code.grnet.gr Git - pithos/blob - src/gr/ebs/gss/server/rest/OthersHandler.java

   1 /*
   2  * Copyright 2008, 2009 Electronic Business Systems Ltd.
   3  *
   4  * This file is part of GSS.
   5  *
   6  * GSS is free software: you can redistribute it and/or modify
   7  * it under the terms of the GNU General Public License as published by
   8  * the Free Software Foundation, either version 3 of the License, or
   9  * (at your option) any later version.
  10  *
  11  * GSS is distributed in the hope that it will be useful,
  12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14  * GNU General Public License for more details.
  15  *
  16  * You should have received a copy of the GNU General Public License
  17  * along with GSS.  If not, see <http://www.gnu.org/licenses/>.
  18  */
  19 package gr.ebs.gss.server.rest;
  20
  21 import gr.ebs.gss.client.exceptions.ObjectNotFoundException;
  22 import gr.ebs.gss.client.exceptions.RpcException;
  23 import gr.ebs.gss.server.domain.User;
  24 import gr.ebs.gss.server.domain.dto.FileHeaderDTO;
  25 import gr.ebs.gss.server.domain.dto.FolderDTO;
  26 import gr.ebs.gss.server.domain.dto.UserDTO;
  27
  28 import java.io.IOException;
  29 import java.util.ArrayList;
  30 import java.util.List;
  31
  32 import javax.servlet.http.HttpServletRequest;
  33 import javax.servlet.http.HttpServletResponse;
  34
  35 import org.apache.commons.logging.Log;
  36 import org.apache.commons.logging.LogFactory;
  37 import org.json.JSONArray;
  38 import org.json.JSONException;
  39 import org.json.JSONObject;
  40
  41
  42 /**
  43  * A class that handles operations on the 'others' namespace.
  44  *
  45  * @author past
  46  */
  47 public class OthersHandler extends RequestHandler {
  48         /**
  49          * The logger.
  50          */
  51         private static Log logger = LogFactory.getLog(OthersHandler.class);
  52
  53         /**
  54      * Serve the 'others' namespace for the user.
  55      *
  56      * @param req The servlet request we are processing
  57      * @param resp The servlet response we are processing
  58      * @throws IOException if an input/output error occurs
  59          */
  60         void serveOthers(HttpServletRequest req, HttpServletResponse resp) throws IOException {
  61         String parentUrl = getContextPath(req, true);
  62         String path = getInnerPath(req, PATH_OTHERS);
  63                 if (path.equals(""))
  64                         path = "/";
  65
  66         User user = getUser(req);
  67         User owner = getOwner(req);
  68         if (!owner.equals(user)) {
  69                 resp.sendError(HttpServletResponse.SC_METHOD_NOT_ALLOWED);
  70                 return;
  71         }
  72         if (path.equals("/"))
  73                         try {
  74                         // Request to retrieve the other users who have shared resources to this user
  75                         JSONArray json = new JSONArray();
  76
  77                 List<UserDTO> others = getService().getUsersSharingFoldersForUser(owner.getId());
  78                         for (UserDTO u: others) {
  79                                 JSONObject j = new JSONObject();
  80                                 j.put("username", u.getUsername()).
  81                                         put("uri", parentUrl + u.getUsername());
  82                                 json.put(j);
  83                         }
  84
  85                 sendJson(req, resp, json.toString());
  86                 } catch (ObjectNotFoundException e) {
  87                         logger.error("User not found", e);
  88                         resp.sendError(HttpServletResponse.SC_INTERNAL_SERVER_ERROR);
  89                         return;
  90                 } catch (RpcException e) {
  91                         logger.error("", e);
  92                         resp.sendError(HttpServletResponse.SC_INTERNAL_SERVER_ERROR);
  93                         return;
  94                         } catch (JSONException e) {
  95                                 logger.error("", e);
  96                                 resp.sendError(HttpServletResponse.SC_INTERNAL_SERVER_ERROR);
  97                                 return;
  98                         }
  99                 else
 100                         try {
 101                         // Request to retrieve the files and folders shared by the other user
 102                         // Chop any trailing slash
 103                         path = path.endsWith("/")? path.substring(0, path.length()-1): path;
 104                         // Chop any leading slash
 105                         path = path.startsWith("/")? path.substring(1): path;
 106
 107                         User other = getService().findUser(path);
 108                         JSONObject json = new JSONObject();
 109
 110                                 List<JSONObject> subfolders = new ArrayList<JSONObject>();
 111                 List<FolderDTO> folders = getService().getSharedRootFolders(other.getId(), owner.getId());
 112                         for (FolderDTO f: folders) {
 113                                 JSONObject j = new JSONObject();
 114                                 j.put("name", f.getName()).
 115                                         put("uri", getApiRoot() + f.getURI());
 116                                 subfolders.add(j);
 117                         }
 118                         json.put("folders", subfolders);
 119
 120                 List<JSONObject> files = new ArrayList<JSONObject>();
 121                 List<FileHeaderDTO> fileHeaders = getService().getSharedFiles(other.getId(), owner.getId());
 122                 for (FileHeaderDTO f: fileHeaders) {
 123                         JSONObject j = new JSONObject();
 124                                 j.put("name", f.getName()).
 125                                         put("owner", f.getOwner().getUsername()).
 126                                         put("deleted", f.isDeleted()).
 127                                         put("version", f.getVersion()).
 128                                         put("size", f.getFileSize()).
 129                                         put("content", f.getMimeType()).
 130                                         put("creationDate", f.getAuditInfo().getCreationDate().getTime()).
 131                                         put("modificationDate", f.getAuditInfo().getModificationDate().getTime()).
 132                                         put("path", f.getFolder().getPath()).
 133                                         put("uri", getApiRoot() + f.getURI());
 134                                 files.add(j);
 135                 }
 136                 json.put("files", files);
 137
 138                 sendJson(req, resp, json.toString());
 139                 } catch (ObjectNotFoundException e) {
 140                         logger.error("User not found", e);
 141                         resp.sendError(HttpServletResponse.SC_INTERNAL_SERVER_ERROR);
 142                         return;
 143                 } catch (RpcException e) {
 144                         logger.error("", e);
 145                         resp.sendError(HttpServletResponse.SC_INTERNAL_SERVER_ERROR);
 146                         return;
 147                         } catch (JSONException e) {
 148                                 logger.error("", e);
 149                                 resp.sendError(HttpServletResponse.SC_INTERNAL_SERVER_ERROR);
 150                                 return;
 151                         }
 152
 153                 resp.setHeader("Expires", "-1");
 154         }
 155
 156 }