1 files changed, 149 insertions, 0 deletions
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
index 00000000..84e15479
--- /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;
+	}
+
+}