/*
* Copyright 2005 JBoss Inc
*
* Licensed 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.drools.guvnor.server.files;
import java.io.ByteArrayOutputStream;
import java.io.IOException;
import javax.inject.Inject;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import org.drools.guvnor.client.common.HTMLFileManagerFields;
import org.drools.guvnor.server.util.FormData;
/**
* This is for dealing with assets that have an attachment (ie assets that are really an attachment).
*/
public class AssetFileServlet extends RepositoryServlet {
private static final long serialVersionUID = 510l;
@Inject
private FileManagerService fileManagerService;
/**
* Posting accepts content of various types -
* may be an attachement for an asset, or perhaps a repository import to process.
*/
protected void doPost(HttpServletRequest request,
HttpServletResponse response) throws ServletException,
IOException {
response.setContentType( "text/html" );
FormData uploadItem = FileManagerService.getFormData(request);
if ( uploadItem.getFile() != null && uploadItem.getUuid() != null ) {
//attaching to an asset.
response.getWriter().write( processAttachFileToAsset( uploadItem ) );
return;
}
response.getWriter().write( "NO-SCRIPT-DATA" );
}
/**
* doGet acting like a dispatcher.
*/
protected void doGet(HttpServletRequest req,
HttpServletResponse res) throws ServletException,
IOException {
String uuid = req.getParameter( HTMLFileManagerFields.FORM_FIELD_UUID );
if ( uuid != null ) {
processAttachmentDownload( uuid,
res );
} else {
res.sendError( HttpServletResponse.SC_BAD_REQUEST );
}
}
protected void processAttachmentDownload(String uuid,
HttpServletResponse response) throws IOException {
ByteArrayOutputStream output = new ByteArrayOutputStream();
String filename = fileManagerService.loadFileAttachmentByUUID( uuid,
output );
response.setContentType( "application/x-download" );
response.setHeader( "Content-Disposition",
"attachment; filename=" + filename + ";" );
response.setContentLength( output.size() );
response.getOutputStream().write( output.toByteArray() );
response.getOutputStream().flush();
}
private String processAttachFileToAsset(FormData uploadItem) throws IOException {
// If the file it doesn't exist.
if ( "".equals( uploadItem.getFile().getName() ) ) {
throw new IOException( "No file selected." );
}
fileManagerService.attachFile( uploadItem );
uploadItem.getFile().getInputStream().close();
return "OK";
}
}