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/*-
* ============LICENSE_START=======================================================
* ONAP : APPC
* ================================================================================
* Copyright (C) 2017 AT&T Intellectual Property. All rights reserved.
* ================================================================================
* Copyright (C) 2017 Amdocs
* =============================================================================
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
* ECOMP is a trademark and service mark of AT&T Intellectual Property.
* ============LICENSE_END=========================================================
*/
package org.onap.appc.dg.dependencymanager.helper;
import com.att.eelf.configuration.EELFLogger;
import com.att.eelf.configuration.EELFManager;
import com.fasterxml.jackson.databind.JsonNode;
import com.fasterxml.jackson.databind.ObjectMapper;
import com.fasterxml.jackson.databind.node.ObjectNode;
import com.fasterxml.jackson.dataformat.yaml.YAMLFactory;
import org.apache.commons.lang3.StringUtils;
import org.onap.appc.dg.flowbuilder.exception.InvalidDependencyModel;
import org.onap.appc.dg.objects.Node;
import org.onap.appc.dg.objects.VnfcDependencyModel;
import org.onap.appc.domainmodel.Vnfc;
import java.io.IOException;
import java.util.*;
public class DependencyModelParser {
private static final EELFLogger logger = EELFManager.getInstance().getLogger(DependencyModelParser.class);
private static Map<String, String> dependencyMap;
private static final String PROPERTIES = "properties";
private static final String ACTIVE_ACTIVE = "Active-Active";
private static final String ACTIVE_PASSIVE = "Active-Passive";
private static final String HIGH_AVAILABLITY = "high_availablity";
private static final String MANDATORY = "mandatory";
private static final String TOPOLOGY_TEMPLATE = "topology_template";
static {
Map<String, String> dependencyTypeMappingMap =new HashMap<>();
dependencyTypeMappingMap.put("geo-activeactive", ACTIVE_ACTIVE);
dependencyTypeMappingMap.put("geo-activestandby", ACTIVE_PASSIVE);
dependencyTypeMappingMap.put("local-activeactive", ACTIVE_ACTIVE);
dependencyTypeMappingMap.put("local-activestandby", ACTIVE_PASSIVE);
dependencyMap = Collections.unmodifiableMap(dependencyTypeMappingMap);
}
public VnfcDependencyModel generateDependencyModel(String vnfModel,String vnfType) {
Set<Node<Vnfc>> dependencies = new HashSet<>();
ObjectMapper mapper = new ObjectMapper(new YAMLFactory());
boolean mandatory;
String resilienceType;
String prefix = "org.openecomp.resource.vfc."+vnfType+".abstract.nodes.";
try {
ObjectNode root = (ObjectNode) mapper.readTree(vnfModel);
if(root.get(TOPOLOGY_TEMPLATE) == null || root.get(TOPOLOGY_TEMPLATE).get("node_templates") == null) {
throw new InvalidDependencyModel("Dependency model is missing 'topology_template' or 'node_templates' elements");
}
JsonNode topologyTemplateNode = root.get(TOPOLOGY_TEMPLATE);
JsonNode nodeTemplateNode = topologyTemplateNode.get("node_templates");
Iterator<Map.Entry<String, JsonNode>> itretor = nodeTemplateNode.fields();
for (JsonNode yamlNode : nodeTemplateNode) {
logger.debug("Processing node: " + yamlNode);
String fullvnfcType = itretor.next().getValue().get("type").textValue();
String vnfcType= getQualifiedVnfcType(fullvnfcType);
String type = yamlNode.get("type").textValue();
type = type.substring(0,type.lastIndexOf(".")+1);
if(type.concat(vnfcType).toLowerCase().startsWith(prefix.concat(vnfcType).toLowerCase())) {
if(yamlNode.get(PROPERTIES).findValue(HIGH_AVAILABLITY) == null || yamlNode.get(PROPERTIES).findValue(HIGH_AVAILABLITY).asText().isEmpty()) {
resilienceType = ACTIVE_ACTIVE;
}else {
resilienceType = dependencyMap.get(yamlNode.get(PROPERTIES).findValue(HIGH_AVAILABLITY).textValue());
}
if(yamlNode.get(PROPERTIES).findValue(MANDATORY) == null || yamlNode.get(PROPERTIES).findValue(MANDATORY).asText().isEmpty()) {
mandatory = false;
}else {
mandatory = yamlNode.get(PROPERTIES).findValue(MANDATORY).booleanValue();
}
String[] parentList = getDependencyArray(yamlNode,nodeTemplateNode);
Node<Vnfc> vnfcNode = getNode(dependencies, vnfcType);
if (vnfcNode != null) {
logger.debug("Dependency node already exists for vnfc Type: " + vnfcType);
if (StringUtils.isEmpty(vnfcNode.getChild().getResilienceType())) {
logger.debug("Updating resilience type, dependencies and mandatory attribute for VNFC type: " + vnfcType);
vnfcNode.getChild().setResilienceType(resilienceType);
if (parentList != null && parentList.length > 0) {
addDependencies(dependencies, vnfcNode, parentList);
}
vnfcNode.getChild().setMandatory(mandatory);
}
} else {
logger.debug("Creating dependency node for : " + vnfcType);
vnfcNode = new Node<>(new Vnfc(vnfcType, resilienceType, null, mandatory));
if (parentList != null && parentList.length > 0)
addDependencies(dependencies, vnfcNode, parentList);
logger.debug("Adding VNFC to dependency model : " + vnfcNode);
dependencies.add(vnfcNode);
}
}
}
} catch (IOException e) {
logger.error("Error parsing dependency model : " + vnfModel);
logger.error("Error message : " + e);
throw new InvalidDependencyModel("Error parsing dependency model. " + e.getMessage());
}
return new VnfcDependencyModel(dependencies);
}
private String getQualifiedVnfcType(String fullvnfcType) {
return fullvnfcType.substring(fullvnfcType.lastIndexOf(".")+1,fullvnfcType.length());
}
private void addDependencies(Set<Node<Vnfc>> nodes, Node node, String[] parentList) {
for (String type : parentList) {
String parentType = getVnfcType(type);
Node<Vnfc> parentNode = getNode(nodes, parentType);
if (parentNode != null) {
logger.debug("VNFC already exists for VNFC type: " + parentType + ". Adding it to parent list ");
node.addParent(parentNode.getChild());
} else {
logger.debug("VNFC does not exist for VNFC type: " + parentType + ". Creating new VNFC ");
parentNode = new Node<>(new Vnfc(parentType, null));
node.addParent(parentNode.getChild());
logger.debug("Adding VNFC to dependency model : " + parentNode);
nodes.add(parentNode);
}
}
}
private String[] getDependencyArray(JsonNode node, JsonNode nodeTemplateNode) {
JsonNode requirementsNode = node.get("requirements");
List<String> dependencyList = new ArrayList();
if(requirementsNode!=null) {
for (JsonNode internalNode : requirementsNode) {
//TODO : In this release we are supporting both relationship = tosca.capabilities.Node and relationship =tosca.relationships.DependsOn we need to remove one of them in next release post confirming with SDC team
if (nodeNullCheck(internalNode) &&"tosca.capabilities.Node".equalsIgnoreCase(internalNode.findValue("capability").asText())
&& ("tosca.relationships.DependsOn".equalsIgnoreCase(internalNode.findValue("relationship").asText()) || "tosca.capabilities.Node".equalsIgnoreCase(internalNode.findValue("relationship").asText()))) {
if(internalNode.findValue("node") != null) {
String nodeName = internalNode.findValue("node").asText();
String fullVnfcName = nodeTemplateNode.get(nodeName).get("type").asText();
dependencyList.add(getQualifiedVnfcType(fullVnfcName));
}else{
throw new InvalidDependencyModel("Error parsing dependency model. " + "Dependent Node not found for "+ node.get("type"));
}
}
}
return dependencyList.toArray(new String[0]);
}else{
return new String[0];
}
}
private boolean nodeNullCheck(JsonNode internalNode) {
return internalNode.get("dependency") != null && internalNode.findValue("capability") != null && internalNode.findValue("relationship") != null;
}
private Node<Vnfc> getNode(Set<Node<Vnfc>> nodes, String vnfcType) {
Iterator itr = nodes.iterator();
Node<Vnfc> node;
while (itr.hasNext()) {
node = (Node<Vnfc>) itr.next();
if (node.getChild().getVnfcType().equalsIgnoreCase(vnfcType)) {
return node;
}
}
return null;
}
private String getVnfcType(String type) {
return type.substring(type.lastIndexOf('.') + 1, type.length());
}
}
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