package com.hazelcast.map.operation;
import com.hazelcast.map.RecordStore;
import com.hazelcast.nio.ObjectDataInput;
import com.hazelcast.nio.ObjectDataOutput;
import com.hazelcast.spi.BackupAwareOperation;
import com.hazelcast.spi.Operation;
import com.hazelcast.spi.PartitionAwareOperation;
import java.io.IOException;
/**
* Operation which evicts all keys except locked ones.
*/
public class EvictAllOperation extends AbstractMapOperation implements BackupAwareOperation, PartitionAwareOperation {
private boolean shouldRunOnBackup;
private int numberOfEvictedEntries;
public EvictAllOperation() {
}
public EvictAllOperation(String name) {
super(name);
}
@Override
public void run() throws Exception {
// TODO this also clears locked keys from near cache which should be preserved.
mapService.getMapServiceContext().getNearCacheProvider().clearNearCache(name);
final RecordStore recordStore = mapService.getMapServiceContext().getExistingRecordStore(getPartitionId(), name);
if (recordStore == null) {
return;
}
numberOfEvictedEntries = recordStore.evictAll();
shouldRunOnBackup = true;
}
@Override
public boolean shouldBackup() {
return shouldRunOnBackup;
}
@Override
public Object getResponse() {
return numberOfEvictedEntries;
}
@Override
public boolean returnsResponse() {
return true;
}
@Override
public int getSyncBackupCount() {
return mapService.getMapServiceContext().getMapContainer(name).getBackupCount();
}
@Override
public int getAsyncBackupCount() {
return mapService.getMapServiceContext().getMapContainer(name).getAsyncBackupCount();
}
@Override
public Operation getBackupOperation() {
return new EvictAllBackupOperation(name);
}
@Override
protected void writeInternal(ObjectDataOutput out) throws IOException {
super.writeInternal(out);
out.writeInt(numberOfEvictedEntries);
}
@Override
protected void readInternal(ObjectDataInput in) throws IOException {
super.readInternal(in);
numberOfEvictedEntries = in.readInt();
}
@Override
public String toString() {
return "EvictAllOperation{"
+ "shouldRunOnBackup=" + shouldRunOnBackup
+ ", numberOfEvictedEntries=" + numberOfEvictedEntries
+ '}';
}
}