Record Class TwoPhaseCommands.CoordPrepare

java.lang.Object

java.lang.Record

com.loomcache.server.transaction.twopc.TwoPhaseCommands.CoordPrepare

Record Components:

txId - transaction id (non-null)

participantGroupIds - sorted, de-duplicated participant group IDs

operationPayload - serialized ReplicatedTransactionCommand so a new coord can re-derive per-group slices without needing the client to re-send the TX body

All Implemented Interfaces:

TwoPhaseCommands

Enclosing interface:

TwoPhaseCommands

public static record TwoPhaseCommands.CoordPrepare(@NonNull UUID txId, int @NonNull [] participantGroupIds, byte @NonNull [] operationPayload)
extends Record
implements TwoPhaseCommands

Durable coordinator PREPARE record, replicated through raft-0's own log. Captures enough state that a new raft-0 leader (after mid-TX churn) can reconstruct the in-flight TX roster and either (a) re-scatter PREPARE_GROUP to participants, OR (b) default to ABORT when it cannot determine whether votes completed under the old coord.

Nested Class Summary

Nested classes/interfaces inherited from interface TwoPhaseCommands

TwoPhaseCommands.CoordDecide, TwoPhaseCommands.CoordPrepare, TwoPhaseCommands.DecideAck, TwoPhaseCommands.DecideGroup, TwoPhaseCommands.DecideQuery, TwoPhaseCommands.Decision, TwoPhaseCommands.FrameWriter, TwoPhaseCommands.Kind, TwoPhaseCommands.PrepareAck, TwoPhaseCommands.PrepareGroup, TwoPhaseCommands.Vote

Field Summary

Fields inherited from interface TwoPhaseCommands

MAX_OPERATION_PAYLOAD_BYTES, MAX_PARTICIPANT_GROUP_COUNT, MAX_REASON_UTF_BYTES

Constructor Summary

Constructors

Constructor	Description
CoordPrepare(@NonNull UUID txId, int @NonNull [] participantGroupIds, byte @NonNull [] operationPayload)	Creates an instance of a CoordPrepare record class.

Method Summary

Modifier and Type	Method	Description
final boolean	equals(Object o)	Indicates whether some other object is "equal to" this one.
final int	hashCode()	Returns a hash code value for this object.
byte @NonNull []	operationPayload()	Returns the value of the operationPayload record component.
int @NonNull []	participantGroupIds()	Returns the value of the participantGroupIds record component.
byte @NonNull []	serialize()
final String	toString()	Returns a string representation of this record class.
@NonNull UUID	txId()	Returns the value of the txId record component.

Methods inherited from class Object

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

Constructor Details

CoordPrepare

public CoordPrepare(@NonNull UUID txId,
 int @NonNull [] participantGroupIds,
 byte @NonNull [] operationPayload)

Creates an instance of a CoordPrepare record class.

Parameters:

txId - the value for the txId record component

participantGroupIds - the value for the participantGroupIds record component

operationPayload - the value for the operationPayload record component

Method Details

participantGroupIds

public int @NonNull [] participantGroupIds()

Returns the value of the participantGroupIds record component.

Returns:

the value of the participantGroupIds record component

operationPayload

public byte @NonNull [] operationPayload()

Returns the value of the operationPayload record component.

Returns:

the value of the operationPayload record component

serialize

public byte @NonNull [] serialize()

toString

public final String toString()

Returns a string representation of this record class. The representation contains the name of the class, followed by the name and value of each of the record components.

Specified by:

toString in class Record

Returns:

a string representation of this object

hashCode

public final int hashCode()

Returns a hash code value for this object. The value is derived from the hash code of each of the record components.

Specified by:

hashCode in class Record

Returns:

a hash code value for this object

equals

public final boolean equals(Object o)

Indicates whether some other object is "equal to" this one. The objects are equal if the other object is of the same class and if all the record components are equal. All components in this record class are compared with Objects::equals(Object,Object).

Specified by:

equals in class Record

Parameters:

o - the object with which to compare

Returns:

true if this object is the same as the o argument; false otherwise.

txId

public @NonNull UUID txId()

Returns the value of the txId record component.

Returns:

the value of the txId record component