content: /*
   * The Alluxio Open Foundation licenses this work under the Apache License, version 2.0
   * (the "License"). You may not use this work except in compliance with the License, which is
   * available at www.apache.org/licenses/LICENSE-2.0
   *
   * This software is distributed on an "AS IS" basis, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND,
   * either express or implied, as more fully set forth in the License.
   *
   * See the NOTICE file distributed with this work for information regarding copyright ownership.
   */
  
  package alluxio.cli.table.command;
  
  import alluxio.cli.CommandUtils;
  import alluxio.cli.table.TableShellUtils;
  import alluxio.client.file.FileSystemContext;
  import alluxio.client.table.TableMasterClient;
  import alluxio.conf.AlluxioConfiguration;
  import alluxio.exception.status.AlluxioStatusException;
  import alluxio.exception.status.InvalidArgumentException;
  import alluxio.grpc.table.SyncStatus;
  
  import com.google.common.collect.Maps;
  import org.apache.commons.cli.CommandLine;
  import org.apache.commons.cli.Option;
  import org.apache.commons.cli.Options;
  import org.slf4j.Logger;
  import org.slf4j.LoggerFactory;
  
  import java.util.Properties;
  
  /**
   * A command which can be used to attach a UDB to the Alluxio master's table service.
   */
  public class AttachDatabaseCommand extends AbstractTableCommand {
    private static final Logger LOG = LoggerFactory.getLogger(AttachDatabaseCommand.class);
    private static final int PRINT_MAX_ERRORS = 10;
  
    private static final String COMMAND_NAME = "attachdb";
  
    private static final Option OPTION_OPTION = Option.builder("o")
        .longOpt("option")
        .required(false)
        .hasArg(true)
        .numberOfArgs(2)
        .argName("key=value")
        .valueSeparator('=')
        .desc("options associated with this database or UDB")
        .build();
    private static final Option DB_OPTION = Option.builder()
        .longOpt("db")
        .required(false)
        .hasArg(true)
        .numberOfArgs(1)
        .argName("alluxio db name")
        .desc("The name of the db in Alluxio. If unset, will use the udb db name.")
        .build();
    private static final Option IGNORE_SYNC_ERRORS_OPTION = Option.builder()
        .longOpt("ignore-sync-errors")
        .required(false)
        .hasArg(false)
        .desc("Ignores sync errors, and keeps the database attached.")
        .build();
  
    /**
     * Creates a new instance of {@link AttachDatabaseCommand}.
     *
     * @param conf alluxio configuration
     * @param client the table master client used to make RPCs
     * @param fsContext the filesystem of Alluxio
     */
    public AttachDatabaseCommand(AlluxioConfiguration conf, TableMasterClient client,
        FileSystemContext fsContext) {
      super(conf, client, fsContext);
    }
  
    @Override
    public Options getOptions() {
      return new Options()
          .addOption(OPTION_OPTION)
          .addOption(DB_OPTION)
          .addOption(IGNORE_SYNC_ERRORS_OPTION);
    }
  
    @Override
    public void validateArgs(CommandLine cl) throws InvalidArgumentException {
      CommandUtils.checkNumOfArgsEquals(this, cl, 3);
    }
  
    @Override
    public int run(CommandLine cl) throws AlluxioStatusException {
      String[] args = cl.getArgs();
      String udbType = args[0];
      String udbConnectionUri = args[1];
      String udbDbName = args[2];
      String dbName = udbDbName;
  
      if (cl.hasOption(DB_OPTION.getLongOpt())) {
        String optDbName = cl.getOptionValue(DB_OPTION.getLongOpt());
        if (optDbName != null && !optDbName.isEmpty()) {
          dbName = optDbName;
        }
      }
  
      Properties p = cl.getOptionProperties(OPTION_OPTION.getOpt());
      boolean ignoreSyncErrors = cl.hasOption(IGNORE_SYNC_ERRORS_OPTION.getLongOpt());
  
      SyncStatus status = mClient
          .attachDatabase(udbType, udbConnectionUri, udbDbName, dbName, Maps.fromProperties(p),
              ignoreSyncErrors);
      TableShellUtils.printSyncStatus(status, LOG, PRINT_MAX_ERRORS);
      if (!ignoreSyncErrors && status.getTablesErrorsCount() > 0) {
        System.out.println(String.format(
            "%nDatabase is not attached. To keep it attached even with errors, please re-run '%s' "
                + "with the '--%s' option.",
            COMMAND_NAME, IGNORE_SYNC_ERRORS_OPTION.getLongOpt()));
      }
      return 0;
    }
  
    @Override
    public String getCommandName() {
      return COMMAND_NAME;
    }
  
    @Override
    public String getDescription() {
      return "Attaches a database to the Alluxio catalog from an under DB";
    }
  
    @Override
    public String getUsage() {
      return "attachdb [-o|--option <key=value>] [--db <alluxio db name>] [--ignore-sync-errors] "
          + "<udb type> <udb connection uri> <udb db name>";
    }
  }
  