Sync up the changes for v15

[aai/aai-common.git] / aai-core / src / main / java / org / onap / aai / dbmap / InMemoryGraph.java

diff --git a/aai-core/src/main/java/org/onap/aai/dbmap/InMemoryGraph.java b/aai-core/src/main/java/org/onap/aai/dbmap/InMemoryGraph.java
new file mode 100644 (file)
index 0000000..84e1547
--- /dev/null
+++ b/aai-core/src/main/java/org/onap/aai/dbmap/InMemoryGraph.java
@@ -0,0 +1,149 @@
+/**
+ * ============LICENSE_START=======================================================
+ * org.onap.aai
+ * ================================================================================
+ * Copyright © 2017-2018 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.onap.aai.dbmap;
+
+import java.io.FileInputStream;
+import java.io.IOException;
+import java.io.InputStream;
+
+import java.util.Properties;
+
+import org.apache.commons.lang.exception.ExceptionUtils;
+import org.apache.tinkerpop.gremlin.structure.io.IoCore;
+import org.onap.aai.dbgen.GraphSONPartialIO;
+import org.onap.aai.dbgen.SchemaGenerator;
+import org.onap.aai.logging.LogFormatTools;
+
+import org.janusgraph.core.JanusGraphFactory;
+import org.janusgraph.core.JanusGraph;
+import org.janusgraph.core.JanusGraphTransaction;
+import org.janusgraph.core.schema.JanusGraphManagement;
+
+import com.att.eelf.configuration.EELFLogger;
+import com.att.eelf.configuration.EELFManager;
+
+public class InMemoryGraph {
+
+       private static final EELFLogger LOGGER = EELFManager.getInstance().getLogger(InMemoryGraph.class);
+       private JanusGraph graph = null;
+
+
+       public InMemoryGraph(Builder builder) throws IOException  {
+               /*
+                * Create a In-memory graph
+                */
+               InputStream is = new FileInputStream(builder.propertyFile);
+               try {
+                       graph = JanusGraphFactory.open(builder.propertyFile);
+                       
+                       Properties graphProps = new Properties();
+                       graphProps.load(is);
+                       JanusGraphManagement graphMgt = graph.openManagement();
+            if(builder.isSchemaEnabled){
+               LOGGER.info("Schema Enabled");
+               SchemaGenerator.loadSchemaIntoJanusGraph(graph, graphMgt, graphProps.getProperty("storage.backend"));
+            }
+                       JanusGraphTransaction transaction = graph.newTransaction();
+                       LOGGER.info("Loading snapshot");
+                       if(builder.isPartialGraph){
+                               if ( (builder.graphsonLocation != null) && (builder.graphsonLocation.length() > 0) ) {
+                                       transaction.io(GraphSONPartialIO.build()).readGraph(builder.graphsonLocation);
+                           }
+                               else {
+                                       transaction.io(GraphSONPartialIO.build()).reader().create().readGraph(builder.seqInputStream, graph);
+                               }
+                       }
+                       else{
+                               if ( (builder.graphsonLocation != null) && (builder.graphsonLocation.length() > 0) ) {
+                                       transaction.io(IoCore.graphson()).readGraph(builder.graphsonLocation);
+                               }
+                               else {
+                                       transaction.io(IoCore.graphson()).reader().create().readGraph(builder.seqInputStream, graph);
+                               }
+                       }
+                       transaction.commit();
+                       
+               } catch (Exception e) {
+                       // TODO : Changesysout to logger
+                       e.printStackTrace();
+                       LOGGER.error(
+                                       "ERROR: Could not load datasnapshot to in memory graph. \n" + LogFormatTools.getStackTop(e));
+                       throw new IllegalStateException("Could not load datasnapshot to in memory graph");
+
+               }
+               finally{
+                       is.close();
+               }
+
+       }
+
+       public static class Builder {
+               private String graphsonLocation = "";
+               private String propertyFile = "";
+               private boolean isSchemaEnabled = false;
+               private InputStream seqInputStream = null;
+               private boolean isPartialGraph = false;
+
+
+               /*
+                * Builder constructor doesnt do anything
+                */
+               public Builder() {
+                       //Do nothing
+               }
+
+               public InMemoryGraph build(String graphsonFile, String propertyFile, boolean isSchemaEnabled) throws IOException {
+                       this.graphsonLocation = graphsonFile;
+                       this.propertyFile = propertyFile;
+                       this.isSchemaEnabled = isSchemaEnabled;
+                       return new InMemoryGraph(this);
+               }
+               
+               public InMemoryGraph build(InputStream sis, String propertyFile, boolean isSchemaEnabled) throws IOException {
+                       this.graphsonLocation = null;
+                       this.propertyFile = propertyFile;
+                       this.isSchemaEnabled = isSchemaEnabled;
+                       this.seqInputStream = sis;
+                       return new InMemoryGraph(this);
+               }
+               
+               public InMemoryGraph build(String graphsonFile, String propertyFile, boolean isSchemaEnabled, boolean isPartialGraph) throws IOException {
+                       this.graphsonLocation = graphsonFile;
+                       this.propertyFile = propertyFile;
+                       this.isSchemaEnabled = isSchemaEnabled;
+                       this.isPartialGraph = isPartialGraph;
+                       return new InMemoryGraph(this);
+               }
+               
+               public InMemoryGraph build(InputStream sis, String propertyFile, boolean isSchemaEnabled, boolean isPartialGraph) throws IOException {
+                       this.graphsonLocation = null;
+                       this.propertyFile = propertyFile;
+                       this.isSchemaEnabled = isSchemaEnabled;
+                       this.seqInputStream = sis;
+                       this.isPartialGraph = isPartialGraph;
+                       return new InMemoryGraph(this);
+               }
+       }
+
+       public JanusGraph getGraph() {
+               return graph;
+       }
+
+}