io.aeron.cluster

Class RecordingLog.Entry

java.lang.Object

io.aeron.cluster.RecordingLog.Entry

Enclosing class:

RecordingLog

public static final class RecordingLog.Entry
extends Object

Representation of the entry in the RecordingLog.

Field Summary

Fields

Modifier and Type	Field and Description
String	archiveEndpoint Endpoint for an archive where a remote snapshot is located.
int	entryIndex Index of the entry in the recording log.
boolean	isValid Flag to indicate if the entry is invalid and thus should be ignored.
long	leadershipTermId Identity of the leadership term.
long	logPosition Position the log has reached for the entry.
long	recordingId Identity of the recording in the archive.
int	serviceId Identity of the service associated with the entry.
long	termBaseLogPosition The log position at the base of the leadership term.
long	timestamp Timestamp for the cluster clock in the time units configured for the cluster.
int	type Type, or classification, of the entry, e.g.

Constructor Summary

Constructors

Constructor and Description
Entry(long recordingId, long leadershipTermId, long termBaseLogPosition, long logPosition, long timestamp, int serviceId, int type, String archiveEndpoint, boolean isValid, long position, int entryIndex) A new entry in the recording log.

Method Summary

Modifier and Type	Method and Description
boolean	equals(Object o)
int	hashCode()
int	length() Binary length of the serialised entry including alignment.
String	toString()

Methods inherited from class java.lang.Object

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

Field Detail

recordingId

public final long recordingId

Identity of the recording in the archive.

leadershipTermId

public final long leadershipTermId

Identity of the leadership term.

termBaseLogPosition

public final long termBaseLogPosition

The log position at the base of the leadership term.

logPosition

public final long logPosition

Position the log has reached for the entry.

timestamp

public final long timestamp

Timestamp for the cluster clock in the time units configured for the cluster.

serviceId

public final int serviceId

Identity of the service associated with the entry.

type

public final int type

Type, or classification, of the entry, e.g. RecordingLog.ENTRY_TYPE_TERM or RecordingLog.ENTRY_TYPE_SNAPSHOT.

entryIndex

public final int entryIndex

Index of the entry in the recording log.

isValid

public final boolean isValid

Flag to indicate if the entry is invalid and thus should be ignored.

archiveEndpoint

public final String archiveEndpoint

Endpoint for an archive where a remote snapshot is located.

Constructor Detail

Entry

public Entry(long recordingId,
             long leadershipTermId,
             long termBaseLogPosition,
             long logPosition,
             long timestamp,
             int serviceId,
             int type,
             String archiveEndpoint,
             boolean isValid,
             long position,
             int entryIndex)

A new entry in the recording log.

Parameters:

recordingId - of the entry in an archive.

leadershipTermId - of this entry.

termBaseLogPosition - position of the log over leadership terms at the beginning of this term.

logPosition - position reached when the entry was created

timestamp - of this entry.

serviceId - service id for snapshot.

type - of the entry as a log of a term or a snapshot.

archiveEndpoint - archive where the snapshot is located, if entryType == ENTRY_TYPE_STANDBY_SNAPSHOT.

isValid - indicates if the entry is valid, RecordingLog.invalidateEntry(long, int) marks it invalid.

position - of the entry on disk.

entryIndex - of the entry on disk.

Throws:

ClusterException - if entryType == ENTRY_TYPE_STANDBY_SNAPSHOT and endpoint is null or empty.

Method Detail

length

public int length()

Binary length of the serialised entry including alignment.

Returns:

length of this entry.

equals

public boolean equals(Object o)

Overrides:

equals in class Object

hashCode

public int hashCode()

Overrides:

hashCode in class Object

toString

public String toString()

Overrides:

toString in class Object