137 lines
4.4 KiB
Java
137 lines
4.4 KiB
Java
/**
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*
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*/
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package org.gcube.portlets.user.td.gwtservice.server;
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import java.io.ByteArrayOutputStream;
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import java.io.FileInputStream;
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import java.io.IOException;
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import java.nio.charset.Charset;
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import java.util.Enumeration;
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import javax.servlet.ServletException;
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import javax.servlet.http.HttpServlet;
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import javax.servlet.http.HttpServletRequest;
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import javax.servlet.http.HttpServletResponse;
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import javax.servlet.http.HttpSession;
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import org.gcube.portlets.user.td.gwtservice.server.file.CSVFileUploadSession;
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import org.gcube.portlets.user.td.gwtservice.server.util.ServiceCredentials;
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import org.gcube.portlets.user.td.gwtservice.shared.Constants;
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import org.gcube.portlets.user.td.gwtservice.shared.csv.CSVFileUtil;
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import org.gcube.portlets.user.td.gwtservice.shared.exception.TDGWTServiceException;
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import org.slf4j.Logger;
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import org.slf4j.LoggerFactory;
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/**
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* Returns a representation of the csv file in JSON
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*
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* @author "Giancarlo Panichi" <a
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* href="mailto:g.panichi@isti.cnr.it">g.panichi@isti.cnr.it</a>
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*
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*/
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public class CSVImportFileServlet extends HttpServlet {
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private static Logger logger = LoggerFactory
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.getLogger(CSVImportFileServlet.class);
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/**
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*
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*/
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private static final long serialVersionUID = -4197748678713054285L;
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protected void doPost(HttpServletRequest req, HttpServletResponse resp)
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throws ServletException, IOException {
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handleRequest(req, resp);
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}
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protected void doGet(HttpServletRequest req, HttpServletResponse resp)
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throws ServletException, IOException {
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handleRequest(req, resp);
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}
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protected void handleRequest(HttpServletRequest request,
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HttpServletResponse response) throws ServletException, IOException {
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logger.info("CSVImportFileServlet");
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long startTime = System.currentTimeMillis();
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logger.debug("Request Headers: ");
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Enumeration<String> headers=request.getHeaderNames();
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while(headers.hasMoreElements()){
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String hName=headers.nextElement();
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logger.debug("Header: "+hName+" = "+request.getHeader(hName));
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}
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HttpSession session = request.getSession();
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if (session == null) {
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logger.error("Error getting the upload session, no session valid found: "
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+ session);
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response.sendError(HttpServletResponse.SC_INTERNAL_SERVER_ERROR,
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"ERROR-Error getting the user session, no session found"
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+ session);
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return;
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}
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logger.info("CSVImportFileServlet import session id: "
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+ session.getId());
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ServiceCredentials serviceCredentials;
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String scopeGroupId = request.getHeader(Constants.CURR_GROUP_ID);
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if (scopeGroupId == null || scopeGroupId.isEmpty()) {
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scopeGroupId = request.getParameter(Constants.CURR_GROUP_ID);
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if (scopeGroupId == null || scopeGroupId.isEmpty()) {
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logger.error("CURR_GROUP_ID is null, it is a mandatory parameter in custom servlet: "
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+ scopeGroupId);
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throw new ServletException(
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"CURR_GROUP_ID is null, it is a mandatory parameter in custom servlet: "
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+ scopeGroupId);
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}
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}
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try {
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serviceCredentials = SessionUtil.getServiceCredentials(request,
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scopeGroupId);
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} catch (TDGWTServiceException e) {
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logger.error(
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"Error retrieving credentials:" + e.getLocalizedMessage(),
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e);
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throw new ServletException(e.getLocalizedMessage());
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}
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CSVFileUploadSession fileUploadSession = SessionUtil
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.getCSVFileUploadSession(request, serviceCredentials);
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if (fileUploadSession == null) {
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logger.error("Error getting the upload session, no fileUploadSession found: "
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+ fileUploadSession);
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response.sendError(HttpServletResponse.SC_INTERNAL_SERVER_ERROR,
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"ERROR-Error getting the user session, no fileUploadSession found: "
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+ fileUploadSession);
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return;
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}
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response.setContentType("application/json; charset=utf-8");
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Charset outputCharset = Charset.forName("Utf-8");
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ByteArrayOutputStream os = new ByteArrayOutputStream();
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CSVFileUtil.toJson(new FileInputStream(fileUploadSession.getCsvFile()),
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os, outputCharset, fileUploadSession.getParserConfiguration(),
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100);
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logger.trace("json: " + os.toString());
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System.out.println("json: " + os.toString());
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response.getOutputStream().write(os.toByteArray());
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// CSVFileUtil.toJson(new FileInputStream(importSession.getCsvFile()),
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// response.getOutputStream(), outputCharset,
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// importSession.getParserConfiguration(), 100);
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response.setStatus(HttpServletResponse.SC_OK);
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logger.trace("Response in " + (System.currentTimeMillis() - startTime));
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}
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}
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