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         private static boolean createTopicRoles;
  73         private boolean strictGraph = true;
  74
  75
  76         public TopicService(){
  77                 DmaapConfig p = (DmaapConfig)DmaapConfig.getConfig();
  78                 defaultGlobalMrHost = p.getProperty("MR.globalHost", "global.host.not.set");
  79                 centralCname = p.getProperty("MR.CentralCname");
  80                 createTopicRoles = "true".equalsIgnoreCase(p.getProperty("aaf.CreateTopicRoles", "true"));
  81                 String unit_test = p.getProperty( "UnitTest", "No" );
  82                 if ( unit_test.equals( "Yes" ) ) {
  83                         strictGraph = false;
  84                 }
  85                 logger.info( "TopicService properties: CentralCname=" + centralCname +
  86                                 "   defaultGlobarlMrHost=" + defaultGlobalMrHost +
  87                                 " createTopicRoles=" + createTopicRoles );
  88         }
  89
  90         public Map<String, Topic> getTopics() {
  91                 return mr_topics;
  92         }
  93
  94         public List<Topic> getAllTopics() {
  95                 return getAllTopics( true );
  96         }
  97         public List<Topic> getAllTopicsWithoutClients() {
  98                 return getAllTopics(false);
  99         }
 100
 101         private List<Topic> getAllTopics( Boolean withClients ) {
 102                 ArrayList<Topic> topics = new ArrayList<>(mr_topics.values());
 103                 if ( withClients ) {
 104                         for( Topic topic: topics ) {
 105                                 topic.setClients( clientService.getAllMrClients(topic.getFqtn()));
 106                         }
 107                 }
 108                 return topics;
 109         }
 110
 111
 112         public Topic getTopic( String key, ApiError apiError ) {
 113                 logger.info( "getTopic: key=" + key);
 114                 Topic t = mr_topics.get( key );
 115                 if ( t == null ) {
 116                         apiError.setCode(Status.NOT_FOUND.getStatusCode());
 117                         apiError.setFields( "fqtn");
 118                         apiError.setMessage("topic with fqtn " + key + " not found");
 119                         return null;
 120                 }
 121                 t.setClients( clientService.getAllMrClients( key ));
 122                 apiError.setCode(Status.OK.getStatusCode());
 123                 return t;
 124         }
 125
 126         private void aafTopicSetup(Topic topic, ApiError err ) {
 127
 128                 String nsr = dmaapSvc.getDmaap().getTopicNsRoot();
 129                 if ( nsr == null ) {
 130                         err.setCode(500);
 131                         err.setMessage("Unable to establish AAF namespace root: (check /dmaap object)"  );
 132                         err.setFields("topicNsRoot");
 133                         return;
 134                 }
 135
 136                 // establish AAF Connection using TopicMgr identity
 137                 AafService aaf = new AafService(ServiceType.AAF_TopicMgr);
 138
 139                 AafRole pubRole = null;
 140                 AafRole subRole = null;
 141
 142                 // creating Topic Roles was not an original feature.
 143                 // For backwards compatibility, only do this if the feature is enabled.
 144                 // Also, if the namespace of the topic is a foreign namespace, (i.e. not the same as our root ns)
 145                 // then we likely don't have permission to create sub-ns and Roles so don't try.
 146                 if ( createTopicRoles && topic.getFqtn().startsWith(nsr)) {
 147                         // create AAF namespace for this topic
 148                         AafNamespace ns = new AafNamespace( topic.getFqtn(), aaf.getIdentity());
 149                         {
 150                                 int rc = aaf.addNamespace( ns );
 151                                 if ( rc != 201 && rc != 409 ) {
 152                                         err.setCode(500);
 153                                         err.setMessage("Unexpected response from AAF:" + rc );
 154                                         err.setFields("namespace:" + topic.getFqtn() + " identity="+ aaf.getIdentity());
 155                                         return;
 156                                 }
 157                         }
 158
 159                         // create AAF Roles for MR clients of this topic
 160                         String rn = "publisher";
 161                         pubRole = new AafRole( topic.getFqtn(), rn );
 162                         int rc = aaf.addRole( pubRole );
 163                         if ( rc != 201 && rc != 409 ) {
 164                                 err.setCode(500);
 165                                 err.setMessage("Unexpected response from AAF:" + rc );
 166                                 err.setFields("topic:" + topic.getFqtn() + " role="+ rn);
 167                                 return;
 168                         }
 169                         topic.setPublisherRole( pubRole.getFullyQualifiedRole() );
 170
 171                         rn = "subscriber";
 172                         subRole = new AafRole( topic.getFqtn(), rn );
 173                         rc = aaf.addRole( subRole );
 174                         if ( rc != 201 && rc != 409 ) {
 175                                 err.setCode(500);
 176                                 err.setMessage("Unexpected response from AAF:" + rc );
 177                                 err.setFields("topic:" + topic.getFqtn() + " role="+ rn);
 178                                 return;
 179                         }
 180                         topic.setSubscriberRole( subRole.getFullyQualifiedRole() );
 181                 }
 182
 183                 // create AAF perms checked by MR
 184                 String instance = ":topic." + topic.getFqtn();
 185                 String[] actions = { "pub", "sub", "view" };
 186                 String t = dmaapSvc.getTopicPerm();
 187                 for ( String action : actions ){
 188                         DmaapPerm perm = new DmaapPerm( t, instance, action );
 189                         int rc = aaf.addPerm( perm );
 190                         if ( rc != 201 && rc != 409 ) {
 191                                 err.setCode(500);
 192                                 err.setMessage("Unexpected response from AAF:" + rc );
 193                                 err.setFields("t="+t + " instance="+ instance + " action="+ action);
 194                                 return;
 195                         }
 196                         if ( createTopicRoles ) {
 197                                 // Grant perms to our default Roles
 198                                 if ( action.equals( "pub") || action.equals( "view") ) {
 199                                         DmaapGrant g = new DmaapGrant( perm, pubRole.getFullyQualifiedRole() );
 200                                         rc = aaf.addGrant( g );
 201                                         if ( rc != 201 && rc != 409 ) {
 202                                                 err.setCode(rc);
 203                                                 err.setMessage( "Grant of " + perm.toString() + " failed for " + pubRole.getFullyQualifiedRole() );
 204                                                 logger.warn( err.getMessage());
 205                                                 return;
 206                                         }
 207                                 }
 208                                 if ( action.equals( "sub") || action.equals( "view") ) {
 209                                         DmaapGrant g = new DmaapGrant( perm, subRole.getFullyQualifiedRole() );
 210                                         rc = aaf.addGrant( g );
 211                                         if ( rc != 201 && rc != 409 ) {
 212                                                 err.setCode(rc);
 213                                                 err.setMessage( "Grant of " + perm.toString() + " failed for " + subRole.getFullyQualifiedRole() );
 214                                                 logger.warn( err.getMessage());
 215                                                 return;
 216                                         }
 217                                 }
 218                         }
 219
 220                 }
 221         }
 222
 223         public Topic addTopic( Topic topic, ApiError err, Boolean useExisting ) {
 224                 logger.info( "Entry: addTopic");
 225                 logger.info( "Topic name=" + topic.getTopicName() + " fqtnStyle=" + topic.getFqtnStyle() );
 226                 String nFqtn =  topic.genFqtn();
 227                 logger.info( "FQTN=" + nFqtn );
 228                 Topic pTopic = getTopic( nFqtn, err );
 229                 if ( pTopic != null ) {
 230                         String t = "topic already exists: " + nFqtn;
 231                         logger.info( t );
 232                         if (  useExisting ) {
 233                                 err.setCode(Status.OK.getStatusCode());
 234                                 return pTopic;
 235                         }
 236                         err.setMessage( t );
 237                         err.setFields( "fqtn");
 238                         err.setCode(Status.CONFLICT.getStatusCode());
 239                         return null;
 240                 }
 241                 err.reset();  // err filled with NOT_FOUND is expected case, but don't want to litter...
 242
 243                 topic.setFqtn( nFqtn );
 244
 245                 aafTopicSetup( topic, err );
 246                 if ( err.getCode() >= 400 ) {
 247                         return null;
 248                 }
 249
 250                 if ( topic.getReplicationCase().involvesGlobal() ) {
 251                         if ( topic.getGlobalMrURL() == null ) {
 252                                 topic.setGlobalMrURL(defaultGlobalMrHost);
 253                         }
 254                         if ( ! Fqdn.isValid( topic.getGlobalMrURL())) {
 255                                 logger.error( "GlobalMR FQDN not valid: " + topic.getGlobalMrURL());
 256                                 topic.setStatus( DmaapObject_Status.INVALID);
 257                                 err.setCode(500);
 258                                 err.setMessage("Value is not a valid FQDN:" +  topic.getGlobalMrURL() );
 259                                 err.setFields("globalMrURL");
 260
 261                                 return null;
 262                         }
 263                 }
 264
 265
 266                 if ( topic.getNumClients() > 0 ) {
 267                         ArrayList<MR_Client> clients = new ArrayList<MR_Client>(topic.getClients());
 268
 269
 270                         ArrayList<MR_Client> clients2 = new ArrayList<MR_Client>();
 271                         for ( Iterator<MR_Client> it = clients.iterator(); it.hasNext(); ) {
 272                                 MR_Client c = it.next();
 273
 274                                 logger.info( "c fqtn=" + c.getFqtn() + " ID=" + c.getMrClientId() + " url=" + c.getTopicURL());
 275                                 MR_Client nc = new MR_Client( c.getDcaeLocationName(), topic.getFqtn(), c.getClientRole(), c.getAction());
 276                                 nc.setFqtn(topic.getFqtn());
 277                                 nc.setClientIdentity( c.getClientIdentity());
 278                                 logger.info( "nc fqtn=" + nc.getFqtn() + " ID=" + nc.getMrClientId() + " url=" + nc.getTopicURL());
 279                                 clients2.add( clientService.addMr_Client(nc, topic, err));
 280                                 if ( ! err.is2xx()) {
 281                                         return null;
 282                                 }
 283                         }
 284
 285                         topic.setClients(clients2);
 286                 }
 287
 288                 Topic ntopic = checkForBridge( topic, err );
 289                 if ( ntopic == null ) {
 290                         topic.setStatus( DmaapObject_Status.INVALID);
 291                         if ( ! err.is2xx()) {
 292                                 return null;
 293                         }
 294                 }
 295
 296
 297                 mr_topics.put( nFqtn, ntopic );
 298
 299                 err.setCode(Status.OK.getStatusCode());
 300                 return ntopic;
 301         }
 302
 303
 304         public Topic updateTopic( Topic topic, ApiError err ) {
 305                 logger.info( "updateTopic: entry");
 306                 logger.info( "updateTopic: topic=" + topic);
 307                 logger.info( "updateTopic: fqtn=" + topic.getFqtn() );
 308                 if ( topic.getFqtn().isEmpty()) {
 309                         return null;
 310                 }
 311                 logger.info( "updateTopic: call checkForBridge");
 312                 Topic ntopic = checkForBridge( topic, err );
 313                 if ( ntopic == null ) {
 314                         topic.setStatus( DmaapObject_Status.INVALID);
 315                         if ( ! err.is2xx() ) {
 316                                 return null;
 317                         }
 318                 }
 319                 if(ntopic != null) {
 320                         logger.info( "updateTopic: call put");
 321                         mr_topics.put( ntopic.getFqtn(), ntopic );
 322                 }
 323                 err.setCode(Status.OK.getStatusCode());
 324                 return ntopic;
 325         }
 326
 327         public Topic removeTopic( String pubId, ApiError apiError ) {
 328                 Topic topic = mr_topics.get(pubId);
 329                 if ( topic == null ) {
 330                         apiError.setCode(Status.NOT_FOUND.getStatusCode());
 331                         apiError.setMessage("Topic " + pubId + " does not exist");
 332                         apiError.setFields("fqtn");
 333                         return null;
 334                 }
 335                 ArrayList<MR_Client> clients = new ArrayList<MR_Client>(clientService.getAllMrClients( pubId ));
 336                 for ( Iterator<MR_Client> it = clients.iterator(); it.hasNext(); ) {
 337                         MR_Client c = it.next();
 338
 339
 340                         clientService.removeMr_Client(c.getMrClientId(), false, apiError);
 341                         if ( ! apiError.is2xx()) {
 342                                 return null;
 343                         }
 344                 }
 345                 apiError.setCode(Status.OK.getStatusCode());
 346                 return mr_topics.remove(pubId);
 347         }
 348         public static ApiError setBridgeClientPerms( MR_Cluster node ) {
 349                 DmaapConfig p = (DmaapConfig)DmaapConfig.getConfig();
 350                 String mmProvRole = p.getProperty("MM.ProvRole");
 351                 String mmAgentRole = p.getProperty("MM.AgentRole");
 352                 String[] Roles = { mmProvRole, mmAgentRole };
 353                 String[] actions = { "view", "pub", "sub" };
 354                 Topic bridgeAdminTopic = new Topic().init();
 355                 bridgeAdminTopic.setTopicName( dmaapSvc.getBridgeAdminFqtn() );
 356                 bridgeAdminTopic.setTopicDescription( "RESERVED topic for MirroMaker Provisioning");
 357                 bridgeAdminTopic.setOwner( "DBC" );
 358
 359                 ArrayList<MR_Client> clients = new ArrayList<MR_Client>();
 360                 for( String role: Roles ) {
 361                         MR_Client client = new MR_Client();
 362                         client.setAction(actions);
 363                         client.setClientRole(role);
 364                         client.setDcaeLocationName( node.getDcaeLocationName());
 365                         clients.add( client );
 366                 }
 367                 bridgeAdminTopic.setClients(clients);
 368
 369                 TopicService ts = new TopicService();
 370                 ApiError err = new ApiError();
 371                 ts.addTopic(bridgeAdminTopic, err, true);
 372
 373                 if ( err.is2xx() || err.getCode() == 409 ){
 374                         err.setCode(200);
 375                         return err;
 376                 }
 377
 378                 errorLogger.error( DmaapbcLogMessageEnum.TOPIC_CREATE_ERROR,  bridgeAdminTopic.getFqtn(), Integer.toString(err.getCode()), err.getFields(), err.getMessage());
 379                 return err;
 380         }
 381
 382
 383         public Topic checkForBridge( Topic topic, ApiError err ) {
 384                 logger.info( "checkForBridge: entry");
 385                 logger.info( "fqtn=" + topic.getFqtn() + "replicatonType=" + topic.getReplicationCase());
 386                 if ( topic.getReplicationCase() == ReplicationType.REPLICATION_NONE ) {
 387                         topic.setStatus( DmaapObject_Status.VALID);
 388                         return topic;
 389                 }
 390
 391                 boolean anythingWrong = false;
 392
 393                 Set<String> groups = clusters.getGroups();
 394                 for ( String g : groups ) {
 395                         logger.info( "buildBridge for " + topic.getFqtn() + " on group" + g);
 396                         anythingWrong |= buildBridge( topic, err, g );
 397                 }
 398                 if ( anythingWrong ) {
 399                         topic.setStatus( DmaapObject_Status.INVALID);
 400                         if ( ! err.is2xx() ) {
 401                                 return null;
 402                         }
 403                 } else {
 404                         topic.setStatus( DmaapObject_Status.VALID);
 405                 }
 406                 return topic;
 407         }
 408
 409         private boolean buildBridge( Topic topic, ApiError err, String group ) {
 410                 logger.info( "buildBridge: entry");
 411                 boolean anythingWrong = false;
 412                 Graph graph;
 413                 logger.info( "buildBridge: strictGraph=" + strictGraph );
 414                 if ( group == null || group.isEmpty() ) {
 415                         graph = new Graph( topic.getClients(), strictGraph );
 416                 } else {
 417                         graph = new Graph( topic.getClients(), strictGraph, group );
 418                 }
 419                 logger.info( "buildBridge: graph=" + graph );
 420                 MR_Cluster groupCentralCluster = null;
 421
 422
 423                 if ( graph.isEmpty() ) {
 424                         logger.info( "buildBridge: graph is empty.  return false" );
 425                         return false;
 426                 } else if ( group == null &&  topic.getReplicationCase().involvesFQDN() ) {
 427                         logger.info( "buildBridge: group is null and replicationCaseInvolvesFQDN. return false" );
 428                         return false;
 429                 } else if ( ! graph.hasCentral() ) {
 430                         logger.warn( "Topic " + topic.getFqtn() + " wants to be " + topic.getReplicationCase() + " but has no central clients");
 431                         return true;
 432                 } else {
 433                         groupCentralCluster = clusters.getMr_ClusterByLoc(graph.getCentralLoc());
 434                 }
 435                 Collection<String> clientLocations = graph.getKeys();
 436                 for( String loc : clientLocations ) {
 437                         logger.info( "loc=" + loc );
 438                         DcaeLocation location = locations.getDcaeLocation(loc);
 439                         MR_Cluster cluster = clusters.getMr_ClusterByLoc(loc);
 440                         logger.info( "cluster=" + cluster );
 441
 442
 443
 444                         String source = null;
 445                         String target = null;
 446
 447                         /*
 448                          * Provision Edge to Central bridges...
 449                          */
 450                         if ( ! location.isCentral()  && ! graph.getCentralLoc().equals(cluster.getDcaeLocationName()) ) {
 451                                 switch( topic.getReplicationCase() ) {
 452                                 case REPLICATION_EDGE_TO_CENTRAL:
 453                                 case REPLICATION_EDGE_TO_CENTRAL_TO_GLOBAL:  // NOTE: this is for E2C portion only
 454                                         source = cluster.getFqdn();
 455                                         target = centralCname;
 456                                         break;
 457                                 case REPLICATION_CENTRAL_TO_EDGE:
 458                                 case REPLICATION_GLOBAL_TO_CENTRAL_TO_EDGE:  // NOTE: this is for C2E portion only
 459                                         source = centralCname;
 460                                         target = cluster.getFqdn();
 461                                         break;
 462                                 case REPLICATION_CENTRAL_TO_GLOBAL:
 463                                 case REPLICATION_GLOBAL_TO_CENTRAL:
 464                                 case REPLICATION_FQDN_TO_GLOBAL:
 465                                 case REPLICATION_GLOBAL_TO_FQDN:
 466                                         break;
 467
 468                                 case REPLICATION_EDGE_TO_FQDN:
 469                                 case REPLICATION_EDGE_TO_FQDN_TO_GLOBAL:  // NOTE: this is for E2C portion only
 470                                         source = cluster.getFqdn();
 471                                         target = groupCentralCluster.getFqdn();
 472                                         break;
 473                                 case REPLICATION_FQDN_TO_EDGE:
 474                                 case REPLICATION_GLOBAL_TO_FQDN_TO_EDGE:  // NOTE: this is for F2E portion only
 475                                         source = groupCentralCluster.getFqdn();
 476                                         target = cluster.getFqdn();
 477                                         break;
 478
 479                                 default:
 480                                         logger.error( "Unexpected value for ReplicationType ("+ topic.getReplicationCase() + ") for topic " + topic.getFqtn() );
 481                                         anythingWrong = true;
 482                                         err.setCode(400);
 483                                         err.setFields("topic=" + topic.genFqtn() + " replicationCase="
 484                                                         + topic.getReplicationCase() );
 485                                         err.setMessage("Unexpected value for ReplicationType");
 486                                         continue;
 487                                 }
 488
 489                         } else if ( location.isCentral() && graph.getCentralLoc().equals(cluster.getDcaeLocationName()) ) {
 490                                 /*
 491                                  * Provision Central to Global bridges
 492                                  */
 493                                 switch( topic.getReplicationCase() ) {
 494
 495                                 case REPLICATION_CENTRAL_TO_GLOBAL:
 496                                 case REPLICATION_EDGE_TO_CENTRAL_TO_GLOBAL:
 497                                         source = centralCname;
 498                                         target = topic.getGlobalMrURL();
 499                                         break;
 500                                 case REPLICATION_GLOBAL_TO_CENTRAL:
 501                                 case REPLICATION_GLOBAL_TO_CENTRAL_TO_EDGE:  // NOTE: this is for G2C portion only
 502                                         source = topic.getGlobalMrURL();
 503                                         target = centralCname;
 504                                         break;
 505
 506                                 case REPLICATION_EDGE_TO_FQDN_TO_GLOBAL:  // NOTE: this is for E2F portion only
 507                                         source = groupCentralCluster.getFqdn();
 508                                         target = topic.getGlobalMrURL();
 509                                         break;
 510
 511                                 case REPLICATION_FQDN_TO_GLOBAL:
 512                                         source = groupCentralCluster.getFqdn();
 513                                         target = topic.getGlobalMrURL();
 514                                         break;
 515
 516                                 case REPLICATION_GLOBAL_TO_FQDN:
 517                                 case REPLICATION_GLOBAL_TO_FQDN_TO_EDGE:  // NOTE: this is for G2F portion only
 518                                         source = topic.getGlobalMrURL();
 519                                         target = groupCentralCluster.getFqdn();
 520                                         break;
 521
 522                                 case REPLICATION_FQDN_TO_EDGE:
 523                                 case REPLICATION_EDGE_TO_FQDN:
 524                                 case REPLICATION_EDGE_TO_CENTRAL:
 525                                 case REPLICATION_CENTRAL_TO_EDGE:
 526                                         break;
 527                                 default:
 528                                         logger.error( "Unexpected value for ReplicationType ("+ topic.getReplicationCase() + ") for topic " + topic.getFqtn() );
 529                                         anythingWrong = true;
 530                                         err.setCode(400);
 531                                         err.setFields("topic=" + topic.genFqtn() + " replicationCase="
 532                                                         + topic.getReplicationCase() );
 533                                         err.setMessage("Unexpected value for ReplicationType");
 534                                         continue;
 535                                 }
 536                         } else {
 537                                 logger.warn( "dcaeLocation " + loc + " is neither Edge nor Central so no mmagent provisioning was done");
 538                                 anythingWrong = true;
 539                                 continue;
 540                         }
 541                         if ( source != null && target != null ) {
 542                                 try {
 543                                         logger.info( "Create a MM from " + source + " to " + target );
 544                                         MirrorMaker mm = bridge.getNextMM( source, target, topic.getFqtn());
 545                                         mm.addTopic(topic.getFqtn());
 546                                         bridge.updateMirrorMaker(mm);
 547                                 } catch ( Exception ex ) {
 548                                         err.setCode(500);
 549                                         err.setFields( "mirror_maker.topic");
 550                                         err.setMessage("Unexpected condition: " + ex );
 551                                         anythingWrong = true;
 552                                         break;
 553                                 }
 554                         }
 555
 556
 557                 }
 558                 return  anythingWrong;
 559
 560         }
 561
 562
 563         /*
 564          * Prior to 1707, we only supported EDGE_TO_CENTRAL replication.
 565          * This was determined automatically based on presence of edge publishers and central subscribers.
 566          * The following method is a modification of that original logic, to preserve some backwards compatibility,
 567          * i.e. to be used when no ReplicationType is specified.
 568          */
 569         public ReplicationType reviewTopic( Topic topic ) {
 570
 571
 572                 if ( topic.getNumClients() > 1 ) {
 573                         Graph graph = new Graph( topic.getClients(), false );
 574
 575                         String centralFqdn = new String();
 576                         if ( graph.hasCentral() ) {
 577                                 DmaapConfig p = (DmaapConfig)DmaapConfig.getConfig();
 578                                 centralFqdn = p.getProperty("MR.CentralCname");
 579                         }
 580
 581                         Collection<String> locations = graph.getKeys();
 582                         for( String loc : locations ) {
 583                                 logger.info( "loc=" + loc );
 584                                 MR_Cluster cluster = clusters.getMr_ClusterByLoc(loc);
 585                                 if ( cluster == null ) {
 586                                         logger.info( "No MR cluster for location " + loc );
 587                                         continue;
 588                                 }
 589                                 if ( graph.hasCentral() &&  ! graph.getCentralLoc().equals(cluster.getDcaeLocationName())) {
 590                                         logger.info( "Detected case for EDGE_TO_CENTRAL from " + cluster.getFqdn() + " to " + centralFqdn );
 591                                         return ReplicationType.REPLICATION_EDGE_TO_CENTRAL;
 592
 593                                 }
 594
 595                         }
 596                 }
 597
 598                 return ReplicationType.REPLICATION_NONE;
 599         }
 600
 601 }