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.bookie;
  
  import com.google.common.util.concurrent.UncheckedExecutionException;
  import java.io.IOException;
  import java.util.List;
  import org.apache.bookkeeper.bookie.BookieImpl;
  import org.apache.bookkeeper.bookie.LedgerStorage;
  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.slf4j.Logger;
  import org.slf4j.LoggerFactory;
  
  /**
   * Command to check local storage for inconsistencies.
   */
  public class LocalConsistencyCheckCommand extends BookieCommand<CliFlags> {
  
      static final Logger LOG = LoggerFactory.getLogger(LocalConsistencyCheckCommand.class);
  
      private static final String NAME = "localconsistencycheck";
      private static final String DESC = "Validate Ledger Storage internal metadata";
  
      public LocalConsistencyCheckCommand() {
          super(CliSpec.newBuilder()
                       .withName(NAME)
                       .withDescription(DESC)
                       .withFlags(new CliFlags())
                       .build());
      }
  
      @Override
      public boolean apply(ServerConfiguration conf, CliFlags cmdFlags) {
          try {
              return check(conf);
          } catch (IOException e) {
              throw new UncheckedExecutionException(e.getMessage(), e);
          }
      }
  
      private boolean check(ServerConfiguration conf) throws IOException {
          LOG.info("=== Performing local consistency check ===");
          ServerConfiguration serverConfiguration = new ServerConfiguration(conf);
          LedgerStorage ledgerStorage = BookieImpl.mountLedgerStorageOffline(serverConfiguration, null);
          List<LedgerStorage.DetectedInconsistency> errors = ledgerStorage.localConsistencyCheck(
              java.util.Optional.empty());
          if (errors.size() > 0) {
              LOG.info("=== Check returned errors: ===");
              for (LedgerStorage.DetectedInconsistency error : errors) {
                  LOG.error("Ledger {}, entry {}: ", error.getLedgerId(), error.getEntryId(), error.getException());
              }
              return false;
          } else {
              LOG.info("=== Check passed ===");
              return true;
          }
      }
  }
  