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.autorecovery;
  
  import static org.apache.bookkeeper.meta.MetadataDrivers.runFunctionWithLedgerManagerFactory;
  
  import com.beust.jcommander.Parameter;
  import com.google.common.util.concurrent.UncheckedExecutionException;
  import java.util.Iterator;
  import java.util.List;
  import java.util.concurrent.ExecutionException;
  import java.util.concurrent.atomic.AtomicInteger;
  import java.util.function.Predicate;
  import lombok.Setter;
  import lombok.experimental.Accessors;
  import org.apache.bookkeeper.conf.ServerConfiguration;
  import org.apache.bookkeeper.meta.LedgerUnderreplicationManager;
  import org.apache.bookkeeper.meta.UnderreplicatedLedger;
  import org.apache.bookkeeper.meta.exceptions.MetadataException;
  import org.apache.bookkeeper.replication.ReplicationException;
  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.LedgerIdFormatter;
  import org.apache.commons.lang3.StringUtils;
  import org.slf4j.Logger;
  import org.slf4j.LoggerFactory;
  
  /**
   * Command to listing under replicated ledgers.
   */
  public class ListUnderReplicatedCommand extends BookieCommand<ListUnderReplicatedCommand.LURFlags> {
  
      static final Logger LOG = LoggerFactory.getLogger(ListUnderReplicatedCommand.class);
  
      private static final String NAME = "listunderreplicated";
      private static final String DESC = "List ledgers marked as underreplicated, with oprional options to specify "
                                         + "missingreplica (BookieId) and to exclude missingreplica.";
      private static final String DEFAULT = "";
  
      private LedgerIdFormatter ledgerIdFormatter;
  
      public ListUnderReplicatedCommand() {
          this(new LURFlags());
      }
  
      public ListUnderReplicatedCommand(LedgerIdFormatter ledgerIdFormatter) {
          this();
          this.ledgerIdFormatter = ledgerIdFormatter;
      }
  
      private ListUnderReplicatedCommand(LURFlags flags) {
          super(CliSpec.<LURFlags>newBuilder()
                    .withName(NAME)
                    .withDescription(DESC)
                    .withFlags(flags)
                    .build());
      }
  
      /**
       * Flags for list under replicated command.
       */
      @Accessors(fluent = true)
      @Setter
      public static class LURFlags extends CliFlags{
  
          @Parameter(names = { "-pmr", "--printmissingreplica" }, description = "Whether to print missingreplicas list?")
          private boolean printMissingReplica;
  
          @Parameter(names = { "-prw",
              "--printreplicationworkerid" }, description = "Whether wo print replicationworkerid?")
          private boolean printReplicationWorkerId;
  
          @Parameter(names = { "-mr", "--missingreplica" }, description = "Bookie Id of missing replica")
          private String missingReplica = DEFAULT;
  
          @Parameter(names = { "-emr", "--excludingmissingreplica" }, description = "Bookie Id of missing replica to "
                                                                                    + "ignore")
          private String excludingMissingReplica = DEFAULT;
  
          @Parameter(names =  {"-l", "--ledgeridformatter"}, description = "Set ledger id formatter")
          private String ledgerIdFormatter = DEFAULT;
  
          @Parameter(names = {"-c", "--onlydisplayledgercount"},
              description = "Only display underreplicated ledger count")
          private boolean onlyDisplayLedgerCount;
      }
  
      @Override
      public boolean apply(ServerConfiguration conf, LURFlags cmdFlags) {
          if (!cmdFlags.ledgerIdFormatter.equals(DEFAULT) && ledgerIdFormatter == null) {
              ledgerIdFormatter = LedgerIdFormatter.newLedgerIdFormatter(cmdFlags.ledgerIdFormatter, conf);
          } else if (ledgerIdFormatter == null) {
              ledgerIdFormatter = LedgerIdFormatter.newLedgerIdFormatter(conf);
          }
          try {
              return handler(conf, cmdFlags);
          } catch (Exception e) {
              throw new UncheckedExecutionException(e.getMessage(), e);
          }
      }
  
      public boolean handler(ServerConfiguration bkConf, LURFlags flags) throws MetadataException, ExecutionException {
          final String includingBookieId = flags.missingReplica;
          final String excludingBookieId = flags.excludingMissingReplica;
          final boolean printMissingReplica = flags.printMissingReplica;
          final boolean printReplicationWorkerId = flags.printReplicationWorkerId;
          final boolean onlyDisplayLedgerCount = flags.onlyDisplayLedgerCount;
  
          final Predicate<List<String>> predicate;
          if (!StringUtils.isBlank(includingBookieId) && !StringUtils.isBlank(excludingBookieId)) {
              predicate = replicasList -> (replicasList.contains(includingBookieId)
                                           && !replicasList.contains(excludingBookieId));
          } else if (!StringUtils.isBlank(includingBookieId)) {
              predicate = replicasList -> replicasList.contains(includingBookieId);
          } else if (!StringUtils.isBlank(excludingBookieId)) {
              predicate = replicasList -> !replicasList.contains(excludingBookieId);
          } else {
              predicate = null;
          }
  
          AtomicInteger underReplicatedLedgerCount = new AtomicInteger(0);
          runFunctionWithLedgerManagerFactory(bkConf, mFactory -> {
              LedgerUnderreplicationManager underreplicationManager;
              try {
                  underreplicationManager = mFactory.newLedgerUnderreplicationManager();
              } catch (ReplicationException e) {
                  throw new UncheckedExecutionException("Failed to new ledger underreplicated manager", e);
              } catch (InterruptedException e) {
                  Thread.currentThread().interrupt();
                  throw new UncheckedExecutionException("Interrupted on newing ledger underreplicated manager", e);
              }
              Iterator<UnderreplicatedLedger> iter = underreplicationManager.listLedgersToRereplicate(predicate);
              while (iter.hasNext()) {
                  UnderreplicatedLedger underreplicatedLedger = iter.next();
                  underReplicatedLedgerCount.incrementAndGet();
                  if (onlyDisplayLedgerCount) {
                      continue;
                  }
  
                  long urLedgerId = underreplicatedLedger.getLedgerId();
                  LOG.info("{}", ledgerIdFormatter.formatLedgerId(urLedgerId));
                  long ctime = underreplicatedLedger.getCtime();
                  if (ctime != UnderreplicatedLedger.UNASSIGNED_CTIME) {
                      LOG.info("\tCtime : {}", ctime);
                  }
                  if (printMissingReplica) {
                      underreplicatedLedger.getReplicaList().forEach((missingReplica) -> {
                          LOG.info("\tMissingReplica : {}", missingReplica);
                      });
                  }
                  if (printReplicationWorkerId) {
                      try {
                          String replicationWorkerId = underreplicationManager
                                                           .getReplicationWorkerIdRereplicatingLedger(urLedgerId);
                          if (replicationWorkerId != null) {
                              LOG.info("\tReplicationWorkerId : {}", replicationWorkerId);
                          }
                      } catch (ReplicationException.UnavailableException e) {
                          LOG.error("Failed to get ReplicationWorkerId rereplicating ledger {} -- {}", urLedgerId,
                                    e.getMessage());
                      }
                  }
              }
  
              LOG.info("Under replicated ledger count: {}", underReplicatedLedgerCount.get());
              return null;
          });
          return true;
      }
  
  }
  
  