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Diffstat (limited to 'aai-core/src/main/java/org/openecomp/aai/dbmap/AAIGraph.java')
| -rw-r--r-- | aai-core/src/main/java/org/openecomp/aai/dbmap/AAIGraph.java | 187 |
1 files changed, 187 insertions, 0 deletions
diff --git a/aai-core/src/main/java/org/openecomp/aai/dbmap/AAIGraph.java b/aai-core/src/main/java/org/openecomp/aai/dbmap/AAIGraph.java new file mode 100644 index 00000000..b4be1a37 --- /dev/null +++ b/aai-core/src/main/java/org/openecomp/aai/dbmap/AAIGraph.java @@ -0,0 +1,187 @@ +/*- + * ============LICENSE_START======================================================= + * org.openecomp.aai + * ================================================================================ + * Copyright (C) 2017 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.openecomp.aai.dbmap; + +import java.io.FileInputStream; +import java.io.FileNotFoundException; +import java.io.IOException; +import java.io.InputStream; +import java.util.HashMap; +import java.util.Map; +import java.util.Properties; + +import org.apache.commons.lang.exception.ExceptionUtils; +import org.apache.tinkerpop.gremlin.structure.io.IoCore; + +import org.openecomp.aai.dbgen.SchemaGenerator; +import org.openecomp.aai.exceptions.AAIException; +import org.openecomp.aai.util.AAIConstants; +import com.att.eelf.configuration.EELFLogger; +import com.att.eelf.configuration.EELFManager; +import com.thinkaurelius.titan.core.TitanFactory; +import com.thinkaurelius.titan.core.TitanGraph; +import com.thinkaurelius.titan.core.TitanTransaction; +import com.thinkaurelius.titan.core.schema.TitanManagement; + +/** + * Database Mapping class which acts as the middle man between the REST + * interface objects and Titan DB objects. This class provides methods to commit + * the objects received on the REST interface into the Titan graph database as + * vertices and edges. Transactions are also managed here by using a TitanGraph + * object to load, commit/rollback and shutdown for each request. The data model + * rules such as keys/required properties are handled by calling DBMeth methods + * which are driven by a specification file in json. + * + + */ +public class AAIGraph { + + protected Map<String, TitanGraph> graphs = new HashMap<>(); + protected static final String COMPONENT = "aaidbmap"; + private final String REALTIME_DB = "realtime"; + private final String CACHED_DB = "cached"; + private final EELFLogger logger = EELFManager.getInstance().getLogger(this.getClass().getSimpleName()); + + + /** + * Instantiates a new AAI graph. + */ + private AAIGraph() { + try { + String rtConfig = System.getProperty("realtime.db.config"); + String cachedConfig = System.getProperty("cached.db.config"); + if (rtConfig == null) { + rtConfig = AAIConstants.REALTIME_DB_CONFIG; + } + if (cachedConfig == null) { + cachedConfig = AAIConstants.CACHED_DB_CONFIG; + } + this.loadGraph(REALTIME_DB, rtConfig); + this.loadGraph(CACHED_DB, cachedConfig); + } catch (Exception e) { + throw new RuntimeException("Failed to instantiate graphs", e); + } + } + + private static class Helper { + private static final AAIGraph INSTANCE = new AAIGraph(); + } + + /** + * Gets the single instance of AAIGraph. + * + * @return single instance of AAIGraph + */ + public static AAIGraph getInstance() { + return Helper.INSTANCE; + } + + private void loadGraph(String name, String configPath) throws AAIException { + try { + final TitanGraph graph = TitanFactory.open(configPath); + InputStream is = new FileInputStream(configPath); + Properties graphProps = new Properties(); + graphProps.load(is); + + if (graphProps.get("storage.backend").equals("inmemory")) { + // Load the propertyKeys, indexes and edge-Labels into the DB + loadSchema(graph); + if (graphProps.containsKey("load.snapshot.file")) { + String value = graphProps.getProperty("load.snapshot.file"); + if ("true".equals(value)) { + try { + String location = System.getProperty("snapshot.location"); + logAndPrint(logger, "Loading snapshot to inmemory graph."); + TitanTransaction transaction = graph.newTransaction(); + transaction.io(IoCore.graphson()).readGraph(location); + transaction.commit(); + logAndPrint(logger, "Snapshot loaded to inmemory graph."); + } catch (IOException e) { + graph.close(); + logAndPrint(logger, "ERROR: Could not load datasnapshot to in memory graph. \n" + ExceptionUtils.getFullStackTrace(e)); + System.exit(0); + } + } + } + } + + if (graph == null) { + throw new AAIException("AAI_5102"); + } + + graphs.put(name, graph); + } catch (FileNotFoundException fnfe) { + throw new AAIException("AAI_4001"); + } catch (IOException e) { + throw new AAIException("AAI_4002"); + + } + } + + private void loadSchema(TitanGraph graph) { + // Load the propertyKeys, indexes and edge-Labels into the DB + TitanManagement graphMgt = graph.openManagement(); + + System.out.println("-- loading schema into Titan"); + SchemaGenerator.loadSchemaIntoTitan( graph, graphMgt ); + } + + /** + * Graph shutdown. + */ + public void graphShutdown() { + graphs.get(REALTIME_DB).close(); + } + + /** + * Gets the graph. + * + * @return the graph + */ + public TitanGraph getGraph() { + return graphs.get(REALTIME_DB); + } + + public void graphShutdown(DBConnectionType connectionType) { + + graphs.get(this.getGraphName(connectionType)).close(); + } + + public TitanGraph getGraph(DBConnectionType connectionType) { + return graphs.get(this.getGraphName(connectionType)); + } + + private String getGraphName(DBConnectionType connectionType) { + String graphName = ""; + if (DBConnectionType.CACHED.equals(connectionType)) { + graphName = this.CACHED_DB; + } else if (DBConnectionType.REALTIME.equals(connectionType)) { + graphName = this.REALTIME_DB; + } + + return graphName; + } + + private void logAndPrint(EELFLogger logger, String msg) { + System.out.println(msg); + logger.info(msg); + } +} |