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 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  * ECOMP is a trademark and service mark of AT&T Intellectual Property.
  22  * ============LICENSE_END=========================================================
  23  */
  24
  25 package org.onap.appc.dg.flowbuilder.impl;
  26
  27 import com.att.eelf.configuration.EELFLogger;
  28 import com.att.eelf.configuration.EELFManager;
  29
  30 import java.util.Iterator;
  31 import java.util.List;
  32 import java.util.Set;
  33
  34 import org.onap.appc.dg.flowbuilder.FlowStrategy;
  35 import org.onap.appc.dg.flowbuilder.exception.InvalidDependencyModelException;
  36 import org.onap.appc.dg.flowbuilder.helper.Graph;
  37 import org.onap.appc.dg.objects.*;
  38 import org.onap.appc.domainmodel.Vnfc;
  39
  40
  41 public abstract class AbstractFlowStrategy implements FlowStrategy {
  42
  43     private final EELFLogger logger = EELFManager.getInstance().getLogger(AbstractFlowStrategy.class);
  44
  45     Graph<Vnfc> graph;
  46
  47     public VnfcFlowModel buildFlowModel(VnfcDependencyModel dependencyModel, InventoryModel inventoryModel) throws InvalidDependencyModelException {
  48         if(logger.isTraceEnabled()){
  49             logger.trace("Entering into buildFlowModel with dependency model = " + dependencyModel
  50                     + "inventory model = " +inventoryModel);
  51         }
  52
  53         if(dependencyModel == null
  54                 || dependencyModel.getDependencies() ==null
  55                 || dependencyModel.getDependencies().size() ==0){
  56             logger.debug("Dependency model not available, building flow model with sequence");
  57             throw new InvalidDependencyModelException("Dependency model either null or does not contain any dependency");
  58         }
  59
  60         VnfcFlowModel flowModel = buildFlowModel(dependencyModel);
  61         if(logger.isDebugEnabled()){
  62             logger.debug("Flow Model without instance data: \n" + flowModel);
  63         }
  64
  65         logger.info("Populating flow model with A&AI data");
  66         populateFlowModel(flowModel,inventoryModel);
  67         if(logger.isDebugEnabled()){
  68             logger.debug("Flow Model with instance data: \n" + flowModel);
  69         }
  70
  71         return flowModel;
  72     }
  73
  74     private void populateFlowModel(VnfcFlowModel flowModel, InventoryModel inventoryModel) {
  75         Iterator<List<Vnfc>> flowIterator;
  76
  77         for(Vnfc vnfcFromInventory:inventoryModel.getVnf().getVnfcs()){
  78             flowIterator = flowModel.getModelIterator();
  79             String vnfcType = vnfcFromInventory.getVnfcType();
  80             while (flowIterator.hasNext()){
  81                 for(Vnfc vnfcFromFlowModel:flowIterator.next() ){
  82                     if(vnfcType.equalsIgnoreCase(vnfcFromFlowModel.getVnfcType())){
  83                         vnfcFromFlowModel.setVnfcName(vnfcFromInventory.getVnfcName());
  84                         vnfcFromFlowModel.setVserverList(vnfcFromInventory.getVserverList());
  85                     }
  86                 }
  87             }
  88
  89         }
  90
  91     }
  92
  93     @SuppressWarnings("unchecked")
  94     private VnfcFlowModel buildFlowModel(VnfcDependencyModel dependencyModel) throws InvalidDependencyModelException {
  95         Set<Node<Vnfc>> dependencies = dependencyModel.getDependencies();
  96         graph = new Graph(dependencies.size());
  97
  98         for(Node<Vnfc> node:dependencies){
  99             graph.addVertex(node.getChild());
 100         }
 101
 102         for(Node node:dependencies){
 103             Vnfc child = (Vnfc)node.getChild();
 104             List<Vnfc> parents = node.getParents();
 105             for(Vnfc parent:parents){
 106                 graph.addEdge(child,parent);
 107             }
 108         }
 109         List<List<Vnfc>> dependencyList = orderDependencies();
 110
 111         VnfcFlowModel.VnfcFlowModelBuilder builder = new VnfcFlowModel.VnfcFlowModelBuilder();
 112         int count=0;
 113         int flowModelSize = 0;
 114         for(List<Vnfc> vnfcList:dependencyList){
 115             builder.addMetadata(count,vnfcList);
 116             flowModelSize += vnfcList.size();
 117             count++;
 118         }
 119         if(flowModelSize != dependencies.size()){
 120             throw new InvalidDependencyModelException("Cyclic dependency detected between the VNFC's");
 121         }
 122
 123         return builder.build();
 124     }
 125
 126     protected abstract List<List<Vnfc>> orderDependencies() throws InvalidDependencyModelException;
 127 }