com.hazelcast.cp.internal.datastructures.countdownlatch.operation

Class CountDownOp

java.lang.Object

com.hazelcast.cp.internal.RaftOp

com.hazelcast.cp.internal.datastructures.countdownlatch.operation.AbstractCountDownLatchOp

com.hazelcast.cp.internal.datastructures.countdownlatch.operation.CountDownOp

All Implemented Interfaces:

IndeterminateOperationStateAware, DataSerializable, IdentifiedDataSerializable

public class CountDownOp
extends AbstractCountDownLatchOp
implements IndeterminateOperationStateAware

Operation for ICountDownLatch.countDown()

Field Summary

Fields inherited from class com.hazelcast.cp.internal.datastructures.countdownlatch.operation.AbstractCountDownLatchOp

name

Constructor Summary

Constructors

Constructor and Description
CountDownOp()
CountDownOp(String name, UUID invocationUid, int expectedRound)

Method Summary

Modifier and Type	Method and Description
int	getId() Returns type identifier for this class.
boolean	isRetryableOnIndeterminateOperationState() Returns true if duplicate commit of the operation is equivalent to committing it only once.
void	readData(ObjectDataInput in) Reads fields from the input stream
Object	run(CPGroupId groupId, long commitIndex) Contains actual Raft operation logic.
protected void	toString(StringBuilder sb)
void	writeData(ObjectDataOutput out) Writes object fields to output stream

Methods inherited from class com.hazelcast.cp.internal.datastructures.countdownlatch.operation.AbstractCountDownLatchOp

getFactoryId, getServiceName

Methods inherited from class com.hazelcast.cp.internal.RaftOp

getLogger, getNodeEngine, getService, logFailure, setNodeEngine, toString

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

Constructor Detail

CountDownOp

public CountDownOp()

CountDownOp

public CountDownOp(String name,
                   UUID invocationUid,
                   int expectedRound)

Method Detail

run

public Object run(CPGroupId groupId,
                  long commitIndex)

Description copied from class: RaftOp

Contains actual Raft operation logic. State change represented by this operation should be applied and execution result should be returned to the caller.

Specified by:

run in class RaftOp

Parameters:

groupId - groupId of the specific Raft group

commitIndex - commitIndex of the log entry keeping this operation

Returns:

result of the operation execution

isRetryableOnIndeterminateOperationState

public boolean isRetryableOnIndeterminateOperationState()

Description copied from interface: IndeterminateOperationStateAware

Returns true if duplicate commit of the operation is equivalent to committing it only once.

Specified by:

isRetryableOnIndeterminateOperationState in interface IndeterminateOperationStateAware

getId

public int getId()

Description copied from interface: IdentifiedDataSerializable

Returns type identifier for this class. It should be unique per DataSerializableFactory.

Specified by:

getId in interface IdentifiedDataSerializable

Returns:

type ID

writeData

public void writeData(ObjectDataOutput out)
               throws IOException

Description copied from interface: DataSerializable

Writes object fields to output stream

Specified by:

writeData in interface DataSerializable

Overrides:

writeData in class AbstractCountDownLatchOp

Parameters:

out - output

Throws:

IOException - if an I/O error occurs. In particular, an IOException may be thrown if the output stream has been closed.

readData

public void readData(ObjectDataInput in)
              throws IOException

Description copied from interface: DataSerializable

Reads fields from the input stream

Specified by:

readData in interface DataSerializable

Overrides:

readData in class AbstractCountDownLatchOp

Parameters:

in - input

Throws:

IOException - if an I/O error occurs. In particular, an IOException may be thrown if the input stream has been closed.

toString

protected void toString(StringBuilder sb)

Overrides:

toString in class AbstractCountDownLatchOp