com.hazelcast.cp.internal.raftop.metadata

Class GetInitialRaftGroupMembersIfCurrentGroupMemberOp

java.lang.Object

com.hazelcast.cp.internal.RaftOp

com.hazelcast.cp.internal.raftop.metadata.GetInitialRaftGroupMembersIfCurrentGroupMemberOp

All Implemented Interfaces:

IndeterminateOperationStateAware, RaftNodeAware, DataSerializable, IdentifiedDataSerializable

public class GetInitialRaftGroupMembersIfCurrentGroupMemberOp
extends RaftOp
implements RaftNodeAware, IndeterminateOperationStateAware, IdentifiedDataSerializable

When a CP member is added to a Raft group, a new member list is committed to the Raft group first. Then, new member list of the Raft group will be also committed to the Raft group. After the new member list is committed to the Raft group itself, the new member can receive append requests and it can try to initialize its local RaftNode instance. In order to the initialize itself, it can directly ask to the Raft group to verify if it is a current member of the Raft group.

This operation is NOT committed to the Metadata group. It is committed to the queried Raft group.

Constructor Summary

Constructors

Constructor and Description
GetInitialRaftGroupMembersIfCurrentGroupMemberOp()
GetInitialRaftGroupMembersIfCurrentGroupMemberOp(Endpoint cpMember)

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.
protected 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.
void	setRaftNode(RaftNode raftNode)
void	writeData(ObjectDataOutput out) Writes object fields to output stream

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

getLogger, getNodeEngine, getService, setNodeEngine, toString, toString

Methods inherited from class java.lang.Object

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

Constructor Detail

GetInitialRaftGroupMembersIfCurrentGroupMemberOp

public GetInitialRaftGroupMembersIfCurrentGroupMemberOp()

GetInitialRaftGroupMembersIfCurrentGroupMemberOp

public GetInitialRaftGroupMembersIfCurrentGroupMemberOp(Endpoint cpMember)

Method Detail

setRaftNode

public void setRaftNode(RaftNode raftNode)

Specified by:

setRaftNode in interface RaftNodeAware

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

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

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

getServiceName

protected String getServiceName()

Specified by:

getServiceName in class RaftOp

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.