aai-core/src/main/java/org/onap/aai/dbmap/InMemoryGraph.java

   1 /**
   2  * ============LICENSE_START=======================================================
   3  * org.onap.aai
   4  * ================================================================================
   5  * Copyright © 2017-2018 AT&T Intellectual Property. All rights reserved.
   6  * ================================================================================
   7  * Licensed under the Apache License, Version 2.0 (the "License");
   8  * you may not use this file except in compliance with the License.
   9  * You may obtain a copy of the License at
  10  *
  11  *    http://www.apache.org/licenses/LICENSE-2.0
  12  *
  13  * Unless required by applicable law or agreed to in writing, software
  14  * distributed under the License is distributed on an "AS IS" BASIS,
  15  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  16  * See the License for the specific language governing permissions and
  17  * limitations under the License.
  18  * ============LICENSE_END=========================================================
  19  */
  20 package org.onap.aai.dbmap;
  21
  22 import java.io.FileInputStream;
  23 import java.io.IOException;
  24 import java.io.InputStream;
  25
  26 import java.util.Properties;
  27
  28 import org.apache.commons.lang.exception.ExceptionUtils;
  29 import org.apache.tinkerpop.gremlin.structure.io.IoCore;
  30 import org.onap.aai.dbgen.GraphSONPartialIO;
  31 import org.onap.aai.dbgen.SchemaGenerator;
  32 import org.onap.aai.logging.LogFormatTools;
  33
  34 import org.janusgraph.core.JanusGraphFactory;
  35 import org.janusgraph.core.JanusGraph;
  36 import org.janusgraph.core.JanusGraphTransaction;
  37 import org.janusgraph.core.schema.JanusGraphManagement;
  38
  39 import com.att.eelf.configuration.EELFLogger;
  40 import com.att.eelf.configuration.EELFManager;
  41
  42 public class InMemoryGraph {
  43
  44         private static final EELFLogger LOGGER = EELFManager.getInstance().getLogger(InMemoryGraph.class);
  45         private JanusGraph graph = null;
  46
  47
  48         public InMemoryGraph(Builder builder) throws IOException  {
  49                 /*
  50                  * Create a In-memory graph
  51                  */
  52                 InputStream is = new FileInputStream(builder.propertyFile);
  53                 try {
  54                         graph = JanusGraphFactory.open(builder.propertyFile);
  55
  56                         Properties graphProps = new Properties();
  57                         graphProps.load(is);
  58                         JanusGraphManagement graphMgt = graph.openManagement();
  59             if(builder.isSchemaEnabled){
  60                 LOGGER.info("Schema Enabled");
  61                 SchemaGenerator.loadSchemaIntoJanusGraph(graph, graphMgt, graphProps.getProperty("storage.backend"));
  62             }
  63                         JanusGraphTransaction transaction = graph.newTransaction();
  64                         LOGGER.info("Loading snapshot");
  65                         if(builder.isPartialGraph){
  66                                 if ( (builder.graphsonLocation != null) && (builder.graphsonLocation.length() > 0) ) {
  67                                         transaction.io(GraphSONPartialIO.build()).readGraph(builder.graphsonLocation);
  68                             }
  69                                 else {
  70                                         transaction.io(GraphSONPartialIO.build()).reader().create().readGraph(builder.seqInputStream, graph);
  71                                 }
  72                         }
  73                         else{
  74                                 if ( (builder.graphsonLocation != null) && (builder.graphsonLocation.length() > 0) ) {
  75                                         transaction.io(IoCore.graphson()).readGraph(builder.graphsonLocation);
  76                                 }
  77                                 else {
  78                                         transaction.io(IoCore.graphson()).reader().create().readGraph(builder.seqInputStream, graph);
  79                                 }
  80                         }
  81                         transaction.commit();
  82
  83                 } catch (Exception e) {
  84                         // TODO : Changesysout to logger
  85                         e.printStackTrace();
  86                         LOGGER.error(
  87                                         "ERROR: Could not load datasnapshot to in memory graph. \n" + LogFormatTools.getStackTop(e));
  88                         throw new IllegalStateException("Could not load datasnapshot to in memory graph");
  89
  90                 }
  91                 finally{
  92                         is.close();
  93                 }
  94
  95         }
  96
  97         public static class Builder {
  98                 private String graphsonLocation = "";
  99                 private String propertyFile = "";
 100                 private boolean isSchemaEnabled = false;
 101                 private InputStream seqInputStream = null;
 102                 private boolean isPartialGraph = false;
 103
 104
 105                 /*
 106                  * Builder constructor doesnt do anything
 107                  */
 108                 public Builder() {
 109                         //Do nothing
 110                 }
 111
 112                 public InMemoryGraph build(String graphsonFile, String propertyFile, boolean isSchemaEnabled) throws IOException {
 113                         this.graphsonLocation = graphsonFile;
 114                         this.propertyFile = propertyFile;
 115                         this.isSchemaEnabled = isSchemaEnabled;
 116                         return new InMemoryGraph(this);
 117                 }
 118
 119                 public InMemoryGraph build(InputStream sis, String propertyFile, boolean isSchemaEnabled) throws IOException {
 120                         this.graphsonLocation = null;
 121                         this.propertyFile = propertyFile;
 122                         this.isSchemaEnabled = isSchemaEnabled;
 123                         this.seqInputStream = sis;
 124                         return new InMemoryGraph(this);
 125                 }
 126
 127                 public InMemoryGraph build(String graphsonFile, String propertyFile, boolean isSchemaEnabled, boolean isPartialGraph) throws IOException {
 128                         this.graphsonLocation = graphsonFile;
 129                         this.propertyFile = propertyFile;
 130                         this.isSchemaEnabled = isSchemaEnabled;
 131                         this.isPartialGraph = isPartialGraph;
 132                         return new InMemoryGraph(this);
 133                 }
 134
 135                 public InMemoryGraph build(InputStream sis, String propertyFile, boolean isSchemaEnabled, boolean isPartialGraph) throws IOException {
 136                         this.graphsonLocation = null;
 137                         this.propertyFile = propertyFile;
 138                         this.isSchemaEnabled = isSchemaEnabled;
 139                         this.seqInputStream = sis;
 140                         this.isPartialGraph = isPartialGraph;
 141                         return new InMemoryGraph(this);
 142                 }
 143         }
 144
 145         public JanusGraph getGraph() {
 146                 return graph;
 147         }
 148
 149 }