hbase-server/src/test/java/org/apache/hadoop/hbase/client/TestAsyncTableScanner.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.hadoop.hbase.client;

import java.util.ArrayList;
import java.util.List;
import java.util.concurrent.ForkJoinPool;
import java.util.function.Supplier;
import org.apache.hadoop.hbase.HBaseClassTestRule;
import org.apache.hadoop.hbase.testclassification.ClientTests;
import org.apache.hadoop.hbase.testclassification.LargeTests;
import org.junit.ClassRule;
import org.junit.experimental.categories.Category;
import org.junit.runner.RunWith;
import org.junit.runners.Parameterized;
import org.junit.runners.Parameterized.Parameter;
import org.junit.runners.Parameterized.Parameters;

@RunWith(Parameterized.class)
@Category({ LargeTests.class, ClientTests.class })
public class TestAsyncTableScanner extends AbstractTestAsyncTableScan {

  @ClassRule
  public static final HBaseClassTestRule CLASS_RULE =
      HBaseClassTestRule.forClass(TestAsyncTableScanner.class);

  @Parameter(0)
  public String tableType;

  @Parameter(1)
  public Supplier<AsyncTable<?>> getTable;

  @Parameter(2)
  public String scanType;

  @Parameter(3)
  public Supplier<Scan> scanCreator;

  @Parameters(name = "{index}: table={0}, scan={2}")
  public static List<Object[]> params() {
    return getTableAndScanCreatorParams();
  }

  @Override
  protected Scan createScan() {
    return scanCreator.get();
  }

  @Override
  protected List<Result> doScan(Scan scan) throws Exception {
    AsyncTable<?> table = ASYNC_CONN.getTable(TABLE_NAME, ForkJoinPool.commonPool());
    List<Result> results = new ArrayList<>();
    try (ResultScanner scanner = table.getScanner(scan)) {
      for (Result result; (result = scanner.next()) != null;) {
        results.add(result);
      }
    }
    if (scan.getBatch() > 0) {
      results = convertFromBatchResult(results);
    }
    return results;
  }
}