com.hazelcast.cp.internal.datastructures.lock.operation

Class TryLockOp

java.lang.Object

com.hazelcast.cp.internal.RaftOp

com.hazelcast.cp.internal.datastructures.lock.operation.TryLockOp

All Implemented Interfaces:

IndeterminateOperationStateAware, DataSerializable, IdentifiedDataSerializable

public class TryLockOp
extends RaftOp
implements IndeterminateOperationStateAware

Operation for FencedLock.lock()

See Also:

com.hazelcast.cp.internal.datastructures.lock.RaftLock#acquire(LockEndpoint, long, UUID, boolean)

Constructor Summary

Constructors

Constructor and Description
TryLockOp()
TryLockOp(String name, long sessionId, long threadId, UUID invUid, long timeoutMs)

Method Summary

Modifier and Type	Method and Description
int	getFactoryId() Returns DataSerializableFactory factory ID for this class.
int	getId() Returns type identifier for this class.
String	getServiceName()
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.RaftOp

getLogger, getNodeEngine, getService, setNodeEngine, toString

Methods inherited from class java.lang.Object

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

Constructor Detail

TryLockOp

public TryLockOp()

TryLockOp

public TryLockOp(String name,
                 long sessionId,
                 long threadId,
                 UUID invUid,
                 long timeoutMs)

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

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

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

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.

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

toString

protected void toString(StringBuilder sb)

getServiceName

public final String getServiceName()

Specified by:

getServiceName in class RaftOp

getFactoryId

public int getFactoryId()

Description copied from interface: IdentifiedDataSerializable

Returns DataSerializableFactory factory ID for this class.

Specified by:

getFactoryId in interface IdentifiedDataSerializable

Returns:

factory ID