Package io.siddhi.core.util.snapshot

Class SnapshotService

java.lang.Object

io.siddhi.core.util.snapshot.SnapshotService

public class SnapshotService
extends Object

Service level implementation to take/restore snapshots of processing elements. Memory : PartitionId + QueryName + ElementId + PartitionGroupByKey + Item Snapshot : PartitionId + PartitionGroupByKey + QueryName + ElementId + Item

Constructor Summary

Constructors

Constructor	Description
SnapshotService(SiddhiAppContext siddhiAppContext)

Method Summary

Modifier and Type	Method	Description
void	clearAllRevisions()	Clear all the revisions of persistence store of Siddhi App
byte[]	fullSnapshot()
static ThreadLocal<Boolean>	getSkipStateStorageThreadLocal()
Map<String,StateHolder>	getStateHolderMap(String partitionId, String queryName)
ConcurrentHashMap<String,io.siddhi.core.util.snapshot.SnapshotService.PartitionIdStateHolder>	getStates()
IncrementalSnapshot	incrementalSnapshot()
Map<String,Object>	queryState(String queryName)
void	restore(byte[] snapshot)
void	restore(Map<String,Map<String,Map<String,Map<Long,Map<IncrementalSnapshotInfo,byte[]>>>>> snapshot)
String	restoreLastRevision()
void	restoreRevision(String revision)

Methods inherited from class java.lang.Object

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

Constructor Detail

SnapshotService

public SnapshotService(SiddhiAppContext siddhiAppContext)

Method Detail

getSkipStateStorageThreadLocal

public static ThreadLocal<Boolean> getSkipStateStorageThreadLocal()

getStates

public ConcurrentHashMap<String,io.siddhi.core.util.snapshot.SnapshotService.PartitionIdStateHolder> getStates()

getStateHolderMap

public Map<String,StateHolder> getStateHolderMap(String partitionId,
                                                       String queryName)

fullSnapshot

public byte[] fullSnapshot()

incrementalSnapshot

public IncrementalSnapshot incrementalSnapshot()

queryState

public Map<String,Object> queryState(String queryName)

restore

public void restore(byte[] snapshot)
             throws CannotRestoreSiddhiAppStateException

Throws:

CannotRestoreSiddhiAppStateException

restore

public void restore(Map<String,Map<String,Map<String,Map<Long,Map<IncrementalSnapshotInfo,byte[]>>>>> snapshot)
             throws CannotRestoreSiddhiAppStateException

Throws:

CannotRestoreSiddhiAppStateException

restoreRevision

public void restoreRevision(String revision)
                     throws CannotRestoreSiddhiAppStateException

Throws:

CannotRestoreSiddhiAppStateException

restoreLastRevision

public String restoreLastRevision()
                           throws CannotRestoreSiddhiAppStateException

Throws:

CannotRestoreSiddhiAppStateException

clearAllRevisions

public void clearAllRevisions()
                       throws CannotClearSiddhiAppStateException

Clear all the revisions of persistence store of Siddhi App

Throws:

CannotClearSiddhiAppStateException