appc-dg/appc-dg-shared/appc-dg-dependency-model/src/main/java/org/openecomp/appc/dg/dependencymanager/helper/DependencyModelParser.java

   1 /*-
   2  * ============LICENSE_START=======================================================
   3  * APPC
   4  * ================================================================================
   5  * Copyright (C) 2017 AT&T Intellectual Property. All rights reserved.
   6  * Copyright (C) 2017 Amdocs
   7  * ================================================================================
   8  * Licensed under the Apache License, Version 2.0 (the "License");
   9  * you may not use this file except in compliance with the License.
  10  * You may obtain a copy of the License at
  11  *
  12  *      http://www.apache.org/licenses/LICENSE-2.0
  13  *
  14  * Unless required by applicable law or agreed to in writing, software
  15  * distributed under the License is distributed on an "AS IS" BASIS,
  16  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  17  * See the License for the specific language governing permissions and
  18  * limitations under the License.
  19  * ============LICENSE_END=========================================================
  20  * ECOMP is a trademark and service mark of AT&T Intellectual Property.
  21  */
  22
  23 package org.openecomp.appc.dg.dependencymanager.helper;
  24
  25 import com.att.eelf.configuration.EELFLogger;
  26 import com.att.eelf.configuration.EELFManager;
  27 import com.fasterxml.jackson.databind.JsonNode;
  28 import com.fasterxml.jackson.databind.ObjectMapper;
  29 import com.fasterxml.jackson.databind.node.ObjectNode;
  30 import com.fasterxml.jackson.dataformat.yaml.YAMLFactory;
  31 import org.apache.commons.lang3.StringUtils;
  32 import org.openecomp.appc.dg.flowbuilder.exception.InvalidDependencyModel;
  33 import org.openecomp.appc.dg.objects.Node;
  34 import org.openecomp.appc.dg.objects.VnfcDependencyModel;
  35 import org.openecomp.appc.domainmodel.Vnfc;
  36
  37 import java.io.IOException;
  38 import java.util.*;
  39
  40
  41 public class DependencyModelParser {
  42
  43     private static final EELFLogger logger = EELFManager.getInstance().getLogger(DependencyModelParser.class);
  44     private static Map<String, String> dependencyMap;
  45     private static final String PROPERTIES = "properties";
  46     private static final String ACTIVE_ACTIVE = "Active-Active";
  47     private static final String ACTIVE_PASSIVE = "Active-Passive";
  48     private static final String HIGH_AVAILABLITY = "high_availablity";
  49     private static final String MANDATORY = "mandatory";
  50     private static final String TOPOLOGY_TEMPLATE = "topology_template";
  51
  52     static {
  53         Map<String, String> dependencyTypeMappingMap =new HashMap<>();
  54         dependencyTypeMappingMap.put("geo-activeactive", ACTIVE_ACTIVE);
  55         dependencyTypeMappingMap.put("geo-activestandby", ACTIVE_PASSIVE);
  56         dependencyTypeMappingMap.put("local-activeactive", ACTIVE_ACTIVE);
  57         dependencyTypeMappingMap.put("local-activestandby", ACTIVE_PASSIVE);
  58         dependencyMap = Collections.unmodifiableMap(dependencyTypeMappingMap);
  59     }
  60
  61     public VnfcDependencyModel generateDependencyModel(String vnfModel,String vnfType) {
  62         Set<Node<Vnfc>> dependencies = new HashSet<>();
  63         ObjectMapper mapper = new ObjectMapper(new YAMLFactory());
  64         boolean mandatory;
  65         String resilienceType;
  66         String prefix = "org.openecomp.resource.vfc."+vnfType+".abstract.nodes.";
  67         try {
  68             ObjectNode root = (ObjectNode) mapper.readTree(vnfModel);
  69             logger.debug("VNF Model after parsing: " + root);
  70
  71             if(root.get(TOPOLOGY_TEMPLATE) == null || root.get(TOPOLOGY_TEMPLATE).get("node_templates") == null) {
  72                 throw new InvalidDependencyModel("Dependency model is missing 'topology_template' or  'node_templates' elements");
  73             }
  74
  75             JsonNode topologyTemplateNode = root.get(TOPOLOGY_TEMPLATE);
  76             JsonNode nodeTemplateNode = topologyTemplateNode.get("node_templates");
  77             Iterator<Map.Entry<String, JsonNode>> itretor  = nodeTemplateNode.fields();
  78             for (JsonNode yamlNode : nodeTemplateNode) {
  79                 logger.debug("Processing node: " + yamlNode);
  80                 String vnfcType = itretor.next().getKey();
  81                 String type = yamlNode.get("type").textValue();
  82                 type = type.substring(0,type.lastIndexOf(".")+1);
  83                 if(type.concat(vnfcType).toLowerCase().startsWith(prefix.concat(vnfcType).toLowerCase())) {
  84
  85                     if(yamlNode.get(PROPERTIES).findValue(HIGH_AVAILABLITY) == null || yamlNode.get(PROPERTIES).findValue(HIGH_AVAILABLITY).asText().isEmpty()) {
  86                         resilienceType = ACTIVE_ACTIVE;
  87                     }else {
  88                         resilienceType = dependencyMap.get(yamlNode.get(PROPERTIES).findValue(HIGH_AVAILABLITY).textValue());
  89                     }
  90
  91                     if(yamlNode.get(PROPERTIES).findValue(MANDATORY) == null || yamlNode.get(PROPERTIES).findValue(MANDATORY).asText().isEmpty()) {
  92                         mandatory = false;
  93                     }else {
  94                         mandatory = yamlNode.get(PROPERTIES).findValue(MANDATORY).booleanValue();
  95                     }
  96                     String[] parentList = getDependencyArray(yamlNode);
  97                     Node<Vnfc> vnfcNode = getNode(dependencies, vnfcType);
  98                     if (vnfcNode != null) {
  99                         logger.debug("Dependency node already exists for vnfc Type: " + vnfcType);
 100                         if (StringUtils.isEmpty(vnfcNode.getChild().getResilienceType())) {
 101                             logger.debug("Updating resilience type, dependencies and mandatory attribute for VNFC type: " + vnfcType);
 102                             vnfcNode.getChild().setResilienceType(resilienceType);
 103                             if (parentList != null && parentList.length > 0) {
 104                                 addDependencies(dependencies, vnfcNode, parentList);
 105                             }
 106                             vnfcNode.getChild().setMandatory(mandatory);
 107                         }
 108
 109                     } else {
 110                         logger.debug("Creating dependency node for  : " + vnfcType);
 111                         vnfcNode = new Node<>(new Vnfc(vnfcType, resilienceType, null, mandatory));
 112                         if (parentList != null && parentList.length > 0)
 113                             addDependencies(dependencies, vnfcNode, parentList);
 114                         logger.debug("Adding VNFC to dependency model : " + vnfcNode);
 115                         dependencies.add(vnfcNode);
 116                     }
 117                 }
 118             }
 119         } catch (IOException e) {
 120             logger.error("Error parsing dependency model : " + vnfModel);
 121             logger.error("Error message : " + e);
 122             throw new InvalidDependencyModel("Error parsing dependency model. " + e.getMessage());
 123         }
 124         return new VnfcDependencyModel(dependencies);
 125     }
 126
 127     private void addDependencies(Set<Node<Vnfc>> nodes, Node node, String[] parentList) {
 128         for (String type : parentList) {
 129             String parentType = getVnfcType(type);
 130             Node<Vnfc> parentNode = getNode(nodes, parentType);
 131             if (parentNode != null) {
 132                 logger.debug("VNFC already exists for VNFC type: " + parentType + ". Adding it to parent list ");
 133                 node.addParent(parentNode.getChild());
 134             } else {
 135                 logger.debug("VNFC does not exist for VNFC type: " + parentType + ". Creating new VNFC ");
 136                 parentNode = new Node<>(new Vnfc(parentType, null));
 137                 node.addParent(parentNode.getChild());
 138                 logger.debug("Adding VNFC to dependency model : " + parentNode);
 139                 nodes.add(parentNode);
 140             }
 141         }
 142     }
 143
 144     private String[] getDependencyArray(JsonNode node) {
 145         JsonNode requirementsNode = node.get("requirements");
 146         List<String> dependencyList  = new ArrayList();
 147         if(requirementsNode!=null) {
 148             for (JsonNode internalNode : requirementsNode) {
 149                 if (nodeNullCheck(internalNode) &&"tosca.capabilities.Node".equalsIgnoreCase(internalNode.get("capability").asText())
 150                         && "tosca.relationships.DependsOn".equalsIgnoreCase(internalNode.get("relationship").asText())) {
 151                     if(internalNode.get("node") != null) {
 152                         dependencyList.add(internalNode.get("node").asText());
 153                     }else{
 154                         throw new InvalidDependencyModel("Error parsing dependency model. " + "Dependent Node not found for "+ node.get("type"));
 155                     }
 156                 }
 157             }
 158             return  dependencyList.toArray(new String[0]);
 159         }else{
 160             return new String[0];
 161         }
 162     }
 163
 164     private boolean nodeNullCheck(JsonNode internalNode) {
 165         return internalNode.get("dependency") != null && internalNode.get("capability") != null && internalNode.get("relationship") != null;
 166     }
 167
 168     private Node<Vnfc> getNode(Set<Node<Vnfc>> nodes, String vnfcType) {
 169         Iterator itr = nodes.iterator();
 170         Node<Vnfc> node;
 171         while (itr.hasNext()) {
 172             node = (Node<Vnfc>) itr.next();
 173             if (node.getChild().getVnfcType().equalsIgnoreCase(vnfcType)) {
 174                 return node;
 175             }
 176         }
 177         return null;
 178     }
 179
 180     private String getVnfcType(String type) {
 181         return type.substring(type.lastIndexOf('.') + 1, type.length());
 182     }
 183
 184 }