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

   1 /*-
   2  * ============LICENSE_START=======================================================
   3  * org.onap.dmaap
   4  * ================================================================================
   5  * Copyright (C) 2017 AT&T Intellectual Property. All rights reserved.
   6  *
   7  * Modifications Copyright (C) 2019 IBM.
   8  * ================================================================================
   9  * Licensed under the Apache License, Version 2.0 (the "License");
  10  * you may not use this file except in compliance with the License.
  11  * You may obtain a copy of the License at
  12  *
  13  *      http://www.apache.org/licenses/LICENSE-2.0
  14  *
  15  * Unless required by applicable law or agreed to in writing, software
  16  * distributed under the License is distributed on an "AS IS" BASIS,
  17  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  18  * See the License for the specific language governing permissions and
  19  * limitations under the License.
  20  * ============LICENSE_END=========================================================
  21  */
  22
  23 package org.onap.dmaap.dbcapi.service;
  24
  25 import java.util.ArrayList;
  26 import java.util.Collection;
  27 import java.util.Iterator;
  28 import java.util.List;
  29 import java.util.Map;
  30 import java.util.Set;
  31
  32 import javax.ws.rs.core.Response.Status;
  33
  34 import org.onap.dmaap.dbcapi.aaf.AafNamespace;
  35 import org.onap.dmaap.dbcapi.aaf.AafRole;
  36 import org.onap.dmaap.dbcapi.aaf.AafService;
  37 import org.onap.dmaap.dbcapi.aaf.DmaapGrant;
  38 import org.onap.dmaap.dbcapi.aaf.AafService.ServiceType;
  39 import org.onap.dmaap.dbcapi.aaf.DmaapPerm;
  40 import org.onap.dmaap.dbcapi.database.DatabaseClass;
  41 import org.onap.dmaap.dbcapi.logging.BaseLoggingClass;
  42 import org.onap.dmaap.dbcapi.logging.DmaapbcLogMessageEnum;
  43 import org.onap.dmaap.dbcapi.model.ApiError;
  44 import org.onap.dmaap.dbcapi.model.DcaeLocation;
  45 import org.onap.dmaap.dbcapi.model.Dmaap;
  46 import org.onap.dmaap.dbcapi.model.DmaapObject.DmaapObject_Status;
  47 import org.onap.dmaap.dbcapi.model.MR_Client;
  48 import org.onap.dmaap.dbcapi.model.MR_Cluster;
  49 import org.onap.dmaap.dbcapi.model.MirrorMaker;
  50 import org.onap.dmaap.dbcapi.model.ReplicationType;
  51 import org.onap.dmaap.dbcapi.model.Topic;
  52 import org.onap.dmaap.dbcapi.util.DmaapConfig;
  53 import org.onap.dmaap.dbcapi.util.Fqdn;
  54 import org.onap.dmaap.dbcapi.util.Graph;
  55
  56 public class TopicService extends BaseLoggingClass {
  57
  58
  59
  60         // REF: https://wiki.web.att.com/pages/viewpage.action?pageId=519703122
  61         private static String defaultGlobalMrHost;
  62
  63         private Map<String, Topic> mr_topics = DatabaseClass.getTopics();
  64
  65         private static DmaapService dmaapSvc = new DmaapService();
  66         private MR_ClientService clientService = new MR_ClientService();
  67         private MR_ClusterService clusters = new MR_ClusterService();
  68         private DcaeLocationService locations = new DcaeLocationService();
  69         private MirrorMakerService      bridge = new MirrorMakerService();
  70
  71         private static String centralCname;
  72
  73
  74         public TopicService(){
  75                 DmaapConfig p = (DmaapConfig)DmaapConfig.getConfig();
  76                 defaultGlobalMrHost = p.getProperty("MR.globalHost", "global.host.not.set");
  77                 centralCname = p.getProperty("MR.CentralCname");
  78
  79
  80                 logger.info( "TopicService properties: CentralCname=" + centralCname +
  81                                 "   defaultGlobarlMrHost=" + defaultGlobalMrHost  );
  82         }
  83
  84         public Map<String, Topic> getTopics() {
  85                 return mr_topics;
  86         }
  87
  88         public List<Topic> getAllTopics() {
  89                 return getAllTopics( true );
  90         }
  91         public List<Topic> getAllTopicsWithoutClients() {
  92                 return getAllTopics(false);
  93         }
  94
  95         private List<Topic> getAllTopics( Boolean withClients ) {
  96                 ArrayList<Topic> topics = new ArrayList<>(mr_topics.values());
  97                 if ( withClients ) {
  98                         for( Topic topic: topics ) {
  99                                 topic.setClients( clientService.getAllMrClients(topic.getFqtn()));
 100                         }
 101                 }
 102                 return topics;
 103         }
 104
 105
 106         public Topic getTopic( String key, ApiError apiError ) {
 107                 logger.info( "getTopic: key=" + key);
 108                 Topic t = mr_topics.get( key );
 109                 if ( t == null ) {
 110                         apiError.setCode(Status.NOT_FOUND.getStatusCode());
 111                         apiError.setFields( "fqtn");
 112                         apiError.setMessage("topic with fqtn " + key + " not found");
 113                         return null;
 114                 }
 115                 t.setClients( clientService.getAllMrClients( key ));
 116                 apiError.setCode(Status.OK.getStatusCode());
 117                 return t;
 118         }
 119
 120         private void aafTopicSetup(Topic topic, ApiError err ) {
 121
 122                 String t = dmaapSvc.getTopicPerm();
 123                 if ( t == null ) {
 124                         err.setCode(500);
 125                         err.setMessage("Unable to establish AAF namespace root: (check /dmaap object)"  );
 126                         err.setFields("topicNsRoot");
 127                         return;
 128                 }
 129
 130                 // establish AAF Connection using TopicMgr identity
 131                 AafService aaf = new AafService(ServiceType.AAF_TopicMgr);
 132
 133
 134
 135                 // create AAF namespace for this topic
 136                 AafNamespace ns = new AafNamespace( topic.getFqtn(), aaf.getIdentity());
 137                 {
 138                         int rc = aaf.addNamespace( ns );
 139                         if ( rc != 201 && rc != 409 ) {
 140                                 err.setCode(500);
 141                                 err.setMessage("Unexpected response from AAF:" + rc );
 142                                 err.setFields("namespace:" + topic.getFqtn() + " identity="+ aaf.getIdentity());
 143                                 return;
 144                         }
 145                 }
 146
 147                 // create AAF Roles for MR clients of this topic
 148                 String rn = "publisher";
 149                 AafRole pubRole = new AafRole( topic.getFqtn(), rn );
 150                 int rc = aaf.addRole( pubRole );
 151                 if ( rc != 201 && rc != 409 ) {
 152                         err.setCode(500);
 153                         err.setMessage("Unexpected response from AAF:" + rc );
 154                         err.setFields("topic:" + topic.getFqtn() + " role="+ rn);
 155                         return;
 156                 }
 157                 topic.setPublisherRole( pubRole.getFullyQualifiedRole() );
 158
 159                 rn = "subscriber";
 160                 AafRole subRole = new AafRole( topic.getFqtn(), rn );
 161                 rc = aaf.addRole( subRole );
 162                 if ( rc != 201 && rc != 409 ) {
 163                         err.setCode(500);
 164                         err.setMessage("Unexpected response from AAF:" + rc );
 165                         err.setFields("topic:" + topic.getFqtn() + " role="+ rn);
 166                         return;
 167                 }
 168                 topic.setSubscriberRole( subRole.getFullyQualifiedRole() );
 169
 170
 171                 // create AAF perms checked by MR
 172                 String instance = ":topic." + topic.getFqtn();
 173                 String[] actions = { "pub", "sub", "view" };
 174                 for ( String action : actions ){
 175                         DmaapPerm perm = new DmaapPerm( t, instance, action );
 176                         rc = aaf.addPerm( perm );
 177                         if ( rc != 201 && rc != 409 ) {
 178                                 err.setCode(500);
 179                                 err.setMessage("Unexpected response from AAF:" + rc );
 180                                 err.setFields("t="+t + " instance="+ instance + " action="+ action);
 181                                 return;
 182                         }
 183                         // Grant perms to our default Roles
 184                         if ( action.equals( "pub") || action.equals( "view") ) {
 185                                 DmaapGrant g = new DmaapGrant( perm, pubRole.getFullyQualifiedRole() );
 186                                 rc = aaf.addGrant( g );
 187                                 if ( rc != 201 && rc != 409 ) {
 188                                         err.setCode(rc);
 189                                         err.setMessage( "Grant of " + perm.toString() + " failed for " + pubRole.getFullyQualifiedRole() );
 190                                         logger.warn( err.getMessage());
 191                                         return;
 192                                 }
 193                         }
 194                         if ( action.equals( "sub") || action.equals( "view") ) {
 195                                 DmaapGrant g = new DmaapGrant( perm, subRole.getFullyQualifiedRole() );
 196                                 rc = aaf.addGrant( g );
 197                                 if ( rc != 201 && rc != 409 ) {
 198                                         err.setCode(rc);
 199                                         err.setMessage( "Grant of " + perm.toString() + " failed for " + subRole.getFullyQualifiedRole() );
 200                                         logger.warn( err.getMessage());
 201                                         return;
 202                                 }
 203                         }
 204
 205                 }
 206         }
 207
 208         public Topic addTopic( Topic topic, ApiError err, Boolean useExisting ) {
 209                 logger.info( "Entry: addTopic");
 210                 logger.info( "Topic name=" + topic.getTopicName() + " fqtnStyle=" + topic.getFqtnStyle() );
 211                 String nFqtn =  topic.genFqtn();
 212                 logger.info( "FQTN=" + nFqtn );
 213                 Topic pTopic = getTopic( nFqtn, err );
 214                 if ( pTopic != null ) {
 215                         String t = "topic already exists: " + nFqtn;
 216                         logger.info( t );
 217                         if (  useExisting ) {
 218                                 err.setCode(Status.OK.getStatusCode());
 219                                 return pTopic;
 220                         }
 221                         err.setMessage( t );
 222                         err.setFields( "fqtn");
 223                         err.setCode(Status.CONFLICT.getStatusCode());
 224                         return null;
 225                 }
 226                 err.reset();  // err filled with NOT_FOUND is expected case, but don't want to litter...
 227
 228                 topic.setFqtn( nFqtn );
 229
 230                 aafTopicSetup( topic, err );
 231                 if ( err.getCode() >= 400 ) {
 232                         return null;
 233                 }
 234
 235                 if ( topic.getReplicationCase().involvesGlobal() ) {
 236                         if ( topic.getGlobalMrURL() == null ) {
 237                                 topic.setGlobalMrURL(defaultGlobalMrHost);
 238                         }
 239                         if ( ! Fqdn.isValid( topic.getGlobalMrURL())) {
 240                                 logger.error( "GlobalMR FQDN not valid: " + topic.getGlobalMrURL());
 241                                 topic.setStatus( DmaapObject_Status.INVALID);
 242                                 err.setCode(500);
 243                                 err.setMessage("Value is not a valid FQDN:" +  topic.getGlobalMrURL() );
 244                                 err.setFields("globalMrURL");
 245
 246                                 return null;
 247                         }
 248                 }
 249
 250
 251                 if ( topic.getNumClients() > 0 ) {
 252                         ArrayList<MR_Client> clients = new ArrayList<MR_Client>(topic.getClients());
 253
 254
 255                         ArrayList<MR_Client> clients2 = new ArrayList<MR_Client>();
 256                         for ( Iterator<MR_Client> it = clients.iterator(); it.hasNext(); ) {
 257                                 MR_Client c = it.next();
 258
 259                                 logger.info( "c fqtn=" + c.getFqtn() + " ID=" + c.getMrClientId() + " url=" + c.getTopicURL());
 260                                 MR_Client nc = new MR_Client( c.getDcaeLocationName(), topic.getFqtn(), c.getClientRole(), c.getAction());
 261                                 nc.setFqtn(topic.getFqtn());
 262                                 nc.setClientIdentity( c.getClientIdentity());
 263                                 logger.info( "nc fqtn=" + nc.getFqtn() + " ID=" + nc.getMrClientId() + " url=" + nc.getTopicURL());
 264                                 clients2.add( clientService.addMr_Client(nc, topic, err));
 265                                 if ( ! err.is2xx()) {
 266                                         return null;
 267                                 }
 268                         }
 269
 270                         topic.setClients(clients2);
 271                 }
 272
 273                 Topic ntopic = checkForBridge( topic, err );
 274                 if ( ntopic == null ) {
 275                         topic.setStatus( DmaapObject_Status.INVALID);
 276                         if ( ! err.is2xx()) {
 277                                 return null;
 278                         }
 279                 }
 280
 281
 282                 mr_topics.put( nFqtn, ntopic );
 283
 284                 err.setCode(Status.OK.getStatusCode());
 285                 return ntopic;
 286         }
 287
 288
 289         public Topic updateTopic( Topic topic, ApiError err ) {
 290                 logger.info( "Entry: updateTopic");
 291                 if ( topic.getFqtn().isEmpty()) {
 292                         return null;
 293                 }
 294                 Topic ntopic = checkForBridge( topic, err );
 295                 if ( ntopic == null ) {
 296                         topic.setStatus( DmaapObject_Status.INVALID);
 297                         if ( ! err.is2xx() ) {
 298                                 return null;
 299                         }
 300                 }
 301                 if(ntopic != null) {
 302                         mr_topics.put( ntopic.getFqtn(), ntopic );
 303                 }
 304                 err.setCode(Status.OK.getStatusCode());
 305                 return ntopic;
 306         }
 307
 308         public Topic removeTopic( String pubId, ApiError apiError ) {
 309                 Topic topic = mr_topics.get(pubId);
 310                 if ( topic == null ) {
 311                         apiError.setCode(Status.NOT_FOUND.getStatusCode());
 312                         apiError.setMessage("Topic " + pubId + " does not exist");
 313                         apiError.setFields("fqtn");
 314                         return null;
 315                 }
 316                 ArrayList<MR_Client> clients = new ArrayList<MR_Client>(clientService.getAllMrClients( pubId ));
 317                 for ( Iterator<MR_Client> it = clients.iterator(); it.hasNext(); ) {
 318                         MR_Client c = it.next();
 319
 320
 321                         clientService.removeMr_Client(c.getMrClientId(), false, apiError);
 322                         if ( ! apiError.is2xx()) {
 323                                 return null;
 324                         }
 325                 }
 326                 apiError.setCode(Status.OK.getStatusCode());
 327                 return mr_topics.remove(pubId);
 328         }
 329         public static ApiError setBridgeClientPerms( MR_Cluster node ) {
 330                 DmaapConfig p = (DmaapConfig)DmaapConfig.getConfig();
 331                 String mmProvRole = p.getProperty("MM.ProvRole");
 332                 String mmAgentRole = p.getProperty("MM.AgentRole");
 333                 String[] Roles = { mmProvRole, mmAgentRole };
 334                 String[] actions = { "view", "pub", "sub" };
 335                 Topic bridgeAdminTopic = new Topic().init();
 336                 bridgeAdminTopic.setTopicName( dmaapSvc.getBridgeAdminFqtn() );
 337                 bridgeAdminTopic.setTopicDescription( "RESERVED topic for MirroMaker Provisioning");
 338                 bridgeAdminTopic.setOwner( "DBC" );
 339
 340                 ArrayList<MR_Client> clients = new ArrayList<MR_Client>();
 341                 for( String role: Roles ) {
 342                         MR_Client client = new MR_Client();
 343                         client.setAction(actions);
 344                         client.setClientRole(role);
 345                         client.setDcaeLocationName( node.getDcaeLocationName());
 346                         clients.add( client );
 347                 }
 348                 bridgeAdminTopic.setClients(clients);
 349
 350                 TopicService ts = new TopicService();
 351                 ApiError err = new ApiError();
 352                 ts.addTopic(bridgeAdminTopic, err, true);
 353
 354                 if ( err.is2xx() || err.getCode() == 409 ){
 355                         err.setCode(200);
 356                         return err;
 357                 }
 358
 359                 errorLogger.error( DmaapbcLogMessageEnum.TOPIC_CREATE_ERROR,  bridgeAdminTopic.getFqtn(), Integer.toString(err.getCode()), err.getFields(), err.getMessage());
 360                 return err;
 361         }
 362
 363
 364         public Topic checkForBridge( Topic topic, ApiError err ) {
 365
 366                 if ( topic.getReplicationCase() == ReplicationType.REPLICATION_NONE ) {
 367                         topic.setStatus( DmaapObject_Status.VALID);
 368                         return topic;
 369                 }
 370
 371                 boolean anythingWrong = false;
 372
 373                 Set<String> groups = clusters.getGroups();
 374                 for ( String g : groups ) {
 375                         anythingWrong |= buildBridge( topic, err, g );
 376                 }
 377                 if ( anythingWrong ) {
 378                         topic.setStatus( DmaapObject_Status.INVALID);
 379                         if ( ! err.is2xx() ) {
 380                                 return null;
 381                         }
 382                 } else {
 383                         topic.setStatus( DmaapObject_Status.VALID);
 384                 }
 385                 return topic;
 386         }
 387
 388         private boolean buildBridge( Topic topic, ApiError err, String group ) {
 389
 390                 boolean anythingWrong = false;
 391                 Graph graph;
 392                 if ( group == null || group.isEmpty() ) {
 393                         graph = new Graph( topic.getClients(), true );
 394                 } else {
 395                         graph = new Graph( topic.getClients(), true, group );
 396                 }
 397                 MR_Cluster groupCentralCluster = null;
 398
 399                 if ( graph.isEmpty() ) {
 400                         return false;
 401                 } else if ( group == null &&  topic.getReplicationCase().involvesFQDN() ) {
 402                         return false;
 403                 } else if ( ! graph.hasCentral() ) {
 404                         logger.warn( "Topic " + topic.getFqtn() + " wants to be " + topic.getReplicationCase() + " but has no central clients");
 405                         return true;
 406                 } else {
 407                         groupCentralCluster = clusters.getMr_ClusterByLoc(graph.getCentralLoc());
 408                 }
 409                 Collection<String> clientLocations = graph.getKeys();
 410                 for( String loc : clientLocations ) {
 411                         logger.info( "loc=" + loc );
 412                         DcaeLocation location = locations.getDcaeLocation(loc);
 413                         MR_Cluster cluster = clusters.getMr_ClusterByLoc(loc);
 414                         logger.info( "cluster=" + cluster );
 415
 416
 417
 418                         String source = null;
 419                         String target = null;
 420
 421                         /*
 422                          * Provision Edge to Central bridges...
 423                          */
 424                         if ( ! location.isCentral()  && ! graph.getCentralLoc().equals(cluster.getDcaeLocationName()) ) {
 425                                 switch( topic.getReplicationCase() ) {
 426                                 case REPLICATION_EDGE_TO_CENTRAL:
 427                                 case REPLICATION_EDGE_TO_CENTRAL_TO_GLOBAL:  // NOTE: this is for E2C portion only
 428                                         source = cluster.getFqdn();
 429                                         target = centralCname;
 430                                         break;
 431                                 case REPLICATION_CENTRAL_TO_EDGE:
 432                                 case REPLICATION_GLOBAL_TO_CENTRAL_TO_EDGE:  // NOTE: this is for C2E portion only
 433                                         source = centralCname;
 434                                         target = cluster.getFqdn();
 435                                         break;
 436                                 case REPLICATION_CENTRAL_TO_GLOBAL:
 437                                 case REPLICATION_GLOBAL_TO_CENTRAL:
 438                                 case REPLICATION_FQDN_TO_GLOBAL:
 439                                 case REPLICATION_GLOBAL_TO_FQDN:
 440                                         break;
 441
 442                                 case REPLICATION_EDGE_TO_FQDN:
 443                                 case REPLICATION_EDGE_TO_FQDN_TO_GLOBAL:  // NOTE: this is for E2C portion only
 444                                         source = cluster.getFqdn();
 445                                         target = groupCentralCluster.getFqdn();
 446                                         break;
 447                                 case REPLICATION_FQDN_TO_EDGE:
 448                                 case REPLICATION_GLOBAL_TO_FQDN_TO_EDGE:  // NOTE: this is for F2E portion only
 449                                         source = groupCentralCluster.getFqdn();
 450                                         target = cluster.getFqdn();
 451                                         break;
 452
 453                                 default:
 454                                         logger.error( "Unexpected value for ReplicationType ("+ topic.getReplicationCase() + ") for topic " + topic.getFqtn() );
 455                                         anythingWrong = true;
 456                                         err.setCode(400);
 457                                         err.setFields("topic=" + topic.genFqtn() + " replicationCase="
 458                                                         + topic.getReplicationCase() );
 459                                         err.setMessage("Unexpected value for ReplicationType");
 460                                         continue;
 461                                 }
 462
 463                         } else if ( location.isCentral() && graph.getCentralLoc().equals(cluster.getDcaeLocationName()) ) {
 464                                 /*
 465                                  * Provision Central to Global bridges
 466                                  */
 467                                 switch( topic.getReplicationCase() ) {
 468
 469                                 case REPLICATION_CENTRAL_TO_GLOBAL:
 470                                 case REPLICATION_EDGE_TO_CENTRAL_TO_GLOBAL:
 471                                         source = centralCname;
 472                                         target = topic.getGlobalMrURL();
 473                                         break;
 474                                 case REPLICATION_GLOBAL_TO_CENTRAL:
 475                                 case REPLICATION_GLOBAL_TO_CENTRAL_TO_EDGE:  // NOTE: this is for G2C portion only
 476                                         source = topic.getGlobalMrURL();
 477                                         target = centralCname;
 478                                         break;
 479
 480                                 case REPLICATION_EDGE_TO_FQDN_TO_GLOBAL:  // NOTE: this is for E2F portion only
 481                                         source = groupCentralCluster.getFqdn();
 482                                         target = topic.getGlobalMrURL();
 483                                         break;
 484
 485                                 case REPLICATION_FQDN_TO_GLOBAL:
 486                                         source = groupCentralCluster.getFqdn();
 487                                         target = topic.getGlobalMrURL();
 488                                         break;
 489
 490                                 case REPLICATION_GLOBAL_TO_FQDN:
 491                                 case REPLICATION_GLOBAL_TO_FQDN_TO_EDGE:  // NOTE: this is for G2F portion only
 492                                         source = topic.getGlobalMrURL();
 493                                         target = groupCentralCluster.getFqdn();
 494                                         break;
 495
 496                                 case REPLICATION_FQDN_TO_EDGE:
 497                                 case REPLICATION_EDGE_TO_FQDN:
 498                                 case REPLICATION_EDGE_TO_CENTRAL:
 499                                 case REPLICATION_CENTRAL_TO_EDGE:
 500                                         break;
 501                                 default:
 502                                         logger.error( "Unexpected value for ReplicationType ("+ topic.getReplicationCase() + ") for topic " + topic.getFqtn() );
 503                                         anythingWrong = true;
 504                                         err.setCode(400);
 505                                         err.setFields("topic=" + topic.genFqtn() + " replicationCase="
 506                                                         + topic.getReplicationCase() );
 507                                         err.setMessage("Unexpected value for ReplicationType");
 508                                         continue;
 509                                 }
 510                         } else {
 511                                 logger.warn( "dcaeLocation " + loc + " is neither Edge nor Central so no mmagent provisioning was done");
 512                                 anythingWrong = true;
 513                                 continue;
 514                         }
 515                         if ( source != null && target != null ) {
 516                                 try {
 517                                         logger.info( "Create a MM from " + source + " to " + target );
 518                                         MirrorMaker mm = bridge.getNextMM( source, target, topic.getFqtn());
 519                                         mm.addTopic(topic.getFqtn());
 520                                         bridge.updateMirrorMaker(mm);
 521                                 } catch ( Exception ex ) {
 522                                         err.setCode(500);
 523                                         err.setFields( "mirror_maker.topic");
 524                                         err.setMessage("Unexpected condition: " + ex );
 525                                         anythingWrong = true;
 526                                         break;
 527                                 }
 528                         }
 529
 530
 531                 }
 532                 return  anythingWrong;
 533
 534         }
 535
 536
 537         /*
 538          * Prior to 1707, we only supported EDGE_TO_CENTRAL replication.
 539          * This was determined automatically based on presence of edge publishers and central subscribers.
 540          * The following method is a modification of that original logic, to preserve some backwards compatibility,
 541          * i.e. to be used when no ReplicationType is specified.
 542          */
 543         public ReplicationType reviewTopic( Topic topic ) {
 544
 545
 546                 if ( topic.getNumClients() > 1 ) {
 547                         Graph graph = new Graph( topic.getClients(), false );
 548
 549                         String centralFqdn = new String();
 550                         if ( graph.hasCentral() ) {
 551                                 DmaapConfig p = (DmaapConfig)DmaapConfig.getConfig();
 552                                 centralFqdn = p.getProperty("MR.CentralCname");
 553                         }
 554
 555                         Collection<String> locations = graph.getKeys();
 556                         for( String loc : locations ) {
 557                                 logger.info( "loc=" + loc );
 558                                 MR_Cluster cluster = clusters.getMr_ClusterByLoc(loc);
 559                                 if ( cluster == null ) {
 560                                         logger.info( "No MR cluster for location " + loc );
 561                                         continue;
 562                                 }
 563                                 if ( graph.hasCentral() &&  ! graph.getCentralLoc().equals(cluster.getDcaeLocationName())) {
 564                                         logger.info( "Detected case for EDGE_TO_CENTRAL from " + cluster.getFqdn() + " to " + centralFqdn );
 565                                         return ReplicationType.REPLICATION_EDGE_TO_CENTRAL;
 566
 567                                 }
 568
 569                         }
 570                 }
 571
 572                 return ReplicationType.REPLICATION_NONE;
 573         }
 574
 575 }