package org.infinispan.transaction.xa.recovery;
import java.util.Collection;
import javax.transaction.Status;
import org.infinispan.commands.write.WriteCommand;
import org.infinispan.remoting.transport.Address;
import org.infinispan.transaction.impl.RemoteTransaction;
import org.infinispan.transaction.xa.GlobalTransaction;
import org.infinispan.util.logging.Log;
import org.infinispan.util.logging.LogFactory;
/**
* Extends {@link org.infinispan.transaction.impl.RemoteTransaction} and adds recovery related information and functionality.
*
* @author Mircea.Markus@jboss.com
* @since 5.0
*/
public class RecoveryAwareRemoteTransaction extends RemoteTransaction implements RecoveryAwareTransaction {
private static final Log log = LogFactory.getLog(RecoveryAwareRemoteTransaction.class);
private static final boolean trace = log.isTraceEnabled();
private boolean prepared;
private boolean isOrphan;
private Integer status;
public RecoveryAwareRemoteTransaction(WriteCommand[] modifications, GlobalTransaction tx, int topologyId,
long txCreationTime) {
super(modifications, tx, topologyId, txCreationTime);
}
public RecoveryAwareRemoteTransaction(GlobalTransaction tx, int topologyId, long txCreationTime) {
super(tx, topologyId, txCreationTime);
}
/**
* A transaction is in doubt if it is prepared and and it is orphan.
*/
public boolean isInDoubt() {
return isPrepared() && isOrphan();
}
/**
* A remote transaction is orphan if the node on which the transaction originated (ie the originator) is no longer
* part of the cluster.
*/
public boolean isOrphan() {
return isOrphan;
}
/**
* Check's if this transaction's originator is no longer part of the cluster (orphan transaction) and updates
* {@link #isOrphan()}.
* @param currentMembers The current members of the cache.
*/
public void computeOrphan(Collection<Address> currentMembers) {
if (!currentMembers.contains(getGlobalTransaction().getAddress())) {
if (trace) log.tracef("This transaction's originator has left the cluster: %s", getGlobalTransaction());
isOrphan = true;
}
}
@Override
public boolean isPrepared() {
return prepared;
}
@Override
public void setPrepared(boolean prepared) {
this.prepared = prepared;
if (prepared) status = Status.STATUS_PREPARED;
}
@Override
public String toString() {
return getClass().getSimpleName() +
"{prepared=" + prepared +
", isOrphan=" + isOrphan +
", modifications=" + modifications +
", lookedUpEntries=" + lookedUpEntries +
", tx=" + tx +
"} ";
}
/**
* Called when after the 2nd phase of a 2PC is successful.
*
* @param committed true if tx successfully committed, false if tx successfully rolled back.
*/
public void markCompleted(boolean committed) {
status = committed ? Status.STATUS_COMMITTED : Status.STATUS_ROLLEDBACK;
}
/**
* Following values might be returned:
* <ul>
* <li> - {@link Status#STATUS_PREPARED} if the tx is prepared </li>
* <li> - {@link Status#STATUS_COMMITTED} if the tx is committed</li>
* <li> - {@link Status#STATUS_ROLLEDBACK} if the tx is rollback</li>
* <li> - null otherwise</li>
* </ul>
*/
public Integer getStatus() {
return status;
}
}