2 * ============LICENSE_START=======================================================
4 * ================================================================================
5 * Copyright © 2017-2018 AT&T Intellectual Property. All rights reserved.
6 * ================================================================================
7 * Modifications Copyright © 2018 IBM.
8 * ================================================================================
9 * Licensed under the Apache License, Version 2.0 (the "License");
10 * you may not use this file except in compliance with the License.
11 * You may obtain a copy of the License at
13 * http://www.apache.org/licenses/LICENSE-2.0
15 * Unless required by applicable law or agreed to in writing, software
16 * distributed under the License is distributed on an "AS IS" BASIS,
17 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
18 * See the License for the specific language governing permissions and
19 * limitations under the License.
20 * ============LICENSE_END=========================================================
23 package org.onap.aai.dbmap;
25 import java.io.FileNotFoundException;
26 import java.util.Properties;
28 import org.apache.commons.configuration.PropertiesConfiguration;
29 import org.apache.commons.lang3.exception.ExceptionUtils;
30 import org.apache.tinkerpop.gremlin.structure.Graph;
31 import org.apache.tinkerpop.gremlin.structure.io.IoCore;
32 import org.janusgraph.core.JanusGraph;
33 import org.janusgraph.core.JanusGraphFactory;
34 import org.janusgraph.core.schema.JanusGraphManagement;
35 import org.onap.aai.config.SpringContextAware;
36 import org.onap.aai.dbgen.SchemaGenerator;
37 import org.onap.aai.dbgen.SchemaGenerator4Hist;
38 import org.onap.aai.exceptions.AAIException;
39 import org.onap.aai.util.AAIConstants;
40 import org.slf4j.Logger;
41 import org.slf4j.LoggerFactory;
44 * Database Mapping class which acts as the middle man between the REST
45 * interface objects and JanusGraph DB objects. This class provides methods to commit
46 * the objects received on the REST interface into the JanusGraph graph database as
47 * vertices and edges. Transactions are also managed here by using a JanusGraph
48 * object to load, commit/rollback and shutdown for each request. The data model
49 * rules such as keys/required properties are handled by calling DBMeth methods
50 * which are driven by a specification file in json.
54 public class AAIGraph {
56 private static final Logger logger = LoggerFactory.getLogger(AAIGraph.class);
57 private static final String IN_MEMORY = "inmemory";
58 protected JanusGraph graph;
59 private static boolean isInit = false;
62 * Instantiates a new AAI graph.
66 String serviceName = System.getProperty("aai.service.name", "NA");
67 String rtConfig = System.getProperty("realtime.db.config");
68 if (rtConfig == null) {
69 rtConfig = AAIConstants.REALTIME_DB_CONFIG;
71 this.loadGraph(rtConfig, serviceName);
72 } catch (Exception e) {
73 logger.error("Failed to instantiate graph", e);
74 throw new RuntimeException("Failed to instantiate graphs", e);
78 private static class Helper {
79 private static final AAIGraph INSTANCE = new AAIGraph();
87 * Gets the single instance of AAIGraph.
89 * @return single instance of AAIGraph
91 public static AAIGraph getInstance() {
93 return Helper.INSTANCE;
96 public static boolean isInit() {
100 private void loadGraph(String configPath, String serviceName) throws Exception {
101 // Graph being opened by JanusGraphFactory is being placed in hashmap to be used later
102 // These graphs shouldn't be closed until the application shutdown
104 PropertiesConfiguration propertiesConfiguration = new AAIGraphConfig.Builder(configPath)
105 .forService(serviceName).withGraphType("realtime").buildConfiguration();
106 graph = JanusGraphFactory.open(propertiesConfiguration);
108 Properties graphProps = new Properties();
109 propertiesConfiguration.getKeys()
110 .forEachRemaining(k -> graphProps.setProperty(k, propertiesConfiguration.getString(k)));
112 if (IN_MEMORY.equals(graphProps.get("storage.backend"))) {
113 // Load the propertyKeys, indexes and edge-Labels into the DB
115 loadSnapShotToInMemoryGraph(graph, graphProps);
119 throw new AAIException("AAI_5102");
122 } catch (FileNotFoundException e) {
123 throw new AAIException("AAI_4001", e);
127 private void loadSnapShotToInMemoryGraph(JanusGraph graph, Properties graphProps) {
128 if (logger.isDebugEnabled()) {
129 logger.debug("Load Snapshot to InMemory Graph");
131 if (graphProps.containsKey("load.snapshot.file")) {
132 String value = graphProps.getProperty("load.snapshot.file");
133 if ("true".equals(value)) {
134 try (Graph transaction = graph.newTransaction()) {
135 String location = System.getProperty("snapshot.location");
136 logger.info("Loading snapshot to inmemory graph.");
137 transaction.io(IoCore.graphson()).readGraph(location);
138 transaction.tx().commit();
139 logger.info("Snapshot loaded to inmemory graph.");
140 } catch (Exception e) {
141 logger.info(String.format("ERROR: Could not load datasnapshot to in memory graph. %n%s",
142 ExceptionUtils.getStackTrace(e)));
143 throw new RuntimeException(e);
149 private void loadSchema(JanusGraph graph) {
150 // Load the propertyKeys, indexes and edge-Labels into the DB
151 boolean dbNotEmpty = graph.traversal().V().limit(1).hasNext();
152 logger.info("-- loading schema into JanusGraph");
154 SpringContextAware.getApplicationContext().getEnvironment().getProperty("history.enabled", "false"))) {
155 JanusGraphManagement graphMgt = graph.openManagement();
156 SchemaGenerator4Hist.loadSchemaIntoJanusGraph(graphMgt, IN_MEMORY);
158 SchemaGenerator.loadSchemaIntoJanusGraph(graph, IN_MEMORY, dbNotEmpty);
163 * Close all of the graph connections made in the instance.
165 public void graphShutdown() {
166 if (graph != null && graph.isOpen()) {
176 public JanusGraph getGraph() {