catalog-be/src/main/java/org/openecomp/sdc/be/components/merge/RelationsComparator.java

   1 /*-
   2  * ============LICENSE_START=======================================================
   3  * SDC
   4  * ================================================================================
   5  * Copyright (C) 2019 AT&T Intellectual Property. All rights reserved.
   6  * ================================================================================
   7  * Licensed under the Apache License, Version 2.0 (the "License");
   8  * you may not use this file except in compliance with the License.
   9  * You may obtain a copy of the License at
  10  *
  11  *      http://www.apache.org/licenses/LICENSE-2.0
  12  *
  13  * Unless required by applicable law or agreed to in writing, software
  14  * distributed under the License is distributed on an "AS IS" BASIS,
  15  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  16  * See the License for the specific language governing permissions and
  17  * limitations under the License.
  18  * ============LICENSE_END=========================================================
  19  */
  20
  21 package org.openecomp.sdc.be.components.merge;
  22
  23 import org.openecomp.sdc.be.model.ComponentInstance;
  24 import org.openecomp.sdc.be.model.RelationshipInfo;
  25 import org.openecomp.sdc.be.model.RequirementCapabilityRelDef;
  26 import org.openecomp.sdc.be.model.Resource;
  27 import org.springframework.stereotype.Component;
  28
  29 import java.util.List;
  30 import java.util.Map;
  31 import java.util.Optional;
  32
  33 @Component
  34 public class RelationsComparator {
  35
  36     /**
  37      *
  38      * @param oldResource the old resource
  39      * @param newResource the new resource
  40      * @return true if there was a change in one of the relations between the old and new resource
  41      * a change in relation is determine by comparing the relations type, node, capability and requirement name
  42      */
  43     public boolean isRelationsChanged(Resource oldResource,  Resource newResource) {
  44         Map<String, List<RequirementCapabilityRelDef>> oldRelationsByInstance = oldResource.groupRelationsFromCsarByInstanceName(oldResource);
  45         Map<String, List<RequirementCapabilityRelDef>> newRelationsByInstance = newResource.groupRelationsFromCsarByInstanceName(newResource);
  46         for (Map.Entry<String, List<RequirementCapabilityRelDef>> relationByInst : newRelationsByInstance.entrySet()) {
  47             List<RequirementCapabilityRelDef> oldRelations = oldRelationsByInstance.get(relationByInst.getKey());
  48             List<RequirementCapabilityRelDef> newRelations = relationByInst.getValue();
  49             if (isInstanceRelationsChanged(oldResource, oldRelations, newResource, newRelations)) {
  50                 return true;
  51             }
  52         }
  53         return false;
  54
  55     }
  56
  57     private boolean isInstanceRelationsChanged(Resource oldResource, List<RequirementCapabilityRelDef> oldRelations, Resource newResource, List<RequirementCapabilityRelDef> newRelations) {
  58         if (oldRelations == null || oldRelations.size() != newRelations.size()){
  59             return true;
  60         }
  61         return newRelations.stream().anyMatch(newRelation -> !findRelation(oldResource, oldRelations, newResource, newRelation));
  62     }
  63
  64
  65
  66     private boolean findRelation(Resource oldResource, List<RequirementCapabilityRelDef> oldRelations, Resource newResource, RequirementCapabilityRelDef newRelation) {
  67         for (RequirementCapabilityRelDef oldRelation : oldRelations) {
  68             RelationshipInfo oldRelationship = oldRelation.resolveSingleRelationship().getRelation();
  69             RelationshipInfo newRelationship = newRelation.resolveSingleRelationship().getRelation();
  70             if (oldRelationship != null && newRelationship != null && isRelationEqual(oldRelationship, newRelationship) && isRelationToNodeEquals(oldResource, oldRelation, newResource, newRelation)) {
  71                 return true;
  72             }
  73         }
  74         return false;
  75     }
  76
  77     private boolean isRelationToNodeEquals(Resource oldResource, RequirementCapabilityRelDef oldRelation, Resource newResource, RequirementCapabilityRelDef newRelation) {
  78         String oldToNodeId = oldRelation.getToNode();
  79         String newToNodeId = newRelation.getToNode();
  80         Optional<ComponentInstance> oldRelationToNode = oldResource.getComponentInstanceById(oldToNodeId);
  81         Optional<ComponentInstance> newRelationToNode = newResource.getComponentInstanceById(newToNodeId);
  82         return oldRelationToNode.isPresent() && newRelationToNode.isPresent() && oldRelationToNode.get().getInvariantName().equals(newRelationToNode.get().getInvariantName());
  83     }
  84
  85     private boolean isRelationEqual(RelationshipInfo oldRelationship, RelationshipInfo newRelationship) {
  86         return isRelationshipTypeEquals(oldRelationship, newRelationship) &&
  87                isRelationshipCapabilityEquals(oldRelationship, newRelationship) &&
  88                isRelationshipReqNameEquals(oldRelationship, newRelationship);
  89     }
  90
  91     private boolean isRelationshipCapabilityEquals(RelationshipInfo oldRelationship, RelationshipInfo newRelationship) {
  92         if(oldRelationship.getCapabilityUid() !=null && newRelationship.getCapabilityUid() != null){
  93             return oldRelationship.getCapabilityUid().equals(newRelationship.getCapabilityUid());
  94         }
  95         else if(oldRelationship.getCapabilityUid() == null && newRelationship.getCapabilityUid() == null){
  96             return true;
  97         }
  98         return false;
  99     }
 100
 101     private boolean isRelationshipTypeEquals(RelationshipInfo oldRelationship, RelationshipInfo newRelationship) {
 102         return oldRelationship.getRelationship().getType().equals(newRelationship.getRelationship().getType());
 103     }
 104
 105     private boolean isRelationshipReqNameEquals(RelationshipInfo oldRelationship, RelationshipInfo newRelationship) {
 106         if(oldRelationship.getRequirement() != null && newRelationship.getRequirement() != null){
 107             return oldRelationship.getRequirement().equals(newRelationship.getRequirement());
 108         }
 109         else if(oldRelationship.getRequirement() == null && newRelationship.getRequirement() == null){
 110             return true;
 111         }
 112         return false;
 113     }
 114
 115 }