src/main/java/org/onap/dmaap/dbcapi/service/FeedService.java

   1 /*-
   2  * ============LICENSE_START=======================================================
   3  * org.onap.dmaap
   4  * ================================================================================
   5  * Copyright (C) 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
  21 package org.onap.dmaap.dbcapi.service;
  22
  23 import java.util.ArrayList;
  24 import java.util.List;
  25 import java.util.Map;
  26
  27 import javax.ws.rs.core.Response.Status;
  28
  29 import org.apache.log4j.Logger;
  30 import org.onap.dmaap.dbcapi.aaf.client.DrProvConnection;
  31 import org.onap.dmaap.dbcapi.aaf.database.DatabaseClass;
  32 import org.onap.dmaap.dbcapi.logging.BaseLoggingClass;
  33 import org.onap.dmaap.dbcapi.model.ApiError;
  34 import org.onap.dmaap.dbcapi.model.DR_Pub;
  35 import org.onap.dmaap.dbcapi.model.DR_Sub;
  36 import org.onap.dmaap.dbcapi.model.Feed;
  37 import org.onap.dmaap.dbcapi.model.DmaapObject.DmaapObject_Status;
  38 import org.onap.dmaap.dbcapi.util.DmaapConfig;
  39
  40 public class FeedService  extends BaseLoggingClass {
  41
  42         private Map<String, Feed> feeds = DatabaseClass.getFeeds();
  43         private DR_PubService pubService = new DR_PubService();
  44         private DR_SubService subService = new DR_SubService();
  45         private DcaeLocationService dcaeLocations = new DcaeLocationService();
  46         private String deleteHandling;
  47
  48         public FeedService() {
  49                 logger.info( "new FeedService");
  50                 DmaapConfig p = (DmaapConfig)DmaapConfig.getConfig();
  51                 deleteHandling = p.getProperty("Feed.deleteHandling", "DeleteOnDR");
  52
  53         }
  54
  55         public Map<String, Feed> getFeeds() {
  56                 return feeds;
  57         }
  58
  59         private void getSubObjects( Feed f ) {
  60                 ArrayList<DR_Pub> pubs = pubService.getDr_PubsByFeedId( f.getFeedId() );
  61                 f.setPubs(pubs);
  62                 ArrayList<DR_Sub> subs = subService.getDr_SubsByFeedId( f.getFeedId() );
  63                 f.setSubs(subs);
  64         }
  65
  66         public List<Feed> getAllFeeds() {
  67                 ArrayList<Feed> fatFeeds = new ArrayList<Feed>();
  68                 for( Feed f:  feeds.values() ) {
  69                         getSubObjects(f);
  70                         fatFeeds.add(f);
  71                 }
  72                 return fatFeeds;
  73         }
  74
  75
  76         private Feed _getFeed( String key, ApiError err, boolean flag ) {
  77                 Feed f = feeds.get( key );
  78                 if ( f != null && ( flag || f.getStatus() != DmaapObject_Status.DELETED ) ) {
  79                         getSubObjects( f );
  80                 } else {
  81                         err.setCode(Status.NOT_FOUND.getStatusCode());
  82                         err.setMessage("feed not found");
  83                         err.setFields("feedId=" + key );
  84                         return null;
  85                 }
  86                 err.setCode(200);
  87                 return f;
  88         }
  89         public Feed getFeed( String key, ApiError err ) {
  90                 return _getFeed( key, err, false );
  91         }
  92         public Feed getFeedPure( String key, ApiError err ) {
  93                 return _getFeed( key, err, true );
  94         }
  95
  96         public Feed getFeedByName( String name, String ver, ApiError err ) {
  97                 for( Feed f:  feeds.values() ) {
  98                         if ( f.getFeedName().equals( name ) && f.getFeedVersion().equals(ver) ) {
  99                                 getSubObjects(f);
 100                                 return f;
 101                         }
 102
 103                 }
 104                 err.setCode(Status.NOT_FOUND.getStatusCode());
 105                 err.setMessage("feed not found");
 106                 err.setFields("feedName=" + name + " and ver=" + ver );
 107                 return null;
 108
 109         }
 110
 111         private boolean savePubs( Feed f ) {
 112                 return savePubs( f, f );
 113         }
 114         // need to save the Pub objects independently and copy pubId from original request
 115         private boolean savePubs( Feed fnew, Feed req ) {
 116                 // save any pubs
 117                 DR_PubService pubSvc = new DR_PubService();
 118                 ArrayList<DR_Pub> reqPubs = req.getPubs();
 119                 ArrayList<DR_Pub> newPubs = fnew.getPubs();
 120
 121
 122
 123                 int nSize = newPubs.size();
 124                 int rSize = reqPubs.size();
 125                 logger.info( "reqPubs size=" + rSize + " newPubs size=" + nSize );
 126                 if ( nSize != rSize ) {
 127                         errorLogger.error( "Resulting set of publishers do not match requested set of publishers " + nSize + " vs " + rSize );
 128                         fnew.setStatus( DmaapObject_Status.INVALID);
 129                         return false;
 130                 }
 131                 // NOTE: when i > 1 newPubs are in reverse order from reqPubs
 132                 for( int i = 0; i < reqPubs.size(); i++ ) {
 133                         DR_Pub reqPub = reqPubs.get(i);
 134                         ApiError err = new ApiError();
 135                         if ( pubSvc.getDr_Pub( reqPub.getPubId(), err ) == null ) {
 136                                 DR_Pub newPub = newPubs.get(nSize - i - 1);
 137                                 reqPub.setPubId(newPub.getPubId());
 138                                 reqPub.setFeedId(newPub.getFeedId());
 139                                 reqPub.setStatus(DmaapObject_Status.VALID);
 140                                 if ( reqPub.getDcaeLocationName() == null ) {
 141                                         reqPub.setDcaeLocationName("notSpecified");
 142                                 }
 143                                 pubSvc.addDr_Pub( reqPub );
 144                         }
 145
 146                 }
 147
 148                 fnew.setPubs(reqPubs);
 149                 fnew.setStatus(DmaapObject_Status.VALID);
 150                 return true;
 151
 152         }
 153
 154         private boolean saveSubs( Feed f ) {
 155                 return saveSubs( f, f );
 156         }
 157         // need to save the Sub objects independently
 158         private boolean saveSubs( Feed fnew, Feed req ) {
 159                 ArrayList<DR_Sub> subs = req.getSubs();
 160                 if ( subs.size() == 0 ) {
 161                         logger.info( "No subs specified");
 162                 } else {
 163                         DR_SubService subSvc = new DR_SubService( fnew.getSubscribeURL() );
 164                         ApiError err = new ApiError();
 165                         for( int i = 0; i <  subs.size(); i++ ) {
 166                                 DR_Sub sub = subs.get(i);
 167                                 if ( subSvc.getDr_Sub( sub.getSubId(), err) == null ) {
 168                                         subs.set( i,  subSvc.addDr_Sub(sub, err));
 169                                         if ( ! err.is2xx())  {
 170                                                 logger.error( "i=" + i + " url=" + sub.getDeliveryURL() + " err=" + err.getCode() );
 171                                                 return false;
 172                                         }
 173                                 }
 174
 175                         }
 176                         fnew.setSubs(subs);
 177                 }
 178
 179
 180                 fnew.setStatus(DmaapObject_Status.VALID);
 181                 return true;
 182
 183         }
 184
 185         public  Feed addFeed( Feed req, ApiError err ) {
 186
 187                 // at least 1 pub is required by DR, so create a default pub if none is specified
 188                 if ( req.getPubs().size() == 0 ) {
 189                         logger.info( "No pubs specified - creating tmp pub");
 190                         ArrayList<DR_Pub> pubs = new ArrayList<DR_Pub>();
 191                         pubs.add( new DR_Pub( dcaeLocations.getCentralLocation())
 192                                                                 .setRandomUserName()
 193                                                                 .setRandomPassword());
 194                         req.setPubs(pubs);
 195                 }
 196
 197
 198                 DrProvConnection prov = new DrProvConnection();
 199                 prov.makeFeedConnection();
 200                 String resp = prov.doPostFeed( req, err );
 201                 logger.info( "resp=" + resp );
 202                 if ( resp == null ) {
 203                         switch( err.getCode() ) {
 204                         case 400:
 205                                 err.setFields( "feedName=" + req.getFeedName() + " + feedVersion=" + req.getFeedVersion() );
 206                                 break;
 207                         case 403:
 208                                 err.setCode(500);
 209                                 err.setMessage("API deployment/configuration error - contact support");
 210                                 err.setFields( "PROV_AUTH_ADDRESSES");
 211                                 logger.error( "Prov response: 403. " + err.getMessage() + " regarding " + err.getFields() );
 212                                 break;
 213                         default:
 214                                 err.setCode(500);
 215                                 err.setMessage( "Unexpected response from DR backend" );
 216                                 err.setFields("response");
 217                         }
 218                         return null;
 219
 220                 }
 221
 222
 223                 Feed fnew = new Feed( resp );
 224                 logger.info( "fnew status is:" + fnew.getStatus() );
 225                 if ( ! fnew.isStatusValid()) {
 226                         err.setCode(500);
 227                         err.setMessage( "Unexpected response from DR backend" );
 228                         err.setFields("response");
 229                         return null;
 230                 }
 231
 232                 //saveChildren( fnew, req );
 233                 if ( ! savePubs( fnew, req ) || ! saveSubs( fnew, req ) ) {
 234                         err.setCode(Status.BAD_REQUEST.getStatusCode());
 235                         err.setMessage("Unable to save Pub or Sub objects");
 236                         return null;
 237                 }
 238                 fnew.setFormatUuid(req.getFormatUuid());
 239                 fnew.setLastMod();
 240                 feeds.put( fnew.getFeedId(), fnew );
 241                 return fnew;
 242         }
 243
 244         public Feed updateFeed( Feed req, ApiError err ) {
 245
 246                 // at least 1 pub is required by DR, so create a default pub if none is specified
 247                 if ( req.getPubs().size() == 0 ) {
 248                         logger.info( "No pubs specified - creating tmp pub");
 249                         ArrayList<DR_Pub> pubs = new ArrayList<DR_Pub>();
 250                         pubs.add( new DR_Pub( dcaeLocations.getCentralLocation())
 251                                                                 .setRandomUserName()
 252                                                                 .setRandomPassword());
 253                         req.setPubs(pubs);
 254                 }
 255
 256                 DrProvConnection prov = new DrProvConnection();
 257                 prov.makeFeedConnection( req.getFeedId() );
 258                 String resp = prov.doPutFeed( req, err );
 259                 logger.info( "resp=" + resp );
 260                 if ( resp == null ) {
 261                         switch( err.getCode() ) {
 262                         case 400:
 263                                 err.setFields( "feedName=" + req.getFeedName() + " + feedVersion=" + req.getFeedVersion() );
 264                                 break;
 265                         case 403:
 266                                 err.setCode(500);
 267                                 err.setMessage("API deployment/configuration error - contact support");
 268                                 err.setFields( "PROV_AUTH_ADDRESSES");
 269                                 break;
 270                         default:
 271                                 err.setCode(500);
 272                                 err.setMessage( "Unexpected response from DR backend" );
 273                                 err.setFields("response");
 274                         }
 275                         return null;
 276                 }
 277
 278
 279                 Feed fnew = new Feed( resp );
 280                 logger.info( "fnew status is:" + fnew.getStatus() );
 281                 if ( ! fnew.isStatusValid()) {
 282                         err.setCode(500);
 283                         err.setMessage( "Unexpected response from DR backend" );
 284                         err.setFields("response");
 285                         return null;
 286                 }
 287
 288                 if ( ! savePubs( fnew, req ) || ! saveSubs( fnew, req ) ) {
 289                         err.setCode(Status.BAD_REQUEST.getStatusCode());
 290                         err.setMessage("Unable to save Pub or Sub objects");
 291                         return null;
 292                 }
 293                 fnew.setFormatUuid(req.getFormatUuid());
 294                 fnew.setLastMod();
 295                 feeds.put( fnew.getFeedId(), fnew );
 296                 return fnew;
 297         }
 298
 299
 300         //
 301         // DR does not actually delete a feed, so we provide two behaviors:
 302         // 1) clean up the feed by removing all subs and pubs, mark it here as DELETED.
 303         //    then client can add it back if desired.
 304         // 2) Call the DR Delete function.  Feed with the same name and version can never be added again
 305         //
 306         public Feed removeFeed( Feed req, ApiError err ) {
 307
 308                 // strip pubs and subs from feed first no matter what
 309                 ArrayList<DR_Pub> pubs = pubService.getDr_PubsByFeedId( req.getFeedId() );
 310                 for( DR_Pub pub: pubs ) {
 311                         pubService.removeDr_Pub(pub.getPubId(), err);
 312                         if ( ! err.is2xx()) {
 313                                 return req;
 314                         }
 315                 }
 316                 ArrayList<DR_Sub> subs = subService.getDr_SubsByFeedId( req.getFeedId() );
 317                 for ( DR_Sub sub: subs ) {
 318                         subService.removeDr_Sub(sub.getSubId(), err);
 319                         if ( ! err.is2xx()) {
 320                                 return req;
 321                         }
 322                 }
 323
 324                 if ( deleteHandling.equalsIgnoreCase("DeleteOnDR")) {
 325                         DrProvConnection prov = new DrProvConnection();
 326                         prov.makeFeedConnection( req.getFeedId() );
 327                         String resp = prov.doDeleteFeed( req, err );
 328                         logger.info( "resp=" + resp );
 329                         if ( resp == null ) {
 330                                 switch( err.getCode() ) {
 331                                 case 400:
 332                                         err.setFields( "feedName=" + req.getFeedName() + " + feedVersion=" + req.getFeedVersion() );
 333                                         break;
 334                                 case 403:
 335                                         err.setCode(500);
 336                                         err.setMessage("API deployment/configuration error - contact support");
 337                                         err.setFields( "PROV_AUTH_ADDRESSES");
 338                                         break;
 339                                 default:
 340                                         err.setCode(500);
 341                                         err.setMessage( "Unexpected response from DR backend" );
 342                                         err.setFields("response");
 343                                 }
 344                                 return req;  // return back the requested feed - implies it wasn't removed
 345                         }
 346                         return feeds.remove(req.getFeedId());
 347                 } else {
 348                         req.setStatus(DmaapObject_Status.DELETED);
 349                         req.setPubs(null);
 350                         req.setSubs(null);
 351                         req.setLastMod();
 352                         feeds.put( req.getFeedId(), req );
 353                         return null;
 354                 }
 355
 356
 357         }
 358
 359 }