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

Class OCompleted2pcTask

java.lang.Object

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

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

com.orientechnologies.orient.server.distributed.impl.task.OCompleted2pcTask

All Implemented Interfaces:

ORemoteTask

Direct Known Subclasses:

OCompleted2pcTaskV1

public class OCompleted2pcTask
extends OAbstractReplicatedTask

Task to manage the end of distributed transaction when no fix is needed (OFixTxTask) and all the locks must be released. Locks are necessary to prevent concurrent modification of records before the transaction is finished.
This task uses the same partition keys used by TxTask to avoid synchronizing all the worker threads (and queues).

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
static int	FACTORYID
protected List<ORemoteTask>	fixTasks
protected ODistributedRequestId	requestId
protected boolean	success

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
OCompleted2pcTask()

Method Summary

Modifier and Type	Method and Description
void	addFixTask(ORemoteTask fixTask)
Object	execute(ODistributedRequestId msgId, OServer iServer, ODistributedServerManager iManager, ODatabaseDocumentInternal database)
void	fromStream(DataInput in, ORemoteTaskFactory taskFactory)
long	getDistributedTimeout() Computes the timeout according to the transaction size.
int	getFactoryId()
List<ORemoteTask>	getFixTasks()
String	getName()
int[]	getPartitionKey() In case of commit and rollback uses the FAST_NOLOCK, because there are no locking operation.
OCommandDistributedReplicateRequest.QUORUM_TYPE	getQuorumType()
ODistributedRequestId	getRequestId()
boolean	getSuccess()
OCompleted2pcTask	init(ODistributedRequestId iRequestId, boolean iSuccess, int[] partitionKey)
boolean	isIdempotent()
void	toStream(DataOutput out)
String	toString()

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

getFixTask, getLastLSN, getUndoTask

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

checkIsValid, getNodeSource, getResultStrategy, getSynchronousTimeout, getTotalTimeout, hasResponse, isNodeOnlineRequired, isUsingDatabase, setNodeSource

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

finished, received

Field Detail

FACTORYID

public static final int FACTORYID

See Also:

Constant Field Values

requestId

protected ODistributedRequestId requestId

success

protected boolean success

fixTasks

protected List<ORemoteTask> fixTasks

Constructor Detail

OCompleted2pcTask

public OCompleted2pcTask()

Method Detail

init

public OCompleted2pcTask init(ODistributedRequestId iRequestId,
                              boolean iSuccess,
                              int[] partitionKey)

getPartitionKey

public int[] getPartitionKey()

In case of commit and rollback uses the FAST_NOLOCK, because there are no locking operation. In case of fix, the locks could be necessary, so uses ALL.

Specified by:

getPartitionKey in interface ORemoteTask

Overrides:

getPartitionKey in class OAbstractRemoteTask

addFixTask

public void addFixTask(ORemoteTask fixTask)

execute

public Object execute(ODistributedRequestId msgId,
                      OServer iServer,
                      ODistributedServerManager iManager,
                      ODatabaseDocumentInternal database)
               throws Exception

Specified by:

execute in interface ORemoteTask

Specified by:

execute in class OAbstractRemoteTask

Throws:

Exception

getQuorumType

public OCommandDistributedReplicateRequest.QUORUM_TYPE getQuorumType()

Specified by:

getQuorumType in interface ORemoteTask

Specified by:

getQuorumType in class OAbstractRemoteTask

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 taskFactory)
                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:

getName

public String getName()

Specified by:

getName in interface ORemoteTask

Specified by:

getName in class OAbstractRemoteTask

getFactoryId

public int getFactoryId()

toString

public String toString()

Overrides:

toString in class OAbstractRemoteTask

getFixTasks

public List<ORemoteTask> getFixTasks()

getSuccess

public boolean getSuccess()

getRequestId

public ODistributedRequestId getRequestId()

isIdempotent

public boolean isIdempotent()

Specified by:

isIdempotent in interface ORemoteTask

Overrides:

isIdempotent in class OAbstractRemoteTask