content: /*
   * 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.bookkeeper.tools.cli.commands.client;
  
  import com.beust.jcommander.Parameter;
  import com.google.common.util.concurrent.UncheckedExecutionException;
  import java.io.IOException;
  import lombok.Setter;
  import lombok.experimental.Accessors;
  import org.apache.bookkeeper.client.BKException;
  import org.apache.bookkeeper.client.BookKeeper;
  import org.apache.bookkeeper.conf.ClientConfiguration;
  import org.apache.bookkeeper.conf.ServerConfiguration;
  import org.apache.bookkeeper.tools.cli.helpers.BookieCommand;
  import org.apache.bookkeeper.tools.framework.CliFlags;
  import org.apache.bookkeeper.tools.framework.CliSpec;
  import org.apache.bookkeeper.util.IOUtils;
  import org.apache.bookkeeper.util.LedgerIdFormatter;
  import org.slf4j.Logger;
  import org.slf4j.LoggerFactory;
  
  /**
   * Command to delete a given ledger.
   */
  public class DeleteLedgerCommand extends BookieCommand<DeleteLedgerCommand.DeleteLedgerFlags> {
  
      private static final String NAME = "delete";
      private static final String DESC = "Delete a ledger.";
      private static final String DEFAULT = "";
      private static final Logger LOG = LoggerFactory.getLogger(DeleteLedgerCommand.class);
  
      private LedgerIdFormatter ledgerIdFormatter;
  
      public DeleteLedgerCommand() {
          this(new DeleteLedgerFlags());
      }
  
      public DeleteLedgerCommand(LedgerIdFormatter ledgerIdFormatter) {
          this(new DeleteLedgerFlags());
          this.ledgerIdFormatter = ledgerIdFormatter;
      }
  
      private DeleteLedgerCommand(DeleteLedgerFlags flags) {
          super(CliSpec.<DeleteLedgerCommand.DeleteLedgerFlags>newBuilder()
                    .withName(NAME)
                    .withDescription(DESC)
                    .withFlags(flags)
                    .build());
      }
  
      /**
       * Flags for delete ledger command.
       */
      @Accessors(fluent = true)
      @Setter
      public static class DeleteLedgerFlags extends CliFlags {
  
          @Parameter(names = { "-l", "--ledgerid" }, description = "Ledger ID", required = true)
          private long ledgerId;
  
          @Parameter(names = { "-f", "--force" }, description = "Whether to force delete the Ledger without prompt..?")
          private boolean force;
  
          @Parameter(names = { "-lf", "--ledgeridformatter" }, description = "Set ledger id formatter")
          private String ledgerIdFormatter = DEFAULT;
  
      }
  
      @Override
      public boolean apply(ServerConfiguration conf, DeleteLedgerFlags cmdFlags) {
          initLedgerIdFormatter(conf, cmdFlags);
          try {
              return deleteLedger(conf, cmdFlags);
          } catch (Exception e) {
              throw new UncheckedExecutionException(e.getMessage(), e);
          }
      }
  
      private void initLedgerIdFormatter(ServerConfiguration conf, DeleteLedgerFlags flags) {
          if (null == ledgerIdFormatter && !flags.ledgerIdFormatter.equals(DEFAULT)) {
              this.ledgerIdFormatter = LedgerIdFormatter.newLedgerIdFormatter(flags.ledgerIdFormatter, conf);
          } else if (null == ledgerIdFormatter && flags.ledgerIdFormatter.equals(DEFAULT)) {
              this.ledgerIdFormatter = LedgerIdFormatter.newLedgerIdFormatter(conf);
          }
      }
  
      private boolean deleteLedger(ServerConfiguration conf, DeleteLedgerFlags flags)
          throws IOException, BKException, InterruptedException {
  
          if (flags.ledgerId < 0) {
              LOG.error("Ledger id error.");
              return false;
          }
  
          boolean confirm = false;
          if (!flags.force) {
              confirm = IOUtils.confirmPrompt(
                  "Are your sure to delete Ledger : " + ledgerIdFormatter.formatLedgerId(flags.ledgerId) + "?");
          }
  
          BookKeeper bookKeeper = null;
          try {
              if (flags.force || confirm) {
                  ClientConfiguration configuration = new ClientConfiguration();
                  configuration.addConfiguration(conf);
                  bookKeeper = new BookKeeper(configuration);
                  bookKeeper.deleteLedger(flags.ledgerId);
              }
          } finally {
              if (bookKeeper != null) {
                  bookKeeper.close();
              }
          }
  
          return true;
      }
  }
  