com.bigdata.resources.MoveResult Maven / Gradle / Ivy
package com.bigdata.resources;
import java.util.UUID;
import java.util.concurrent.atomic.AtomicBoolean;
import com.bigdata.btree.IndexMetadata;
import com.bigdata.mdi.PartitionLocator;
import com.bigdata.service.DataService;
/**
* The object returned by {@link MoveIndexPartitionTask}.
*
* @author Bryan Thompson
* @version $Id$
*/
public class MoveResult extends AbstractResult {
final public UUID targetDataServiceUUID;
final public int newPartitionId;
/**
* The name of the new index partition on the target data service.
*
* Note: {@link AbstractResult#name} is the name of the source index
* partition that was moved to the target data service.
*/
final public String targetIndexName;
final public PartitionLocator oldLocator;
final public PartitionLocator newLocator;
/**
* false until the target index partition is registered in
* the MDS. This is used to decide whether or not we need to rollback a
* change in the MDS if the atomic update task fails during the commit.
*/
final protected AtomicBoolean registeredInMDS = new AtomicBoolean(false);
/**
* @param name
* The name of the source index partition.
* @param indexMetadata
* The index metadata object for the source index partition.
* @param targetDataServiceUUID
* The data service {@link UUID} for the target data service.
* @param newPartitionId
* The partition identifier assigned to the target index
* partition.
* @param oldLocator
* The locator for the source index partition.
* @param newLocator
* The locator for the new index partition.
*/
public MoveResult(final String name,//
final IndexMetadata indexMetadata,//
final UUID targetDataServiceUUID, //
final int newPartitionId,//
final PartitionLocator oldLocator,//
final PartitionLocator newLocator//
) {
super(name, indexMetadata);
if (targetDataServiceUUID == null)
throw new IllegalArgumentException();
if (oldLocator == null)
throw new IllegalArgumentException();
if (newLocator == null)
throw new IllegalArgumentException();
this.targetDataServiceUUID = targetDataServiceUUID;
this.newPartitionId = newPartitionId;
this.targetIndexName = DataService.getIndexPartitionName(indexMetadata
.getName(), newPartitionId);
this.oldLocator = oldLocator;
this.newLocator = newLocator;
}
public String toString() {
final StringBuilder sb = new StringBuilder();
sb.append("MoveResult");
sb.append("{ name=" + name);
sb.append(", newPartitionId=" + newPartitionId);
sb.append(", targetDataService=" + targetDataServiceUUID);
sb.append(", oldLocator=" + oldLocator);
sb.append(", newLocator=" + newLocator);
sb.append(" }");
return sb.toString();
}
}