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package org.openecomp.sdc.be.components.path.beans;
import com.thinkaurelius.titan.core.InvalidElementException;
import com.thinkaurelius.titan.core.InvalidIDException;
import com.thinkaurelius.titan.core.PropertyKey;
import com.thinkaurelius.titan.core.QueryException;
import com.thinkaurelius.titan.core.SchemaViolationException;
import com.thinkaurelius.titan.core.TitanConfigurationException;
import com.thinkaurelius.titan.core.TitanFactory;
import com.thinkaurelius.titan.core.TitanGraph;
import com.thinkaurelius.titan.core.schema.ConsistencyModifier;
import com.thinkaurelius.titan.core.schema.TitanGraphIndex;
import com.thinkaurelius.titan.core.schema.TitanManagement;
import com.thinkaurelius.titan.core.util.TitanCleanup;
import com.thinkaurelius.titan.diskstorage.ResourceUnavailableException;
import com.thinkaurelius.titan.diskstorage.locking.PermanentLockingException;
import com.thinkaurelius.titan.graphdb.database.idassigner.IDPoolExhaustedException;
import fj.data.Either;
import org.apache.tinkerpop.gremlin.structure.Vertex;
import org.openecomp.sdc.be.dao.TitanClientStrategy;
import org.openecomp.sdc.be.dao.neo4j.GraphPropertiesDictionary;
import org.openecomp.sdc.be.dao.titan.TitanGraphClient;
import org.openecomp.sdc.be.dao.titan.TitanOperationStatus;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.stereotype.Component;
import javax.annotation.PostConstruct;
import java.util.ArrayList;
import java.util.HashMap;
@Component("titan-client")
public class InMemoryTitanGraphClient extends TitanGraphClient {
private static final Logger logger = LoggerFactory.getLogger(InMemoryTitanGraphClient.class);
private static final String OK = "GOOD";
public InMemoryTitanGraphClient() {
}
private TitanGraph graph;
TitanClientStrategy titanClientStrategy;
public InMemoryTitanGraphClient(TitanClientStrategy titanClientStrategy) {
super();
this.titanClientStrategy = titanClientStrategy;
logger.info("** TitanGraphClient created");
}
@PostConstruct
public TitanOperationStatus createGraph() {
logger.info("** createGraph started **");
graph = TitanFactory.build().set("storage.backend", "inmemory").open();
createTitanSchema();
logger.info("** in memory graph created");
return TitanOperationStatus.OK;
}
public void cleanupGraph() {
if (graph != null) {
// graph.shutdown();
graph.close();
TitanCleanup.clear(graph);
}
}
public TitanOperationStatus createGraph(String titanCfgFile) {
logger.info("** open graph with {} started", titanCfgFile);
try {
logger.info("openGraph : try to load file {}", titanCfgFile);
graph = TitanFactory.open(titanCfgFile);
if (graph.isClosed()) {
logger.error("titan graph was not initialized");
return TitanOperationStatus.NOT_CREATED;
}
} catch (Exception e) {
this.graph = null;
logger.info("createGraph : failed to open Titan graph with configuration file: {}", titanCfgFile, e);
return TitanOperationStatus.NOT_CONNECTED;
}
logger.info("** Titan graph created ");
return TitanOperationStatus.OK;
}
public Either<TitanGraph, TitanOperationStatus> getGraph() {
if (graph != null) {
return Either.left(graph);
} else {
return Either.right(TitanOperationStatus.NOT_CREATED);
}
}
public TitanOperationStatus commit() {
if (graph != null) {
try {
graph.tx().commit();
return TitanOperationStatus.OK;
} catch (Exception e) {
return handleTitanException(e);
}
} else {
return TitanOperationStatus.NOT_CREATED;
}
}
public TitanOperationStatus rollback() {
if (graph != null) {
try {
// graph.rollback();
graph.tx().rollback();
return TitanOperationStatus.OK;
} catch (Exception e) {
return handleTitanException(e);
}
} else {
return TitanOperationStatus.NOT_CREATED;
}
}
public static TitanOperationStatus handleTitanException(Exception e) {
if (e instanceof TitanConfigurationException) {
return TitanOperationStatus.TITAN_CONFIGURATION;
}
if (e instanceof SchemaViolationException) {
return TitanOperationStatus.TITAN_SCHEMA_VIOLATION;
}
if (e instanceof PermanentLockingException) {
return TitanOperationStatus.TITAN_SCHEMA_VIOLATION;
}
if (e instanceof IDPoolExhaustedException) {
return TitanOperationStatus.GENERAL_ERROR;
}
if (e instanceof InvalidElementException) {
return TitanOperationStatus.INVALID_ELEMENT;
}
if (e instanceof InvalidIDException) {
return TitanOperationStatus.INVALID_ID;
}
if (e instanceof QueryException) {
return TitanOperationStatus.INVALID_QUERY;
}
if (e instanceof ResourceUnavailableException) {
return TitanOperationStatus.RESOURCE_UNAVAILABLE;
}
if (e instanceof IllegalArgumentException) {
// TODO check the error message??
return TitanOperationStatus.ILLEGAL_ARGUMENT;
}
return TitanOperationStatus.GENERAL_ERROR;
}
public boolean getHealth() {
return true;
}
private boolean isGraphOpen() {
return true;
}
private static final String TITAN_HEALTH_CHECK_STR = "titanHealthCheck";
private void createTitanSchema() {
TitanManagement graphMgt = graph.openManagement();
TitanGraphIndex index = null;
for (GraphPropertiesDictionary prop : GraphPropertiesDictionary.values()) {
PropertyKey propKey = null;
if (!graphMgt.containsPropertyKey(prop.getProperty())) {
Class<?> clazz = prop.getClazz();
if (!ArrayList.class.getName().equals(clazz.getName()) && !HashMap.class.getName().equals(clazz.getName())) {
propKey = graphMgt.makePropertyKey(prop.getProperty()).dataType(prop.getClazz()).make();
}
} else {
propKey = graphMgt.getPropertyKey(prop.getProperty());
}
if (prop.isIndexed()) {
if (!graphMgt.containsGraphIndex(prop.getProperty())) {
if (prop.isUnique()) {
index = graphMgt.buildIndex(prop.getProperty(), Vertex.class).addKey(propKey).unique().buildCompositeIndex();
graphMgt.setConsistency(propKey, ConsistencyModifier.LOCK); // Ensures
// only
// one
// name
// per
// vertex
graphMgt.setConsistency(index, ConsistencyModifier.LOCK); // Ensures
// name
// uniqueness
// in
// the
// graph
} else {
graphMgt.buildIndex(prop.getProperty(), Vertex.class).addKey(propKey).buildCompositeIndex();
}
}
}
}
graphMgt.commit();
}
}
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