1 files changed, 100 insertions, 0 deletions
diff --git a/aai-resources/src/main/java/org/onap/aai/migration/ValueMigrator.java b/aai-resources/src/main/java/org/onap/aai/migration/ValueMigrator.java
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+++ b/aai-resources/src/main/java/org/onap/aai/migration/ValueMigrator.java
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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());
+                }
+            }
+        }
+    }
+}