| /* |
| * 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.bookie; |
| |
| import com.google.common.collect.Lists; |
| import io.netty.util.HashedWheelTimer; |
| import java.net.UnknownHostException; |
| import java.util.Collections; |
| import java.util.List; |
| import java.util.Map; |
| import java.util.Optional; |
| import java.util.Set; |
| import org.apache.bookkeeper.client.BKException.BKNotEnoughBookiesException; |
| import org.apache.bookkeeper.client.BookieInfoReader.BookieInfo; |
| import org.apache.bookkeeper.client.BookiesHealthInfo; |
| import org.apache.bookkeeper.client.DistributionSchedule; |
| import org.apache.bookkeeper.client.EnsemblePlacementPolicy; |
| import org.apache.bookkeeper.conf.ClientConfiguration; |
| import org.apache.bookkeeper.conf.ServerConfiguration; |
| import org.apache.bookkeeper.feature.FeatureProvider; |
| import org.apache.bookkeeper.net.BookieId; |
| import org.apache.bookkeeper.net.DNSToSwitchMapping; |
| import org.apache.bookkeeper.proto.BookieAddressResolver; |
| import org.apache.bookkeeper.stats.StatsLogger; |
| import org.slf4j.Logger; |
| import org.slf4j.LoggerFactory; |
| |
| /** |
| * Special ensemble placement policy that always return local bookie. Only works with ledgers with ensemble=1. |
| * |
| * @see EnsemblePlacementPolicy |
| */ |
| public class LocalBookieEnsemblePlacementPolicy implements EnsemblePlacementPolicy { |
| |
| static final Logger LOG = LoggerFactory.getLogger(LocalBookieEnsemblePlacementPolicy.class); |
| |
| private BookieId bookieAddress; |
| |
| @Override |
| public EnsemblePlacementPolicy initialize(ClientConfiguration conf, |
| Optional<DNSToSwitchMapping> optionalDnsResolver, |
| HashedWheelTimer hashedWheelTimer, |
| FeatureProvider featureProvider, |
| StatsLogger statsLogger, BookieAddressResolver bookieAddressResolver) { |
| // Configuration will have already the bookie configuration inserted |
| ServerConfiguration serverConf = new ServerConfiguration(); |
| serverConf.addConfiguration(conf); |
| |
| try { |
| bookieAddress = BookieImpl.getBookieId(serverConf); |
| } catch (UnknownHostException e) { |
| LOG.warn("Unable to get bookie address", e); |
| throw new RuntimeException(e); |
| } |
| return this; |
| } |
| |
| @Override |
| public void uninitalize() { |
| // do nothing |
| } |
| |
| @Override |
| public Set<BookieId> onClusterChanged(Set<BookieId> writableBookies, |
| Set<BookieId> readOnlyBookies) { |
| return Collections.emptySet(); |
| } |
| |
| @Override |
| public PlacementResult<BookieId> replaceBookie(int ensembleSize, int writeQuorumSize, int ackQuorumSize, |
| java.util.Map<String, byte[]> customMetadata, List<BookieId> currentEnsemble, |
| BookieId bookieToReplace, Set<BookieId> excludeBookies) |
| throws BKNotEnoughBookiesException { |
| throw new BKNotEnoughBookiesException(); |
| } |
| |
| @Override |
| public void registerSlowBookie(BookieId bookieSocketAddress, long entryId) { |
| return; |
| } |
| |
| @Override |
| public DistributionSchedule.WriteSet reorderReadSequence( |
| List<BookieId> ensemble, |
| BookiesHealthInfo bookiesHealthInfo, |
| DistributionSchedule.WriteSet writeSet) { |
| return null; |
| } |
| |
| @Override |
| public DistributionSchedule.WriteSet reorderReadLACSequence( |
| List<BookieId> ensemble, |
| BookiesHealthInfo bookiesHealthInfo, |
| DistributionSchedule.WriteSet writeSet) { |
| return null; |
| } |
| |
| @Override |
| public PlacementResult<List<BookieId>> newEnsemble(int ensembleSize, int writeQuorumSize, |
| int ackQuorumSize, java.util.Map<String, byte[]> customMetadata, Set<BookieId> excludeBookies) |
| throws BKNotEnoughBookiesException { |
| if (ensembleSize > 1) { |
| throw new IllegalArgumentException("Local ensemble policy can only return 1 bookie"); |
| } |
| |
| return PlacementResult.of(Lists.newArrayList(bookieAddress), PlacementPolicyAdherence.MEETS_STRICT); |
| } |
| |
| @Override |
| public void updateBookieInfo(Map<BookieId, BookieInfo> bookieToFreeSpaceMap) { |
| return; |
| } |
| |
| @Override |
| public PlacementPolicyAdherence isEnsembleAdheringToPlacementPolicy(List<BookieId> ensembleList, |
| int writeQuorumSize, int ackQuorumSize) { |
| return PlacementPolicyAdherence.MEETS_STRICT; |
| } |
| } |