edu.umd.cs.submitServer.servlets.UploadTestSetup.java Source code

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Here is the source code for edu.umd.cs.submitServer.servlets.UploadTestSetup.java

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/**
 * Marmoset: a student project snapshot, submission, testing and code review
 * system developed by the Univ. of Maryland, College Park
 * 
 * Developed as part of Jaime Spacco's Ph.D. thesis work, continuing effort led
 * by William Pugh. See http://marmoset.cs.umd.edu/
 * 
 * Copyright 2005 - 2011, Univ. of Maryland
 * 
 * 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.
 * 
 */

/*
 * Created on Jan 17, 2005
 *
 * @author jspacco
 */
package edu.umd.cs.submitServer.servlets;

import java.io.ByteArrayOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.sql.Connection;
import java.sql.SQLException;

import javax.servlet.ServletException;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

import metadata.identification.FormatDescription;
import metadata.identification.FormatIdentification;

import org.apache.commons.fileupload.FileItem;

import edu.umd.cs.marmoset.modelClasses.IO;
import edu.umd.cs.marmoset.modelClasses.Project;
import edu.umd.cs.marmoset.modelClasses.Submission;
import edu.umd.cs.marmoset.modelClasses.TestSetup;
import edu.umd.cs.submitServer.MultipartRequest;
import edu.umd.cs.submitServer.util.WaitingBuildServer;

/**
 * @author jspacco
 * 
 */
public class UploadTestSetup extends SubmitServerServlet {

    @Override
    public void doPost(HttpServletRequest request, HttpServletResponse response)
            throws ServletException, IOException {
        // TODO sanity checks on the format of the test setup
        MultipartRequest multipartRequest = (MultipartRequest) request.getAttribute(MULTIPART_REQUEST);
        Connection conn = null;
        FileItem fileItem = null;
        boolean transactionSuccess = false;
        try {
            conn = getConnection();

            fileItem = multipartRequest.getFileItem();
            if (fileItem == null)
                throw new ServletException("fileItem is null; this is not good");

            Project project = (Project) request.getAttribute(PROJECT);
            // could be null
            String comment = multipartRequest.getOptionalCheckedParameter("comment");

            // get size in bytes
            long sizeInBytes = fileItem.getSize();
            if (sizeInBytes == 0) {
                throw new ServletException("Trying upload file of size 0");
            }

            // copy the fileItem into a byte array
            InputStream is = fileItem.getInputStream();
            ByteArrayOutputStream bytes = new ByteArrayOutputStream((int) sizeInBytes);
            IO.copyStream(is, bytes);

            byte[] byteArray = bytes.toByteArray();

            FormatDescription desc = FormatIdentification.identify(byteArray);
            if (desc == null || !desc.getMimeType().equals("application/zip")) {
                response.sendError(HttpServletResponse.SC_BAD_REQUEST,
                        "You MUST submit test-setups that are either zipped or jarred");
                return;
            }
            Submission canonicalSubmission = Submission
                    .lookupMostRecent(project.getCanonicalStudentRegistrationPK(), project.getProjectPK(), conn);
            // start transaction here
            conn.setAutoCommit(false);
            conn.setTransactionIsolation(Connection.TRANSACTION_REPEATABLE_READ);
            TestSetup.submit(byteArray, project, comment, conn);
            conn.commit();
            transactionSuccess = true;
            if (canonicalSubmission != null
                    && canonicalSubmission.getBuildStatus() != Submission.BuildStatus.BROKEN) {
                WaitingBuildServer.offerSubmission(project, canonicalSubmission);
            }

            String redirectUrl = request.getContextPath() + "/view/instructor/projectUtilities.jsp?projectPK="
                    + project.getProjectPK();
            response.sendRedirect(redirectUrl);

        } catch (SQLException e) {
            throw new ServletException(e);
        } finally {
            rollbackIfUnsuccessfulAndAlwaysReleaseConnection(transactionSuccess, request, conn);
            releaseConnection(conn);
            if (fileItem != null)
                fileItem.delete();
        }
    }

}