datarouter-prov/src/main/java/org/onap/dmaap/datarouter/provisioning/FeedServlet.java

   1 /*******************************************************************************
   2  * ============LICENSE_START==================================================
   3  * * org.onap.dmaap
   4  * * ===========================================================================
   5  * * Copyright © 2017 AT&T Intellectual Property. All rights reserved.
   6  * * ===========================================================================
   7  * * Licensed under the Apache License, Version 2.0 (the "License");
   8  * * you may not use this file except in compliance with the License.
   9  * * You may obtain a copy of the License at
  10  * *
  11  *  *      http://www.apache.org/licenses/LICENSE-2.0
  12  * *
  13  *  * Unless required by applicable law or agreed to in writing, software
  14  * * distributed under the License is distributed on an "AS IS" BASIS,
  15  * * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  16  * * See the License for the specific language governing permissions and
  17  * * limitations under the License.
  18  * * ============LICENSE_END====================================================
  19  * *
  20  * * ECOMP is a trademark and service mark of AT&T Intellectual Property.
  21  * *
  22  ******************************************************************************/
  23
  24
  25 package org.onap.dmaap.datarouter.provisioning;
  26
  27 import java.io.IOException;
  28 import java.io.InvalidObjectException;
  29
  30 import javax.servlet.http.HttpServletRequest;
  31 import javax.servlet.http.HttpServletResponse;
  32
  33 import org.json.JSONObject;
  34 import org.onap.dmaap.datarouter.authz.AuthorizationResponse;
  35 import org.onap.dmaap.datarouter.provisioning.beans.EventLogRecord;
  36 import org.onap.dmaap.datarouter.provisioning.beans.Feed;
  37 import org.onap.dmaap.datarouter.provisioning.eelf.EelfMsgs;
  38
  39 import com.att.eelf.configuration.EELFLogger;
  40 import com.att.eelf.configuration.EELFManager;
  41
  42 /**
  43  * This servlet handles provisioning for the &lt;feedURL&gt; which is generated by the provisioning
  44  * server to handle a particular feed. It supports DELETE to mark the feed as deleted,
  45  * and GET to retrieve information about the feed, and PUT to modify the feed.
  46  *
  47  * @author Robert Eby
  48  * @version $Id$
  49  */
  50 @SuppressWarnings("serial")
  51 public class FeedServlet extends ProxyServlet {
  52
  53     //Adding EELF Logger Rally:US664892
  54     private static EELFLogger eelflogger = EELFManager.getInstance().getLogger("org.onap.dmaap.datarouter.provisioning.FeedServlet");
  55
  56     /**
  57      * Delete the Feed at the address /feed/&lt;feednumber&gt;.
  58      * See the <i>Deleting a Feed</i> section in the <b>Provisioning API</b>
  59      * document for details on how this method should be invoked.
  60      */
  61     @Override
  62     public void doDelete(HttpServletRequest req, HttpServletResponse resp) throws IOException {
  63         setIpAndFqdnForEelf("doDelete");
  64         eelflogger.info(EelfMsgs.MESSAGE_WITH_BEHALF_AND_FEEDID, req.getHeader(BEHALF_HEADER),getIdFromPath(req)+"");
  65         EventLogRecord elr = new EventLogRecord(req);
  66         String message = isAuthorizedForProvisioning(req);
  67         if (message != null) {
  68             elr.setMessage(message);
  69             elr.setResult(HttpServletResponse.SC_FORBIDDEN);
  70             eventlogger.info(elr);
  71             resp.sendError(HttpServletResponse.SC_FORBIDDEN, message);
  72             return;
  73         }
  74         if (isProxyServer()) {
  75             super.doDelete(req, resp);
  76             return;
  77         }
  78         String bhdr = req.getHeader(BEHALF_HEADER);
  79         if (bhdr == null) {
  80             message = "Missing "+BEHALF_HEADER+" header.";
  81             elr.setMessage(message);
  82             elr.setResult(HttpServletResponse.SC_BAD_REQUEST);
  83             eventlogger.info(elr);
  84             resp.sendError(HttpServletResponse.SC_BAD_REQUEST, message);
  85             return;
  86         }
  87         int feedid = getIdFromPath(req);
  88         if (feedid < 0) {
  89             message = "Missing or bad feed number.";
  90             elr.setMessage(message);
  91             elr.setResult(HttpServletResponse.SC_BAD_REQUEST);
  92             eventlogger.info(elr);
  93             resp.sendError(HttpServletResponse.SC_BAD_REQUEST, message);
  94             return;
  95         }
  96         Feed feed = Feed.getFeedById(feedid);
  97         if (feed == null || feed.isDeleted()) {
  98             message = "Missing or bad feed number.";
  99             elr.setMessage(message);
 100             elr.setResult(HttpServletResponse.SC_NOT_FOUND);
 101             eventlogger.info(elr);
 102             resp.sendError(HttpServletResponse.SC_NOT_FOUND, message);
 103             return;
 104         }
 105         // Check with the Authorizer
 106         AuthorizationResponse aresp = authz.decide(req);
 107         if (! aresp.isAuthorized()) {
 108             message = "Policy Engine disallows access.";
 109             elr.setMessage(message);
 110             elr.setResult(HttpServletResponse.SC_FORBIDDEN);
 111             eventlogger.info(elr);
 112             resp.sendError(HttpServletResponse.SC_FORBIDDEN, message);
 113             return;
 114         }
 115
 116         // Delete FEED table entry (set DELETED flag)
 117         feed.setDeleted(true);
 118         if (doUpdate(feed)) {
 119             activeFeeds--;
 120             // send response
 121             elr.setResult(HttpServletResponse.SC_NO_CONTENT);
 122             eventlogger.info(elr);
 123             resp.setStatus(HttpServletResponse.SC_NO_CONTENT);
 124             provisioningDataChanged();
 125         } else {
 126             // Something went wrong with the UPDATE
 127             elr.setResult(HttpServletResponse.SC_INTERNAL_SERVER_ERROR);
 128             eventlogger.info(elr);
 129             resp.sendError(HttpServletResponse.SC_INTERNAL_SERVER_ERROR, DB_PROBLEM_MSG);
 130         }
 131     }
 132     /**
 133      * Get information on the feed at the address /feed/&lt;feednumber&gt;.
 134      * See the <i>Retrieving Information about a Feed</i> section in the <b>Provisioning API</b>
 135      * document for details on how this method should be invoked.
 136      */
 137     @Override
 138     public void doGet(HttpServletRequest req, HttpServletResponse resp) throws IOException {
 139         setIpAndFqdnForEelf("doGet");
 140         eelflogger.info(EelfMsgs.MESSAGE_WITH_BEHALF_AND_FEEDID, req.getHeader(BEHALF_HEADER),getIdFromPath(req)+"");
 141         EventLogRecord elr = new EventLogRecord(req);
 142         String message = isAuthorizedForProvisioning(req);
 143         if (message != null) {
 144             elr.setMessage(message);
 145             elr.setResult(HttpServletResponse.SC_FORBIDDEN);
 146             eventlogger.info(elr);
 147             resp.sendError(HttpServletResponse.SC_FORBIDDEN, message);
 148             return;
 149         }
 150         if (isProxyServer()) {
 151             super.doGet(req, resp);
 152             return;
 153         }
 154         String bhdr = req.getHeader(BEHALF_HEADER);
 155         if (bhdr == null) {
 156             message = "Missing "+BEHALF_HEADER+" header.";
 157             elr.setMessage(message);
 158             elr.setResult(HttpServletResponse.SC_BAD_REQUEST);
 159             eventlogger.info(elr);
 160             resp.sendError(HttpServletResponse.SC_BAD_REQUEST, message);
 161             return;
 162         }
 163         int feedid = getIdFromPath(req);
 164         if (feedid < 0) {
 165             message = "Missing or bad feed number.";
 166             elr.setMessage(message);
 167             elr.setResult(HttpServletResponse.SC_BAD_REQUEST);
 168             eventlogger.info(elr);
 169             resp.sendError(HttpServletResponse.SC_BAD_REQUEST, message);
 170             return;
 171         }
 172         Feed feed = Feed.getFeedById(feedid);
 173         if (feed == null || feed.isDeleted()) {
 174             message = "Missing or bad feed number.";
 175             elr.setMessage(message);
 176             elr.setResult(HttpServletResponse.SC_NOT_FOUND);
 177             eventlogger.info(elr);
 178             resp.sendError(HttpServletResponse.SC_NOT_FOUND, message);
 179             return;
 180         }
 181         // Check with the Authorizer
 182         AuthorizationResponse aresp = authz.decide(req);
 183         if (! aresp.isAuthorized()) {
 184             message = "Policy Engine disallows access.";
 185             elr.setMessage(message);
 186             elr.setResult(HttpServletResponse.SC_FORBIDDEN);
 187             eventlogger.info(elr);
 188             resp.sendError(HttpServletResponse.SC_FORBIDDEN, message);
 189             return;
 190         }
 191
 192         // send response
 193         elr.setResult(HttpServletResponse.SC_OK);
 194         eventlogger.info(elr);
 195         resp.setStatus(HttpServletResponse.SC_OK);
 196         resp.setContentType(FEEDFULL_CONTENT_TYPE);
 197         resp.getOutputStream().print(feed.asJSONObject(true).toString());
 198     }
 199     /**
 200      * PUT on the &lt;feedURL&gt; for a feed.
 201      * See the <i>Modifying a Feed</i> section in the <b>Provisioning API</b>
 202      * document for details on how this method should be invoked.
 203      */
 204     @Override
 205     public void doPut(HttpServletRequest req, HttpServletResponse resp) throws IOException {
 206         setIpAndFqdnForEelf("doPut");
 207         eelflogger.info(EelfMsgs.MESSAGE_WITH_BEHALF_AND_FEEDID, req.getHeader(BEHALF_HEADER),getIdFromPath(req)+"");
 208         EventLogRecord elr = new EventLogRecord(req);
 209         String message = isAuthorizedForProvisioning(req);
 210         if (message != null) {
 211             elr.setMessage(message);
 212             elr.setResult(HttpServletResponse.SC_FORBIDDEN);
 213             eventlogger.info(elr);
 214             resp.sendError(HttpServletResponse.SC_FORBIDDEN, message);
 215             return;
 216         }
 217         if (isProxyServer()) {
 218             super.doPut(req, resp);
 219             return;
 220         }
 221         String bhdr = req.getHeader(BEHALF_HEADER);
 222         if (bhdr == null) {
 223             message = "Missing "+BEHALF_HEADER+" header.";
 224             elr.setMessage(message);
 225             elr.setResult(HttpServletResponse.SC_BAD_REQUEST);
 226             eventlogger.info(elr);
 227             resp.sendError(HttpServletResponse.SC_BAD_REQUEST, message);
 228             return;
 229         }
 230         int feedid = getIdFromPath(req);
 231         if (feedid < 0) {
 232             message = "Missing or bad feed number.";
 233             elr.setMessage(message);
 234             elr.setResult(HttpServletResponse.SC_BAD_REQUEST);
 235             eventlogger.info(elr);
 236             resp.sendError(HttpServletResponse.SC_BAD_REQUEST, message);
 237             return;
 238         }
 239         Feed oldFeed = Feed.getFeedById(feedid);
 240         if (oldFeed == null || oldFeed.isDeleted()) {
 241             message = "Missing or bad feed number.";
 242             elr.setMessage(message);
 243             elr.setResult(HttpServletResponse.SC_NOT_FOUND);
 244             eventlogger.info(elr);
 245             resp.sendError(HttpServletResponse.SC_NOT_FOUND, message);
 246             return;
 247         }
 248         // check content type is FEED_CONTENT_TYPE, version 1.0
 249         ContentHeader ch = getContentHeader(req);
 250         String ver = ch.getAttribute("version");
 251         if (!ch.getType().equals(FEED_BASECONTENT_TYPE) || !(ver.equals("1.0") || ver.equals("2.0"))) {
 252             message = "Incorrect content-type";
 253             elr.setMessage(message);
 254             elr.setResult(HttpServletResponse.SC_UNSUPPORTED_MEDIA_TYPE);
 255             eventlogger.info(elr);
 256             resp.sendError(HttpServletResponse.SC_UNSUPPORTED_MEDIA_TYPE, message);
 257             return;
 258         }
 259         JSONObject jo = getJSONfromInput(req);
 260         if (jo == null) {
 261             message = "Badly formed JSON";
 262             elr.setMessage(message);
 263             elr.setResult(HttpServletResponse.SC_BAD_REQUEST);
 264             eventlogger.info(elr);
 265             resp.sendError(HttpServletResponse.SC_BAD_REQUEST, message);
 266             return;
 267         }
 268         if (intlogger.isDebugEnabled())
 269             intlogger.debug(jo.toString());
 270         Feed feed = null;
 271         try {
 272             feed = new Feed(jo);
 273         } catch (InvalidObjectException e) {
 274             message = e.getMessage();
 275             elr.setMessage(message);
 276             elr.setResult(HttpServletResponse.SC_BAD_REQUEST);
 277             eventlogger.info(elr);
 278             resp.sendError(HttpServletResponse.SC_BAD_REQUEST, message);
 279             return;
 280         }
 281         feed.setFeedid(feedid);
 282         feed.setPublisher(bhdr);    // set from X-ATT-DR-ON-BEHALF-OF header
 283
 284         String subjectgroup = (req.getHeader("X-ATT-DR-ON-BEHALF-OF-GROUP"));  //Adding for group feature:Rally US708115
 285         if (!oldFeed.getPublisher().equals(feed.getPublisher()) && subjectgroup == null) {
 286             message = "This feed must be modified by the same publisher that created it.";
 287             elr.setMessage(message);
 288             elr.setResult(HttpServletResponse.SC_BAD_REQUEST);
 289             eventlogger.info(elr);
 290             resp.sendError(HttpServletResponse.SC_BAD_REQUEST, message);
 291             return;
 292         }
 293         if (!oldFeed.getName().equals(feed.getName())) {
 294             message = "The name of the feed may not be updated.";
 295             elr.setMessage(message);
 296             elr.setResult(HttpServletResponse.SC_BAD_REQUEST);
 297             eventlogger.info(elr);
 298             resp.sendError(HttpServletResponse.SC_BAD_REQUEST, message);
 299             return;
 300         }
 301         if (!oldFeed.getVersion().equals(feed.getVersion())) {
 302             message = "The version of the feed may not be updated.";
 303             elr.setMessage(message);
 304             elr.setResult(HttpServletResponse.SC_BAD_REQUEST);
 305             eventlogger.info(elr);
 306             resp.sendError(HttpServletResponse.SC_BAD_REQUEST, message);
 307             return;
 308         }
 309         // Check with the Authorizer
 310         AuthorizationResponse aresp = authz.decide(req);
 311         if (! aresp.isAuthorized()) {
 312             message = "Policy Engine disallows access.";
 313             elr.setMessage(message);
 314             elr.setResult(HttpServletResponse.SC_FORBIDDEN);
 315             eventlogger.info(elr);
 316             resp.sendError(HttpServletResponse.SC_FORBIDDEN, message);
 317             return;
 318         }
 319
 320         // Update FEEDS table entries
 321         if (doUpdate(feed)) {
 322             // send response
 323             elr.setResult(HttpServletResponse.SC_OK);
 324             eventlogger.info(elr);
 325             resp.setStatus(HttpServletResponse.SC_OK);
 326             resp.setContentType(FEEDFULL_CONTENT_TYPE);
 327             resp.getOutputStream().print(feed.asLimitedJSONObject().toString());
 328
 329
 330             /**Change Owner ship of Feed //Adding for group feature:Rally US708115*/
 331             if (jo.has("changeowner") && subjectgroup != null) {
 332                 Boolean changeowner = (Boolean) jo.get("changeowner");
 333                 if (changeowner != null && changeowner.equals(true)) {
 334                     feed.setPublisher(req.getHeader(BEHALF_HEADER));
 335                     feed.changeOwnerShip();
 336                 }
 337             }
 338             /***End of change ownership*/
 339
 340             provisioningDataChanged();
 341         } else {
 342             // Something went wrong with the UPDATE
 343             elr.setResult(HttpServletResponse.SC_INTERNAL_SERVER_ERROR);
 344             eventlogger.info(elr);
 345             resp.sendError(HttpServletResponse.SC_INTERNAL_SERVER_ERROR, DB_PROBLEM_MSG);
 346         }
 347     }
 348     /**
 349      * POST on the &lt;feedURL&gt; -- not supported.
 350      */
 351     @Override
 352     public void doPost(HttpServletRequest req, HttpServletResponse resp) throws IOException {
 353         setIpAndFqdnForEelf("doPost");
 354         eelflogger.info(EelfMsgs.MESSAGE_WITH_BEHALF, req.getHeader(BEHALF_HEADER));
 355         String message = "POST not allowed for the feedURL.";
 356         EventLogRecord elr = new EventLogRecord(req);
 357         elr.setMessage(message);
 358         elr.setResult(HttpServletResponse.SC_METHOD_NOT_ALLOWED);
 359         eventlogger.info(elr);
 360         resp.sendError(HttpServletResponse.SC_METHOD_NOT_ALLOWED, message);
 361     }
 362 }