hudi-client/src/test/java/org/apache/hudi/execution/TestBoundedInMemoryExecutor.java

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 * Licensed to the Apache Software Foundation (ASF) under one
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 * 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
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package org.apache.hudi.execution;

import org.apache.hudi.common.HoodieClientTestHarness;
import org.apache.hudi.common.HoodieTestDataGenerator;
import org.apache.hudi.common.model.HoodieRecord;
import org.apache.hudi.common.table.timeline.HoodieActiveTimeline;
import org.apache.hudi.common.util.Option;
import org.apache.hudi.common.util.queue.BoundedInMemoryQueueConsumer;
import org.apache.hudi.config.HoodieWriteConfig;
import org.apache.hudi.execution.CopyOnWriteLazyInsertIterable.HoodieInsertValueGenResult;

import org.apache.avro.generic.IndexedRecord;
import org.junit.After;
import org.junit.Assert;
import org.junit.Before;
import org.junit.Test;

import java.util.List;

import scala.Tuple2;

import static org.apache.hudi.execution.CopyOnWriteLazyInsertIterable.getTransformFunction;
import static org.mockito.Mockito.mock;
import static org.mockito.Mockito.when;

public class TestBoundedInMemoryExecutor extends HoodieClientTestHarness {

  private final String commitTime = HoodieActiveTimeline.createNewInstantTime();

  @Before
  public void setUp() throws Exception {
    initTestDataGenerator();
  }

  @After
  public void tearDown() throws Exception {
    cleanupResources();
  }

  @Test
  public void testExecutor() {

    final List<HoodieRecord> hoodieRecords = dataGen.generateInserts(commitTime, 100);

    HoodieWriteConfig hoodieWriteConfig = mock(HoodieWriteConfig.class);
    when(hoodieWriteConfig.getWriteBufferLimitBytes()).thenReturn(1024);
    BoundedInMemoryQueueConsumer<HoodieInsertValueGenResult<HoodieRecord>, Integer> consumer =
        new BoundedInMemoryQueueConsumer<HoodieInsertValueGenResult<HoodieRecord>, Integer>() {

          private int count = 0;

          @Override
          protected void consumeOneRecord(HoodieInsertValueGenResult<HoodieRecord> record) {
            count++;
          }

          @Override
          protected void finish() {}

          @Override
          protected Integer getResult() {
            return count;
          }
        };

    SparkBoundedInMemoryExecutor<HoodieRecord, Tuple2<HoodieRecord, Option<IndexedRecord>>, Integer> executor = null;
    try {
      executor = new SparkBoundedInMemoryExecutor(hoodieWriteConfig, hoodieRecords.iterator(), consumer,
          getTransformFunction(HoodieTestDataGenerator.AVRO_SCHEMA));
      int result = executor.execute();
      // It should buffer and write 100 records
      Assert.assertEquals(result, 100);
      // There should be no remaining records in the buffer
      Assert.assertFalse(executor.isRemaining());
    } finally {
      if (executor != null) {
        executor.shutdownNow();
      }
    }
  }
}