flink/src/test/java/org/apache/iceberg/flink/TestFlinkHiveCatalog.java

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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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 * Unless required by applicable law or agreed to in writing,
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 * specific language governing permissions and limitations
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package org.apache.iceberg.flink;

import java.io.File;
import java.io.FileOutputStream;
import java.io.IOException;
import java.nio.file.Files;
import java.nio.file.Path;
import java.util.Map;
import org.apache.hadoop.conf.Configuration;
import org.apache.hadoop.hive.conf.HiveConf;
import org.apache.iceberg.CatalogProperties;
import org.apache.iceberg.relocated.com.google.common.collect.Maps;
import org.junit.Assert;
import org.junit.Rule;
import org.junit.Test;
import org.junit.rules.TemporaryFolder;

public class TestFlinkHiveCatalog extends FlinkTestBase {

  @Rule
  public TemporaryFolder tempFolder = new TemporaryFolder();

  @Test
  public void testCreateCatalogWithWarehouseLocation() throws IOException {
    Map<String, String> props = Maps.newHashMap();
    props.put("type", "iceberg");
    props.put(FlinkCatalogFactory.ICEBERG_CATALOG_TYPE, "hive");
    props.put(CatalogProperties.URI, FlinkCatalogTestBase.getURI(hiveConf));

    File warehouseDir = tempFolder.newFolder();
    props.put(CatalogProperties.WAREHOUSE_LOCATION, "file://" + warehouseDir.getAbsolutePath());

    checkSQLQuery(props, warehouseDir);
  }

  @Test
  public void testCreateCatalogWithHiveConfDir() throws IOException {
    // Dump the hive conf into a local file.
    File hiveConfDir = tempFolder.newFolder();
    File hiveSiteXML = new File(hiveConfDir, "hive-site.xml");
    File warehouseDir = tempFolder.newFolder();
    try (FileOutputStream fos = new FileOutputStream(hiveSiteXML)) {
      Configuration newConf = new Configuration(hiveConf);
      // Set another new directory which is different with the hive metastore's warehouse path.
      newConf.set(HiveConf.ConfVars.METASTOREWAREHOUSE.varname, "file://" + warehouseDir.getAbsolutePath());
      newConf.writeXml(fos);
    }
    Assert.assertTrue("hive-site.xml should be created now.", Files.exists(hiveSiteXML.toPath()));

    // Construct the catalog attributions.
    Map<String, String> props = Maps.newHashMap();
    props.put("type", "iceberg");
    props.put(FlinkCatalogFactory.ICEBERG_CATALOG_TYPE, "hive");
    props.put(CatalogProperties.URI, FlinkCatalogTestBase.getURI(hiveConf));
    // Set the 'hive-conf-dir' instead of 'warehouse'
    props.put(FlinkCatalogFactory.HIVE_CONF_DIR, hiveConfDir.getAbsolutePath());

    checkSQLQuery(props, warehouseDir);
  }

  private void checkSQLQuery(Map<String, String> catalogProperties, File warehouseDir) throws IOException {
    sql("CREATE CATALOG test_catalog WITH %s", FlinkCatalogTestBase.toWithClause(catalogProperties));
    sql("USE CATALOG test_catalog");
    sql("CREATE DATABASE test_db");
    sql("USE test_db");
    sql("CREATE TABLE test_table(c1 INT, c2 STRING)");
    sql("INSERT INTO test_table SELECT 1, 'a'");

    Path databasePath = warehouseDir.toPath().resolve("test_db.db");
    Assert.assertTrue("Database path should exist", Files.exists(databasePath));

    Path tablePath = databasePath.resolve("test_table");
    Assert.assertTrue("Table path should exist", Files.exists(tablePath));

    Path dataPath = tablePath.resolve("data");
    Assert.assertTrue("Table data path should exist", Files.exists(dataPath));
    Assert.assertEquals("Should have a .crc file and a .parquet file", 2, Files.list(dataPath).count());

    sql("DROP TABLE test_table");
    sql("DROP DATABASE test_db");
    sql("DROP CATALOG test_catalog");
  }
}