appc-dg/appc-dg-shared/appc-dg-dependency-model/src/main/java/org/onap/appc/dg/flowbuilder/impl/AbstractFlowStrategy.java

   1 /*-
   2  * ============LICENSE_START=======================================================
   3  * ONAP : APPC
   4  * ================================================================================
   5  * Copyright (C) 2017-2018 AT&T Intellectual Property. All rights reserved.
   6  * ================================================================================
   7  * Copyright (C) 2017 Amdocs
   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  *
  21  * ============LICENSE_END=========================================================
  22  */
  23
  24 package org.onap.appc.dg.flowbuilder.impl;
  25
  26 import com.att.eelf.configuration.EELFLogger;
  27 import com.att.eelf.configuration.EELFManager;
  28
  29 import java.util.Iterator;
  30 import java.util.List;
  31 import java.util.Set;
  32
  33 import org.onap.appc.dg.flowbuilder.FlowStrategy;
  34 import org.onap.appc.dg.flowbuilder.exception.InvalidDependencyModelException;
  35 import org.onap.appc.dg.flowbuilder.helper.Graph;
  36 import org.onap.appc.dg.objects.*;
  37 import org.onap.appc.domainmodel.Vnfc;
  38
  39
  40 public abstract class AbstractFlowStrategy implements FlowStrategy {
  41
  42     private final EELFLogger logger = EELFManager.getInstance().getLogger(AbstractFlowStrategy.class);
  43
  44     Graph<Vnfc> graph;
  45
  46     public VnfcFlowModel buildFlowModel(VnfcDependencyModel dependencyModel, InventoryModel inventoryModel) throws InvalidDependencyModelException {
  47         if(logger.isTraceEnabled()){
  48             logger.trace("Entering into buildFlowModel with dependency model = " + dependencyModel
  49                     + "inventory model = " +inventoryModel);
  50         }
  51
  52         if(dependencyModel == null
  53                 || dependencyModel.getDependencies() ==null
  54                 || dependencyModel.getDependencies().size() ==0){
  55             logger.debug("Dependency model not available, building flow model with sequence");
  56             throw new InvalidDependencyModelException("Dependency model either null or does not contain any dependency");
  57         }
  58
  59         VnfcFlowModel flowModel = buildFlowModel(dependencyModel);
  60         if(logger.isDebugEnabled()){
  61             logger.debug("Flow Model without instance data: \n" + flowModel);
  62         }
  63
  64         logger.info("Populating flow model with A&AI data");
  65         populateFlowModel(flowModel,inventoryModel);
  66         if(logger.isDebugEnabled()){
  67             logger.debug("Flow Model with instance data: \n" + flowModel);
  68         }
  69
  70         return flowModel;
  71     }
  72
  73     private void populateFlowModel(VnfcFlowModel flowModel, InventoryModel inventoryModel) {
  74         Iterator<List<Vnfc>> flowIterator;
  75
  76         for(Vnfc vnfcFromInventory:inventoryModel.getVnf().getVnfcs()){
  77             flowIterator = flowModel.getModelIterator();
  78             String vnfcType = vnfcFromInventory.getVnfcType();
  79             while (flowIterator.hasNext()){
  80                 for(Vnfc vnfcFromFlowModel:flowIterator.next() ){
  81                     if(vnfcType.equalsIgnoreCase(vnfcFromFlowModel.getVnfcType())){
  82                         vnfcFromFlowModel.setVnfcName(vnfcFromInventory.getVnfcName());
  83                         vnfcFromFlowModel.setVserverList(vnfcFromInventory.getVserverList());
  84                     }
  85                 }
  86             }
  87
  88         }
  89
  90     }
  91
  92     @SuppressWarnings("unchecked")
  93     private VnfcFlowModel buildFlowModel(VnfcDependencyModel dependencyModel) throws InvalidDependencyModelException {
  94         Set<Node<Vnfc>> dependencies = dependencyModel.getDependencies();
  95         graph = new Graph(dependencies.size());
  96
  97         for(Node<Vnfc> node:dependencies){
  98             graph.addVertex(node.getChild());
  99         }
 100
 101         for(Node node:dependencies){
 102             Vnfc child = (Vnfc)node.getChild();
 103             List<Vnfc> parents = node.getParents();
 104             for(Vnfc parent:parents){
 105                 graph.addEdge(child,parent);
 106             }
 107         }
 108         List<List<Vnfc>> dependencyList = orderDependencies();
 109
 110         VnfcFlowModel.VnfcFlowModelBuilder builder = new VnfcFlowModel.VnfcFlowModelBuilder();
 111         int count=0;
 112         int flowModelSize = 0;
 113         for(List<Vnfc> vnfcList:dependencyList){
 114             builder.addMetadata(count,vnfcList);
 115             flowModelSize += vnfcList.size();
 116             count++;
 117         }
 118         if(flowModelSize != dependencies.size()){
 119             throw new InvalidDependencyModelException("Cyclic dependency detected between the VNFC's");
 120         }
 121
 122         return builder.build();
 123     }
 124
 125     protected abstract List<List<Vnfc>> orderDependencies() throws InvalidDependencyModelException;
 126 }