mladjan-gadzic commented on code in PR #5724: URL: https://github.com/apache/ozone/pull/5724#discussion_r1447593472
########## hadoop-ozone/tools/src/main/java/org/apache/hadoop/ozone/debug/ContainerKeyScanner.java: ########## @@ -0,0 +1,421 @@ +/* + * 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.hadoop.ozone.debug; + +import com.google.common.collect.Sets; +import com.google.gson.Gson; +import com.google.gson.GsonBuilder; +import org.apache.commons.lang3.tuple.Pair; +import org.apache.hadoop.hdds.cli.SubcommandWithParent; +import org.apache.hadoop.hdds.conf.OzoneConfiguration; +import org.apache.hadoop.hdds.utils.db.DBColumnFamilyDefinition; +import org.apache.hadoop.hdds.utils.db.DBDefinition; +import org.apache.hadoop.hdds.utils.db.managed.ManagedRocksDB; +import org.apache.hadoop.hdds.utils.db.managed.ManagedRocksIterator; +import org.apache.hadoop.ozone.OzoneConsts; +import org.apache.hadoop.ozone.om.helpers.OmDirectoryInfo; +import org.apache.hadoop.ozone.om.helpers.OmKeyInfo; +import org.apache.hadoop.ozone.om.helpers.OmKeyLocationInfo; +import org.apache.hadoop.ozone.om.helpers.OmKeyLocationInfoGroup; +import org.kohsuke.MetaInfServices; +import org.rocksdb.ColumnFamilyDescriptor; +import org.rocksdb.ColumnFamilyHandle; +import org.rocksdb.RocksDBException; +import picocli.CommandLine; + +import java.io.IOException; +import java.io.PrintWriter; +import java.nio.file.Path; +import java.nio.file.Paths; +import java.util.ArrayList; +import java.util.Arrays; +import java.util.Collections; +import java.util.HashMap; +import java.util.HashSet; +import java.util.Iterator; +import java.util.LinkedList; +import java.util.List; +import java.util.Map; +import java.util.Objects; +import java.util.Optional; +import java.util.Queue; +import java.util.Set; +import java.util.concurrent.Callable; +import java.util.stream.Collectors; + +import static java.nio.charset.StandardCharsets.UTF_8; +import static org.apache.hadoop.ozone.OzoneConsts.OM_KEY_PREFIX; +import static org.apache.hadoop.ozone.OzoneConsts.ROOT_PATH; + +/** + * Parser for a list of container IDs, to scan for keys. + */ +@CommandLine.Command( + name = "ckscanner", + description = "Find keys that reference a container" +) +@MetaInfServices(SubcommandWithParent.class) +public class ContainerKeyScanner implements Callable<Void>, + SubcommandWithParent { + + private static final String FILE_TABLE = "fileTable"; + private static final String KEY_TABLE = "keyTable"; + private static final String DIRECTORY_TABLE = "directoryTable"; + + @CommandLine.Spec + private static CommandLine.Model.CommandSpec spec; + + @CommandLine.ParentCommand + private RDBParser parent; + + @CommandLine.Option(names = {"-ids", "--container-ids"}, + split = ",", + paramLabel = "containerIDs", + required = true, + description = "Set of container IDs to be used for getting all " + + "their keys. Example-usage: 1,11,2 (Separated by ',').") + private Set<Long> containerIds; + + private static Map<String, OmDirectoryInfo> directoryTable; + private static boolean isDirTableLoaded = false; + + @Override + public Void call() throws Exception { + ContainerKeyInfoWrapper containerKeyInfoWrapper = + scanDBForContainerKeys(parent.getDbPath()); + + printOutput(containerKeyInfoWrapper); + + closeStdChannels(); + + return null; + } + + private void closeStdChannels() { + out().close(); + err().close(); + } + + private Map<String, OmDirectoryInfo> getDirectoryTableData(String dbPath) + throws RocksDBException, IOException { + Map<String, OmDirectoryInfo> directoryTableData = new HashMap<>(); + + // Get all tables from RocksDB + List<ColumnFamilyDescriptor> columnFamilyDescriptors = + RocksDBUtils.getColumnFamilyDescriptors(dbPath); + final List<ColumnFamilyHandle> columnFamilyHandles = new ArrayList<>(); + + // Get all table handles + try (ManagedRocksDB db = ManagedRocksDB.openReadOnly(dbPath, + columnFamilyDescriptors, columnFamilyHandles)) { + dbPath = removeTrailingSlashIfNeeded(dbPath); + DBDefinition dbDefinition = DBDefinitionFactory.getDefinition( + Paths.get(dbPath), new OzoneConfiguration()); + if (dbDefinition == null) { + throw new IllegalStateException("Incorrect DB Path"); + } + + // Get directory table + DBColumnFamilyDefinition<?, ?> columnFamilyDefinition = + dbDefinition.getColumnFamily(DIRECTORY_TABLE); + if (columnFamilyDefinition == null) { + throw new IllegalStateException( + "Table with name" + DIRECTORY_TABLE + " not found"); + } + + // Get directory table handle + ColumnFamilyHandle columnFamilyHandle = getColumnFamilyHandle( + columnFamilyDefinition.getName().getBytes(UTF_8), + columnFamilyHandles); + if (columnFamilyHandle == null) { + throw new IllegalStateException("columnFamilyHandle is null"); + } + + // Get iterator for directory table + try (ManagedRocksIterator iterator = new ManagedRocksIterator( + db.get().newIterator(columnFamilyHandle))) { + iterator.get().seekToFirst(); + while (iterator.get().isValid()) { + directoryTableData.put(new String(iterator.get().key(), UTF_8), + ((OmDirectoryInfo) columnFamilyDefinition.getValueCodec() + .fromPersistedFormat(iterator.get().value()))); + iterator.get().next(); + } + } + } + + return directoryTableData; + } + + @Override + public Class<?> getParentType() { + return RDBParser.class; + } + + private static PrintWriter err() { + return spec.commandLine().getErr(); + } + + private static PrintWriter out() { + return spec.commandLine().getOut(); + } + + public Map<Long, Path> getAbsolutePathForObjectIDs( + long bucketId, String prefix, Optional<Set<Long>> dirObjIds) { + // Root of a bucket would always have the + // key as /volumeId/bucketId/bucketId/ + if (!dirObjIds.isPresent() || dirObjIds.get().isEmpty()) { + return Collections.emptyMap(); + } + Set<Long> objIds = Sets.newHashSet(dirObjIds.get()); + Map<Long, Path> objectIdPathMap = new HashMap<>(); + Queue<Pair<Long, Path>> objectIdPathVals = new LinkedList<>(); + Pair<Long, Path> root = Pair.of(bucketId, ROOT_PATH); + objectIdPathVals.add(root); + addToPathMap(root, objIds, objectIdPathMap); + + while (!objectIdPathVals.isEmpty() && !objIds.isEmpty()) { + Pair<Long, Path> parentPair = objectIdPathVals.poll(); + String subDir = prefix + parentPair.getKey() + OM_KEY_PREFIX; + + Iterator<String> subDirIterator = + directoryTable.keySet().stream() + .filter(k -> k.startsWith(subDir)) + .collect(Collectors.toList()).iterator(); + while (!objIds.isEmpty() && subDirIterator.hasNext()) { + OmDirectoryInfo childDir = + directoryTable.get(subDirIterator.next()); + Pair<Long, Path> pathVal = Pair.of(childDir.getObjectID(), + parentPair.getValue().resolve(childDir.getName())); + addToPathMap(pathVal, objIds, objectIdPathMap); + objectIdPathVals.add(pathVal); + } + } + // Invalid directory objectId which does not exist in the given bucket. + if (!objIds.isEmpty()) { + throw new IllegalArgumentException( + "Dir object Ids required but not found in bucket: " + objIds); + } + return objectIdPathMap; + } + + private void addToPathMap(Pair<Long, Path> objectIDPath, + Set<Long> dirObjIds, Map<Long, Path> pathMap) { + if (dirObjIds.contains(objectIDPath.getKey())) { + pathMap.put(objectIDPath.getKey(), objectIDPath.getValue()); + dirObjIds.remove(objectIDPath.getKey()); + } + } + + private ContainerKeyInfoWrapper scanDBForContainerKeys(String dbPath) + throws RocksDBException, IOException { + List<ContainerKeyInfo> containerKeyInfos = new ArrayList<>(); + + List<ColumnFamilyDescriptor> columnFamilyDescriptors = + RocksDBUtils.getColumnFamilyDescriptors(dbPath); + final List<ColumnFamilyHandle> columnFamilyHandles = new ArrayList<>(); + long keysProcessed = 0; + + try (ManagedRocksDB db = ManagedRocksDB.openReadOnly(dbPath, + columnFamilyDescriptors, columnFamilyHandles)) { + dbPath = removeTrailingSlashIfNeeded(dbPath); + DBDefinition dbDefinition = DBDefinitionFactory.getDefinition( Review Comment: Removed. -- This is an automated message from the Apache Git Service. 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