io.zeebe.logstreams.state

Class StateSnapshotMetadata

java.lang.Object

io.zeebe.logstreams.state.StateSnapshotMetadata

All Implemented Interfaces:

Comparable<StateSnapshotMetadata>

public class StateSnapshotMetadata
extends Object
implements Comparable<StateSnapshotMetadata>

Field Summary

Fields

Modifier and Type	Field and Description
static long	INITIAL_LAST_PROCESSED_EVENT_POSITION
static long	INITIAL_LAST_WRITTEN_EVENT_POSITION

Constructor Summary

Constructors

Constructor and Description
StateSnapshotMetadata(long lastSuccessfulProcessedEventPosition, long lastWrittenEventPosition, int lastWrittenEventTerm, boolean exists)

Method Summary

Modifier and Type	Method and Description
int	compareTo(StateSnapshotMetadata o)
static StateSnapshotMetadata	createInitial(int term)
boolean	equals(Object obj)
boolean	exists()
long	getLastSuccessfulProcessedEventPosition() Returns the last successful processed event position when the state was last updated.
long	getLastWrittenEventPosition() Returns the last written event position when the state was last updated.
int	getLastWrittenEventTerm() Returns the term of the last written event
int	hashCode()
boolean	isInitial()
String	toString()

Methods inherited from class java.lang.Object

clone, finalize, getClass, notify, notifyAll, wait, wait, wait

Field Detail

INITIAL_LAST_PROCESSED_EVENT_POSITION

public static final long INITIAL_LAST_PROCESSED_EVENT_POSITION

See Also:

Constant Field Values

INITIAL_LAST_WRITTEN_EVENT_POSITION

public static final long INITIAL_LAST_WRITTEN_EVENT_POSITION

See Also:

Constant Field Values

Constructor Detail

StateSnapshotMetadata

public StateSnapshotMetadata(long lastSuccessfulProcessedEventPosition,
                             long lastWrittenEventPosition,
                             int lastWrittenEventTerm,
                             boolean exists)

Method Detail

createInitial

public static StateSnapshotMetadata createInitial(int term)

Parameters:

term - the current term

Returns:

a snapshot metadata based on nothing but the term

getLastSuccessfulProcessedEventPosition

public long getLastSuccessfulProcessedEventPosition()

Returns the last successful processed event position when the state was last updated.

Returns:

last successful processed event position

getLastWrittenEventPosition

public long getLastWrittenEventPosition()

Returns the last written event position when the state was last updated.

Returns:

last written event position

getLastWrittenEventTerm

public int getLastWrittenEventTerm()

Returns the term of the last written event

Returns:

term of the last written event

exists

public boolean exists()

Returns:

true if there is a state associated to it, false otherwise

isInitial

public boolean isInitial()

equals

public boolean equals(Object obj)

Overrides:

equals in class Object

hashCode

public int hashCode()

Overrides:

hashCode in class Object

toString

public String toString()

Overrides:

toString in class Object

compareTo

public int compareTo(StateSnapshotMetadata o)

Specified by:

compareTo in interface Comparable<StateSnapshotMetadata>