| /* |
| * 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.client; |
| |
| import io.netty.util.HashedWheelTimer; |
| import java.util.List; |
| import java.util.Map; |
| import java.util.Set; |
| |
| import org.apache.bookkeeper.client.BKException.BKNotEnoughBookiesException; |
| import org.apache.bookkeeper.net.BookieSocketAddress; |
| import org.apache.bookkeeper.net.DNSToSwitchMapping; |
| import org.apache.bookkeeper.net.Node; |
| import org.apache.bookkeeper.stats.StatsLogger; |
| |
| /** |
| * A placement policy implementation use rack information for placing ensembles. |
| * |
| * @see EnsemblePlacementPolicy |
| */ |
| public class RackawareEnsemblePlacementPolicy extends RackawareEnsemblePlacementPolicyImpl |
| implements ITopologyAwareEnsemblePlacementPolicy<TopologyAwareEnsemblePlacementPolicy.BookieNode> { |
| RackawareEnsemblePlacementPolicyImpl slave = null; |
| |
| public RackawareEnsemblePlacementPolicy() { |
| super(); |
| } |
| |
| public RackawareEnsemblePlacementPolicy(boolean enforceDurability) { |
| super(enforceDurability); |
| } |
| |
| @Override |
| protected RackawareEnsemblePlacementPolicy initialize(DNSToSwitchMapping dnsResolver, |
| HashedWheelTimer timer, |
| boolean reorderReadsRandom, |
| int stabilizePeriodSeconds, |
| int reorderThresholdPendingRequests, |
| boolean isWeighted, |
| int maxWeightMultiple, |
| int minNumRacksPerWriteQuorum, |
| boolean enforceMinNumRacksPerWriteQuorum, |
| boolean ignoreLocalNodeInPlacementPolicy, |
| StatsLogger statsLogger) { |
| if (stabilizePeriodSeconds > 0) { |
| super.initialize(dnsResolver, timer, reorderReadsRandom, 0, reorderThresholdPendingRequests, isWeighted, |
| maxWeightMultiple, minNumRacksPerWriteQuorum, enforceMinNumRacksPerWriteQuorum, |
| ignoreLocalNodeInPlacementPolicy, statsLogger); |
| slave = new RackawareEnsemblePlacementPolicyImpl(enforceDurability); |
| slave.initialize(dnsResolver, timer, reorderReadsRandom, stabilizePeriodSeconds, |
| reorderThresholdPendingRequests, isWeighted, maxWeightMultiple, minNumRacksPerWriteQuorum, |
| enforceMinNumRacksPerWriteQuorum, ignoreLocalNodeInPlacementPolicy, statsLogger); |
| } else { |
| super.initialize(dnsResolver, timer, reorderReadsRandom, stabilizePeriodSeconds, |
| reorderThresholdPendingRequests, isWeighted, maxWeightMultiple, minNumRacksPerWriteQuorum, |
| enforceMinNumRacksPerWriteQuorum, ignoreLocalNodeInPlacementPolicy, statsLogger); |
| slave = null; |
| } |
| return this; |
| } |
| |
| @Override |
| public void uninitalize() { |
| super.uninitalize(); |
| if (null != slave) { |
| slave.uninitalize(); |
| } |
| } |
| |
| @Override |
| public Set<BookieSocketAddress> onClusterChanged(Set<BookieSocketAddress> writableBookies, |
| Set<BookieSocketAddress> readOnlyBookies) { |
| Set<BookieSocketAddress> deadBookies = super.onClusterChanged(writableBookies, readOnlyBookies); |
| if (null != slave) { |
| deadBookies = slave.onClusterChanged(writableBookies, readOnlyBookies); |
| } |
| return deadBookies; |
| } |
| |
| @Override |
| public PlacementResult<List<BookieSocketAddress>> newEnsemble(int ensembleSize, int writeQuorumSize, |
| int ackQuorumSize, Map<String, byte[]> customMetadata, Set<BookieSocketAddress> excludeBookies) |
| throws BKException.BKNotEnoughBookiesException { |
| try { |
| return super.newEnsemble(ensembleSize, writeQuorumSize, ackQuorumSize, customMetadata, excludeBookies); |
| } catch (BKException.BKNotEnoughBookiesException bnebe) { |
| if (slave == null) { |
| throw bnebe; |
| } else { |
| return slave.newEnsemble(ensembleSize, writeQuorumSize, ackQuorumSize, customMetadata, excludeBookies); |
| } |
| } |
| } |
| |
| @Override |
| public PlacementResult<BookieSocketAddress> replaceBookie(int ensembleSize, int writeQuorumSize, int ackQuorumSize, |
| Map<String, byte[]> customMetadata, List<BookieSocketAddress> currentEnsemble, |
| BookieSocketAddress bookieToReplace, Set<BookieSocketAddress> excludeBookies) |
| throws BKException.BKNotEnoughBookiesException { |
| try { |
| return super.replaceBookie(ensembleSize, writeQuorumSize, ackQuorumSize, customMetadata, |
| currentEnsemble, bookieToReplace, excludeBookies); |
| } catch (BKException.BKNotEnoughBookiesException bnebe) { |
| if (slave == null) { |
| throw bnebe; |
| } else { |
| return slave.replaceBookie(ensembleSize, writeQuorumSize, ackQuorumSize, customMetadata, |
| currentEnsemble, bookieToReplace, excludeBookies); |
| } |
| } |
| } |
| |
| @Override |
| public DistributionSchedule.WriteSet reorderReadSequence( |
| List<BookieSocketAddress> ensemble, |
| BookiesHealthInfo bookiesHealthInfo, |
| DistributionSchedule.WriteSet writeSet) { |
| return super.reorderReadSequence(ensemble, bookiesHealthInfo, |
| writeSet); |
| } |
| |
| @Override |
| public DistributionSchedule.WriteSet reorderReadLACSequence( |
| List<BookieSocketAddress> ensemble, |
| BookiesHealthInfo bookiesHealthInfo, |
| DistributionSchedule.WriteSet writeSet) { |
| return super.reorderReadLACSequence(ensemble, bookiesHealthInfo, |
| writeSet); |
| } |
| |
| @Override |
| public PlacementResult<List<BookieSocketAddress>> newEnsemble(int ensembleSize, |
| int writeQuorumSize, |
| int ackQuorumSize, |
| Set<BookieSocketAddress> excludeBookies, |
| Ensemble<BookieNode> parentEnsemble, |
| Predicate<BookieNode> parentPredicate) |
| throws BKException.BKNotEnoughBookiesException { |
| try { |
| return super.newEnsemble( |
| ensembleSize, |
| writeQuorumSize, |
| ackQuorumSize, |
| excludeBookies, |
| parentEnsemble, |
| parentPredicate); |
| } catch (BKException.BKNotEnoughBookiesException bnebe) { |
| if (slave == null) { |
| throw bnebe; |
| } else { |
| return slave.newEnsemble(ensembleSize, writeQuorumSize, ackQuorumSize, |
| excludeBookies, parentEnsemble, parentPredicate); |
| } |
| } |
| } |
| |
| @Override |
| public BookieNode selectFromNetworkLocation( |
| String networkLoc, |
| Set<Node> excludeBookies, |
| Predicate<BookieNode> predicate, |
| Ensemble<BookieNode> ensemble, |
| boolean fallbackToRandom) |
| throws BKException.BKNotEnoughBookiesException { |
| try { |
| return super.selectFromNetworkLocation(networkLoc, excludeBookies, predicate, ensemble, |
| fallbackToRandom); |
| } catch (BKException.BKNotEnoughBookiesException bnebe) { |
| if (slave == null) { |
| throw bnebe; |
| } else { |
| return slave.selectFromNetworkLocation(networkLoc, excludeBookies, predicate, ensemble, |
| fallbackToRandom); |
| } |
| } |
| } |
| |
| @Override |
| public BookieNode selectFromNetworkLocation( |
| Set<String> excludeRacks, |
| Set<Node> excludeBookies, |
| Predicate<BookieNode> predicate, |
| Ensemble<BookieNode> ensemble, |
| boolean fallbackToRandom) |
| throws BKException.BKNotEnoughBookiesException { |
| try { |
| return super.selectFromNetworkLocation(excludeRacks, excludeBookies, predicate, ensemble, fallbackToRandom); |
| } catch (BKException.BKNotEnoughBookiesException bnebe) { |
| if (slave == null) { |
| throw bnebe; |
| } else { |
| return slave.selectFromNetworkLocation(excludeRacks, excludeBookies, predicate, ensemble, |
| fallbackToRandom); |
| } |
| } |
| } |
| |
| @Override |
| public BookieNode selectFromNetworkLocation( |
| String networkLoc, |
| Set<String> excludeRacks, |
| Set<Node> excludeBookies, |
| Predicate<BookieNode> predicate, |
| Ensemble<BookieNode> ensemble, |
| boolean fallbackToRandom) |
| throws BKNotEnoughBookiesException { |
| try { |
| return super.selectFromNetworkLocation(networkLoc, excludeRacks, excludeBookies, predicate, ensemble, |
| fallbackToRandom); |
| } catch (BKException.BKNotEnoughBookiesException bnebe) { |
| if (slave == null) { |
| throw bnebe; |
| } else { |
| return slave.selectFromNetworkLocation(networkLoc, excludeRacks, excludeBookies, predicate, ensemble, |
| fallbackToRandom); |
| } |
| } |
| } |
| |
| @Override |
| public void handleBookiesThatLeft(Set<BookieSocketAddress> leftBookies) { |
| super.handleBookiesThatLeft(leftBookies); |
| if (null != slave) { |
| slave.handleBookiesThatLeft(leftBookies); |
| } |
| } |
| |
| @Override |
| public void handleBookiesThatJoined(Set<BookieSocketAddress> joinedBookies) { |
| super.handleBookiesThatJoined(joinedBookies); |
| if (null != slave) { |
| slave.handleBookiesThatJoined(joinedBookies); |
| } |
| } |
| } |