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
  21 package org.onap.aai.dbmap;
  22
  23 import org.slf4j.Logger;
  24 import org.slf4j.LoggerFactory;
  25
  26 import java.io.FileInputStream;
  27 import java.io.IOException;
  28 import java.io.InputStream;
  29 import java.util.Properties;
  30
  31 import org.apache.commons.lang.exception.ExceptionUtils;
  32 import org.apache.tinkerpop.gremlin.structure.io.IoCore;
  33 import org.janusgraph.core.JanusGraph;
  34 import org.janusgraph.core.JanusGraphFactory;
  35 import org.janusgraph.core.JanusGraphTransaction;
  36 import org.janusgraph.core.schema.JanusGraphManagement;
  37 import org.onap.aai.dbgen.GraphSONPartialIO;
  38 import org.onap.aai.dbgen.SchemaGenerator;
  39 import org.onap.aai.logging.LogFormatTools;
  40
  41 public class InMemoryGraph {
  42
  43     private static final Logger LOGGER = LoggerFactory.getLogger(InMemoryGraph.class);
  44     private JanusGraph graph = null;
  45
  46     public InMemoryGraph(Builder builder) throws IOException {
  47         /*
  48          * Create a In-memory graph
  49          */
  50         InputStream is = new FileInputStream(builder.propertyFile);
  51         try {
  52             graph = JanusGraphFactory.open(builder.propertyFile);
  53
  54             Properties graphProps = new Properties();
  55             graphProps.load(is);
  56             JanusGraphManagement graphMgt = graph.openManagement();
  57             if (builder.isSchemaEnabled) {
  58                 LOGGER.info("Schema Enabled");
  59                 SchemaGenerator.loadSchemaIntoJanusGraph(graph, graphMgt, graphProps.getProperty("storage.backend"));
  60             }
  61             JanusGraphTransaction transaction = graph.newTransaction();
  62             LOGGER.info("Loading snapshot");
  63             if (builder.isPartialGraph) {
  64                 if ((builder.graphsonLocation != null) && (builder.graphsonLocation.length() > 0)) {
  65                     transaction.io(GraphSONPartialIO.build()).readGraph(builder.graphsonLocation);
  66                 } else {
  67                     transaction.io(GraphSONPartialIO.build()).reader().create().readGraph(builder.seqInputStream,
  68                             graph);
  69                 }
  70             } else {
  71                 if ((builder.graphsonLocation != null) && (builder.graphsonLocation.length() > 0)) {
  72                     transaction.io(IoCore.graphson()).readGraph(builder.graphsonLocation);
  73                 } else {
  74                     transaction.io(IoCore.graphson()).reader().create().readGraph(builder.seqInputStream, graph);
  75                 }
  76             }
  77             transaction.commit();
  78
  79         } catch (Exception e) {
  80             // TODO : Changesysout to logger
  81             e.printStackTrace();
  82             LOGGER.error("ERROR: Could not load datasnapshot to in memory graph. \n" + LogFormatTools.getStackTop(e));
  83             throw new IllegalStateException("Could not load datasnapshot to in memory graph");
  84
  85         } finally {
  86             is.close();
  87         }
  88
  89     }
  90
  91     public static class Builder {
  92         private String graphsonLocation = "";
  93         private String propertyFile = "";
  94         private boolean isSchemaEnabled = false;
  95         private InputStream seqInputStream = null;
  96         private boolean isPartialGraph = false;
  97
  98         /*
  99          * Builder constructor doesnt do anything
 100          */
 101         public Builder() {
 102             // Do nothing
 103         }
 104
 105         public InMemoryGraph build(String graphsonFile, String propertyFile, boolean isSchemaEnabled)
 106                 throws IOException {
 107             this.graphsonLocation = graphsonFile;
 108             this.propertyFile = propertyFile;
 109             this.isSchemaEnabled = isSchemaEnabled;
 110             return new InMemoryGraph(this);
 111         }
 112
 113         public InMemoryGraph build(InputStream sis, String propertyFile, boolean isSchemaEnabled) throws IOException {
 114             this.graphsonLocation = null;
 115             this.propertyFile = propertyFile;
 116             this.isSchemaEnabled = isSchemaEnabled;
 117             this.seqInputStream = sis;
 118             return new InMemoryGraph(this);
 119         }
 120
 121         public InMemoryGraph build(String graphsonFile, String propertyFile, boolean isSchemaEnabled,
 122                 boolean isPartialGraph) throws IOException {
 123             this.graphsonLocation = graphsonFile;
 124             this.propertyFile = propertyFile;
 125             this.isSchemaEnabled = isSchemaEnabled;
 126             this.isPartialGraph = isPartialGraph;
 127             return new InMemoryGraph(this);
 128         }
 129
 130         public InMemoryGraph build(InputStream sis, String propertyFile, boolean isSchemaEnabled,
 131                 boolean isPartialGraph) throws IOException {
 132             this.graphsonLocation = null;
 133             this.propertyFile = propertyFile;
 134             this.isSchemaEnabled = isSchemaEnabled;
 135             this.seqInputStream = sis;
 136             this.isPartialGraph = isPartialGraph;
 137             return new InMemoryGraph(this);
 138         }
 139     }
 140
 141     public JanusGraph getGraph() {
 142         return graph;
 143     }
 144
 145 }