org.wso2.siddhi.core.util.snapshot

Class SnapshotService

java.lang.Object

org.wso2.siddhi.core.util.snapshot.SnapshotService

public class SnapshotService
extends Object

Service level implementation to take/restore snapshots of processing elements.

Constructor Summary

Constructors

Constructor and Description
SnapshotService(SiddhiAppContext siddhiAppContext)

Method Summary

Modifier and Type	Method and Description
void	addSnapshotable(String queryName, Snapshotable snapshotable)
void	clearAllRevisions() Clear all the revisions of persistence store of Siddhi App
byte[]	fullSnapshot()
static ThreadLocal<Boolean>	getSkipSnapshotableThreadLocal()
ConcurrentHashMap<String,List<Snapshotable>>	getSnapshotableMap()
IncrementalSnapshot	incrementalSnapshot()
Map<String,Object>	queryState(String queryName)
void	restore(byte[] snapshot)
void	restore(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

getSkipSnapshotableThreadLocal

public static ThreadLocal<Boolean> getSkipSnapshotableThreadLocal()

getSnapshotableMap

public ConcurrentHashMap<String,List<Snapshotable>> getSnapshotableMap()

addSnapshotable

public void addSnapshotable(String queryName,
                            Snapshotable snapshotable)

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<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