pinot-core/src/test/java/org/apache/pinot/core/util/CrcUtilsTest.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.pinot.core.util;

import java.io.File;
import java.util.concurrent.TimeUnit;
import org.apache.commons.io.FileUtils;
import org.apache.pinot.segment.local.indexsegment.immutable.ImmutableSegmentLoader;
import org.apache.pinot.segment.local.segment.creator.SegmentTestUtils;
import org.apache.pinot.segment.local.segment.creator.impl.SegmentCreationDriverFactory;
import org.apache.pinot.segment.local.utils.CrcUtils;
import org.apache.pinot.segment.spi.IndexSegment;
import org.apache.pinot.segment.spi.SegmentMetadata;
import org.apache.pinot.segment.spi.creator.SegmentGeneratorConfig;
import org.apache.pinot.segment.spi.creator.SegmentIndexCreationDriver;
import org.apache.pinot.spi.utils.ReadMode;
import org.apache.pinot.util.TestUtils;
import org.testng.Assert;
import org.testng.annotations.Test;


/**
 * Dec 4, 2014
 */

public class CrcUtilsTest {

  private static final String AVRO_DATA = "data/test_data-mv.avro";
  private static final File INDEX_DIR = new File("/tmp/testingCrc");

  @Test
  public void test1()
      throws Exception {
    if (INDEX_DIR.exists()) {
      FileUtils.deleteQuietly(INDEX_DIR);
    }

    final CrcUtils u1 = CrcUtils.forAllFilesInFolder(new File(makeSegmentAndReturnPath()));
    final long crc1 = u1.computeCrc();
    final String md51 = u1.computeMD5();

    FileUtils.deleteQuietly(INDEX_DIR);

    final CrcUtils u2 = CrcUtils.forAllFilesInFolder(new File(makeSegmentAndReturnPath()));
    final long crc2 = u2.computeCrc();
    final String md52 = u2.computeMD5();

    Assert.assertEquals(crc1, crc2);
    Assert.assertEquals(md51, md52);

    FileUtils.deleteQuietly(INDEX_DIR);

    final IndexSegment segment = ImmutableSegmentLoader.load(new File(makeSegmentAndReturnPath()), ReadMode.mmap);
    final SegmentMetadata m = segment.getSegmentMetadata();

    FileUtils.deleteQuietly(INDEX_DIR);
  }

  private String makeSegmentAndReturnPath()
      throws Exception {
    final String filePath = TestUtils.getFileFromResourceUrl(CrcUtils.class.getClassLoader().getResource(AVRO_DATA));

    final SegmentGeneratorConfig config = SegmentTestUtils
        .getSegmentGenSpecWithSchemAndProjectedColumns(new File(filePath), INDEX_DIR, "daysSinceEpoch", TimeUnit.DAYS,
            "testTable");
    config.setSegmentNamePostfix("1");
    final SegmentIndexCreationDriver driver = SegmentCreationDriverFactory.get(null);
    driver.init(config);
    driver.build();

    return new File(INDEX_DIR, driver.getSegmentName()).getAbsolutePath();
  }
}