) {
@Override
public void close() throws IOException {
super.close();
context.setFileSize(Files.size(path));
}};
} catch (FileAlreadyExistsException e) {
throw new ObjectAlreadyExistsException(
storageSystem.getStorageSystemPath(), name, e);
}
}
@Override
public void copyInputStream(StorageContext context, InputStream source,
String name) throws IOException {
Path target = basePath.resolve(name);
Files.createDirectories(target.getParent());
try {
Files.copy(source, target);
} catch (FileAlreadyExistsException e) {
throw new ObjectAlreadyExistsException(
storageSystem.getStorageSystemPath(), name, e);
}
context.setFileSize(Files.size(target));
}
@Override
public void storeFile(StorageContext context, Path source, String name)
throws IOException {
Path target = basePath.resolve(name);
Files.createDirectories(target.getParent());
try {
Files.copy(source, target);
} catch (FileAlreadyExistsException e) {
throw new ObjectAlreadyExistsException(
storageSystem.getStorageSystemPath(), name, e);
}
context.setFileSize(Files.size(target));
}
@Override
public void moveFile(StorageContext context, Path source, String name)
throws IOException {
Path target = basePath.resolve(name);
Files.createDirectories(target.getParent());
try {
Files.move(source, target);
} catch (FileAlreadyExistsException e) {
throw new ObjectAlreadyExistsException(
storageSystem.getStorageSystemPath(), name, e);
}
context.setFileSize(Files.size(target));
}
@Override
public InputStream openInputStream(RetrieveContext ctx, String name)
throws IOException {
Path path = basePath.resolve(name);
try {
return Files.newInputStream(path);
} catch (NoSuchFileException e) {
throw new ObjectNotFoundException(
storageSystem.getStorageSystemPath(), name, e);
}
}
@Override
public Path getFile(RetrieveContext ctx, String name) throws IOException {
Path path = basePath.resolve(name);
if (!Files.exists(path))
throw new ObjectNotFoundException(
storageSystem.getStorageSystemPath(), name);
return path;
}
@Override
public void deleteObject(StorageContext ctx, String name) throws IOException {
Path path = basePath.resolve(name);
try {
Files.delete(path);
} catch (NoSuchFileException e) {
throw new ObjectNotFoundException(
storageSystem.getStorageSystemPath(), name, e);
}
try {
Path dir = path.getParent();
while (!basePath.equals(dir)) {
Files.delete(dir);
dir = dir.getParent();
}
} catch (DirectoryNotEmptyException e) {}
}
@Override
public <E extends Enum<E>> E queryStatus(RetrieveContext ctx, String name,
Class<E> enumType) throws IOException {
Map<String, String> statusFileExtensions = ctx.getStorageSystem()
.getStatusFileExtensions();
for (String ext : statusFileExtensions.keySet()) {
Path path = basePath.resolve(name + ext);
if (Files.exists(path))
return Enum.valueOf(enumType, statusFileExtensions.get(ext));
}
return null;
}
@Override
public void sync (List<String> names) throws IOException {
if (names == null)
return;
for (String name : names) {
Path target = basePath.resolve(name);
FileChannel targetChannel = new RandomAccessFile(target.toFile(), "rw").getChannel();
targetChannel.force(true); //sync
targetChannel.close();
}
}
}