com.orientechnologies.orient.server.distributed.impl.task

Class OAbstract2pcTask

java.lang.Object

com.orientechnologies.orient.server.distributed.task.OAbstractRemoteTask

com.orientechnologies.orient.server.distributed.task.OAbstractReplicatedTask

com.orientechnologies.orient.server.distributed.impl.task.OAbstract2pcTask

All Implemented Interfaces:

ORemoteTask

Direct Known Subclasses:

OTxTask

public abstract class OAbstract2pcTask
extends OAbstractReplicatedTask

Distributed two phase commit task. Operations can keep locks on records on the distributed servers. A second message of OCompleted2pcTask is requested to unlock the records. Note that locks are freed after a (configurable) while anyway.

Author:

Luca Garulli (l.garulli--at--orientdb.com)

Nested Class Summary

Nested classes/interfaces inherited from interface com.orientechnologies.orient.server.distributed.task.ORemoteTask

ORemoteTask.RESULT_STRATEGY

Field Summary

Fields

Modifier and Type	Field and Description
protected List<OAbstractRemoteTask>	localUndoTasks
static String	NON_LOCAL_CLUSTER
protected OTxTaskResult	result
protected static long	serialVersionUID
protected List<OAbstractRecordReplicatedTask>	tasks

Fields inherited from class com.orientechnologies.orient.server.distributed.task.OAbstractReplicatedTask

lastLSN

Fields inherited from class com.orientechnologies.orient.server.distributed.task.OAbstractRemoteTask

ALL, ANY, FAST_NOLOCK, LOCK, nodeSource

Constructor Summary

Constructors

Constructor and Description
OAbstract2pcTask()

Method Summary

Modifier and Type	Method and Description
void	add(OAbstractRecordReplicatedTask iTask)
void	fromStream(DataInput in, ORemoteTaskFactory factory)
long	getDistributedTimeout() Computes the timeout according to the transaction size.
ORemoteTask	getFixTask(ODistributedRequest iRequest, ORemoteTask iOriginalTask, Object iBadResponse, Object iGoodResponse, String executorNodeName, ODistributedServerManager dManager)
int[]	getPartitionKey() Return the partition keys of all the sub-tasks.
OCommandDistributedReplicateRequest.QUORUM_TYPE	getQuorumType()
List<OAbstractRecordReplicatedTask>	getTasks()
ORemoteTask	getUndoTask(ODistributedServerManager dManager, ODistributedRequestId reqId, List<String> servers)
boolean	isIdempotent()
void	setLastLSN(OLogSequenceNumber lastLSN)
void	setLocalUndoTasks(List<OAbstractRemoteTask> undoTasks)
void	setNodeSource(String nodeSource)
void	toStream(DataOutput out)
String	toString()

Methods inherited from class com.orientechnologies.orient.server.distributed.task.OAbstractReplicatedTask

getLastLSN

Methods inherited from class com.orientechnologies.orient.server.distributed.task.OAbstractRemoteTask

checkIsValid, execute, getName, getNodeSource, getResultStrategy, getSynchronousTimeout, getTotalTimeout, hasResponse, isNodeOnlineRequired, isUsingDatabase

Methods inherited from class java.lang.Object

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

Methods inherited from interface com.orientechnologies.orient.server.distributed.task.ORemoteTask

getFactoryId

Field Detail

serialVersionUID

protected static final long serialVersionUID

See Also:

Constant Field Values

NON_LOCAL_CLUSTER

public static final String NON_LOCAL_CLUSTER

See Also:

Constant Field Values

tasks

protected final List<OAbstractRecordReplicatedTask> tasks

localUndoTasks

protected transient List<OAbstractRemoteTask> localUndoTasks

result

protected transient OTxTaskResult result

Constructor Detail

OAbstract2pcTask

public OAbstract2pcTask()

Method Detail

add

public void add(OAbstractRecordReplicatedTask iTask)

isIdempotent

public boolean isIdempotent()

Specified by:

isIdempotent in interface ORemoteTask

Overrides:

isIdempotent in class OAbstractRemoteTask

getPartitionKey

public int[] getPartitionKey()

Return the partition keys of all the sub-tasks.

Specified by:

getPartitionKey in interface ORemoteTask

Overrides:

getPartitionKey in class OAbstractRemoteTask

getQuorumType

public OCommandDistributedReplicateRequest.QUORUM_TYPE getQuorumType()

Specified by:

getQuorumType in interface ORemoteTask

Specified by:

getQuorumType in class OAbstractRemoteTask

getFixTask

public ORemoteTask getFixTask(ODistributedRequest iRequest,
                              ORemoteTask iOriginalTask,
                              Object iBadResponse,
                              Object iGoodResponse,
                              String executorNodeName,
                              ODistributedServerManager dManager)

Overrides:

getFixTask in class OAbstractReplicatedTask

getUndoTask

public ORemoteTask getUndoTask(ODistributedServerManager dManager,
                               ODistributedRequestId reqId,
                               List<String> servers)

Overrides:

getUndoTask in class OAbstractReplicatedTask

toStream

public void toStream(DataOutput out)
              throws IOException

Specified by:

toStream in interface ORemoteTask

Overrides:

toStream in class OAbstractRemoteTask

Throws:

IOException

fromStream

public void fromStream(DataInput in,
                       ORemoteTaskFactory factory)
                throws IOException

Specified by:

fromStream in interface ORemoteTask

Overrides:

fromStream in class OAbstractRemoteTask

Throws:

IOException

getDistributedTimeout

public long getDistributedTimeout()

Computes the timeout according to the transaction size.

Specified by:

getDistributedTimeout in interface ORemoteTask

Overrides:

getDistributedTimeout in class OAbstractRemoteTask

Returns:

getTasks

public List<OAbstractRecordReplicatedTask> getTasks()

setNodeSource

public void setNodeSource(String nodeSource)

Specified by:

setNodeSource in interface ORemoteTask

Overrides:

setNodeSource in class OAbstractRemoteTask

setLocalUndoTasks

public void setLocalUndoTasks(List<OAbstractRemoteTask> undoTasks)

setLastLSN

public void setLastLSN(OLogSequenceNumber lastLSN)

toString

public String toString()

Overrides:

toString in class OAbstractRemoteTask