src/main/java/org/openecomp/aai/champ/graph/impl/InMemoryChampGraphImpl.java

   1 /**
   2  * ============LICENSE_START==========================================
   3  * org.onap.aai
   4  * ===================================================================
   5  * Copyright © 2017 AT&T Intellectual Property. All rights reserved.
   6  * Copyright © 2017 Amdocs
   7  * ===================================================================
   8  * Licensed under the Apache License, Version 2.0 (the "License");
   9  * you may not use this file except in compliance with the License.
  10  * You may obtain a copy of the License at
  11  *
  12  *        http://www.apache.org/licenses/LICENSE-2.0
  13  *
  14  * Unless required by applicable law or agreed to in writing, software
  15  * distributed under the License is distributed on an "AS IS" BASIS,
  16  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  17  * See the License for the specific language governing permissions and
  18  * limitations under the License.
  19  * ============LICENSE_END============================================
  20  * ECOMP is a trademark and service mark of AT&T Intellectual Property.
  21  */
  22 package org.openecomp.aai.champ.graph.impl;
  23
  24 import java.io.IOException;
  25 import java.util.Collection;
  26 import java.util.HashMap;
  27 import java.util.Map;
  28 import java.util.Optional;
  29 import java.util.concurrent.ConcurrentHashMap;
  30 import java.util.stream.Stream;
  31
  32 import org.apache.tinkerpop.gremlin.structure.Edge;
  33 import org.apache.tinkerpop.gremlin.structure.Vertex;
  34 import org.apache.tinkerpop.gremlin.tinkergraph.structure.TinkerGraph;
  35 import org.openecomp.aai.champ.ChampCapabilities;
  36 import org.openecomp.aai.champ.exceptions.ChampIndexNotExistsException;
  37 import org.openecomp.aai.champ.model.ChampObjectIndex;
  38 import org.openecomp.aai.champ.model.ChampRelationshipIndex;
  39 import org.openecomp.aai.champ.schema.ChampSchemaEnforcer;
  40 import org.openecomp.aai.champ.schema.DefaultChampSchemaEnforcer;
  41 import org.slf4j.Logger;
  42
  43 import com.att.nsa.cambria.client.CambriaPublisher;
  44
  45 public final class InMemoryChampGraphImpl extends AbstractTinkerpopChampGraph {
  46
  47         private static final ChampCapabilities CAPABILITIES = new ChampCapabilities() {
  48
  49                 @Override
  50                 public boolean canDeleteObjectIndices() {
  51                         return true;
  52                 }
  53
  54                 @Override
  55                 public boolean canDeleteRelationshipIndices() {
  56                         return true;
  57                 }
  58         };
  59
  60         private final ConcurrentHashMap<String, ChampObjectIndex> objectIndices;
  61         private final ConcurrentHashMap<String, ChampRelationshipIndex> relationshipIndices;
  62
  63         private final ChampSchemaEnforcer schemaEnforcer;
  64         private final TinkerGraph graph;
  65
  66         private InMemoryChampGraphImpl(Builder builder) {
  67             super(builder.graphConfiguration);
  68                 this.graph = TinkerGraph.open();
  69
  70                 this.objectIndices = new ConcurrentHashMap<String, ChampObjectIndex> ();
  71                 this.relationshipIndices = new ConcurrentHashMap<String, ChampRelationshipIndex> ();
  72
  73                 this.schemaEnforcer = builder.schemaEnforcer;
  74         }
  75
  76         public static class Builder {
  77             private final Map<String, Object> graphConfiguration = new HashMap<String, Object> ();
  78                 private ChampSchemaEnforcer schemaEnforcer = new DefaultChampSchemaEnforcer();
  79
  80                 public Builder() {}
  81
  82                 public Builder schemaEnforcer(ChampSchemaEnforcer schemaEnforcer) {
  83                         this.schemaEnforcer = schemaEnforcer;
  84                         return this;
  85                 }
  86
  87                 public InMemoryChampGraphImpl build() {
  88                         return new InMemoryChampGraphImpl(this);
  89                 }
  90         }
  91
  92         protected ChampSchemaEnforcer getSchemaEnforcer() {
  93                 return schemaEnforcer;
  94         }
  95
  96         @Override
  97         protected TinkerGraph getGraph() {
  98                 return graph;
  99         }
 100
 101         private ConcurrentHashMap<String, ChampObjectIndex> getObjectIndices() {
 102                 return objectIndices;
 103         }
 104
 105         private ConcurrentHashMap<String, ChampRelationshipIndex> getRelationshipIndices() {
 106                 return relationshipIndices;
 107         }
 108
 109         public void executeStoreObjectIndex(ChampObjectIndex index) {
 110                 if (isShutdown()) throw new IllegalStateException("Cannot call storeObjectIndex() after shutdown has been initiated");
 111
 112                 getGraph().createIndex(index.getField().getName(), Vertex.class);
 113                 getObjectIndices().put(index.getName(), index);
 114         }
 115
 116         @Override
 117         public Optional<ChampObjectIndex> retrieveObjectIndex(String indexName) {
 118                 if (isShutdown()) throw new IllegalStateException("Cannot call retrieveObjectIndex() after shutdown has been initiated");
 119
 120                 if (getObjectIndices().containsKey(indexName))
 121                         return Optional.of(getObjectIndices().get(indexName));
 122
 123                 return Optional.empty();
 124         }
 125
 126         @Override
 127         public Stream<ChampObjectIndex> retrieveObjectIndices() {
 128                 if (isShutdown()) throw new IllegalStateException("Cannot call retrieveObjectIndices() after shutdown has been initiated");
 129
 130                 return getObjectIndices().values().stream();
 131         }
 132
 133         public void executeDeleteObjectIndex(String indexName) throws ChampIndexNotExistsException {
 134                 if (isShutdown()) throw new IllegalStateException("Cannot call deleteObjectIndex() after shutdown has been initiated");
 135
 136                 final ChampObjectIndex objectIndex = getObjectIndices().remove(indexName);
 137
 138                 if (objectIndex == null) throw new ChampIndexNotExistsException();
 139
 140                 getGraph().dropIndex(objectIndex.getField().getName(), Vertex.class);
 141         }
 142
 143         public void executeStoreRelationshipIndex(ChampRelationshipIndex index) {
 144                 if (isShutdown()) throw new IllegalStateException("Cannot call storeRelationshipIndex() after shutdown has been initiated");
 145
 146                 getGraph().createIndex(index.getField().getName(), Edge.class);
 147                 getRelationshipIndices().put(index.getName(), index);
 148         }
 149
 150         @Override
 151         public Optional<ChampRelationshipIndex> retrieveRelationshipIndex(String indexName) {
 152                 if (isShutdown()) throw new IllegalStateException("Cannot call retrieveRelationshipIndex() after shutdown has been initiated");
 153
 154                 if (getRelationshipIndices().containsKey(indexName)) {
 155                         return Optional.of(getRelationshipIndices().get(indexName));
 156                 }
 157
 158                 return Optional.empty();
 159         }
 160
 161         @Override
 162         public Stream<ChampRelationshipIndex> retrieveRelationshipIndices() {
 163                 if (isShutdown()) throw new IllegalStateException("Cannot call retrieveRelationshipIndices() after shutdown has been initiated");
 164
 165                 return getRelationshipIndices().values().stream();
 166         }
 167
 168         public void executeDeleteRelationshipIndex(String indexName) throws ChampIndexNotExistsException {
 169                 if (isShutdown()) throw new IllegalStateException("Cannot call deleteRelationshipIndex() after shutdown has been initiated");
 170
 171                 final ChampRelationshipIndex relationshipIndex = getRelationshipIndices().remove(indexName);
 172
 173                 if (relationshipIndex == null) throw new ChampIndexNotExistsException();
 174
 175                 getGraph().dropIndex(relationshipIndex.getField().getName(), Edge.class);
 176         }
 177
 178         @Override
 179         public ChampCapabilities capabilities() {
 180                 return CAPABILITIES;
 181         }
 182 }