Record Class TwoPhaseCommands.CoordDecide

java.lang.Object

java.lang.Record

com.loomcache.server.transaction.twopc.TwoPhaseCommands.CoordDecide

Record Components:

txId - transaction id (non-null)

decision - COMMIT or ABORT (non-null)

All Implemented Interfaces:

TwoPhaseCommands

Enclosing interface:

TwoPhaseCommands

public static record TwoPhaseCommands.CoordDecide(@NonNull UUID txId, @NonNull TwoPhaseCommands.Decision decision)
extends Record
implements TwoPhaseCommands

Durable coordinator DECIDE record, replicated through raft-0's own log BEFORE the coordinator fans TX_DECIDE_GROUP out to the participant groups. On new-leader startup, any pending TwoPhaseCommands.CoordPrepare with a matching TwoPhaseCommands.CoordDecide in the log replay gets re-broadcast as DECIDE_GROUP — honouring the coordinator's original decision rather than defaulting to ABORT and losing the TX.

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
CoordDecide(@NonNull UUID txId, @NonNull TwoPhaseCommands.Decision decision)	Creates an instance of a CoordDecide record class.

Method Summary

Modifier and Type	Method	Description
@NonNull TwoPhaseCommands.Decision	decision()	Returns the value of the decision record component.
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 []	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

CoordDecide

public CoordDecide(@NonNull UUID txId,
 @NonNull TwoPhaseCommands.Decision decision)

Creates an instance of a CoordDecide record class.

Parameters:

txId - the value for the txId record component

decision - the value for the decision record component

Method Details

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

decision

public @NonNull TwoPhaseCommands.Decision decision()

Returns the value of the decision record component.

Returns:

the value of the decision record component