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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.tuscany.sca.domain.manager.impl;
import java.io.File;
import java.io.FileNotFoundException;
import java.io.IOException;
import java.io.InputStream;
import java.net.URI;
import java.net.URLConnection;
import java.net.URLDecoder;
import java.util.List;
import java.util.logging.Logger;
import javax.servlet.Servlet;
import javax.servlet.ServletException;
import javax.servlet.ServletOutputStream;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import org.apache.commons.fileupload.FileItem;
import org.apache.commons.fileupload.disk.DiskFileItemFactory;
import org.apache.commons.fileupload.servlet.ServletFileUpload;
import org.apache.tuscany.sca.data.collection.Item;
import org.apache.tuscany.sca.data.collection.LocalItemCollection;
import org.apache.tuscany.sca.data.collection.NotFoundException;
import org.osoa.sca.annotations.Init;
import org.osoa.sca.annotations.Property;
import org.osoa.sca.annotations.Reference;
import org.osoa.sca.annotations.Scope;
import org.osoa.sca.annotations.Service;
/**
* Implementation of a servlet component supporting file upload/download.
*
* @version $Rev$ $Date$
*/
@Scope("COMPOSITE")
@Service(Servlet.class)
public class FileServiceImpl extends HttpServlet {
private static final long serialVersionUID = -4560385595481971616L;
private static final Logger logger = Logger.getLogger(FileServiceImpl.class
.getName());
@Property
public String directoryName;
@Reference
public DomainManagerConfiguration domainManagerConfiguration;
@Reference
public LocalItemCollection contributionCollection;
private ServletFileUpload upload;
/**
* Initialize the component.
*/
@Init
public void initialize() throws IOException {
upload = new ServletFileUpload(new DiskFileItemFactory());
}
@Override
public void doPost(HttpServletRequest request, HttpServletResponse response)
throws IOException {
// Upload files
String rootDirectory = domainManagerConfiguration.getRootDirectory();
try {
for (FileItem item : (List<FileItem>) upload.parseRequest(request)) {
if (!item.isFormField()) {
File directory = new File(rootDirectory + "/"
+ directoryName);
if (!directory.exists()) {
directory.mkdirs();
}
logger.fine("post " + item.getName());
item.write(new File(directory, item.getName()));
}
}
// Redirect to the admin page
response.sendRedirect("/ui/files");
} catch (Exception e) {
throw new IOException(e.toString());
}
}
@Override
protected void doGet(HttpServletRequest request,
HttpServletResponse response) throws ServletException, IOException {
// Download a file
String requestURI = URLDecoder.decode(request.getRequestURI(), "UTF-8");
String path = requestURI.substring(request.getServletPath().length());
if (path.startsWith("/")) {
path = path.substring(1);
}
logger.fine("get " + path);
try {
// Analyze the given path
String artifactURI;
if (path.startsWith("contribution=")) {
int semicolonIndex = path.indexOf(';');
String contributionName = path.substring("contribution="
.length(), semicolonIndex);
artifactURI = path.substring(semicolonIndex + 1);
try {
Item item = this.contributionCollection
.get(contributionName);
if (item == null) {
response.sendError(HttpServletResponse.SC_NOT_FOUND);
return;
}
path = item.getAlternate();
} catch (NotFoundException e) {
response.sendError(HttpServletResponse.SC_NOT_FOUND);
return;
}
if (path.endsWith(".jar") || path.endsWith(".zip")) {
path = "jar:" + (path.startsWith("file:") ? "" : "file:") + path + '!' + (artifactURI.startsWith("/") ? "" : "/") + artifactURI;
} else {
path += (path.endsWith("/") ? "" : "/") + artifactURI;
}
} else {
artifactURI = null;
}
URI uri = URI.create(path);
String scheme = uri.getScheme();
if (scheme == null) {
if (artifactURI != null) {
uri = URI.create("file:" + uri.toString());
} else {
// If no scheme is specified then the path identifies file
// inside our directory
String rootDirectory = domainManagerConfiguration
.getRootDirectory();
uri = new File(rootDirectory + "/" + directoryName, path)
.toURI();
}
} else if (!scheme.equals("file") && !scheme.equals("jar")) {
// If the scheme does not identify a local file, just redirect
// to the server
// hosting the file
response.sendRedirect(path);
}
// Read the file and write to response
URLConnection connection = uri.toURL().openConnection();
connection.setUseCaches(false);
connection.connect();
InputStream is = connection.getInputStream();
ServletOutputStream os = response.getOutputStream();
byte[] buffer = new byte[4096];
for (;;) {
int n = is.read(buffer);
if (n < 0) {
break;
}
os.write(buffer, 0, n);
}
is.close();
os.flush();
} catch (FileNotFoundException e) {
response.sendError(HttpServletResponse.SC_NOT_FOUND);
}
}
}
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