runners/twister2/src/main/java/org/apache/beam/runners/twister2/translators/batch/ImpulseTranslatorBatch.java

/*
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you under the Apache License, Version 2.0 (the
 * "License"); you may not use this file except in compliance
 * with the License.  You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package org.apache.beam.runners.twister2.translators.batch;

import edu.iu.dsc.tws.tset.env.BatchTSetEnvironment;
import edu.iu.dsc.tws.tset.env.TSetEnvironment;
import edu.iu.dsc.tws.tset.sets.batch.SourceTSet;
import org.apache.beam.runners.twister2.Twister2BatchTranslationContext;
import org.apache.beam.runners.twister2.translators.BatchTransformTranslator;
import org.apache.beam.runners.twister2.translators.functions.ImpulseSource;
import org.apache.beam.sdk.transforms.Impulse;
import org.apache.beam.sdk.util.WindowedValue;
import org.apache.beam.sdk.values.PCollection;

/** Impulse translator. */
public class ImpulseTranslatorBatch implements BatchTransformTranslator<Impulse> {

  @Override
  public void translateNode(Impulse transform, Twister2BatchTranslationContext context) {
    final TSetEnvironment tsetEnv = context.getEnvironment();
    SourceTSet<WindowedValue<byte[]>> sourceTSet =
        ((BatchTSetEnvironment) tsetEnv).createSource(new ImpulseSource(), 1);
    PCollection<byte[]> output = context.getOutput(transform);
    context.setOutputDataSet(output, sourceTSet);
  }
}