| /** |
| * 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 |
| * <p> |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * <p> |
| * 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.hadoop.ozone.om.helpers; |
| |
| import org.apache.hadoop.ozone.protocol.proto.OzoneManagerProtocolProtos; |
| import org.apache.hadoop.ozone.protocol.proto.OzoneManagerProtocolProtos.KeyLocationList; |
| |
| import java.util.ArrayList; |
| import java.util.HashMap; |
| import java.util.List; |
| import java.util.Map; |
| import java.util.stream.Collectors; |
| |
| /** |
| * A list of key locations. This class represents one single version of the |
| * blocks of a key. |
| */ |
| public class OmKeyLocationInfoGroup { |
| private final long version; |
| private final Map<Long, List<OmKeyLocationInfo>> locationVersionMap; |
| |
| public OmKeyLocationInfoGroup(long version, |
| List<OmKeyLocationInfo> locations) { |
| this.version = version; |
| locationVersionMap = new HashMap<>(); |
| for (OmKeyLocationInfo info : locations) { |
| locationVersionMap |
| .computeIfAbsent(info.getCreateVersion(), v -> new ArrayList<>()) |
| .add(info); |
| } |
| //prevent NPE |
| this.locationVersionMap.putIfAbsent(version, new ArrayList<>()); |
| } |
| |
| public OmKeyLocationInfoGroup(long version, |
| Map<Long, List<OmKeyLocationInfo>> locations) { |
| this.version = version; |
| this.locationVersionMap = locations; |
| //prevent NPE |
| this.locationVersionMap.putIfAbsent(version, new ArrayList<>()); |
| } |
| |
| /** |
| * Return only the blocks that are created in the most recent version. |
| * |
| * @return the list of blocks that are created in the latest version. |
| */ |
| public List<OmKeyLocationInfo> getBlocksLatestVersionOnly() { |
| return new ArrayList<>(locationVersionMap.get(version)); |
| } |
| |
| public long getVersion() { |
| return version; |
| } |
| |
| public List<OmKeyLocationInfo> getLocationList() { |
| return locationVersionMap.values().stream().flatMap(List::stream) |
| .collect(Collectors.toList()); |
| } |
| |
| public long getLocationListCount() { |
| return locationVersionMap.values().stream().mapToLong(List::size).sum(); |
| } |
| |
| public List<OmKeyLocationInfo> getLocationList(Long versionToFetch) { |
| return new ArrayList<>(locationVersionMap.get(versionToFetch)); |
| } |
| |
| public KeyLocationList getProtobuf(boolean ignorePipeline) { |
| KeyLocationList.Builder builder = KeyLocationList.newBuilder() |
| .setVersion(version); |
| List<OzoneManagerProtocolProtos.KeyLocation> keyLocationList = |
| new ArrayList<>(); |
| for (List<OmKeyLocationInfo> locationList : locationVersionMap.values()) { |
| for (OmKeyLocationInfo keyInfo : locationList) { |
| keyLocationList.add(ignorePipeline ? |
| keyInfo.getCompactProtobuf() : keyInfo.getProtobuf()); |
| } |
| } |
| return builder.addAllKeyLocations(keyLocationList).build(); |
| } |
| |
| public static OmKeyLocationInfoGroup getFromProtobuf( |
| KeyLocationList keyLocationList) { |
| return new OmKeyLocationInfoGroup( |
| keyLocationList.getVersion(), |
| keyLocationList.getKeyLocationsList().stream() |
| .map(OmKeyLocationInfo::getFromProtobuf) |
| .collect(Collectors.groupingBy(OmKeyLocationInfo::getCreateVersion)) |
| ); |
| } |
| |
| /** |
| * Given a new block location, generate a new version list based upon this |
| * one. |
| * |
| * @param newLocationList a list of new location to be added. |
| * @return newly generated OmKeyLocationInfoGroup |
| */ |
| OmKeyLocationInfoGroup generateNextVersion( |
| List<OmKeyLocationInfo> newLocationList) { |
| Map<Long, List<OmKeyLocationInfo>> newMap = |
| new HashMap<>(locationVersionMap); |
| newMap.put(version + 1, new ArrayList<>(newLocationList)); |
| return new OmKeyLocationInfoGroup(version + 1, newMap); |
| } |
| |
| void appendNewBlocks(List<OmKeyLocationInfo> newLocationList) { |
| List<OmKeyLocationInfo> locationList = locationVersionMap.get(version); |
| for (OmKeyLocationInfo info : newLocationList) { |
| info.setCreateVersion(version); |
| locationList.add(info); |
| } |
| } |
| |
| void removeBlocks(long versionToRemove){ |
| locationVersionMap.remove(versionToRemove); |
| } |
| |
| void addAll(long versionToAdd, List<OmKeyLocationInfo> locationInfoList) { |
| locationVersionMap.putIfAbsent(versionToAdd, new ArrayList<>()); |
| List<OmKeyLocationInfo> list = locationVersionMap.get(versionToAdd); |
| list.addAll(locationInfoList); |
| } |
| |
| @Override |
| public String toString() { |
| StringBuilder sb = new StringBuilder(); |
| sb.append("version:").append(version).append(" "); |
| for (List<OmKeyLocationInfo> kliList : locationVersionMap.values()) { |
| for(OmKeyLocationInfo kli: kliList) { |
| sb.append(kli.getLocalID()).append(" || "); |
| } |
| } |
| return sb.toString(); |
| } |
| } |