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.DmaapObject.DmaapObject_Status;
  46 import org.onap.dmaap.dbcapi.model.MR_Client;
  47 import org.onap.dmaap.dbcapi.model.MR_Cluster;
  48 import org.onap.dmaap.dbcapi.model.MirrorMaker;
  49 import org.onap.dmaap.dbcapi.model.ReplicationType;
  50 import org.onap.dmaap.dbcapi.model.Topic;
  51 import org.onap.dmaap.dbcapi.util.DmaapConfig;
  52 import org.onap.dmaap.dbcapi.util.Fqdn;
  53 import org.onap.dmaap.dbcapi.util.Graph;
  54
  55 public class TopicService extends BaseLoggingClass {
  56
  57
  58
  59         // REF: https://wiki.web.att.com/pages/viewpage.action?pageId=519703122
  60         private static String defaultGlobalMrHost;
  61
  62         private Map<String, Topic> mr_topics = DatabaseClass.getTopics();
  63
  64         private static DmaapService dmaapSvc = new DmaapService();
  65         private MR_ClientService clientService = new MR_ClientService();
  66         private MR_ClusterService clusters = new MR_ClusterService();
  67         private DcaeLocationService locations = new DcaeLocationService();
  68         private MirrorMakerService      bridge = new MirrorMakerService();
  69
  70         private static String centralCname;
  71         private static boolean createTopicRoles;
  72         private boolean strictGraph = true;
  73
  74
  75         public TopicService(){
  76                 DmaapConfig p = (DmaapConfig)DmaapConfig.getConfig();
  77                 defaultGlobalMrHost = p.getProperty("MR.globalHost", "global.host.not.set");
  78                 centralCname = p.getProperty("MR.CentralCname");
  79                 createTopicRoles = "true".equalsIgnoreCase(p.getProperty("aaf.CreateTopicRoles", "true"));
  80                 String unit_test = p.getProperty( "UnitTest", "No" );
  81                 if ( unit_test.equals( "Yes" ) ) {
  82                         strictGraph = false;
  83                 }
  84                 logger.info( "TopicService properties: CentralCname=" + centralCname +
  85                                 "   defaultGlobarlMrHost=" + defaultGlobalMrHost +
  86                                 " createTopicRoles=" + createTopicRoles );
  87         }
  88
  89         public Map<String, Topic> getTopics() {
  90                 return mr_topics;
  91         }
  92
  93         public List<Topic> getAllTopics() {
  94                 return getAllTopics( true );
  95         }
  96         public List<Topic> getAllTopicsWithoutClients() {
  97                 return getAllTopics(false);
  98         }
  99
 100         private List<Topic> getAllTopics( Boolean withClients ) {
 101                 ArrayList<Topic> topics = new ArrayList<>(mr_topics.values());
 102                 if ( withClients ) {
 103                         for( Topic topic: topics ) {
 104                                 topic.setClients( clientService.getAllMrClients(topic.getFqtn()));
 105                         }
 106                 }
 107                 return topics;
 108         }
 109
 110
 111         public Topic getTopic( String key, ApiError apiError ) {
 112                 logger.info( "getTopic: key=" + key);
 113                 Topic t = mr_topics.get( key );
 114                 if ( t == null ) {
 115                         apiError.setCode(Status.NOT_FOUND.getStatusCode());
 116                         apiError.setFields( "fqtn");
 117                         apiError.setMessage("topic with fqtn " + key + " not found");
 118                         return null;
 119                 }
 120                 t.setClients( clientService.getAllMrClients( key ));
 121                 apiError.setCode(Status.OK.getStatusCode());
 122                 return t;
 123         }
 124
 125         private void aafTopicSetup(Topic topic, ApiError err ) {
 126
 127                 String nsr = dmaapSvc.getDmaap().getTopicNsRoot();
 128                 if ( nsr == null ) {
 129                         err.setCode(500);
 130                         err.setMessage("Unable to establish AAF namespace root: (check /dmaap object)"  );
 131                         err.setFields("topicNsRoot");
 132                         return;
 133                 }
 134
 135                 // establish AAF Connection using TopicMgr identity
 136                 AafService aaf = new AafService(ServiceType.AAF_TopicMgr);
 137
 138                 AafRole pubRole = null;
 139                 AafRole subRole = null;
 140
 141                 // creating Topic Roles was not an original feature.
 142                 // For backwards compatibility, only do this if the feature is enabled.
 143                 // Also, if the namespace of the topic is a foreign namespace, (i.e. not the same as our root ns)
 144                 // then we likely don't have permission to create sub-ns and Roles so don't try.
 145                 if ( createTopicRoles && topic.getFqtn().startsWith(nsr)) {
 146                         // create AAF namespace for this topic
 147                         AafNamespace ns = new AafNamespace( topic.getFqtn(), aaf.getIdentity());
 148                         {
 149                                 int rc = aaf.addNamespace( ns );
 150                                 if ( rc != 201 && rc != 409 ) {
 151                                         err.setCode(500);
 152                                         err.setMessage("Unexpected response from AAF:" + rc );
 153                                         err.setFields("namespace:" + topic.getFqtn() + " identity="+ aaf.getIdentity());
 154                                         return;
 155                                 }
 156                         }
 157
 158                         // create AAF Roles for MR clients of this topic
 159                         String rn = "publisher";
 160                         pubRole = new AafRole( topic.getFqtn(), rn );
 161                         int rc = aaf.addRole( pubRole );
 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.setPublisherRole( pubRole.getFullyQualifiedRole() );
 169
 170                         rn = "subscriber";
 171                         subRole = new AafRole( topic.getFqtn(), rn );
 172                         rc = aaf.addRole( subRole );
 173                         if ( rc != 201 && rc != 409 ) {
 174                                 err.setCode(500);
 175                                 err.setMessage("Unexpected response from AAF:" + rc );
 176                                 err.setFields("topic:" + topic.getFqtn() + " role="+ rn);
 177                                 return;
 178                         }
 179                         topic.setSubscriberRole( subRole.getFullyQualifiedRole() );
 180                 }
 181
 182                 // create AAF perms checked by MR
 183                 String instance = ":topic." + topic.getFqtn();
 184                 String[] actions = { "pub", "sub", "view" };
 185                 String t = dmaapSvc.getTopicPerm();
 186                 for ( String action : actions ){
 187                         DmaapPerm perm = new DmaapPerm( t, instance, action );
 188                         int rc = aaf.addPerm( perm );
 189                         if ( rc != 201 && rc != 409 ) {
 190                                 err.setCode(500);
 191                                 err.setMessage("Unexpected response from AAF:" + rc );
 192                                 err.setFields("t="+t + " instance="+ instance + " action="+ action);
 193                                 return;
 194                         }
 195                         if ( createTopicRoles ) {
 196                                 // Grant perms to our default Roles
 197                                 if ( action.equals( "pub") || action.equals( "view") ) {
 198                                         DmaapGrant g = new DmaapGrant( perm, pubRole.getFullyQualifiedRole() );
 199                                         rc = aaf.addGrant( g );
 200                                         if ( rc != 201 && rc != 409 ) {
 201                                                 err.setCode(rc);
 202                                                 err.setMessage( "Grant of " + perm.toString() + " failed for " + pubRole.getFullyQualifiedRole() );
 203                                                 logger.warn( err.getMessage());
 204                                                 return;
 205                                         }
 206                                 }
 207                                 if ( action.equals( "sub") || action.equals( "view") ) {
 208                                         DmaapGrant g = new DmaapGrant( perm, subRole.getFullyQualifiedRole() );
 209                                         rc = aaf.addGrant( g );
 210                                         if ( rc != 201 && rc != 409 ) {
 211                                                 err.setCode(rc);
 212                                                 err.setMessage( "Grant of " + perm.toString() + " failed for " + subRole.getFullyQualifiedRole() );
 213                                                 logger.warn( err.getMessage());
 214                                                 return;
 215                                         }
 216                                 }
 217                         }
 218
 219                 }
 220         }
 221
 222         public Topic addTopic( Topic topic, ApiError err, Boolean useExisting ) {
 223                 logger.info( "Entry: addTopic");
 224                 logger.info( "Topic name=" + topic.getTopicName() + " fqtnStyle=" + topic.getFqtnStyle() );
 225                 String nFqtn =  topic.genFqtn();
 226                 logger.info( "FQTN=" + nFqtn );
 227                 Topic pTopic = getTopic( nFqtn, err );
 228                 if ( pTopic != null ) {
 229                         String t = "topic already exists: " + nFqtn;
 230                         logger.info( t );
 231                         if (  useExisting ) {
 232                                 err.setCode(Status.OK.getStatusCode());
 233                                 return pTopic;
 234                         }
 235                         err.setMessage( t );
 236                         err.setFields( "fqtn");
 237                         err.setCode(Status.CONFLICT.getStatusCode());
 238                         return null;
 239                 }
 240                 err.reset();  // err filled with NOT_FOUND is expected case, but don't want to litter...
 241
 242                 topic.setFqtn( nFqtn );
 243
 244                 aafTopicSetup( topic, err );
 245                 if ( err.getCode() >= 400 ) {
 246                         return null;
 247                 }
 248
 249                 if ( topic.getReplicationCase().involvesGlobal() ) {
 250                         if ( topic.getGlobalMrURL() == null ) {
 251                                 topic.setGlobalMrURL(defaultGlobalMrHost);
 252                         }
 253                         if ( ! Fqdn.isValid( topic.getGlobalMrURL())) {
 254                                 logger.error( "GlobalMR FQDN not valid: " + topic.getGlobalMrURL());
 255                                 topic.setStatus( DmaapObject_Status.INVALID);
 256                                 err.setCode(500);
 257                                 err.setMessage("Value is not a valid FQDN:" +  topic.getGlobalMrURL() );
 258                                 err.setFields("globalMrURL");
 259
 260                                 return null;
 261                         }
 262                 }
 263
 264
 265                 if ( topic.getNumClients() > 0 ) {
 266                         ArrayList<MR_Client> clients = new ArrayList<MR_Client>(topic.getClients());
 267
 268
 269                         ArrayList<MR_Client> clients2 = new ArrayList<MR_Client>();
 270                         for ( Iterator<MR_Client> it = clients.iterator(); it.hasNext(); ) {
 271                                 MR_Client c = it.next();
 272
 273                                 logger.info( "c fqtn=" + c.getFqtn() + " ID=" + c.getMrClientId() + " url=" + c.getTopicURL());
 274                                 MR_Client nc = new MR_Client( c.getDcaeLocationName(), topic.getFqtn(), c.getClientRole(), c.getAction());
 275                                 nc.setFqtn(topic.getFqtn());
 276                                 nc.setClientIdentity( c.getClientIdentity());
 277                                 logger.info( "nc fqtn=" + nc.getFqtn() + " ID=" + nc.getMrClientId() + " url=" + nc.getTopicURL());
 278                                 clients2.add( clientService.addMr_Client(nc, topic, err));
 279                                 if ( ! err.is2xx()) {
 280                                         return null;
 281                                 }
 282                         }
 283
 284                         topic.setClients(clients2);
 285                 }
 286
 287                 Topic ntopic = checkForBridge( topic, err );
 288                 if ( ntopic == null ) {
 289                         topic.setStatus( DmaapObject_Status.INVALID);
 290                         if ( ! err.is2xx()) {
 291                                 return null;
 292                         }
 293                 }
 294
 295
 296                 mr_topics.put( nFqtn, ntopic );
 297
 298                 err.setCode(Status.OK.getStatusCode());
 299                 return ntopic;
 300         }
 301
 302
 303         public Topic updateTopic( Topic topic, ApiError err ) {
 304                 logger.info( "updateTopic: entry");
 305                 logger.info( "updateTopic: topic=" + topic);
 306                 logger.info( "updateTopic: fqtn=" + topic.getFqtn() );
 307                 if ( topic.getFqtn().isEmpty()) {
 308                         return null;
 309                 }
 310                 logger.info( "updateTopic: call checkForBridge");
 311                 Topic ntopic = checkForBridge( topic, err );
 312                 if ( ntopic == null ) {
 313                         topic.setStatus( DmaapObject_Status.INVALID);
 314                         if ( ! err.is2xx() ) {
 315                                 return null;
 316                         }
 317                 }
 318                 if(ntopic != null) {
 319                         logger.info( "updateTopic: call put");
 320                         mr_topics.put( ntopic.getFqtn(), ntopic );
 321                 }
 322                 err.setCode(Status.OK.getStatusCode());
 323                 return ntopic;
 324         }
 325
 326         public Topic removeTopic( String pubId, ApiError apiError ) {
 327                 Topic topic = mr_topics.get(pubId);
 328                 if ( topic == null ) {
 329                         apiError.setCode(Status.NOT_FOUND.getStatusCode());
 330                         apiError.setMessage("Topic " + pubId + " does not exist");
 331                         apiError.setFields("fqtn");
 332                         return null;
 333                 }
 334                 ArrayList<MR_Client> clients = new ArrayList<MR_Client>(clientService.getAllMrClients( pubId ));
 335                 for ( Iterator<MR_Client> it = clients.iterator(); it.hasNext(); ) {
 336                         MR_Client c = it.next();
 337
 338
 339                         clientService.removeMr_Client(c.getMrClientId(), false, apiError);
 340                         if ( ! apiError.is2xx()) {
 341                                 return null;
 342                         }
 343                 }
 344                 apiError.setCode(Status.OK.getStatusCode());
 345                 return mr_topics.remove(pubId);
 346         }
 347         public static ApiError setBridgeClientPerms( MR_Cluster node ) {
 348                 DmaapConfig p = (DmaapConfig)DmaapConfig.getConfig();
 349                 String mmProvRole = p.getProperty("MM.ProvRole");
 350                 String mmAgentRole = p.getProperty("MM.AgentRole");
 351                 String[] Roles = { mmProvRole, mmAgentRole };
 352                 String[] actions = { "view", "pub", "sub" };
 353                 Topic bridgeAdminTopic = new Topic().init();
 354                 bridgeAdminTopic.setTopicName( dmaapSvc.getBridgeAdminFqtn() );
 355                 bridgeAdminTopic.setTopicDescription( "RESERVED topic for MirroMaker Provisioning");
 356                 bridgeAdminTopic.setOwner( "DBC" );
 357
 358                 ArrayList<MR_Client> clients = new ArrayList<MR_Client>();
 359                 for( String role: Roles ) {
 360                         MR_Client client = new MR_Client();
 361                         client.setAction(actions);
 362                         client.setClientRole(role);
 363                         client.setDcaeLocationName( node.getDcaeLocationName());
 364                         clients.add( client );
 365                 }
 366                 bridgeAdminTopic.setClients(clients);
 367
 368                 TopicService ts = new TopicService();
 369                 ApiError err = new ApiError();
 370                 ts.addTopic(bridgeAdminTopic, err, true);
 371
 372                 if ( err.is2xx() || err.getCode() == 409 ){
 373                         err.setCode(200);
 374                         return err;
 375                 }
 376
 377                 errorLogger.error( DmaapbcLogMessageEnum.TOPIC_CREATE_ERROR,  bridgeAdminTopic.getFqtn(), Integer.toString(err.getCode()), err.getFields(), err.getMessage());
 378                 return err;
 379         }
 380
 381
 382         public Topic checkForBridge( Topic topic, ApiError err ) {
 383                 logger.info( "checkForBridge: entry");
 384                 logger.info( "fqtn=" + topic.getFqtn() + "replicatonType=" + topic.getReplicationCase());
 385                 if ( topic.getReplicationCase() == ReplicationType.REPLICATION_NONE ) {
 386                         topic.setStatus( DmaapObject_Status.VALID);
 387                         return topic;
 388                 }
 389
 390                 boolean anythingWrong = false;
 391
 392                 Set<String> groups = clusters.getGroups();
 393                 for ( String g : groups ) {
 394                         logger.info( "buildBridge for " + topic.getFqtn() + " on group" + g);
 395                         anythingWrong |= buildBridge( topic, err, g );
 396                 }
 397                 if ( anythingWrong ) {
 398                         topic.setStatus( DmaapObject_Status.INVALID);
 399                         if ( ! err.is2xx() ) {
 400                                 return null;
 401                         }
 402                 } else {
 403                         topic.setStatus( DmaapObject_Status.VALID);
 404                 }
 405                 return topic;
 406         }
 407
 408         private boolean buildBridge( Topic topic, ApiError err, String group ) {
 409                 logger.info( "buildBridge: entry");
 410                 boolean anythingWrong = false;
 411                 Graph graph;
 412                 logger.info( "buildBridge: strictGraph=" + strictGraph );
 413                 if ( group == null || group.isEmpty() ) {
 414                         graph = new Graph( topic.getClients(), strictGraph );
 415                 } else {
 416                         graph = new Graph( topic.getClients(), strictGraph, group );
 417                 }
 418                 logger.info( "buildBridge: graph=" + graph );
 419                 MR_Cluster groupCentralCluster = null;
 420
 421
 422                 if ( graph.isEmpty() ) {
 423                         logger.info( "buildBridge: graph is empty.  return false" );
 424                         return false;
 425                 } else if ( group == null &&  topic.getReplicationCase().involvesFQDN() ) {
 426                         logger.info( "buildBridge: group is null and replicationCaseInvolvesFQDN. return false" );
 427                         return false;
 428                 } else if ( ! graph.hasCentral() ) {
 429                         logger.warn( "Topic " + topic.getFqtn() + " wants to be " + topic.getReplicationCase() + " but has no central clients");
 430                         return true;
 431                 } else {
 432                         groupCentralCluster = clusters.getMr_ClusterByLoc(graph.getCentralLoc());
 433                 }
 434                 Collection<String> clientLocations = graph.getKeys();
 435                 for( String loc : clientLocations ) {
 436                         logger.info( "loc=" + loc );
 437                         DcaeLocation location = locations.getDcaeLocation(loc);
 438                         MR_Cluster cluster = clusters.getMr_ClusterByLoc(loc);
 439                         logger.info( "cluster=" + cluster );
 440
 441
 442
 443                         String source = null;
 444                         String target = null;
 445
 446                         /*
 447                          * Provision Edge to Central bridges...
 448                          */
 449                         if ( ! location.isCentral()  && ! graph.getCentralLoc().equals(cluster.getDcaeLocationName()) ) {
 450                                 switch( topic.getReplicationCase() ) {
 451                                 case REPLICATION_EDGE_TO_CENTRAL:
 452                                 case REPLICATION_EDGE_TO_CENTRAL_TO_GLOBAL:  // NOTE: this is for E2C portion only
 453                                         source = cluster.getFqdn();
 454                                         target = centralCname;
 455                                         break;
 456                                 case REPLICATION_CENTRAL_TO_EDGE:
 457                                 case REPLICATION_GLOBAL_TO_CENTRAL_TO_EDGE:  // NOTE: this is for C2E portion only
 458                                         source = centralCname;
 459                                         target = cluster.getFqdn();
 460                                         break;
 461                                 case REPLICATION_CENTRAL_TO_GLOBAL:
 462                                 case REPLICATION_GLOBAL_TO_CENTRAL:
 463                                 case REPLICATION_FQDN_TO_GLOBAL:
 464                                 case REPLICATION_GLOBAL_TO_FQDN:
 465                                         break;
 466
 467                                 case REPLICATION_EDGE_TO_FQDN:
 468                                 case REPLICATION_EDGE_TO_FQDN_TO_GLOBAL:  // NOTE: this is for E2C portion only
 469                                         source = cluster.getFqdn();
 470                                         target = groupCentralCluster.getFqdn();
 471                                         break;
 472                                 case REPLICATION_FQDN_TO_EDGE:
 473                                 case REPLICATION_GLOBAL_TO_FQDN_TO_EDGE:  // NOTE: this is for F2E portion only
 474                                         source = groupCentralCluster.getFqdn();
 475                                         target = cluster.getFqdn();
 476                                         break;
 477
 478                                 default:
 479                                         logger.error( "Unexpected value for ReplicationType ("+ topic.getReplicationCase() + ") for topic " + topic.getFqtn() );
 480                                         anythingWrong = true;
 481                                         err.setCode(400);
 482                                         err.setFields("topic=" + topic.genFqtn() + " replicationCase="
 483                                                         + topic.getReplicationCase() );
 484                                         err.setMessage("Unexpected value for ReplicationType");
 485                                         continue;
 486                                 }
 487
 488                         } else if ( location.isCentral() && graph.getCentralLoc().equals(cluster.getDcaeLocationName()) ) {
 489                                 /*
 490                                  * Provision Central to Global bridges
 491                                  */
 492                                 switch( topic.getReplicationCase() ) {
 493
 494                                 case REPLICATION_CENTRAL_TO_GLOBAL:
 495                                 case REPLICATION_EDGE_TO_CENTRAL_TO_GLOBAL:
 496                                         source = centralCname;
 497                                         target = topic.getGlobalMrURL();
 498                                         break;
 499                                 case REPLICATION_GLOBAL_TO_CENTRAL:
 500                                 case REPLICATION_GLOBAL_TO_CENTRAL_TO_EDGE:  // NOTE: this is for G2C portion only
 501                                         source = topic.getGlobalMrURL();
 502                                         target = centralCname;
 503                                         break;
 504
 505                                 case REPLICATION_EDGE_TO_FQDN_TO_GLOBAL:  // NOTE: this is for E2F portion only
 506                                         source = groupCentralCluster.getFqdn();
 507                                         target = topic.getGlobalMrURL();
 508                                         break;
 509
 510                                 case REPLICATION_FQDN_TO_GLOBAL:
 511                                         source = groupCentralCluster.getFqdn();
 512                                         target = topic.getGlobalMrURL();
 513                                         break;
 514
 515                                 case REPLICATION_GLOBAL_TO_FQDN:
 516                                 case REPLICATION_GLOBAL_TO_FQDN_TO_EDGE:  // NOTE: this is for G2F portion only
 517                                         source = topic.getGlobalMrURL();
 518                                         target = groupCentralCluster.getFqdn();
 519                                         break;
 520
 521                                 case REPLICATION_FQDN_TO_EDGE:
 522                                 case REPLICATION_EDGE_TO_FQDN:
 523                                 case REPLICATION_EDGE_TO_CENTRAL:
 524                                 case REPLICATION_CENTRAL_TO_EDGE:
 525                                         break;
 526                                 default:
 527                                         logger.error( "Unexpected value for ReplicationType ("+ topic.getReplicationCase() + ") for topic " + topic.getFqtn() );
 528                                         anythingWrong = true;
 529                                         err.setCode(400);
 530                                         err.setFields("topic=" + topic.genFqtn() + " replicationCase="
 531                                                         + topic.getReplicationCase() );
 532                                         err.setMessage("Unexpected value for ReplicationType");
 533                                         continue;
 534                                 }
 535                         } else {
 536                                 logger.warn( "dcaeLocation " + loc + " is neither Edge nor Central so no mmagent provisioning was done");
 537                                 anythingWrong = true;
 538                                 continue;
 539                         }
 540                         if ( source != null && target != null ) {
 541                                 try {
 542                                         logger.info( "Create a MM from " + source + " to " + target );
 543                                         MirrorMaker mm = bridge.getNextMM( source, target, topic.getFqtn());
 544                                         mm.addTopic(topic.getFqtn());
 545                                         bridge.updateMirrorMaker(mm);
 546                                 } catch ( Exception ex ) {
 547                                         err.setCode(500);
 548                                         err.setFields( "mirror_maker.topic");
 549                                         err.setMessage("Unexpected condition: " + ex );
 550                                         anythingWrong = true;
 551                                         break;
 552                                 }
 553                         }
 554
 555
 556                 }
 557                 return  anythingWrong;
 558
 559         }
 560
 561
 562         /*
 563          * Prior to 1707, we only supported EDGE_TO_CENTRAL replication.
 564          * This was determined automatically based on presence of edge publishers and central subscribers.
 565          * The following method is a modification of that original logic, to preserve some backwards compatibility,
 566          * i.e. to be used when no ReplicationType is specified.
 567          */
 568         public ReplicationType reviewTopic( Topic topic ) {
 569
 570
 571                 if ( topic.getNumClients() > 1 ) {
 572                         Graph graph = new Graph( topic.getClients(), false );
 573
 574                         String centralFqdn = new String();
 575                         if ( graph.hasCentral() ) {
 576                                 DmaapConfig p = (DmaapConfig)DmaapConfig.getConfig();
 577                                 centralFqdn = p.getProperty("MR.CentralCname");
 578                         }
 579
 580                         Collection<String> locations = graph.getKeys();
 581                         for( String loc : locations ) {
 582                                 logger.info( "loc=" + loc );
 583                                 MR_Cluster cluster = clusters.getMr_ClusterByLoc(loc);
 584                                 if ( cluster == null ) {
 585                                         logger.info( "No MR cluster for location " + loc );
 586                                         continue;
 587                                 }
 588                                 if ( graph.hasCentral() &&  ! graph.getCentralLoc().equals(cluster.getDcaeLocationName())) {
 589                                         logger.info( "Detected case for EDGE_TO_CENTRAL from " + cluster.getFqdn() + " to " + centralFqdn );
 590                                         return ReplicationType.REPLICATION_EDGE_TO_CENTRAL;
 591
 592                                 }
 593
 594                         }
 595                 }
 596
 597                 return ReplicationType.REPLICATION_NONE;
 598         }
 599
 600 }