org.argeo.app.servlet.odk/src/org/argeo/app/servlet/odk/OdkSubmissionServlet.java

   1 package org.argeo.app.servlet.odk;
   2
   3 import java.io.IOException;
   4 import java.nio.file.Files;
   5 import java.nio.file.Path;
   6 import java.time.Instant;
   7 import java.time.ZoneId;
   8 import java.time.ZoneOffset;
   9 import java.time.format.DateTimeFormatter;
  10 import java.util.HashSet;
  11 import java.util.Set;
  12
  13 import javax.jcr.ImportUUIDBehavior;
  14 import javax.jcr.Node;
  15 import javax.jcr.Property;
  16 import javax.jcr.Repository;
  17 import javax.jcr.RepositoryException;
  18 import javax.jcr.Session;
  19 import javax.jcr.nodetype.NodeType;
  20 import javax.servlet.ServletException;
  21 import javax.servlet.http.HttpServlet;
  22 import javax.servlet.http.HttpServletRequest;
  23 import javax.servlet.http.HttpServletResponse;
  24 import javax.servlet.http.Part;
  25
  26 import org.argeo.api.cms.CmsLog;
  27 import org.argeo.api.cms.CmsSession;
  28 import org.argeo.app.core.SuiteUtils;
  29 import org.argeo.app.image.ImageProcessor;
  30 import org.argeo.app.odk.OrxType;
  31 import org.argeo.app.xforms.FormSubmissionListener;
  32 import org.argeo.cms.auth.RemoteAuthRequest;
  33 import org.argeo.cms.auth.RemoteAuthUtils;
  34 import org.argeo.cms.jcr.CmsJcrUtils;
  35 import org.argeo.cms.servlet.ServletHttpRequest;
  36 import org.argeo.jcr.Jcr;
  37 import org.argeo.jcr.JcrUtils;
  38
  39 /** Receives a form submission. */
  40 public class OdkSubmissionServlet extends HttpServlet {
  41         private static final long serialVersionUID = 7834401404691302385L;
  42         private final static CmsLog log = CmsLog.getLog(OdkSubmissionServlet.class);
  43
  44         private final static String XML_SUBMISSION_FILE = "xml_submission_file";
  45
  46         private DateTimeFormatter submissionNameFormatter = DateTimeFormatter.ofPattern("YYYY-MM-dd-HHmmssSSS")
  47                         .withZone(ZoneId.from(ZoneOffset.UTC));
  48
  49         private Repository repository;
  50
  51         private Set<FormSubmissionListener> submissionListeners = new HashSet<>();
  52
  53         @Override
  54         protected void doPost(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {
  55                 resp.setContentType("text/xml; charset=utf-8");
  56                 resp.setHeader("X-OpenRosa-Version", "1.0");
  57                 resp.setDateHeader("Date", System.currentTimeMillis());
  58                 resp.setIntHeader("X-OpenRosa-Accept-Content-Length", 1024 * 1024);
  59
  60                 RemoteAuthRequest request = new ServletHttpRequest(req);
  61                 Session session = RemoteAuthUtils.doAs(() -> Jcr.login(repository, null), request);
  62
  63                 try {
  64                         CmsSession cmsSession = RemoteAuthUtils.getCmsSession(request);
  65
  66                         Session adminSession = null;
  67                         try {
  68                                 // TODO centralise at a deeper level
  69                                 adminSession = CmsJcrUtils.openDataAdminSession(repository, null);
  70                                 SuiteUtils.getOrCreateCmsSessionNode(adminSession, cmsSession);
  71                         } finally {
  72                                 Jcr.logout(adminSession);
  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;
  89                                         if (part.getName().endsWith(".jpg")) {
  90                                                 // Fix metadata
  91                                                 Path temp = Files.createTempFile("image", ".jpg");
  92                                                 try {
  93                                                         ImageProcessor imageProcessor = new ImageProcessor(() -> part.getInputStream(),
  94                                                                         () -> Files.newOutputStream(temp));
  95                                                         imageProcessor.process();
  96                                                         fileNode = JcrUtils.copyStreamAsFile(submission, part.getName(),
  97                                                                         Files.newInputStream(temp));
  98                                                 } finally {
  99                                                         Files.deleteIfExists(temp);
 100                                                 }
 101                                         } else {
 102                                                 fileNode = JcrUtils.copyStreamAsFile(submission, part.getName(), part.getInputStream());
 103                                         }
 104                                         String contentType = part.getContentType();
 105                                         if (contentType != null) {
 106                                                 fileNode.addMixin(NodeType.MIX_MIMETYPE);
 107                                                 fileNode.setProperty(Property.JCR_MIMETYPE, contentType);
 108
 109                                         }
 110                                         if (part.getName().endsWith(".jpg") || part.getName().endsWith(".png")) {
 111                                                 // TODO meta data and thumbnails
 112                                         }
 113                                 }
 114                         }
 115                         session.save();
 116                         for (FormSubmissionListener submissionListener : submissionListeners) {
 117                                 submissionListener.formSubmissionReceived(submission);
 118                         }
 119                 } catch (RepositoryException e) {
 120                         e.printStackTrace();
 121                         resp.setStatus(503);
 122                         return;
 123                 } finally {
 124                         Jcr.logout(session);
 125                 }
 126
 127                 resp.setStatus(201);
 128                 resp.getWriter().write("<OpenRosaResponse xmlns=\"http://openrosa.org/http/response\">"
 129                                 + "<message>Form Received!</message>" + "</OpenRosaResponse>");
 130
 131         }
 132
 133         public void setRepository(Repository repository) {
 134                 this.repository = repository;
 135         }
 136
 137         public synchronized void addSubmissionListener(FormSubmissionListener listener) {
 138                 submissionListeners.add(listener);
 139         }
 140
 141         public synchronized void removeSubmissionListener(FormSubmissionListener listener) {
 142                 submissionListeners.remove(listener);
 143         }
 144 }