knowledge/org.argeo.support.odk/src/org/argeo/support/odk/servlet/OdkSubmissionServlet.java

   1 package org.argeo.support.odk.servlet;
   2
   3 import java.io.IOException;
   4 import java.time.Instant;
   5 import java.time.ZoneId;
   6 import java.time.ZoneOffset;
   7 import java.time.format.DateTimeFormatter;
   8 import java.util.HashSet;
   9 import java.util.Set;
  10
  11 import javax.jcr.ImportUUIDBehavior;
  12 import javax.jcr.Node;
  13 import javax.jcr.Property;
  14 import javax.jcr.Repository;
  15 import javax.jcr.RepositoryException;
  16 import javax.jcr.Session;
  17 import javax.jcr.nodetype.NodeType;
  18 import javax.servlet.ServletException;
  19 import javax.servlet.http.HttpServlet;
  20 import javax.servlet.http.HttpServletRequest;
  21 import javax.servlet.http.HttpServletResponse;
  22 import javax.servlet.http.Part;
  23
  24 import org.apache.commons.logging.Log;
  25 import org.apache.commons.logging.LogFactory;
  26 import org.argeo.api.NodeUtils;
  27 import org.argeo.cms.auth.CmsSession;
  28 import org.argeo.cms.servlet.ServletAuthUtils;
  29 import org.argeo.jcr.Jcr;
  30 import org.argeo.jcr.JcrUtils;
  31 import org.argeo.suite.SuiteUtils;
  32 import org.argeo.support.odk.OrxType;
  33 import org.argeo.support.xforms.FormSubmissionListener;
  34
  35 /** Receives a form submission. */
  36 public class OdkSubmissionServlet extends HttpServlet {
  37         private static final long serialVersionUID = 7834401404691302385L;
  38         private final static Log log = LogFactory.getLog(OdkSubmissionServlet.class);
  39
  40         private final static String XML_SUBMISSION_FILE = "xml_submission_file";
  41
  42         private DateTimeFormatter submissionNameFormatter = DateTimeFormatter.ofPattern("YYYY-MM-dd-HHmmssSSS")
  43                         .withZone(ZoneId.from(ZoneOffset.UTC));
  44
  45         private Repository repository;
  46
  47         private Set<FormSubmissionListener> submissionListeners = new HashSet<>();
  48
  49         @Override
  50         protected void doPost(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {
  51                 resp.setContentType("text/xml; charset=utf-8");
  52                 resp.setHeader("X-OpenRosa-Version", "1.0");
  53                 resp.setDateHeader("Date", System.currentTimeMillis());
  54                 resp.setIntHeader("X-OpenRosa-Accept-Content-Length", 1024 * 1024);
  55
  56                 Session session = ServletAuthUtils.doAs(() -> Jcr.login(repository, null), req);
  57
  58                 try {
  59 //                      Node submissions = JcrUtils.mkdirs(session,
  60 //                                      "/" + EntityType.form.get() + "/" + EntityNames.SUBMISSIONS_BASE);
  61                         CmsSession cmsSession = ServletAuthUtils.getCmsSession(req);
  62
  63                         ClassLoader currentContextCl = Thread.currentThread().getContextClassLoader();
  64                         Thread.currentThread().setContextClassLoader(ServletAuthUtils.class.getClassLoader());
  65                         Session adminSession = null;
  66                         try {
  67                                 // TODO centralise at a deeper level
  68                                 adminSession = NodeUtils.openDataAdminSession(repository, null);
  69                                 SuiteUtils.getOrCreateCmsSessionNode(adminSession, cmsSession);
  70                         } finally {
  71                                 Jcr.logout(adminSession);
  72                                 Thread.currentThread().setContextClassLoader(currentContextCl);
  73                         }
  74
  75                         Node cmsSessionNode = SuiteUtils.getCmsSessionNode(session, cmsSession);
  76                         Node submission = cmsSessionNode.addNode(submissionNameFormatter.format(Instant.now()),
  77                                         OrxType.submission.get());
  78                         for (Part part : req.getParts()) {
  79                                 if (log.isDebugEnabled())
  80                                         log.debug("Part: " + part.getName() + ", " + part.getContentType());
  81
  82                                 if (part.getName().equals(XML_SUBMISSION_FILE)) {
  83                                         Node xml = submission.addNode(XML_SUBMISSION_FILE, NodeType.NT_UNSTRUCTURED);
  84                                         session.importXML(xml.getPath(), part.getInputStream(),
  85                                                         ImportUUIDBehavior.IMPORT_UUID_COLLISION_REPLACE_EXISTING);
  86
  87                                 } else {
  88                                         Node fileNode = JcrUtils.copyStreamAsFile(submission, part.getName(), part.getInputStream());
  89                                         String contentType = part.getContentType();
  90                                         if (contentType != null) {
  91                                                 fileNode.addMixin(NodeType.MIX_MIMETYPE);
  92                                                 fileNode.setProperty(Property.JCR_MIMETYPE, contentType);
  93
  94                                         }
  95                                         if (part.getName().endsWith(".jpg") || part.getName().endsWith(".png")) {
  96                                                 // TODO meta data and thumbnails
  97                                         }
  98                                 }
  99                         }
 100                         session.save();
 101                         for (FormSubmissionListener submissionListener : submissionListeners) {
 102                                 submissionListener.formSubmissionReceived(submission);
 103                         }
 104                 } catch (RepositoryException e) {
 105                         e.printStackTrace();
 106                         resp.setStatus(503);
 107                         return;
 108                 } finally {
 109                         Jcr.logout(session);
 110                 }
 111
 112                 resp.setStatus(201);
 113                 resp.getWriter().write("<OpenRosaResponse xmlns=\"http://openrosa.org/http/response\">"
 114                                 + "<message>Form Received!</message>" + "</OpenRosaResponse>");
 115
 116         }
 117
 118         public void setRepository(Repository repository) {
 119                 this.repository = repository;
 120         }
 121
 122         public synchronized void addSubmissionListener(FormSubmissionListener listener) {
 123                 submissionListeners.add(listener);
 124         }
 125
 126         public synchronized void removeSubmissionListener(FormSubmissionListener listener) {
 127                 submissionListeners.remove(listener);
 128         }
 129 }