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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;
import java.util.Map;
import org.apache.tinkerpop.gremlin.process.traversal.dsl.graph.GraphTraversal;
import org.apache.tinkerpop.gremlin.structure.Vertex;
import org.onap.aai.db.props.AAIProperties;
import org.onap.aai.serialization.engines.TransactionalGraphEngine;
import org.janusgraph.core.schema.JanusGraphManagement;
/**
* A migration template for filling in default values that are missing or are empty
*/
@MigrationPriority(0)
@MigrationDangerRating(1)
public abstract class ValueMigrator extends Migrator {
protected final Map<String, Map<String, ?>> propertyValuePairByNodeType;
protected final Boolean updateExistingValues;
protected final JanusGraphManagement graphMgmt;
/**
*
* @param engine
* @param propertyValuePairByNodeType - format {nodeType: { property: newValue}}
* @param updateExistingValues - if true, updates the value regardless if it already exists
*/
public ValueMigrator(TransactionalGraphEngine engine, Map propertyValuePairByNodeType, Boolean updateExistingValues) {
super(engine);
this.propertyValuePairByNodeType = propertyValuePairByNodeType;
this.updateExistingValues = updateExistingValues;
this.graphMgmt = engine.asAdmin().getManagementSystem();
}
/**
* Do not override this method as an inheritor of this class
*/
@Override
public void run() {
updateValues();
}
protected void updateValues() {
for (Map.Entry<String, Map<String, ?>> entry: propertyValuePairByNodeType.entrySet()) {
String nodeType = entry.getKey();
Map<String, ?> propertyValuePair = entry.getValue();
for (Map.Entry<String, ?> pair : propertyValuePair.entrySet()) {
String property = pair.getKey();
Object newValue = pair.getValue();
try {
GraphTraversal<Vertex, Vertex> g = this.engine.asAdmin().getTraversalSource().V()
.has(AAIProperties.NODE_TYPE, nodeType);
while (g.hasNext()) {
Vertex v = g.next();
if (v.property(property).isPresent() && !updateExistingValues) {
String propertyValue = v.property(property).value().toString();
if (propertyValue.isEmpty()) {
v.property(property, newValue);
logger.info(String.format("Node Type %s: Property %s is empty, adding value %s",
nodeType, property, newValue.toString()));
this.touchVertexProperties(v, false);
} else {
logger.info(String.format("Node Type %s: Property %s value already exists - skipping",
nodeType, property));
}
} else {
logger.info(String.format("Node Type %s: Property %s does not exist or " +
"updateExistingValues flag is set to True - adding the property with value %s",
nodeType, property, newValue.toString()));
v.property(property, newValue);
this.touchVertexProperties(v, false);
}
}
} catch (Exception e) {
logger.error(String.format("caught exception updating aai-node-type %s's property %s's value to " +
"%s: %s", nodeType, property, newValue.toString(), e.getMessage()));
logger.error(e.getMessage());
}
}
}
}
}
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