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

   1 package org.openecomp.sdc.be.components.merge;
   2
   3 import org.openecomp.sdc.be.model.ComponentInstance;
   4 import org.openecomp.sdc.be.model.RelationshipInfo;
   5 import org.openecomp.sdc.be.model.RequirementCapabilityRelDef;
   6 import org.openecomp.sdc.be.model.Resource;
   7 import org.springframework.stereotype.Component;
   8
   9 import java.util.List;
  10 import java.util.Map;
  11 import java.util.Optional;
  12
  13 @Component
  14 public class RelationsComparator {
  15
  16     /**
  17      *
  18      * @param oldResource the old resource
  19      * @param newResource the new resource
  20      * @return true if there was a change in one of the relations between the old and new resource
  21      * a change in relation is determine by comparing the relations type, node, capability and requirement name
  22      */
  23     public boolean isRelationsChanged(Resource oldResource,  Resource newResource) {
  24         Map<String, List<RequirementCapabilityRelDef>> oldRelationsByInstance = oldResource.groupRelationsByInstanceName(oldResource);
  25         Map<String, List<RequirementCapabilityRelDef>> newRelationsByInstance = newResource.groupRelationsByInstanceName(newResource);
  26         for (Map.Entry<String, List<RequirementCapabilityRelDef>> relationByInst : newRelationsByInstance.entrySet()) {
  27             List<RequirementCapabilityRelDef> oldRelations = oldRelationsByInstance.get(relationByInst.getKey());
  28             List<RequirementCapabilityRelDef> newRelations = relationByInst.getValue();
  29             if (isInstanceRelationsChanged(oldResource, oldRelations, newResource, newRelations)) {
  30                 return true;
  31             }
  32         }
  33         return false;
  34
  35     }
  36
  37     private boolean isInstanceRelationsChanged(Resource oldResource, List<RequirementCapabilityRelDef> oldRelations, Resource newResource, List<RequirementCapabilityRelDef> newRelations) {
  38         if (oldRelations == null || oldRelations.size() != newRelations.size()){
  39             return true;
  40         }
  41         return newRelations.stream().anyMatch(newRelation -> !findRelation(oldResource, oldRelations, newResource, newRelation));
  42     }
  43
  44
  45
  46     private boolean findRelation(Resource oldResource, List<RequirementCapabilityRelDef> oldRelations, Resource newResource, RequirementCapabilityRelDef newRelation) {
  47         for (RequirementCapabilityRelDef oldRelation : oldRelations) {
  48             RelationshipInfo oldRelationship = oldRelation.resolveSingleRelationship().getRelation();
  49             RelationshipInfo newRelationship = newRelation.resolveSingleRelationship().getRelation();
  50             if (oldRelationship != null && newRelationship != null && isRelationEqual(oldRelationship, newRelationship) && isRelationToNodeEquals(oldResource, oldRelation, newResource, newRelation)) {
  51                 return true;
  52             }
  53         }
  54         return false;
  55     }
  56
  57     private boolean isRelationToNodeEquals(Resource oldResource, RequirementCapabilityRelDef oldRelation, Resource newResource, RequirementCapabilityRelDef newRelation) {
  58         String oldToNodeId = oldRelation.getToNode();
  59         String newToNodeId = newRelation.getToNode();
  60         Optional<ComponentInstance> oldRelationToNode = oldResource.getComponentInstanceById(oldToNodeId);
  61         Optional<ComponentInstance> newRelationToNode = newResource.getComponentInstanceById(newToNodeId);
  62         return oldRelationToNode.isPresent() && newRelationToNode.isPresent() && oldRelationToNode.get().getName().equals(newRelationToNode.get().getName());
  63     }
  64
  65     private boolean isRelationEqual(RelationshipInfo oldRelationship, RelationshipInfo newRelationship) {
  66         return isRelationshipTypeEquals(oldRelationship, newRelationship) &&
  67                isRelationshipCapabilityEquals(oldRelationship, newRelationship) &&
  68                isRelationshipReqNameEquals(oldRelationship, newRelationship);
  69     }
  70
  71     private boolean isRelationshipCapabilityEquals(RelationshipInfo oldRelationship, RelationshipInfo newRelationship) {
  72         if(oldRelationship.getCapabilityUid() !=null && newRelationship.getCapabilityUid() != null){
  73             return oldRelationship.getCapabilityUid().equals(newRelationship.getCapabilityUid());
  74         }
  75         else if(oldRelationship.getCapabilityUid() == null && newRelationship.getCapabilityUid() == null){
  76             return true;
  77         }
  78         return false;
  79     }
  80
  81     private boolean isRelationshipTypeEquals(RelationshipInfo oldRelationship, RelationshipInfo newRelationship) {
  82         return oldRelationship.getRelationship().getType().equals(newRelationship.getRelationship().getType());
  83     }
  84
  85     private boolean isRelationshipReqNameEquals(RelationshipInfo oldRelationship, RelationshipInfo newRelationship) {
  86         if(oldRelationship.getRequirement() != null && newRelationship.getRequirement() != null){
  87             return oldRelationship.getRequirement().equals(newRelationship.getRequirement());
  88         }
  89         else if(oldRelationship.getRequirement() == null && newRelationship.getRequirement() == null){
  90             return true;
  91         }
  92         return false;
  93     }
  94
  95 }