org.janusgraph.diskstorage.cql

Class CQLStoreManager

java.lang.Object

org.janusgraph.diskstorage.common.AbstractStoreManager

org.janusgraph.diskstorage.common.DistributedStoreManager

org.janusgraph.diskstorage.cql.CQLStoreManager

All Implemented Interfaces:

KeyColumnValueStoreManager, StoreManager

public class CQLStoreManager
extends DistributedStoreManager
implements KeyColumnValueStoreManager

This class creates see CQLKeyColumnValueStores and handles Cassandra-backed allocation of vertex IDs for JanusGraph (when so configured).

Nested Class Summary

Nested classes/interfaces inherited from class org.janusgraph.diskstorage.common.DistributedStoreManager

DistributedStoreManager.Deployment, DistributedStoreManager.MaskedTimestamp

Field Summary

Fields

Modifier and Type	Field and Description
static String	CONSISTENCY_LOCAL_QUORUM
static String	CONSISTENCY_QUORUM
protected static CQLSessionBuilder	DEFAULT_CQL_SESSION_BUILDER
protected static CQLMutateManyFunctionBuilder	DEFAULT_MUTATE_MANY_FUNCTION_BUILDER
protected static CQLProgrammaticConfigurationLoaderBuilder	DEFAULT_PROGRAMMATIC_CONFIGURATION_LOADER_BUILDER
protected static CQLStoreFeaturesBuilder	DEFAULT_STORE_FEATURES_BUILDER

Fields inherited from class org.janusgraph.diskstorage.common.DistributedStoreManager

connectionTimeoutMS, hostnames, pageSize, password, port, times, username

Fields inherited from class org.janusgraph.diskstorage.common.AbstractStoreManager

assignTimestamp, batchLoading, storageConfig, transactional

Constructor Summary

Constructors

Constructor and Description
CQLStoreManager(Configuration configuration) Constructor for the CQLStoreManager given a JanusGraph Configuration.
CQLStoreManager(Configuration configuration, CQLMutateManyFunctionBuilder mutateManyFunctionBuilder, CQLStoreFeaturesBuilder storeFeaturesBuilder, CQLSessionBuilder sessionBuilder, CQLProgrammaticConfigurationLoaderBuilder baseConfigurationLoaderBuilder) Constructor for the CQLStoreManager given a JanusGraph Configuration.

Method Summary

Modifier and Type	Method and Description
StoreTransaction	beginTransaction(BaseTransactionConfig config)
void	clearStorage()
void	close()
static String	determineKeyspaceName(Configuration config)
boolean	exists()
DistributedStoreManager.Deployment	getDeployment()
ExecutorService	getExecutorService()
StoreFeatures	getFeatures()
Object	getHadoopManager()
String	getKeyspaceName()
List<KeyRange>	getLocalKeyPartition()
String	getName()
QueryBackPressure	getQueriesBackPressure()
com.datastax.oss.driver.api.core.CqlSession	getSession()
void	mutateMany(Map<String,Map<StaticBuffer,KCVMutation>> mutations, StoreTransaction txh)
KeyColumnValueStore	openDatabase(String name, StoreMetaData.Container metaData)

Methods inherited from class org.janusgraph.diskstorage.common.DistributedStoreManager

getPageSize, getSingleHostname, getTimestampProvider, hasAuthentication, sleepAfterWrite, toString

Methods inherited from class org.janusgraph.diskstorage.common.AbstractStoreManager

getMetaDataSchema, getStorageConfig, isAssignTimestamp

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

Methods inherited from interface org.janusgraph.diskstorage.keycolumnvalue.KeyColumnValueStoreManager

openDatabase

Field Detail

CONSISTENCY_LOCAL_QUORUM

public static final String CONSISTENCY_LOCAL_QUORUM

See Also:

Constant Field Values

CONSISTENCY_QUORUM

public static final String CONSISTENCY_QUORUM

See Also:

Constant Field Values

DEFAULT_CQL_SESSION_BUILDER

protected static final CQLSessionBuilder DEFAULT_CQL_SESSION_BUILDER

DEFAULT_PROGRAMMATIC_CONFIGURATION_LOADER_BUILDER

protected static final CQLProgrammaticConfigurationLoaderBuilder DEFAULT_PROGRAMMATIC_CONFIGURATION_LOADER_BUILDER

DEFAULT_MUTATE_MANY_FUNCTION_BUILDER

protected static final CQLMutateManyFunctionBuilder DEFAULT_MUTATE_MANY_FUNCTION_BUILDER

DEFAULT_STORE_FEATURES_BUILDER

protected static final CQLStoreFeaturesBuilder DEFAULT_STORE_FEATURES_BUILDER

Constructor Detail

CQLStoreManager

public CQLStoreManager(Configuration configuration)
                throws BackendException

Constructor for the CQLStoreManager given a JanusGraph Configuration.

Parameters:

configuration - Graph configuration

Throws:

BackendException - throws PermanentBackendException in case CQL connection cannot be initialized or CQLStoreManager cannot be initialized

CQLStoreManager

public CQLStoreManager(Configuration configuration,
                       CQLMutateManyFunctionBuilder mutateManyFunctionBuilder,
                       CQLStoreFeaturesBuilder storeFeaturesBuilder,
                       CQLSessionBuilder sessionBuilder,
                       CQLProgrammaticConfigurationLoaderBuilder baseConfigurationLoaderBuilder)
                throws BackendException

Constructor for the CQLStoreManager given a JanusGraph Configuration.

Parameters:

configuration - Graph configuration

mutateManyFunctionBuilder - Builder for mutate many function with or without executor service

storeFeaturesBuilder - Builder for store features function with DistributedStoreManager.Deployment

sessionBuilder - Builder for CqlSession

baseConfigurationLoaderBuilder - Builder for CqlSession main configuration. It's not guaranteed to be used if it's disabled or if other configuration types are provided with higher priority.

Throws:

BackendException - throws PermanentBackendException in case CQL connection cannot be initialized or CQLStoreManager cannot be initialized

Method Detail

getExecutorService

public ExecutorService getExecutorService()

getSession

public com.datastax.oss.driver.api.core.CqlSession getSession()

getKeyspaceName

public String getKeyspaceName()

close

public void close()
           throws BackendException

Specified by:

close in interface StoreManager

Throws:

BackendException

getName

public String getName()

Specified by:

getName in interface StoreManager

getDeployment

public DistributedStoreManager.Deployment getDeployment()

Specified by:

getDeployment in class DistributedStoreManager

getFeatures

public StoreFeatures getFeatures()

Specified by:

getFeatures in interface StoreManager

openDatabase

public KeyColumnValueStore openDatabase(String name,
                                        StoreMetaData.Container metaData)
                                 throws BackendException

Specified by:

openDatabase in interface KeyColumnValueStoreManager

Throws:

BackendException

beginTransaction

public StoreTransaction beginTransaction(BaseTransactionConfig config)
                                  throws BackendException

Specified by:

beginTransaction in interface StoreManager

Throws:

BackendException

clearStorage

public void clearStorage()
                  throws BackendException

Specified by:

clearStorage in interface StoreManager

Throws:

BackendException

exists

public boolean exists()
               throws BackendException

Specified by:

exists in interface StoreManager

Throws:

BackendException

getLocalKeyPartition

public List<KeyRange> getLocalKeyPartition()
                                    throws BackendException

Specified by:

getLocalKeyPartition in interface StoreManager

Throws:

BackendException

mutateMany

public void mutateMany(Map<String,Map<StaticBuffer,KCVMutation>> mutations,
                       StoreTransaction txh)
                throws BackendException

Specified by:

mutateMany in interface KeyColumnValueStoreManager

Throws:

BackendException

determineKeyspaceName

public static String determineKeyspaceName(Configuration config)

getHadoopManager

public Object getHadoopManager()

Specified by:

getHadoopManager in interface StoreManager

getQueriesBackPressure

public QueryBackPressure getQueriesBackPressure()