2 * ============LICENSE_START=======================================================
4 * ================================================================================
5 * Copyright (C) 2017-2019 AT&T Intellectual Property. All rights reserved.
6 * ================================================================================
7 * Copyright (C) 2017 Amdocs
8 * ================================================================================
9 * Modifications (C) 2019 Ericsson
10 * =============================================================================
11 * Licensed under the Apache License, Version 2.0 (the "License");
12 * you may not use this file except in compliance with the License.
13 * You may obtain a copy of the License at
15 * http://www.apache.org/licenses/LICENSE-2.0
17 * Unless required by applicable law or agreed to in writing, software
18 * distributed under the License is distributed on an "AS IS" BASIS,
19 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
20 * See the License for the specific language governing permissions and
21 * limitations under the License.
22 * ============LICENSE_END=========================================================
25 package org.onap.appc.dg.dependencymanager.helper;
27 import com.att.eelf.configuration.EELFLogger;
28 import com.att.eelf.configuration.EELFManager;
29 import com.fasterxml.jackson.databind.JsonNode;
30 import com.fasterxml.jackson.databind.ObjectMapper;
31 import com.fasterxml.jackson.databind.node.ObjectNode;
32 import com.fasterxml.jackson.dataformat.yaml.YAMLFactory;
33 import java.io.IOException;
34 import java.util.Collections;
35 import java.util.HashMap;
36 import java.util.HashSet;
37 import java.util.Iterator;
40 import org.apache.commons.lang3.StringUtils;
41 import org.onap.appc.dg.flowbuilder.exception.InvalidDependencyModelException;
42 import org.onap.appc.dg.objects.Node;
43 import org.onap.appc.dg.objects.VnfcDependencyModel;
44 import org.onap.appc.domainmodel.Vnfc;
46 public class DependencyModelParser {
48 private final EELFLogger logger = EELFManager.getInstance().getLogger(DependencyModelParser.class);
50 private static final String PROPERTIES = "properties";
51 private static final String ACTIVE_ACTIVE = "Active-Active";
52 private static final String ACTIVE_PASSIVE = "Active-Passive";
53 private static final String HIGH_AVAILABLITY = "high_availablity"; // Deprecated original spelling
54 private static final String HIGH_AVAILABILITY = "high_availability";
55 private static final String MANDATORY = "mandatory";
56 private static final String TOPOLOGY_TEMPLATE = "topology_template";
57 private static final String RELATIONSHIP = "relationship";
59 private static Map<String, String> dependencyMap;
62 Map<String, String> dependencyTypeMappingMap = new HashMap<>();
63 dependencyTypeMappingMap.put("geo-activeactive", ACTIVE_ACTIVE);
64 dependencyTypeMappingMap.put("geo-activestandby", ACTIVE_PASSIVE);
65 dependencyTypeMappingMap.put("local-activeactive", ACTIVE_ACTIVE);
66 dependencyTypeMappingMap.put("local-activestandby", ACTIVE_PASSIVE);
67 dependencyMap = Collections.unmodifiableMap(dependencyTypeMappingMap);
70 public VnfcDependencyModel generateDependencyModel(String vnfModel, String vnfType)
71 throws InvalidDependencyModelException {
72 Set<Node<Vnfc>> dependencies = new HashSet<>();
73 ObjectMapper mapper = getMapper();
75 String resilienceType;
76 String prefix = "org.onap.resource.vfc." + vnfType + ".abstract.nodes.";
78 ObjectNode root = (ObjectNode) mapper.readTree(vnfModel);
80 JsonNode topologyTemplateNode = root.get(TOPOLOGY_TEMPLATE);
81 JsonNode nodeTemplateNode;
83 if (topologyTemplateNode == null
84 || (nodeTemplateNode = topologyTemplateNode.get("node_templates")) == null) {
85 throw new InvalidDependencyModelException(
86 "Dependency model is missing 'topology_template' or 'node_templates' elements");
89 Iterator<Map.Entry<String, JsonNode>> iterator = nodeTemplateNode.fields();
90 for (JsonNode yamlNode : nodeTemplateNode) {
91 logger.debug("Processing node: " + yamlNode);
92 String fullvnfcType = iterator.next().getValue().get("type").textValue();
93 String vnfcType = getQualifiedVnfcType(fullvnfcType);
94 String type = yamlNode.get("type").textValue();
95 type = type.substring(0, type.lastIndexOf('.') + 1);
96 if (type.toLowerCase().startsWith(prefix.toLowerCase())) {
98 resilienceType = resolveResilienceType(yamlNode);
99 mandatory = resolveMandatory(yamlNode);
100 String[] parentList = getDependencyArray(yamlNode, nodeTemplateNode);
101 Node<Vnfc> vnfcNode = getNode(dependencies, vnfcType);
102 if (vnfcNode != null) {
103 //This code appears to be unreachable
104 logger.debug("Dependency node already exists for vnfc Type: " + vnfcType);
105 if (StringUtils.isEmpty(vnfcNode.getChild().getResilienceType())) {
106 logger.debug("Updating resilience type, "
107 + "dependencies and mandatory attribute for VNFC type: " + vnfcType);
108 vnfcNode.getChild().setResilienceType(resilienceType);
109 tryFillNode(dependencies, parentList, vnfcNode);
110 vnfcNode.getChild().setMandatory(mandatory);
113 logger.debug("Creating dependency node for: " + vnfcType);
114 vnfcNode = new Node<>(createVnfc(mandatory, resilienceType, vnfcType));
115 tryFillNode(dependencies, parentList, vnfcNode);
116 logger.debug("Adding VNFC to dependency model: " + vnfcNode);
117 dependencies.add(vnfcNode);
121 } catch (IOException e) {
122 logger.error("Error parsing dependency model: " + vnfModel);
123 logger.error("Error message: " + e);
124 throw new InvalidDependencyModelException("Error parsing dependency model. " + e.getMessage());
126 return new VnfcDependencyModel(dependencies);
129 private void tryFillNode(Set<Node<Vnfc>> dependencies, String[] parentList, Node<Vnfc> vnfcNode) {
130 if (parentList.length > 0) {
131 fillNode(dependencies, vnfcNode, parentList);
135 private boolean resolveMandatory(JsonNode yamlNode) {
136 return !mandatoryDoesNotExist(yamlNode) && yamlNode.get(PROPERTIES).findValue(MANDATORY).booleanValue();
139 private boolean mandatoryDoesNotExist(JsonNode yamlNode) {
140 return yamlNode.get(PROPERTIES).findValue(MANDATORY) == null
141 || yamlNode.get(PROPERTIES).findValue(MANDATORY).asText().isEmpty();
144 private String resolveResilienceType(JsonNode yamlNode) {
145 String resilienceType;
146 // If "high_availability" is present then use the correctly spelled property name
147 if (yamlNode.get(PROPERTIES).findValue(HIGH_AVAILABILITY) != null &&
148 !yamlNode.get(PROPERTIES).findValue(HIGH_AVAILABILITY).asText().isEmpty()) {
149 resilienceType = dependencyMap
150 .get(yamlNode.get(PROPERTIES).findValue(HIGH_AVAILABILITY).textValue());
152 // The property name "high_availability" was misspelled in the code so leaving in the code to check for the
153 // incorrectly spelled version to avoid breaking existing configurations using the misspelled version
154 else if (yamlNode.get(PROPERTIES).findValue(HIGH_AVAILABLITY) == null
155 || yamlNode.get(PROPERTIES).findValue(HIGH_AVAILABLITY).asText().isEmpty()) {
156 resilienceType = ACTIVE_ACTIVE;
158 resilienceType = dependencyMap
159 .get(yamlNode.get(PROPERTIES).findValue(HIGH_AVAILABLITY).textValue());
161 return resilienceType;
164 private Vnfc createVnfc(boolean mandatory, String resilienceType, String vnfcType) {
165 Vnfc vnfc = new Vnfc();
166 vnfc.setMandatory(mandatory);
167 vnfc.setResilienceType(resilienceType);
168 vnfc.setVnfcType(vnfcType);
172 private String getQualifiedVnfcType(String fullvnfcType) {
173 return fullvnfcType.substring(fullvnfcType.lastIndexOf('.') + 1, fullvnfcType.length());
176 private void fillNode(Set<Node<Vnfc>> nodes, Node<Vnfc> node, String[] parentList) {
177 for (String type : parentList) {
178 String parentType = getVnfcType(type);
179 Node<Vnfc> parentNode = getNode(nodes, parentType);
180 if (parentNode != null) {
181 logger.debug("VNFC already exists for VNFC type: " + parentType + ". Adding it to parent list");
182 node.addParent(parentNode.getChild());
184 logger.debug("VNFC does not exist for VNFC type: " + parentType + ". Creating new VNFC");
185 parentNode = new Node<>(createVnfc(false, null, parentType));
186 node.addParent(parentNode.getChild());
187 logger.debug("Adding VNFC to dependency model: " + parentNode);
188 nodes.add(parentNode);
193 private String[] getDependencyArray(JsonNode node, JsonNode nodeTemplateNode)
194 throws InvalidDependencyModelException {
195 JsonNode requirementsNode = node.get("requirements");
196 Set<String> dependencyList = new HashSet<>();
197 if (requirementsNode != null) {
198 for (JsonNode internalNode : requirementsNode) {
199 /* TODO: In this release we are supporting both relationship = tosca.capabilities.Node
200 and relationship = tosca.relationships.DependsOn
201 we need to remove one of them in next release post confirming with SDC team */
202 if (verifyNode(internalNode)) {
203 parseDependencyModel(node, nodeTemplateNode, dependencyList, internalNode);
206 return dependencyList.toArray(new String[0]);
208 return new String[0];
212 private void parseDependencyModel(JsonNode node, JsonNode nodeTemplateNode, Set<String> dependencyList,
213 JsonNode internalNode) throws InvalidDependencyModelException {
215 if (internalNode.findValue("node") != null) {
216 String nodeName = internalNode.findValue("node").asText();
217 String fullVnfcName = nodeTemplateNode.get(nodeName).get("type").asText();
218 dependencyList.add(getQualifiedVnfcType(fullVnfcName));
220 throw new InvalidDependencyModelException(
221 "Error parsing dependency model. Dependent Node not found for " + node.get("type"));
225 private boolean verifyNode(JsonNode internalNode) {
226 return nodeNullCheck(internalNode)
227 && "tosca.capabilities.Node".equalsIgnoreCase(internalNode.findValue("capability").asText())
228 && ("tosca.relationships.DependsOn".equalsIgnoreCase(internalNode.findValue(RELATIONSHIP).asText())
229 || "tosca.capabilities.Node".equalsIgnoreCase(internalNode.findValue(RELATIONSHIP).asText()));
232 private boolean nodeNullCheck(JsonNode internalNode) {
233 return internalNode.get("dependency") != null && internalNode.findValue("capability") != null
234 && internalNode.findValue(RELATIONSHIP) != null;
237 protected Node<Vnfc> getNode(Set<Node<Vnfc>> nodes, String vnfcType) {
238 Iterator<Node<Vnfc>> itr = nodes.iterator();
240 while (itr.hasNext()) {
242 if (node.getChild().getVnfcType().equalsIgnoreCase(vnfcType)) {
248 private String getVnfcType(String type) {
249 return type.substring(type.lastIndexOf('.') + 1, type.length());
252 protected ObjectMapper getMapper() {
253 return new ObjectMapper(new YAMLFactory());