code: /*
   * Copyright (c) 2022 Airbyte, Inc., all rights reserved.
   */
  
  package io.airbyte.integrations.io.airbyte.integration_tests.sources;
  
  import static org.junit.jupiter.api.Assertions.assertEquals;
  
  import com.fasterxml.jackson.databind.JsonNode;
  import com.google.common.collect.ImmutableMap;
  import com.google.common.collect.Lists;
  import io.airbyte.commons.json.Jsons;
  import io.airbyte.commons.resources.MoreResources;
  import io.airbyte.db.factory.DataSourceFactory;
  import io.airbyte.db.factory.DatabaseDriver;
  import io.airbyte.db.jdbc.DefaultJdbcDatabase;
  import io.airbyte.db.jdbc.JdbcDatabase;
  import io.airbyte.db.jdbc.JdbcUtils;
  import io.airbyte.integrations.source.db2.Db2Source;
  import io.airbyte.integrations.standardtest.source.SourceAcceptanceTest;
  import io.airbyte.integrations.standardtest.source.TestDestinationEnv;
  import io.airbyte.protocol.models.AirbyteCatalog;
  import io.airbyte.protocol.models.AirbyteStream;
  import io.airbyte.protocol.models.CatalogHelpers;
  import io.airbyte.protocol.models.ConfiguredAirbyteCatalog;
  import io.airbyte.protocol.models.ConfiguredAirbyteStream;
  import io.airbyte.protocol.models.ConnectorSpecification;
  import io.airbyte.protocol.models.DestinationSyncMode;
  import io.airbyte.protocol.models.Field;
  import io.airbyte.protocol.models.JsonSchemaType;
  import io.airbyte.protocol.models.SyncMode;
  import java.io.IOException;
  import java.util.Collections;
  import java.util.HashMap;
  import java.util.List;
  import javax.sql.DataSource;
  import org.junit.jupiter.api.Test;
  import org.testcontainers.containers.Db2Container;
  
  public class Db2SourceAcceptanceTest extends SourceAcceptanceTest {
  
    private static final String SCHEMA_NAME = "SOURCE_INTEGRATION_TEST";
    private static final String LESS_PERMITTED_USER = "db2inst2";
    private static final String USER_WITH_OUT_PERMISSIONS = "db2inst3";
    private static final String STREAM_NAME1 = "ID_AND_NAME1";
    private static final String STREAM_NAME2 = "ID_AND_NAME2";
    private static final String STREAM_NAME3 = "ID_AND_NAME3";
  
    private Db2Container db;
    private JsonNode config;
    private DataSource dataSource;
  
    @Override
    protected String getImageName() {
      return "airbyte/source-db2:dev";
    }
  
    @Override
    protected ConnectorSpecification getSpec() throws Exception {
      return Jsons.deserialize(MoreResources.readResource("spec.json"), ConnectorSpecification.class);
    }
  
    @Override
    protected JsonNode getConfig() {
      return config;
    }
  
    private JsonNode getConfig(final String userName, final String password) {
      return Jsons.jsonNode(ImmutableMap.builder()
          .put(JdbcUtils.HOST_KEY, db.getHost())
          .put(JdbcUtils.PORT_KEY, db.getFirstMappedPort())
          .put("db", db.getDatabaseName())
          .put(JdbcUtils.USERNAME_KEY, userName)
          .put(JdbcUtils.PASSWORD_KEY, password)
          .put(JdbcUtils.ENCRYPTION_KEY, Jsons.jsonNode(ImmutableMap.builder()
              .put("encryption_method", "unencrypted")
              .build()))
          .build());
    }
  
    @Override
    protected ConfiguredAirbyteCatalog getConfiguredCatalog() throws Exception {
      return new ConfiguredAirbyteCatalog().withStreams(Lists.newArrayList(
          new ConfiguredAirbyteStream()
              .withSyncMode(SyncMode.INCREMENTAL)
              .withCursorField(Lists.newArrayList("ID"))
              .withDestinationSyncMode(DestinationSyncMode.APPEND)
              .withStream(CatalogHelpers.createAirbyteStream(
                  String.format("%s.%s", SCHEMA_NAME, STREAM_NAME1),
                  Field.of("ID", JsonSchemaType.NUMBER),
                  Field.of("NAME", JsonSchemaType.STRING))
                  .withSupportedSyncModes(
                      Lists.newArrayList(SyncMode.FULL_REFRESH, SyncMode.INCREMENTAL))),
          new ConfiguredAirbyteStream()
              .withSyncMode(SyncMode.FULL_REFRESH)
              .withDestinationSyncMode(DestinationSyncMode.OVERWRITE)
              .withStream(CatalogHelpers.createAirbyteStream(
                  String.format("%s.%s", SCHEMA_NAME, STREAM_NAME2),
                  Field.of("ID", JsonSchemaType.NUMBER),
                  Field.of("NAME", JsonSchemaType.STRING))
                  .withSupportedSyncModes(
                      Lists.newArrayList(SyncMode.FULL_REFRESH, SyncMode.INCREMENTAL)))));
    }
  
    @Override
    protected JsonNode getState() {
      return Jsons.jsonNode(new HashMap<>());
    }
  
    @Override
    protected void setupEnvironment(final TestDestinationEnv environment) throws Exception {
      db = new Db2Container("ibmcom/db2:11.5.5.0").acceptLicense();
      db.start();
  
      config = getConfig(db.getUsername(), db.getPassword());
  
      dataSource = DataSourceFactory.create(
          config.get(JdbcUtils.USERNAME_KEY).asText(),
          config.get(JdbcUtils.PASSWORD_KEY).asText(),
          Db2Source.DRIVER_CLASS,
          String.format(DatabaseDriver.DB2.getUrlFormatString(),
              config.get(JdbcUtils.HOST_KEY).asText(),
              config.get(JdbcUtils.PORT_KEY).asInt(),
              config.get("db").asText()));
  
      try {
        final JdbcDatabase database = new DefaultJdbcDatabase(dataSource);
  
        final String createSchemaQuery = String.format("CREATE SCHEMA %s", SCHEMA_NAME);
        final String createTableQuery1 = String
            .format("CREATE TABLE %s.%s (ID INTEGER, NAME VARCHAR(200))", SCHEMA_NAME, STREAM_NAME1);
        final String createTableQuery2 = String
            .format("CREATE TABLE %s.%s (ID INTEGER, NAME VARCHAR(200))", SCHEMA_NAME, STREAM_NAME2);
        final String createTableQuery3 = String
            .format("CREATE TABLE %s.%s (ID INTEGER, NAME VARCHAR(200))", SCHEMA_NAME, STREAM_NAME3);
        final String insertIntoTableQuery1 = String
            .format("INSERT INTO %s.%s (ID, NAME) VALUES (1,'picard'),  (2, 'crusher'), (3, 'vash')",
                SCHEMA_NAME, STREAM_NAME1);
        final String insertIntoTableQuery2 = String
            .format("INSERT INTO %s.%s (ID, NAME) VALUES (1,'picard'),  (2, 'crusher'), (3, 'vash')",
                SCHEMA_NAME, STREAM_NAME2);
        final String grantSelect1 = String
            .format("GRANT SELECT ON TABLE %s.%s TO %s",
                SCHEMA_NAME, STREAM_NAME1, LESS_PERMITTED_USER);
        final String grantSelect2 = String
            .format("GRANT SELECT ON TABLE %s.%s TO %s",
                SCHEMA_NAME, STREAM_NAME3, LESS_PERMITTED_USER);
  
        database.execute(createSchemaQuery);
        database.execute(createTableQuery1);
        database.execute(createTableQuery2);
        database.execute(createTableQuery3);
        database.execute(insertIntoTableQuery1);
        database.execute(insertIntoTableQuery2);
        database.execute(grantSelect1);
        database.execute(grantSelect2);
      } finally {
        DataSourceFactory.close(dataSource);
      }
    }
  
    @Override
    protected void tearDown(final TestDestinationEnv testEnv) {
      db.close();
    }
  
    @Test
    public void testCheckPrivilegesForUserWithLessPerm() throws Exception {
      createUser(LESS_PERMITTED_USER);
      final JsonNode config = getConfig(LESS_PERMITTED_USER, JdbcUtils.PASSWORD_KEY);
  
      final List<String> actualNamesWithPermission = getActualNamesWithPermission(config);
      final List<String> expected = List.of(STREAM_NAME3, STREAM_NAME1);
      assertEquals(expected.size(), actualNamesWithPermission.size());
      assertEquals(expected, actualNamesWithPermission);
    }
  
    @Test
    public void testCheckPrivilegesForUserWithoutPerm() throws Exception {
      createUser(USER_WITH_OUT_PERMISSIONS);
  
      final JsonNode config = getConfig(USER_WITH_OUT_PERMISSIONS, JdbcUtils.PASSWORD_KEY);
  
      final List<String> actualNamesWithPermission = getActualNamesWithPermission(config);
      final List<String> expected = Collections.emptyList();
      assertEquals(0, actualNamesWithPermission.size());
      assertEquals(expected, actualNamesWithPermission);
    }
  
    private void createUser(final String lessPermittedUser) throws IOException, InterruptedException {
      final String encryptedPassword = db.execInContainer("openssl", "passwd", JdbcUtils.PASSWORD_KEY).getStdout().replaceAll("\n", "");
      db.execInContainer("useradd", lessPermittedUser, "-p", encryptedPassword);
    }
  
    private List<String> getActualNamesWithPermission(final JsonNode config) throws Exception {
      final AirbyteCatalog airbyteCatalog = new Db2Source().discover(config);
      return airbyteCatalog
          .getStreams()
          .stream()
          .map(AirbyteStream::getName)
          .toList();
    }
  
  }
  