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/**
* ============LICENSE_START=======================================================
* org.onap.aai
* ================================================================================
* Copyright © 2017-2018 AT&T Intellectual Property. All rights reserved.
* ================================================================================
* 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.
* ============LICENSE_END=========================================================
*/
package org.onap.aai.migration.v12;
import java.io.UnsupportedEncodingException;
import java.util.Iterator;
import java.util.Optional;
import java.util.UUID;
import org.apache.tinkerpop.gremlin.process.traversal.P;
import org.apache.tinkerpop.gremlin.process.traversal.dsl.graph.GraphTraversal;
import org.apache.tinkerpop.gremlin.structure.Direction;
import org.apache.tinkerpop.gremlin.structure.Vertex;
import org.onap.aai.db.props.AAIProperties;
import org.onap.aai.edges.EdgeIngestor;
import org.onap.aai.exceptions.AAIException;
import org.onap.aai.introspection.Introspector;
import org.onap.aai.introspection.LoaderFactory;
import org.onap.aai.introspection.exceptions.AAIUnknownObjectException;
import org.onap.aai.migration.MigrationDangerRating;
import org.onap.aai.migration.MigrationPriority;
import org.onap.aai.migration.Migrator;
import org.onap.aai.migration.Status;
import org.onap.aai.edges.enums.EdgeType;
import org.onap.aai.serialization.db.EdgeSerializer;
import org.onap.aai.serialization.engines.TransactionalGraphEngine;
import org.onap.aai.setup.SchemaVersions;
//@Enabled
@MigrationPriority(10)
@MigrationDangerRating(10)
public class MigrateServiceInstanceToConfiguration extends Migrator {
private boolean success = true;
private final String CONFIGURATION_NODE_TYPE = "configuration";
private final String SERVICE_INSTANCE_NODE_TYPE = "service-instance";
private Introspector configObj;
public MigrateServiceInstanceToConfiguration(TransactionalGraphEngine engine, LoaderFactory loaderFactory, EdgeIngestor edgeIngestor, EdgeSerializer edgeSerializer, SchemaVersions schemaVersions) {
super(engine, loaderFactory, edgeIngestor, edgeSerializer, schemaVersions);
try {
this.configObj = this.loader.introspectorFromName(CONFIGURATION_NODE_TYPE);
} catch (AAIUnknownObjectException e) {
this.configObj = null;
}
}
@Override
public void run() {
Vertex serviceInstance = null;
Vertex configuration = null;
String serviceInstanceId = "", tunnelBandwidth = "";
String bandwidthTotal, configType, nodeType;
GraphTraversal<Vertex, Vertex> serviceInstanceItr;
Iterator<Vertex> configurationItr;
try {
serviceInstanceItr = this.engine.asAdmin().getTraversalSource().V()
.has(AAIProperties.NODE_TYPE, P.within(getAffectedNodeTypes().get()))
.where(this.engine.getQueryBuilder()
.createEdgeTraversal(EdgeType.TREE, "service-instance", "service-subscription")
.getVerticesByProperty("service-type", "DHV")
.<GraphTraversal<?, ?>>getQuery());
if (serviceInstanceItr == null || !serviceInstanceItr.hasNext()) {
logger.info("No servince-instance nodes found with service-type of DHV");
return;
}
// iterate through all service instances of service-type DHV
while (serviceInstanceItr.hasNext()) {
serviceInstance = serviceInstanceItr.next();
if (serviceInstance != null && serviceInstance.property("bandwidth-total").isPresent()) {
serviceInstanceId = serviceInstance.value("service-instance-id");
logger.info("Processing service instance with id=" + serviceInstanceId);
bandwidthTotal = serviceInstance.value("bandwidth-total");
if (bandwidthTotal != null && !bandwidthTotal.isEmpty()) {
// check for existing edges to configuration nodes
configurationItr = serviceInstance.vertices(Direction.OUT, "has");
// create new configuration node if service-instance does not have existing ones
if (!configurationItr.hasNext()) {
logger.info(serviceInstanceId + " has no existing configuration nodes, creating new node");
createConfigurationNode(serviceInstance, bandwidthTotal);
continue;
}
// in case if configuration nodes exist, but none are DHV
boolean hasDHVConfig = false;
// service-instance has existing configuration nodes
while (configurationItr.hasNext()) {
configuration = configurationItr.next();
nodeType = configuration.value("aai-node-type").toString();
if (configuration != null && "configuration".equalsIgnoreCase(nodeType)) {
logger.info("Processing configuration node with id=" + configuration.property("configuration-id").value());
configType = configuration.value("configuration-type");
logger.info("Configuration type: " + configType);
// if configuration-type is DHV, update tunnel-bandwidth to bandwidth-total value
if ("DHV".equalsIgnoreCase(configType)) {
if (configuration.property("tunnel-bandwidth").isPresent()) {
tunnelBandwidth = configuration.value("tunnel-bandwidth");
} else {
tunnelBandwidth = "";
}
logger.info("Existing tunnel-bandwidth: " + tunnelBandwidth);
configuration.property("tunnel-bandwidth", bandwidthTotal);
touchVertexProperties(configuration, false);
logger.info("Updated tunnel-bandwidth: " + configuration.value("tunnel-bandwidth"));
hasDHVConfig = true;
}
}
}
// create new configuration node if none of existing config nodes are of type DHV
if (!hasDHVConfig) {
logger.info(serviceInstanceId + " has existing configuration nodes, but none are DHV, create new node");
createConfigurationNode(serviceInstance, bandwidthTotal);
}
}
}
}
} catch (AAIException | UnsupportedEncodingException e) {
logger.error("Caught exception while processing service instance with id=" + serviceInstanceId + " | " + e.toString());
success = false;
}
}
private void createConfigurationNode(Vertex serviceInstance, String bandwidthTotal) throws UnsupportedEncodingException, AAIException {
// create new vertex
Vertex configurationNode = serializer.createNewVertex(configObj);
// configuration-id: UUID format
String configurationUUID = UUID.randomUUID().toString();
configObj.setValue("configuration-id", configurationUUID);
// configuration-type: DHV
configObj.setValue("configuration-type", "DHV");
// migrate the bandwidth-total property from the service-instance to the
// tunnel-bandwidth property of the related configuration object
configObj.setValue("tunnel-bandwidth", bandwidthTotal);
// create edge between service instance and configuration: cousinEdge(out, in)
createCousinEdge(serviceInstance, configurationNode);
// serialize edge & vertex, takes care of everything
serializer.serializeSingleVertex(configurationNode, configObj, "migrations");
logger.info("Created configuration node with uuid=" + configurationUUID + ", tunnel-bandwidth=" + bandwidthTotal);
}
@Override
public Status getStatus() {
if (success) {
return Status.SUCCESS;
} else {
return Status.FAILURE;
}
}
@Override
public Optional<String[]> getAffectedNodeTypes() {
return Optional.of(new String[] {SERVICE_INSTANCE_NODE_TYPE});
}
@Override
public String getMigrationName() {
return "service-instance-to-configuration";
}
}
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