Пример #1
0
 @PUT
 @Consumes(MediaType.APPLICATION_XML)
 public Response putTaskData(String value) {
   Response res = null;
   // add your code here
   // first check if the Entity exists in the datastore
   DatastoreService datastore = DatastoreServiceFactory.getDatastoreService();
   MemcacheService syncCache = MemcacheServiceFactory.getMemcacheService();
   syncCache.setErrorHandler(ErrorHandlers.getConsistentLogAndContinue(Level.INFO));
   Key entKey = KeyFactory.createKey("TaskData", keyname);
   Date date = new Date();
   try {
     // if it is, signal that we updated the entity
     Entity ts = datastore.get(entKey);
     ts.setProperty("value", value);
     ts.setProperty("date", date);
     datastore.put(ts);
     res = Response.noContent().build();
   } catch (EntityNotFoundException e) {
     // if it is not, create it and
     // signal that we created the entity in the datastore
     Entity taskdata = new Entity("TaskData", keyname);
     taskdata.setProperty("value", value);
     taskdata.setProperty("date", date);
     datastore.put(taskdata);
     res = Response.created(uriInfo.getAbsolutePath()).build();
   }
   TaskData td = new TaskData(keyname, value, date);
   syncCache.put(keyname, td);
   return res;
 }
Пример #2
0
  @DELETE
  public void deleteIt() {

    // delete an entity from the datastore
    // just print a message upon exception (don't throw)
    DatastoreService datastore = DatastoreServiceFactory.getDatastoreService();
    MemcacheService syncCache = MemcacheServiceFactory.getMemcacheService();
    if (syncCache.get(keyname) != null) {
      syncCache.delete(keyname);
    }
    Key entKey = KeyFactory.createKey("TaskData", keyname);
    try {
      Entity ent = datastore.get(entKey);
      datastore.delete(entKey);
      System.err.println("TaskData deleted in Datastore");
    } catch (EntityNotFoundException e) {
      System.err.println("TaskData not found in Datastore");
    }
  }
Пример #3
0
 // for the application
 @GET
 @Produces({MediaType.APPLICATION_XML, MediaType.APPLICATION_JSON})
 public TaskData getTaskData() {
   // same code as above method
   DatastoreService datastore = DatastoreServiceFactory.getDatastoreService();
   MemcacheService syncCache = MemcacheServiceFactory.getMemcacheService();
   if (syncCache.get(keyname) != null) {
     TaskData ts = (TaskData) syncCache.get(keyname);
     return ts;
   }
   Key entKey = KeyFactory.createKey("TaskData", keyname);
   try {
     Entity ent = datastore.get(entKey);
     TaskData ts =
         new TaskData(keyname, (String) ent.getProperty("value"), (Date) ent.getProperty("date"));
     return ts;
   } catch (EntityNotFoundException e) {
     throw new RuntimeException("Get: TaskData with " + keyname + " not found");
   }
 }
Пример #4
0
 // for the browser
 @GET
 @Produces(MediaType.TEXT_XML)
 public TaskData getTaskDataHTML() {
   // add your code here (get Entity from datastore using this.keyname)
   // throw new RuntimeException("Get: TaskData with " + keyname +  " not found");
   // if not found
   DatastoreService datastore = DatastoreServiceFactory.getDatastoreService();
   MemcacheService syncCache = MemcacheServiceFactory.getMemcacheService();
   if (syncCache.get(keyname) != null) {
     TaskData ts = (TaskData) syncCache.get(keyname);
     return ts;
   }
   Key entKey = KeyFactory.createKey("TaskData", keyname);
   try {
     Entity ent = datastore.get(entKey);
     TaskData ts =
         new TaskData(keyname, (String) ent.getProperty("value"), (Date) ent.getProperty("date"));
     return ts;
   } catch (EntityNotFoundException e) {
     throw new RuntimeException("Get: TaskData with " + keyname + " not found");
   }
 }
Пример #5
0
  public void doPost(HttpServletRequest req, HttpServletResponse resp) throws IOException {
    int index;

    DatastoreService ds;
    MemcacheService ms;
    BlobstoreService bs;
    URLFetchService us;
    FileService fs;

    Map<String, List<BlobKey>> blobMap;
    BlobKey blobKey;
    BlobInfoFactory blobInfoFactory;
    BlobInfo blobInfo;

    int postCount;
    int postIndex;
    String postType;
    String postText;
    String postDelpw;
    String postShowgallery;
    DataObj dataObj;
    String filelink;

    String picUrl;
    HTTPResponse picRes;
    List<HTTPHeader> headerList;
    String picMime;
    String[] fileNamePart;
    AppEngineFile picFile;
    FileWriteChannel writeChannel;

    PostObj postObj;
    List<PostObj> postObjList;
    String linkID;

    resp.setCharacterEncoding("UTF-8");
    resp.setContentType("text/plain");

    try {
      ds = DatastoreServiceFactory.getDatastoreService();
      ms = MemcacheServiceFactory.getMemcacheService();
      bs = BlobstoreServiceFactory.getBlobstoreService();
      us = URLFetchServiceFactory.getURLFetchService();
      fs = FileServiceFactory.getFileService();
      blobInfoFactory = new BlobInfoFactory(ds);

      blobMap = bs.getUploads(req);
      postCount = Integer.valueOf(req.getParameter("input_post_count"));
      postObjList = new ArrayList<PostObj>();

      for (postIndex = 0; postIndex < postCount; postIndex++) {
        try {
          postType = req.getParameter("input_post_type_" + postIndex);
          if (postType == null) {
            continue;
          }

          postText = req.getParameter("input_post_text_" + postIndex);
          postDelpw = req.getParameter("input_post_delpw_" + postIndex);
          postShowgallery = req.getParameter("input_post_showgallery_" + postIndex);
          if (postShowgallery == null) {
            postShowgallery = "";
          }

          if (postType.equals("file") == true) {
            blobKey = blobMap.get("input_post_file_" + postIndex).get(0);
            if (blobKey == null) {
              throw new Exception();
            }

            dataObj = new DataObj();
            dataObj.fileid = createUID();
            dataObj.posttime = new Date().getTime();
            dataObj.delpw = postDelpw;
            dataObj.blobkey = blobKey;
            dataObj.putDB(ds);

            blobInfo = blobInfoFactory.loadBlobInfo(dataObj.blobkey);
            filelink =
                "http://"
                    + req.getServerName()
                    + "/down/"
                    + dataObj.fileid
                    + "/"
                    + blobInfo.getFilename();
            postObj =
                new PostObj(
                    dataObj.fileid,
                    filelink,
                    blobInfo.getSize(),
                    dataObj.posttime,
                    dataObj.delpw,
                    postShowgallery);
            postObjList.add(postObj);
          } else if (postType.equals("url") == true) {
            picUrl = postText;

            picRes = us.fetch(new URL(picUrl));
            headerList = picRes.getHeaders();
            picMime = "application/octet-stream";
            for (index = 0; index < headerList.size(); index++) {
              if (headerList.get(index).getName().compareToIgnoreCase("Content-Type") == 0) {
                picMime = headerList.get(index).getValue();
                break;
              }
            }

            fileNamePart = picUrl.split("/");

            picFile = fs.createNewBlobFile(picMime, fileNamePart[fileNamePart.length - 1]);
            writeChannel = fs.openWriteChannel(picFile, true);
            writeChannel.write(ByteBuffer.wrap(picRes.getContent()));
            writeChannel.closeFinally();

            dataObj = new DataObj();
            dataObj.fileid = createUID();
            dataObj.posttime = new Date().getTime();
            dataObj.delpw = postDelpw;
            dataObj.blobkey = fs.getBlobKey(picFile);
            dataObj.putDB(ds);

            blobInfo = blobInfoFactory.loadBlobInfo(dataObj.blobkey);
            filelink =
                "http://"
                    + req.getServerName()
                    + "/down/"
                    + dataObj.fileid
                    + "/"
                    + blobInfo.getFilename();
            postObj =
                new PostObj(
                    dataObj.fileid,
                    filelink,
                    blobInfo.getSize(),
                    dataObj.posttime,
                    dataObj.delpw,
                    postShowgallery);
            postObjList.add(postObj);
          }
        } catch (Exception e) {
        }
      }

      linkID = postFile(us, postObjList);

      if (req.getParameter("specflag") != null) {
        resp.getWriter().print("http://tnfshmoe.appspot.com/link.jsp?linkid=" + linkID);
      } else {
        resp.sendRedirect("http://tnfshmoe.appspot.com/link.jsp?linkid=" + linkID);
      }
    } catch (Exception e) {
    }
  }
  @Override
  public void doGet(HttpServletRequest req, HttpServletResponse resp) throws IOException {
    resp.setContentType("text/html");
    resp.getWriter().println("<html><body>");

    String keyname = req.getParameter("keyname");
    String value = req.getParameter("value");

    DatastoreService datastore = DatastoreServiceFactory.getDatastoreService();
    // Using the synchronous cache.
    MemcacheService syncCache = MemcacheServiceFactory.getMemcacheService();
    syncCache.setErrorHandler(ErrorHandlers.getConsistentLogAndContinue(Level.INFO));

    // display every element of kind TaskData for /datastore
    if (req.getParameterMap().isEmpty()) {
      // querying from datastore
      resp.getWriter().println("<h3>Datastore results:</h3>");
      List<String> listOfKeys = new ArrayList<String>();
      Query q = new Query("TaskData");
      PreparedQuery pq = datastore.prepare(q);
      for (Entity result : pq.asIterable()) {
        String datastore_key = result.getKey().getName();
        String taskData_value = (String) result.getProperty("value");
        Date taskData_date = (Date) result.getProperty("date");
        resp.getWriter()
            .println(
                "<p>keyname = "
                    + datastore_key
                    + "  value = "
                    + taskData_value
                    + " date = "
                    + taskData_date.toString()
                    + "</p>");
        listOfKeys.add(datastore_key);
      }
      // check which of the keys exist in memcache
      String memcache_value;
      resp.getWriter().println("<h3>Memcache results:</h3>");
      for (String datastore_key : listOfKeys) {
        memcache_value = (String) syncCache.get(datastore_key);
        if (memcache_value != null) {
          // String decoded = new String(memcache_value, "UTF-8");
          resp.getWriter()
              .println("<p>keyname = " + datastore_key + " value = " + memcache_value + "</p>");
        }
      }
    }

    // display element of kind TaskData with key=keyname
    else if (keyname != null && value == null) {

      // first check in the cache
      String memcache_value = (String) syncCache.get(keyname); // Read from cache.
      // Get value from datastore
      Key task_key = KeyFactory.createKey("TaskData", keyname);
      try {
        Entity tne = datastore.get(task_key);
        if (memcache_value == null) {
          resp.getWriter().println("<h2>Datastore</h2>");
        } else {
          resp.getWriter().println("<h2>Both</h2>");
        }

      } catch (EntityNotFoundException e) {
        resp.getWriter().println("<h2>Neither</h2>");
      }
    }

    // store element of kind TaskData with key=keyname and value=value
    else if (keyname != null && value != null) {
      Entity tne = new Entity("TaskData", keyname);
      tne.setProperty("value", value);
      tne.setProperty("date", new Date());
      datastore.put(tne);
      syncCache.put(keyname, value); // Populate cache.
      resp.getWriter()
          .println("<h2>Stored " + keyname + " and " + value + " in Datastore and Memcache</h2>");
    } else {

      resp.getWriter().println("<h2>You entered wrong query parameters</h2>");
    }

    /*
       Entity tne = new Entity("TaskData", "Person");
    alice.setProperty("gender", "female");
    alice.setProperty("age", 20);
    */

    resp.getWriter().println("</body></html>");
  }
Пример #7
0
/**
 * Mapped to /routesmemcache. GET, POST and DELETE are supported to manipulate Route objects in the
 * datastore.
 *
 * @author Aviral Takkar
 *     <p>Curl examples:
 *     <p>GET - curl "http://go-places-ucsb.appspot.com/rest/routesmemcache/{route_id}"
 *     <p>POST - curl -i -H "Accept: application/json" -H "Content-Type: application/json" -X POST
 *     --data "{\"origin\":{\"address\":\"santa barbara\"},\"destination\":{\"address\":\"los
 *     angeles\"}, \"mapJsonAsText\":\"xyz\"}" http://go-places-ucsb.appspot.com/rest/routesmemcache
 */
@Path("/routesmemcache")
public class RoutesMemcacheAPI {
  @Context UriInfo uriInfo;
  @Context Request request;
  Random key = new java.util.Random();
  MemcacheService syncCache = MemcacheServiceFactory.getMemcacheService();

  @POST
  @Consumes(MediaType.APPLICATION_JSON)
  @Produces(MediaType.APPLICATION_JSON)
  public String addRoute(Route route, @Context HttpServletResponse servletResponse)
      throws IOException {
    try {
      Entity routeEntity = new Entity("Route");
      routeEntity.setProperty("originPlaceID", route.getOrigin().getGooglePlaceId());
      routeEntity.setProperty("destinationPlaceID", route.getDestination().getGooglePlaceId());
      routeEntity.setProperty("duration", route.getDuration());
      routeEntity.setProperty("distance", route.getDistance());
      routeEntity.setProperty("origin", route.getOrigin().getAddress());
      routeEntity.setProperty("destination", route.getDestination().getAddress());

      Text mapJsonAsText = route.getMapJsonAsText();
      routeEntity.setProperty("routeJSON", mapJsonAsText);

      syncCache.setErrorHandler(ErrorHandlers.getConsistentLogAndContinue(Level.INFO));
      String cacheKey = "route-" + key.nextLong();
      syncCache.put(cacheKey, routeEntity);
      return new JSONObject().append("status", "OK").append("key", cacheKey).toString();
    } catch (Exception e) {
      return new JSONObject()
          .append("status", "fail")
          .append("message", "Could not cache object.")
          .toString();
    }
  }

  @GET
  @Path("{route_id}")
  @Produces(MediaType.APPLICATION_JSON)
  public String getPlace(@PathParam("route_id") String routeID) {
    JSONObject reply = new JSONObject();
    try {

      syncCache.setErrorHandler(ErrorHandlers.getConsistentLogAndContinue(Level.INFO));

      Entity result = (Entity) syncCache.get(routeID);
      if (result != null)
        return reply
            .append("status", "OK")
            .append("message", "Found in memcache.")
            .append("Route Object", result)
            .toString();

      return reply.append("status", "fail").append("message", "Not found in memcache.").toString();
    } catch (Exception e) {
      return new JSONObject()
          .append("status", "fail")
          .append("message", "Route object with ID " + routeID + " not found.")
          .toString();
    }
  }

  @DELETE
  @Path("{route_id}")
  @Produces(MediaType.APPLICATION_JSON)
  public String deletePlace(@PathParam("route_id") String routeID) {
    syncCache.setErrorHandler(ErrorHandlers.getConsistentLogAndContinue(Level.INFO));
    JSONObject reply = new JSONObject();
    try {
      syncCache.delete(routeID);
      return reply
          .append("status", "OK")
          .append("message", "successfully deleted route " + routeID + " from " + "memcache")
          .toString();
    } catch (Exception e) {
      return new JSONObject().append("status", "fail").append("message", e.getMessage()).toString();
    }
  }
}
Пример #8
0
  public void doPost(HttpServletRequest req, HttpServletResponse resp) throws IOException {
    int index;

    DatastoreService ds;
    MemcacheService ms;

    Cookie[] cookies;
    boolean insideFlag;

    String delpw;
    String paramOffset;
    String paramSize;
    int offset;
    int size;

    Key postObjGroupKey;
    Query q;
    List<Entity> postObjList;
    PostObj postObj;

    Gson gson;
    List<String> filelinkList;

    resp.setCharacterEncoding("UTF-8");
    resp.setContentType("text/plain");

    ds = DatastoreServiceFactory.getDatastoreService();
    ms = MemcacheServiceFactory.getMemcacheService();

    insideFlag = false;
    try {
      cookies = req.getCookies();
      if (cookies.length > 0) {
        if (ms.contains(cookies[0].getValue()) == true) {
          insideFlag = true;
        }
      }
    } catch (Exception e) {
      insideFlag = false;
    }

    delpw = req.getParameter("delpw");
    if (delpw != null) {
      if (delpw.equals("") == true) {
        delpw = null;
      }
    }

    paramOffset = req.getParameter("offset");
    if (paramOffset != null) {
      offset = Integer.valueOf(paramOffset);
    } else {
      offset = 0;
    }

    paramSize = req.getParameter("size");
    if (paramSize != null) {
      size = Integer.valueOf(paramSize);
    } else {
      size = 4096;
    }

    postObjGroupKey = KeyFactory.createKey("PostObjGroup", 1L);
    q = new Query("PostObj", postObjGroupKey);
    if (delpw != null) {
      q.addFilter("delpw", FilterOperator.EQUAL, delpw);
      q.addSort("delpw");
    }
    q.addSort("posttime", SortDirection.DESCENDING);
    postObjList = ds.prepare(q).asList(FetchOptions.Builder.withOffset(offset).limit(size));

    postObj = new PostObj();
    filelinkList = new ArrayList<String>();
    for (index = 0; index < postObjList.size(); index++) {
      postObj.getDB(postObjList.get(index));
      if ((postObj.flag.equals("showgallery") == false && insideFlag == true)
          || (postObj.flag.equals("showgallery") == true && insideFlag == false)
          || delpw != null) {
        filelinkList.add(postObj.filelink);
      }
    }

    gson = new Gson();
    resp.getWriter().print(gson.toJson(filelinkList));
  }