TupleToDimensionTupleConverter.java

package apex.benchmark;

import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

import com.datatorrent.api.DefaultInputPort;
import com.datatorrent.api.DefaultOutputPort;
import com.datatorrent.common.util.BaseOperator;

public class TupleToDimensionTupleConverter extends BaseOperator
{
  private static final transient Logger logger = LoggerFactory.getLogger(TupleToDimensionTupleConverter.class);

  protected long invalidTuples = 0;
  protected transient long invalidTuplesInWindow = 0;

  public transient DefaultInputPort<Tuple> inputPort = new DefaultInputPort<Tuple>()
  {
    @Override
    public void process(Tuple tuple)
    {
      processTuple(tuple);
    }
  };

  public final transient DefaultOutputPort<DimensionTuple> outputPort = new DefaultOutputPort<DimensionTuple>();

  public void processTuple(Tuple tuple)
  {
    DimensionTuple dt = DimensionTuple.fromTuple(tuple);
    if (dt == null) {
      invalidTuples++;
      invalidTuplesInWindow++;
      return;
    }
    outputPort.emit(dt);
  }

  @Override
  public void beginWindow(long windowId)
  {
    invalidTuplesInWindow = 0;
  }

  @Override
  public void endWindow()
  {
    if (invalidTuplesInWindow > 0) {
      logger.info("Invalid tuples in this window: {}; Total invalid tuples: {}", invalidTuplesInWindow, invalidTuples);
    }
  }
}