| /** |
| * 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.hdfs; |
| |
| import static org.apache.hadoop.hdfs.DFSConfigKeys.DFS_ADMIN; |
| import static org.apache.hadoop.hdfs.DFSConfigKeys.DFS_CLIENT_HTTPS_NEED_AUTH_DEFAULT; |
| import static org.apache.hadoop.hdfs.DFSConfigKeys.DFS_CLIENT_HTTPS_NEED_AUTH_KEY; |
| import static org.apache.hadoop.hdfs.DFSConfigKeys.DFS_HA_NAMENODE_ID_KEY; |
| import static org.apache.hadoop.hdfs.DFSConfigKeys.DFS_NAMENODE_BACKUP_ADDRESS_KEY; |
| import static org.apache.hadoop.hdfs.DFSConfigKeys.DFS_NAMENODE_HTTPS_ADDRESS_DEFAULT; |
| import static org.apache.hadoop.hdfs.DFSConfigKeys.DFS_NAMENODE_HTTPS_ADDRESS_KEY; |
| import static org.apache.hadoop.hdfs.DFSConfigKeys.DFS_NAMENODE_HTTP_ADDRESS_DEFAULT; |
| import static org.apache.hadoop.hdfs.DFSConfigKeys.DFS_NAMENODE_HTTP_ADDRESS_KEY; |
| import static org.apache.hadoop.hdfs.DFSConfigKeys.DFS_NAMENODE_LIFELINE_RPC_ADDRESS_KEY; |
| import static org.apache.hadoop.hdfs.DFSConfigKeys.DFS_NAMENODE_RPC_ADDRESS_KEY; |
| import static org.apache.hadoop.hdfs.DFSConfigKeys.DFS_NAMENODE_SECONDARY_HTTP_ADDRESS_KEY; |
| import static org.apache.hadoop.hdfs.DFSConfigKeys.DFS_NAMENODE_SERVICE_RPC_ADDRESS_KEY; |
| import static org.apache.hadoop.hdfs.DFSConfigKeys.DFS_NAMENODE_SHARED_EDITS_DIR_KEY; |
| import static org.apache.hadoop.hdfs.DFSConfigKeys.DFS_NAMESERVICE_ID; |
| import static org.apache.hadoop.hdfs.DFSConfigKeys.DFS_SERVER_HTTPS_KEYPASSWORD_KEY; |
| import static org.apache.hadoop.hdfs.DFSConfigKeys.DFS_SERVER_HTTPS_KEYSTORE_PASSWORD_KEY; |
| import static org.apache.hadoop.hdfs.DFSConfigKeys.DFS_SERVER_HTTPS_TRUSTSTORE_PASSWORD_KEY; |
| |
| import java.io.ByteArrayInputStream; |
| import java.io.DataInputStream; |
| import java.io.IOException; |
| import java.io.PrintStream; |
| import java.net.InetAddress; |
| import java.net.InetSocketAddress; |
| import java.net.URI; |
| import java.net.URISyntaxException; |
| import java.net.UnknownHostException; |
| |
| import java.security.SecureRandom; |
| import java.util.Arrays; |
| import java.util.Collection; |
| import java.util.Comparator; |
| import java.util.Date; |
| import java.util.EnumSet; |
| import java.util.HashSet; |
| import java.util.LinkedHashSet; |
| import java.util.List; |
| import java.util.Map; |
| import java.util.Set; |
| import java.util.SortedSet; |
| |
| import org.apache.commons.cli.CommandLine; |
| import org.apache.commons.cli.CommandLineParser; |
| import org.apache.commons.cli.Option; |
| import org.apache.commons.cli.Options; |
| import org.apache.commons.cli.ParseException; |
| import org.apache.commons.cli.PosixParser; |
| import org.apache.commons.lang3.StringUtils; |
| import org.apache.hadoop.fs.ParentNotDirectoryException; |
| import org.apache.hadoop.fs.UnresolvedLinkException; |
| import org.apache.hadoop.hdfs.server.namenode.FSDirectory; |
| import org.apache.hadoop.hdfs.server.namenode.INodesInPath; |
| import org.apache.hadoop.ipc.ProtobufRpcEngine; |
| import org.apache.hadoop.security.AccessControlException; |
| import org.apache.hadoop.util.Lists; |
| import org.apache.hadoop.util.Sets; |
| import org.slf4j.Logger; |
| import org.slf4j.LoggerFactory; |
| import org.apache.hadoop.HadoopIllegalArgumentException; |
| import org.apache.hadoop.classification.InterfaceAudience; |
| import org.apache.hadoop.conf.Configuration; |
| import org.apache.hadoop.crypto.key.KeyProvider; |
| import org.apache.hadoop.crypto.key.KeyProviderCryptoExtension; |
| import org.apache.hadoop.fs.FileSystem; |
| import org.apache.hadoop.fs.Path; |
| import org.apache.hadoop.hdfs.protocol.DatanodeInfo; |
| import org.apache.hadoop.hdfs.protocol.HdfsConstants; |
| import org.apache.hadoop.hdfs.protocol.HdfsFileStatus; |
| import org.apache.hadoop.hdfs.security.token.delegation.DelegationTokenIdentifier; |
| import org.apache.hadoop.hdfs.server.common.HdfsServerConstants; |
| import org.apache.hadoop.hdfs.server.common.Util; |
| import org.apache.hadoop.hdfs.server.namenode.NameNode; |
| import org.apache.hadoop.hdfs.web.AuthFilterInitializer; |
| import org.apache.hadoop.http.HttpConfig; |
| import org.apache.hadoop.http.HttpServer2; |
| import org.apache.hadoop.ipc.ProtobufRpcEngine2; |
| import org.apache.hadoop.ipc.RPC; |
| import org.apache.hadoop.net.NetUtils; |
| import org.apache.hadoop.security.AuthenticationFilterInitializer; |
| import org.apache.hadoop.security.SecurityUtil; |
| import org.apache.hadoop.security.UserGroupInformation; |
| import org.apache.hadoop.security.authentication.server.ProxyUserAuthenticationFilterInitializer; |
| import org.apache.hadoop.security.authorize.AccessControlList; |
| import org.apache.hadoop.security.token.Token; |
| import org.apache.hadoop.util.ToolRunner; |
| |
| import org.apache.hadoop.thirdparty.com.google.common.annotations.VisibleForTesting; |
| import org.apache.hadoop.thirdparty.com.google.common.base.Joiner; |
| import org.apache.hadoop.thirdparty.com.google.common.base.Preconditions; |
| import org.apache.hadoop.thirdparty.protobuf.BlockingService; |
| |
| @InterfaceAudience.Private |
| public class DFSUtil { |
| public static final Logger LOG = |
| LoggerFactory.getLogger(DFSUtil.class.getName()); |
| |
| private DFSUtil() { /* Hidden constructor */ } |
| |
| private static final ThreadLocal<SecureRandom> SECURE_RANDOM = new ThreadLocal<SecureRandom>() { |
| @Override |
| protected SecureRandom initialValue() { |
| return new SecureRandom(); |
| } |
| }; |
| |
| /** @return a pseudo secure random number generator. */ |
| public static SecureRandom getSecureRandom() { |
| return SECURE_RANDOM.get(); |
| } |
| |
| /** |
| * Comparator for sorting DataNodeInfo[] based on |
| * decommissioned and entering_maintenance states. |
| */ |
| public static class ServiceComparator implements Comparator<DatanodeInfo> { |
| @Override |
| public int compare(DatanodeInfo a, DatanodeInfo b) { |
| // Decommissioned nodes will still be moved to the end of the list |
| if (a.isDecommissioned()) { |
| return b.isDecommissioned() ? 0 : 1; |
| } else if (b.isDecommissioned()) { |
| return -1; |
| } |
| |
| // ENTERING_MAINTENANCE nodes should be after live nodes. |
| if (a.isEnteringMaintenance()) { |
| return b.isEnteringMaintenance() ? 0 : 1; |
| } else if (b.isEnteringMaintenance()) { |
| return -1; |
| } else { |
| return 0; |
| } |
| } |
| } |
| |
| /** |
| * Comparator for sorting DataNodeInfo[] based on |
| * slow, stale, entering_maintenance and decommissioned states. |
| * Order: live {@literal ->} slow {@literal ->} stale {@literal ->} |
| * entering_maintenance {@literal ->} decommissioned |
| */ |
| @InterfaceAudience.Private |
| public static class StaleAndSlowComparator extends ServiceComparator { |
| private final boolean avoidStaleDataNodesForRead; |
| private final long staleInterval; |
| private final boolean avoidSlowDataNodesForRead; |
| private final Set<String> slowNodesUuidSet; |
| |
| /** |
| * Constructor of ServiceAndStaleComparator |
| * @param avoidStaleDataNodesForRead |
| * Whether or not to avoid using stale DataNodes for reading. |
| * @param interval |
| * The time interval for marking datanodes as stale is passed from |
| * outside, since the interval may be changed dynamically. |
| * @param avoidSlowDataNodesForRead |
| * Whether or not to avoid using slow DataNodes for reading. |
| * @param slowNodesUuidSet |
| * Slow DataNodes UUID set. |
| */ |
| public StaleAndSlowComparator( |
| boolean avoidStaleDataNodesForRead, long interval, |
| boolean avoidSlowDataNodesForRead, Set<String> slowNodesUuidSet) { |
| this.avoidStaleDataNodesForRead = avoidStaleDataNodesForRead; |
| this.staleInterval = interval; |
| this.avoidSlowDataNodesForRead = avoidSlowDataNodesForRead; |
| this.slowNodesUuidSet = slowNodesUuidSet; |
| } |
| |
| @Override |
| public int compare(DatanodeInfo a, DatanodeInfo b) { |
| int ret = super.compare(a, b); |
| if (ret != 0) { |
| return ret; |
| } |
| |
| // Stale nodes will be moved behind the normal nodes |
| if (avoidStaleDataNodesForRead) { |
| boolean aStale = a.isStale(staleInterval); |
| boolean bStale = b.isStale(staleInterval); |
| ret = aStale == bStale ? 0 : (aStale ? 1 : -1); |
| if (ret != 0) { |
| return ret; |
| } |
| } |
| |
| // Slow nodes will be moved behind the normal nodes |
| if (avoidSlowDataNodesForRead) { |
| boolean aSlow = slowNodesUuidSet.contains(a.getDatanodeUuid()); |
| boolean bSlow = slowNodesUuidSet.contains(b.getDatanodeUuid()); |
| ret = aSlow == bSlow ? 0 : (aSlow ? 1 : -1); |
| } |
| return ret; |
| } |
| } |
| |
| /** |
| * Address matcher for matching an address to local address |
| */ |
| static final AddressMatcher LOCAL_ADDRESS_MATCHER = new AddressMatcher() { |
| @Override |
| public boolean match(InetSocketAddress s) { |
| return NetUtils.isLocalAddress(s.getAddress()); |
| }; |
| }; |
| |
| /** |
| * Whether the pathname is valid. Currently prohibits relative paths, |
| * names which contain a ":" or "//", or other non-canonical paths. |
| */ |
| public static boolean isValidName(String src) { |
| return DFSUtilClient.isValidName(src); |
| } |
| |
| /** |
| * Checks if a string is a valid path component. For instance, components |
| * cannot contain a ":" or "/", and cannot be equal to a reserved component |
| * like ".snapshot". |
| * <p> |
| * The primary use of this method is for validating paths when loading the |
| * FSImage. During normal NN operation, paths are sometimes allowed to |
| * contain reserved components. |
| * |
| * @return If component is valid |
| */ |
| public static boolean isValidNameForComponent(String component) { |
| if (component.equals(".") || |
| component.equals("..") || |
| component.indexOf(":") >= 0 || |
| component.indexOf("/") >= 0) { |
| return false; |
| } |
| return !isReservedPathComponent(component); |
| } |
| |
| |
| /** |
| * Returns if the component is reserved. |
| * |
| * <p> |
| * Note that some components are only reserved under certain directories, e.g. |
| * "/.reserved" is reserved, while "/hadoop/.reserved" is not. |
| * @return true, if the component is reserved |
| */ |
| public static boolean isReservedPathComponent(String component) { |
| for (String reserved : HdfsServerConstants.RESERVED_PATH_COMPONENTS) { |
| if (component.equals(reserved)) { |
| return true; |
| } |
| } |
| return false; |
| } |
| |
| /** |
| * Converts a byte array to a string using UTF8 encoding. |
| */ |
| public static String bytes2String(byte[] bytes) { |
| return bytes2String(bytes, 0, bytes.length); |
| } |
| |
| /** |
| * Decode a specific range of bytes of the given byte array to a string |
| * using UTF8. |
| * |
| * @param bytes The bytes to be decoded into characters |
| * @param offset The index of the first byte to decode |
| * @param length The number of bytes to decode |
| * @return The decoded string |
| */ |
| public static String bytes2String(byte[] bytes, int offset, int length) { |
| return DFSUtilClient.bytes2String(bytes, 0, bytes.length); |
| } |
| |
| /** |
| * Converts a string to a byte array using UTF8 encoding. |
| */ |
| public static byte[] string2Bytes(String str) { |
| return DFSUtilClient.string2Bytes(str); |
| } |
| |
| /** |
| * Given a list of path components returns a path as a UTF8 String |
| */ |
| public static String byteArray2PathString(final byte[][] components, |
| final int offset, final int length) { |
| // specifically not using StringBuilder to more efficiently build |
| // string w/o excessive byte[] copies and charset conversions. |
| final int range = offset + length; |
| Preconditions.checkPositionIndexes(offset, range, components.length); |
| if (length == 0) { |
| return ""; |
| } |
| // absolute paths start with either null or empty byte[] |
| byte[] firstComponent = components[offset]; |
| boolean isAbsolute = (offset == 0 && |
| (firstComponent == null || firstComponent.length == 0)); |
| if (offset == 0 && length == 1) { |
| return isAbsolute ? Path.SEPARATOR : bytes2String(firstComponent); |
| } |
| // compute length of full byte[], seed with 1st component and delimiters |
| int pos = isAbsolute ? 0 : firstComponent.length; |
| int size = pos + length - 1; |
| for (int i=offset + 1; i < range; i++) { |
| size += components[i].length; |
| } |
| final byte[] result = new byte[size]; |
| if (!isAbsolute) { |
| System.arraycopy(firstComponent, 0, result, 0, firstComponent.length); |
| } |
| // append remaining components as "/component". |
| for (int i=offset + 1; i < range; i++) { |
| result[pos++] = (byte)Path.SEPARATOR_CHAR; |
| int len = components[i].length; |
| System.arraycopy(components[i], 0, result, pos, len); |
| pos += len; |
| } |
| return bytes2String(result); |
| } |
| |
| public static String byteArray2PathString(byte[][] pathComponents) { |
| return byteArray2PathString(pathComponents, 0, pathComponents.length); |
| } |
| |
| /** |
| * Converts a list of path components into a path using Path.SEPARATOR. |
| * |
| * @param components Path components |
| * @return Combined path as a UTF-8 string |
| */ |
| public static String strings2PathString(String[] components) { |
| if (components.length == 0) { |
| return ""; |
| } |
| if (components.length == 1) { |
| if (components[0] == null || components[0].isEmpty()) { |
| return Path.SEPARATOR; |
| } |
| } |
| return Joiner.on(Path.SEPARATOR).join(components); |
| } |
| |
| /** Convert an object representing a path to a string. */ |
| public static String path2String(final Object path) { |
| return path == null? null |
| : path instanceof String? (String)path |
| : path instanceof byte[][]? byteArray2PathString((byte[][])path) |
| : path.toString(); |
| } |
| |
| /** |
| * Convert a UTF8 string to an array of byte arrays. |
| */ |
| public static byte[][] getPathComponents(String path) { |
| // avoid intermediate split to String[] |
| final byte[] bytes = string2Bytes(path); |
| return DFSUtilClient |
| .bytes2byteArray(bytes, bytes.length, (byte) Path.SEPARATOR_CHAR); |
| } |
| |
| /** |
| * Splits the array of bytes into array of arrays of bytes |
| * on byte separator |
| * @param bytes the array of bytes to split |
| * @param separator the delimiting byte |
| */ |
| public static byte[][] bytes2byteArray(byte[] bytes, byte separator) { |
| return bytes2byteArray(bytes, bytes.length, separator); |
| } |
| |
| /** |
| * Splits first len bytes in bytes to array of arrays of bytes |
| * on byte separator |
| * @param bytes the byte array to split |
| * @param len the number of bytes to split |
| * @param separator the delimiting byte |
| */ |
| public static byte[][] bytes2byteArray(byte[] bytes, int len, |
| byte separator) { |
| return DFSUtilClient.bytes2byteArray(bytes, len, separator); |
| } |
| |
| /** |
| * Return configuration key of format key.suffix1.suffix2...suffixN |
| */ |
| public static String addKeySuffixes(String key, String... suffixes) { |
| String keySuffix = DFSUtilClient.concatSuffixes(suffixes); |
| return DFSUtilClient.addSuffix(key, keySuffix); |
| } |
| |
| /** |
| * Get all of the RPC addresses of the individual NNs in a given nameservice. |
| * |
| * @param conf Configuration |
| * @param nsId the nameservice whose NNs addresses we want. |
| * @param defaultValue default address to return in case key is not found. |
| * @return A map from nnId {@literal ->} RPC address of each NN in the |
| * nameservice. |
| */ |
| public static Map<String, InetSocketAddress> getRpcAddressesForNameserviceId( |
| Configuration conf, String nsId, String defaultValue) { |
| return DFSUtilClient.getAddressesForNameserviceId(conf, nsId, defaultValue, |
| DFS_NAMENODE_RPC_ADDRESS_KEY); |
| } |
| |
| /** |
| * @return a collection of all configured NN Kerberos principals. |
| */ |
| public static Set<String> getAllNnPrincipals(Configuration conf) throws IOException { |
| Set<String> principals = new HashSet<String>(); |
| for (String nsId : DFSUtilClient.getNameServiceIds(conf)) { |
| if (HAUtil.isHAEnabled(conf, nsId)) { |
| for (String nnId : DFSUtilClient.getNameNodeIds(conf, nsId)) { |
| Configuration confForNn = new Configuration(conf); |
| NameNode.initializeGenericKeys(confForNn, nsId, nnId); |
| String principal = SecurityUtil.getServerPrincipal(confForNn |
| .get(DFSConfigKeys.DFS_NAMENODE_KERBEROS_PRINCIPAL_KEY), |
| DFSUtilClient.getNNAddress(confForNn).getHostName()); |
| principals.add(principal); |
| } |
| } else { |
| Configuration confForNn = new Configuration(conf); |
| NameNode.initializeGenericKeys(confForNn, nsId, null); |
| String principal = SecurityUtil.getServerPrincipal(confForNn |
| .get(DFSConfigKeys.DFS_NAMENODE_KERBEROS_PRINCIPAL_KEY), |
| DFSUtilClient.getNNAddress(confForNn).getHostName()); |
| principals.add(principal); |
| } |
| } |
| |
| return principals; |
| } |
| |
| /** |
| * Returns list of Journalnode addresses from the configuration. |
| * |
| * @param conf configuration |
| * @return list of journalnode host names |
| * @throws URISyntaxException |
| * @throws IOException |
| */ |
| public static Set<String> getJournalNodeAddresses( |
| Configuration conf) throws URISyntaxException, IOException { |
| Set<String> journalNodeList = new HashSet<>(); |
| String journalsUri = ""; |
| try { |
| journalsUri = conf.get(DFS_NAMENODE_SHARED_EDITS_DIR_KEY); |
| if (journalsUri == null) { |
| Collection<String> nameserviceIds = DFSUtilClient. |
| getNameServiceIds(conf); |
| for (String nsId : nameserviceIds) { |
| journalsUri = DFSUtilClient.getConfValue( |
| null, nsId, conf, DFS_NAMENODE_SHARED_EDITS_DIR_KEY); |
| if (journalsUri == null) { |
| Collection<String> nnIds = DFSUtilClient.getNameNodeIds(conf, nsId); |
| for (String nnId : nnIds) { |
| String suffix = DFSUtilClient.concatSuffixes(nsId, nnId); |
| journalsUri = DFSUtilClient.getConfValue( |
| null, suffix, conf, DFS_NAMENODE_SHARED_EDITS_DIR_KEY); |
| if (journalsUri == null || |
| !journalsUri.startsWith("qjournal://")) { |
| return journalNodeList; |
| } else { |
| LOG.warn(DFS_NAMENODE_SHARED_EDITS_DIR_KEY +" is to be " + |
| "configured as nameservice" + |
| " specific key(append it with nameserviceId), no need" + |
| " to append it with namenodeId"); |
| URI uri = new URI(journalsUri); |
| List<InetSocketAddress> socketAddresses = Util. |
| getAddressesList(uri); |
| for (InetSocketAddress is : socketAddresses) { |
| journalNodeList.add(is.getHostName()); |
| } |
| } |
| } |
| } else if (!journalsUri.startsWith("qjournal://")) { |
| return journalNodeList; |
| } else { |
| URI uri = new URI(journalsUri); |
| List<InetSocketAddress> socketAddresses = Util. |
| getAddressesList(uri); |
| for (InetSocketAddress is : socketAddresses) { |
| journalNodeList.add(is.getHostName()); |
| } |
| } |
| } |
| } else { |
| if (!journalsUri.startsWith("qjournal://")) { |
| return journalNodeList; |
| } else { |
| URI uri = new URI(journalsUri); |
| List<InetSocketAddress> socketAddresses = Util.getAddressesList(uri); |
| for (InetSocketAddress is : socketAddresses) { |
| journalNodeList.add(is.getHostName()); |
| } |
| } |
| } |
| } catch(UnknownHostException e) { |
| LOG.error("The conf property " + DFS_NAMENODE_SHARED_EDITS_DIR_KEY |
| + " is not properly set with correct journal node hostnames"); |
| throw new UnknownHostException(journalsUri); |
| } catch(URISyntaxException e) { |
| LOG.error("The conf property " + DFS_NAMENODE_SHARED_EDITS_DIR_KEY |
| + "is not set properly with correct journal node uri"); |
| throw new URISyntaxException(journalsUri, "The conf property " + |
| DFS_NAMENODE_SHARED_EDITS_DIR_KEY + "is not" + |
| " properly set with correct journal node uri"); |
| } |
| |
| return journalNodeList; |
| } |
| |
| /** |
| * Returns list of InetSocketAddress corresponding to backup node rpc |
| * addresses from the configuration. |
| * |
| * @param conf configuration |
| * @return list of InetSocketAddresses |
| * @throws IOException on error |
| */ |
| public static Map<String, Map<String, InetSocketAddress>> getBackupNodeAddresses( |
| Configuration conf) throws IOException { |
| Map<String, Map<String, InetSocketAddress>> addressList = DFSUtilClient.getAddresses( |
| conf, null, DFS_NAMENODE_BACKUP_ADDRESS_KEY); |
| if (addressList.isEmpty()) { |
| throw new IOException("Incorrect configuration: backup node address " |
| + DFS_NAMENODE_BACKUP_ADDRESS_KEY + " is not configured."); |
| } |
| return addressList; |
| } |
| |
| /** |
| * Returns list of InetSocketAddresses of corresponding to secondary namenode |
| * http addresses from the configuration. |
| * |
| * @param conf configuration |
| * @return list of InetSocketAddresses |
| * @throws IOException on error |
| */ |
| public static Map<String, Map<String, InetSocketAddress>> getSecondaryNameNodeAddresses( |
| Configuration conf) throws IOException { |
| Map<String, Map<String, InetSocketAddress>> addressList = DFSUtilClient.getAddresses( |
| conf, null, DFS_NAMENODE_SECONDARY_HTTP_ADDRESS_KEY); |
| if (addressList.isEmpty()) { |
| throw new IOException("Incorrect configuration: secondary namenode address " |
| + DFS_NAMENODE_SECONDARY_HTTP_ADDRESS_KEY + " is not configured."); |
| } |
| return addressList; |
| } |
| |
| /** |
| * Returns list of InetSocketAddresses corresponding to namenodes from the |
| * configuration. |
| * |
| * Returns namenode address specifically configured for datanodes (using |
| * service ports), if found. If not, regular RPC address configured for other |
| * clients is returned. |
| * |
| * @param conf configuration |
| * @return list of InetSocketAddress |
| * @throws IOException on error |
| */ |
| public static Map<String, Map<String, InetSocketAddress>> getNNServiceRpcAddresses( |
| Configuration conf) throws IOException { |
| // Use default address as fall back |
| String defaultAddress; |
| try { |
| defaultAddress = NetUtils.getHostPortString( |
| DFSUtilClient.getNNAddress(conf)); |
| } catch (IllegalArgumentException e) { |
| defaultAddress = null; |
| } |
| |
| Map<String, Map<String, InetSocketAddress>> addressList = |
| DFSUtilClient.getAddresses(conf, defaultAddress, |
| DFS_NAMENODE_SERVICE_RPC_ADDRESS_KEY, |
| DFS_NAMENODE_RPC_ADDRESS_KEY); |
| if (addressList.isEmpty()) { |
| throw new IOException("Incorrect configuration: namenode address " |
| + DFS_NAMENODE_SERVICE_RPC_ADDRESS_KEY + " or " |
| + DFS_NAMENODE_RPC_ADDRESS_KEY |
| + " is not configured."); |
| } |
| return addressList; |
| } |
| |
| /** |
| * Returns list of InetSocketAddresses corresponding to the namenode |
| * that manages this cluster. Note this is to be used by datanodes to get |
| * the list of namenode addresses to talk to. |
| * |
| * Returns namenode address specifically configured for datanodes (using |
| * service ports), if found. If not, regular RPC address configured for other |
| * clients is returned. |
| * |
| * @param conf configuration |
| * @return list of InetSocketAddress |
| * @throws IOException on error |
| */ |
| public static Map<String, Map<String, InetSocketAddress>> |
| getNNServiceRpcAddressesForCluster(Configuration conf) throws IOException { |
| // Use default address as fall back |
| String defaultAddress; |
| try { |
| defaultAddress = NetUtils.getHostPortString( |
| DFSUtilClient.getNNAddress(conf)); |
| } catch (IllegalArgumentException e) { |
| defaultAddress = null; |
| } |
| |
| Collection<String> parentNameServices = conf.getTrimmedStringCollection |
| (DFSConfigKeys.DFS_INTERNAL_NAMESERVICES_KEY); |
| |
| if (parentNameServices.isEmpty()) { |
| parentNameServices = conf.getTrimmedStringCollection |
| (DFSConfigKeys.DFS_NAMESERVICES); |
| } else { |
| // Ensure that the internal service is ineed in the list of all available |
| // nameservices. |
| Set<String> availableNameServices = Sets.newHashSet(conf |
| .getTrimmedStringCollection(DFSConfigKeys.DFS_NAMESERVICES)); |
| for (String nsId : parentNameServices) { |
| if (!availableNameServices.contains(nsId)) { |
| throw new IOException("Unknown nameservice: " + nsId); |
| } |
| } |
| } |
| |
| Map<String, Map<String, InetSocketAddress>> addressList = |
| DFSUtilClient.getAddressesForNsIds(conf, parentNameServices, |
| defaultAddress, |
| DFS_NAMENODE_SERVICE_RPC_ADDRESS_KEY, |
| DFS_NAMENODE_RPC_ADDRESS_KEY); |
| if (addressList.isEmpty()) { |
| throw new IOException("Incorrect configuration: namenode address " |
| + DFS_NAMENODE_SERVICE_RPC_ADDRESS_KEY + "." + parentNameServices |
| + " or " |
| + DFS_NAMENODE_RPC_ADDRESS_KEY + "." + parentNameServices |
| + " is not configured."); |
| } |
| return addressList; |
| } |
| |
| /** |
| * Returns list of InetSocketAddresses corresponding to lifeline RPC servers |
| * at namenodes from the configuration. |
| * |
| * @param conf configuration |
| * @return list of InetSocketAddress |
| * @throws IOException on error |
| */ |
| public static Map<String, Map<String, InetSocketAddress>> |
| getNNLifelineRpcAddressesForCluster(Configuration conf) |
| throws IOException { |
| |
| Collection<String> parentNameServices = conf.getTrimmedStringCollection( |
| DFSConfigKeys.DFS_INTERNAL_NAMESERVICES_KEY); |
| |
| if (parentNameServices.isEmpty()) { |
| parentNameServices = conf.getTrimmedStringCollection( |
| DFSConfigKeys.DFS_NAMESERVICES); |
| } else { |
| // Ensure that the internal service is indeed in the list of all available |
| // nameservices. |
| Set<String> availableNameServices = Sets.newHashSet(conf |
| .getTrimmedStringCollection(DFSConfigKeys.DFS_NAMESERVICES)); |
| for (String nsId : parentNameServices) { |
| if (!availableNameServices.contains(nsId)) { |
| throw new IOException("Unknown nameservice: " + nsId); |
| } |
| } |
| } |
| |
| return DFSUtilClient.getAddressesForNsIds(conf, parentNameServices, null, |
| DFS_NAMENODE_LIFELINE_RPC_ADDRESS_KEY); |
| } |
| |
| /** |
| * Map a logical namenode ID to its lifeline address. Use the given |
| * nameservice if specified, or the configured one if none is given. |
| * |
| * @param conf Configuration |
| * @param nsId which nameservice nnId is a part of, optional |
| * @param nnId the namenode ID to get the service addr for |
| * @return the lifeline addr, null if it could not be determined |
| */ |
| public static String getNamenodeLifelineAddr(final Configuration conf, |
| String nsId, String nnId) { |
| |
| if (nsId == null) { |
| nsId = getOnlyNameServiceIdOrNull(conf); |
| } |
| |
| String lifelineAddrKey = DFSUtilClient.concatSuffixes( |
| DFSConfigKeys.DFS_NAMENODE_LIFELINE_RPC_ADDRESS_KEY, nsId, nnId); |
| |
| return conf.get(lifelineAddrKey); |
| } |
| |
| /** |
| * Flatten the given map, as returned by other functions in this class, |
| * into a flat list of {@link ConfiguredNNAddress} instances. |
| */ |
| public static List<ConfiguredNNAddress> flattenAddressMap( |
| Map<String, Map<String, InetSocketAddress>> map) { |
| List<ConfiguredNNAddress> ret = Lists.newArrayList(); |
| |
| for (Map.Entry<String, Map<String, InetSocketAddress>> entry : |
| map.entrySet()) { |
| String nsId = entry.getKey(); |
| Map<String, InetSocketAddress> nnMap = entry.getValue(); |
| for (Map.Entry<String, InetSocketAddress> e2 : nnMap.entrySet()) { |
| String nnId = e2.getKey(); |
| InetSocketAddress addr = e2.getValue(); |
| |
| ret.add(new ConfiguredNNAddress(nsId, nnId, addr)); |
| } |
| } |
| return ret; |
| } |
| |
| /** |
| * Format the given map, as returned by other functions in this class, |
| * into a string suitable for debugging display. The format of this string |
| * should not be considered an interface, and is liable to change. |
| */ |
| public static String addressMapToString( |
| Map<String, Map<String, InetSocketAddress>> map) { |
| StringBuilder b = new StringBuilder(); |
| for (Map.Entry<String, Map<String, InetSocketAddress>> entry : |
| map.entrySet()) { |
| String nsId = entry.getKey(); |
| Map<String, InetSocketAddress> nnMap = entry.getValue(); |
| b.append("Nameservice <").append(nsId).append(">:").append("\n"); |
| for (Map.Entry<String, InetSocketAddress> e2 : nnMap.entrySet()) { |
| b.append(" NN ID ").append(e2.getKey()) |
| .append(" => ").append(e2.getValue()).append("\n"); |
| } |
| } |
| return b.toString(); |
| } |
| |
| public static String nnAddressesAsString(Configuration conf) { |
| Map<String, Map<String, InetSocketAddress>> addresses = |
| DFSUtilClient.getHaNnRpcAddresses(conf); |
| return addressMapToString(addresses); |
| } |
| |
| /** |
| * Represent one of the NameNodes configured in the cluster. |
| */ |
| public static class ConfiguredNNAddress { |
| private final String nameserviceId; |
| private final String namenodeId; |
| private final InetSocketAddress addr; |
| |
| private ConfiguredNNAddress(String nameserviceId, String namenodeId, |
| InetSocketAddress addr) { |
| this.nameserviceId = nameserviceId; |
| this.namenodeId = namenodeId; |
| this.addr = addr; |
| } |
| |
| public String getNameserviceId() { |
| return nameserviceId; |
| } |
| |
| public String getNamenodeId() { |
| return namenodeId; |
| } |
| |
| public InetSocketAddress getAddress() { |
| return addr; |
| } |
| |
| @Override |
| public String toString() { |
| return "ConfiguredNNAddress[nsId=" + nameserviceId + ";" + |
| "nnId=" + namenodeId + ";addr=" + addr + "]"; |
| } |
| } |
| |
| /** @return Internal name services specified in the conf. */ |
| static Collection<String> getInternalNameServices(Configuration conf) { |
| final Collection<String> ids = conf.getTrimmedStringCollection( |
| DFSConfigKeys.DFS_INTERNAL_NAMESERVICES_KEY); |
| return !ids.isEmpty()? ids: DFSUtilClient.getNameServiceIds(conf); |
| } |
| |
| /** |
| * Get a URI for each internal nameservice. If a nameservice is |
| * HA-enabled, and the configured failover proxy provider supports logical |
| * URIs, then the logical URI of the nameservice is returned. |
| * Otherwise, a URI corresponding to an RPC address of the single NN for that |
| * nameservice is returned, preferring the service RPC address over the |
| * client RPC address. |
| * |
| * @param conf configuration |
| * @return a collection of all configured NN URIs, preferring service |
| * addresses |
| */ |
| public static Collection<URI> getInternalNsRpcUris(Configuration conf) { |
| return getNameServiceUris(conf, getInternalNameServices(conf), |
| DFSConfigKeys.DFS_NAMENODE_SERVICE_RPC_ADDRESS_KEY, |
| DFSConfigKeys.DFS_NAMENODE_RPC_ADDRESS_KEY); |
| } |
| |
| /** |
| * Get a URI for each configured nameservice. If a nameservice is |
| * HA-enabled, and the configured failover proxy provider supports logical |
| * URIs, then the logical URI of the nameservice is returned. |
| * Otherwise, a URI corresponding to the address of the single NN for that |
| * nameservice is returned. |
| * |
| * @param conf configuration |
| * @param keys configuration keys to try in order to get the URI for non-HA |
| * nameservices |
| * @return a collection of all configured NN URIs |
| */ |
| static Collection<URI> getNameServiceUris(Configuration conf, |
| Collection<String> nameServices, String... keys) { |
| Set<URI> ret = new HashSet<URI>(); |
| |
| // We're passed multiple possible configuration keys for any given NN or HA |
| // nameservice, and search the config in order of these keys. In order to |
| // make sure that a later config lookup (e.g. fs.defaultFS) doesn't add a |
| // URI for a config key for which we've already found a preferred entry, we |
| // keep track of non-preferred keys here. |
| Set<URI> nonPreferredUris = new HashSet<URI>(); |
| |
| for (String nsId : nameServices) { |
| URI nsUri = createUri(HdfsConstants.HDFS_URI_SCHEME, nsId, -1); |
| /** |
| * Determine whether the logical URI of the name service can be resolved |
| * by the configured failover proxy provider. If not, we should try to |
| * resolve the URI here |
| */ |
| boolean useLogicalUri = false; |
| try { |
| useLogicalUri = HAUtil.useLogicalUri(conf, nsUri); |
| } catch (IOException e){ |
| LOG.warn("Getting exception while trying to determine if nameservice " |
| + nsId + " can use logical URI: " + e); |
| } |
| if (HAUtil.isHAEnabled(conf, nsId) && useLogicalUri) { |
| // Add the logical URI of the nameservice. |
| ret.add(nsUri); |
| } else { |
| // Add the URI corresponding to the address of the NN. |
| boolean uriFound = false; |
| for (String key : keys) { |
| String addr = conf.get(DFSUtilClient.concatSuffixes(key, nsId)); |
| if (addr != null) { |
| URI uri = createUri(HdfsConstants.HDFS_URI_SCHEME, |
| NetUtils.createSocketAddr(addr)); |
| if (!uriFound) { |
| uriFound = true; |
| ret.add(uri); |
| } else { |
| nonPreferredUris.add(uri); |
| } |
| } |
| } |
| } |
| } |
| |
| // Add the generic configuration keys. |
| boolean uriFound = false; |
| for (String key : keys) { |
| String addr = conf.get(key); |
| if (addr != null) { |
| URI uri = createUri(HdfsConstants.HDFS_URI_SCHEME, |
| NetUtils.createSocketAddr(addr)); |
| if (!uriFound) { |
| uriFound = true; |
| ret.add(uri); |
| } else { |
| nonPreferredUris.add(uri); |
| } |
| } |
| } |
| |
| // Add the default URI if it is an HDFS URI and we haven't come up with a |
| // valid non-nameservice NN address yet. Consider the servicerpc-address |
| // and rpc-address to be the "unnamed" nameservice. defaultFS is our |
| // fallback when rpc-address isn't given. We therefore only want to add |
| // the defaultFS when neither the servicerpc-address (which is preferred) |
| // nor the rpc-address (which overrides defaultFS) is given. |
| if (!uriFound) { |
| URI defaultUri = FileSystem.getDefaultUri(conf); |
| if (defaultUri != null) { |
| // checks if defaultUri is ip:port format |
| // and convert it to hostname:port format |
| if (defaultUri.getPort() != -1) { |
| defaultUri = createUri(defaultUri.getScheme(), |
| NetUtils.createSocketAddr(defaultUri.getHost(), |
| defaultUri.getPort())); |
| } |
| |
| defaultUri = trimUri(defaultUri); |
| |
| if (HdfsConstants.HDFS_URI_SCHEME.equals(defaultUri.getScheme()) && |
| !nonPreferredUris.contains(defaultUri)) { |
| ret.add(defaultUri); |
| } |
| } |
| } |
| |
| return ret; |
| } |
| |
| /** |
| * Given the InetSocketAddress this method returns the nameservice Id |
| * corresponding to the key with matching address, by doing a reverse |
| * lookup on the list of nameservices until it finds a match. |
| * |
| * Since the process of resolving URIs to Addresses is slightly expensive, |
| * this utility method should not be used in performance-critical routines. |
| * |
| * @param conf - configuration |
| * @param address - InetSocketAddress for configured communication with NN. |
| * Configured addresses are typically given as URIs, but we may have to |
| * compare against a URI typed in by a human, or the server name may be |
| * aliased, so we compare unambiguous InetSocketAddresses instead of just |
| * comparing URI substrings. |
| * @param keys - list of configured communication parameters that should |
| * be checked for matches. For example, to compare against RPC addresses, |
| * provide the list DFS_NAMENODE_SERVICE_RPC_ADDRESS_KEY, |
| * DFS_NAMENODE_RPC_ADDRESS_KEY. Use the generic parameter keys, |
| * not the NameServiceId-suffixed keys. |
| * @return nameserviceId, or null if no match found |
| */ |
| public static String getNameServiceIdFromAddress(final Configuration conf, |
| final InetSocketAddress address, String... keys) { |
| // Configuration with a single namenode and no nameserviceId |
| String[] ids = getSuffixIDs(conf, address, keys); |
| return (ids != null) ? ids[0] : null; |
| } |
| |
| /** |
| * return server http or https address from the configuration for a |
| * given namenode rpc address. |
| * @param namenodeAddr - namenode RPC address |
| * @param conf configuration |
| * @param scheme - the scheme (http / https) |
| * @return server http or https address |
| * @throws IOException |
| */ |
| public static URI getInfoServer(InetSocketAddress namenodeAddr, |
| Configuration conf, String scheme) throws IOException { |
| String[] suffixes = null; |
| if (namenodeAddr != null) { |
| // if non-default namenode, try reverse look up |
| // the nameServiceID if it is available |
| suffixes = getSuffixIDs(conf, namenodeAddr, |
| DFSConfigKeys.DFS_NAMENODE_SERVICE_RPC_ADDRESS_KEY, |
| DFSConfigKeys.DFS_NAMENODE_RPC_ADDRESS_KEY); |
| } |
| |
| String authority; |
| if ("http".equals(scheme)) { |
| authority = getSuffixedConf(conf, DFS_NAMENODE_HTTP_ADDRESS_KEY, |
| DFS_NAMENODE_HTTP_ADDRESS_DEFAULT, suffixes); |
| } else if ("https".equals(scheme)) { |
| authority = getSuffixedConf(conf, DFS_NAMENODE_HTTPS_ADDRESS_KEY, |
| DFS_NAMENODE_HTTPS_ADDRESS_DEFAULT, suffixes); |
| } else { |
| throw new IllegalArgumentException("Invalid scheme:" + scheme); |
| } |
| |
| if (namenodeAddr != null) { |
| authority = substituteForWildcardAddress(authority, |
| namenodeAddr.getHostName()); |
| } |
| return URI.create(scheme + "://" + authority); |
| } |
| |
| /** |
| * Lookup the HTTP / HTTPS address of the namenode, and replace its hostname |
| * with defaultHost when it found out that the address is a wildcard / local |
| * address. |
| * |
| * @param defaultHost |
| * The default host name of the namenode. |
| * @param conf |
| * The configuration |
| * @param scheme |
| * HTTP or HTTPS |
| * @throws IOException |
| */ |
| public static URI getInfoServerWithDefaultHost(String defaultHost, |
| Configuration conf, final String scheme) throws IOException { |
| URI configuredAddr = getInfoServer(null, conf, scheme); |
| String authority = substituteForWildcardAddress( |
| configuredAddr.getAuthority(), defaultHost); |
| return URI.create(scheme + "://" + authority); |
| } |
| |
| /** |
| * Determine whether HTTP or HTTPS should be used to connect to the remote |
| * server. Currently the client only connects to the server via HTTPS if the |
| * policy is set to HTTPS_ONLY. |
| * |
| * @return the scheme (HTTP / HTTPS) |
| */ |
| public static String getHttpClientScheme(Configuration conf) { |
| HttpConfig.Policy policy = DFSUtil.getHttpPolicy(conf); |
| return policy == HttpConfig.Policy.HTTPS_ONLY ? "https" : "http"; |
| } |
| |
| /** |
| * Substitute a default host in the case that an address has been configured |
| * with a wildcard. This is used, for example, when determining the HTTP |
| * address of the NN -- if it's configured to bind to 0.0.0.0, we want to |
| * substitute the hostname from the filesystem URI rather than trying to |
| * connect to 0.0.0.0. |
| * @param configuredAddress the address found in the configuration |
| * @param defaultHost the host to substitute with, if configuredAddress |
| * is a local/wildcard address. |
| * @return the substituted address |
| * @throws IOException if it is a wildcard address and security is enabled |
| */ |
| @VisibleForTesting |
| static String substituteForWildcardAddress(String configuredAddress, |
| String defaultHost) { |
| InetSocketAddress sockAddr = NetUtils.createSocketAddr(configuredAddress); |
| final InetAddress addr = sockAddr.getAddress(); |
| if (addr != null && addr.isAnyLocalAddress()) { |
| return defaultHost + ":" + sockAddr.getPort(); |
| } else { |
| return configuredAddress; |
| } |
| } |
| |
| private static String getSuffixedConf(Configuration conf, |
| String key, String defaultVal, String[] suffixes) { |
| String ret = conf.get(DFSUtil.addKeySuffixes(key, suffixes)); |
| if (ret != null) { |
| return ret; |
| } |
| return conf.get(key, defaultVal); |
| } |
| |
| /** |
| * Sets the node specific setting into generic configuration key. Looks up |
| * value of "key.nameserviceId.namenodeId" and if found sets that value into |
| * generic key in the conf. If this is not found, falls back to |
| * "key.nameserviceId" and then the unmodified key. |
| * |
| * Note that this only modifies the runtime conf. |
| * |
| * @param conf |
| * Configuration object to lookup specific key and to set the value |
| * to the key passed. Note the conf object is modified. |
| * @param nameserviceId |
| * nameservice Id to construct the node specific key. Pass null if |
| * federation is not configuration. |
| * @param nnId |
| * namenode Id to construct the node specific key. Pass null if |
| * HA is not configured. |
| * @param keys |
| * The key for which node specific value is looked up |
| */ |
| public static void setGenericConf(Configuration conf, |
| String nameserviceId, String nnId, String... keys) { |
| for (String key : keys) { |
| String value = conf.get(addKeySuffixes(key, nameserviceId, nnId)); |
| if (value != null) { |
| conf.set(key, value); |
| continue; |
| } |
| value = conf.get(addKeySuffixes(key, nameserviceId)); |
| if (value != null) { |
| conf.set(key, value); |
| } |
| } |
| } |
| |
| /** |
| * Round bytes to GiB (gibibyte) |
| * @param bytes number of bytes |
| * @return number of GiB |
| */ |
| public static int roundBytesToGB(long bytes) { |
| return Math.round((float)bytes/ 1024 / 1024 / 1024); |
| } |
| |
| /** |
| * Get nameservice Id for the {@link NameNode} based on namenode RPC address |
| * matching the local node address. |
| */ |
| public static String getNamenodeNameServiceId(Configuration conf) { |
| return getNameServiceId(conf, DFS_NAMENODE_RPC_ADDRESS_KEY); |
| } |
| |
| /** |
| * Get nameservice Id for the BackupNode based on backup node RPC address |
| * matching the local node address. |
| */ |
| public static String getBackupNameServiceId(Configuration conf) { |
| return getNameServiceId(conf, DFS_NAMENODE_BACKUP_ADDRESS_KEY); |
| } |
| |
| /** |
| * Get nameservice Id for the secondary node based on secondary http address |
| * matching the local node address. |
| */ |
| public static String getSecondaryNameServiceId(Configuration conf) { |
| return getNameServiceId(conf, DFS_NAMENODE_SECONDARY_HTTP_ADDRESS_KEY); |
| } |
| |
| /** |
| * Get the nameservice Id by matching the {@code addressKey} with the |
| * the address of the local node. |
| * |
| * If {@link DFSConfigKeys#DFS_NAMESERVICE_ID} is not specifically |
| * configured, and more than one nameservice Id is configured, this method |
| * determines the nameservice Id by matching the local node's address with the |
| * configured addresses. When a match is found, it returns the nameservice Id |
| * from the corresponding configuration key. |
| * |
| * @param conf Configuration |
| * @param addressKey configuration key to get the address. |
| * @return nameservice Id on success, null if federation is not configured. |
| * @throws HadoopIllegalArgumentException on error |
| */ |
| private static String getNameServiceId(Configuration conf, String addressKey) { |
| String nameserviceId = conf.get(DFS_NAMESERVICE_ID); |
| if (nameserviceId != null) { |
| return nameserviceId; |
| } |
| Collection<String> nsIds = DFSUtilClient.getNameServiceIds(conf); |
| if (1 == nsIds.size()) { |
| return nsIds.toArray(new String[1])[0]; |
| } |
| String nnId = conf.get(DFS_HA_NAMENODE_ID_KEY); |
| |
| return getSuffixIDs(conf, addressKey, null, nnId, LOCAL_ADDRESS_MATCHER)[0]; |
| } |
| |
| /** |
| * Determine the {@link InetSocketAddress} to bind to, for any service. |
| * In case of HA or federation, the address is assumed to specified as |
| * {@code confKey}.NAMESPACEID.NAMENODEID as appropriate. |
| * |
| * @param conf configuration. |
| * @param confKey configuration key (prefix if HA/federation) used to |
| * specify the address for the service. |
| * @param defaultValue default value for the address. |
| * @param bindHostKey configuration key (prefix if HA/federation) |
| * specifying host to bind to. |
| * @return the address to bind to. |
| */ |
| public static InetSocketAddress getBindAddress(Configuration conf, |
| String confKey, String defaultValue, String bindHostKey) { |
| InetSocketAddress address; |
| String nsId = DFSUtil.getNamenodeNameServiceId(conf); |
| String bindHostActualKey; |
| if (nsId != null) { |
| String namenodeId = HAUtil.getNameNodeId(conf, nsId); |
| address = DFSUtilClient.getAddressesForNameserviceId( |
| conf, nsId, null, confKey).get(namenodeId); |
| bindHostActualKey = DFSUtil.addKeySuffixes(bindHostKey, nsId, namenodeId); |
| } else { |
| address = NetUtils.createSocketAddr(conf.get(confKey, defaultValue)); |
| bindHostActualKey = bindHostKey; |
| } |
| |
| String bindHost = conf.get(bindHostActualKey); |
| if (bindHost == null || bindHost.isEmpty()) { |
| bindHost = address.getHostName(); |
| } |
| return new InetSocketAddress(bindHost, address.getPort()); |
| } |
| |
| /** |
| * Returns nameservice Id and namenode Id when the local host matches the |
| * configuration parameter {@code addressKey}.<nameservice Id>.<namenode Id> |
| * |
| * @param conf Configuration |
| * @param addressKey configuration key corresponding to the address. |
| * @param knownNsId only look at configs for the given nameservice, if not-null |
| * @param knownNNId only look at configs for the given namenode, if not null |
| * @param matcher matching criteria for matching the address |
| * @return Array with nameservice Id and namenode Id on success. First element |
| * in the array is nameservice Id and second element is namenode Id. |
| * Null value indicates that the configuration does not have the the |
| * Id. |
| * @throws HadoopIllegalArgumentException on error |
| */ |
| static String[] getSuffixIDs(final Configuration conf, final String addressKey, |
| String knownNsId, String knownNNId, |
| final AddressMatcher matcher) { |
| String nameserviceId = null; |
| String namenodeId = null; |
| int found = 0; |
| |
| Collection<String> nsIds = DFSUtilClient.getNameServiceIds(conf); |
| for (String nsId : DFSUtilClient.emptyAsSingletonNull(nsIds)) { |
| if (knownNsId != null && !knownNsId.equals(nsId)) { |
| continue; |
| } |
| |
| Collection<String> nnIds = DFSUtilClient.getNameNodeIds(conf, nsId); |
| for (String nnId : DFSUtilClient.emptyAsSingletonNull(nnIds)) { |
| if (LOG.isTraceEnabled()) { |
| LOG.trace(String.format("addressKey: %s nsId: %s nnId: %s", |
| addressKey, nsId, nnId)); |
| } |
| if (knownNNId != null && !knownNNId.equals(nnId)) { |
| continue; |
| } |
| String key = addKeySuffixes(addressKey, nsId, nnId); |
| String addr = conf.get(key); |
| if (addr == null) { |
| continue; |
| } |
| InetSocketAddress s = null; |
| try { |
| s = NetUtils.createSocketAddr(addr); |
| } catch (Exception e) { |
| LOG.warn("Exception in creating socket address " + addr, e); |
| continue; |
| } |
| if (!s.isUnresolved() && matcher.match(s)) { |
| nameserviceId = nsId; |
| namenodeId = nnId; |
| found++; |
| } |
| } |
| } |
| if (found > 1) { // Only one address must match the local address |
| String msg = "Configuration has multiple addresses that match " |
| + "local node's address. Please configure the system with " |
| + DFS_NAMESERVICE_ID + " and " |
| + DFS_HA_NAMENODE_ID_KEY; |
| throw new HadoopIllegalArgumentException(msg); |
| } |
| return new String[] { nameserviceId, namenodeId }; |
| } |
| |
| /** |
| * For given set of {@code keys} adds nameservice Id and or namenode Id |
| * and returns {nameserviceId, namenodeId} when address match is found. |
| * @see #getSuffixIDs(Configuration, String, String, String, AddressMatcher) |
| */ |
| static String[] getSuffixIDs(final Configuration conf, |
| final InetSocketAddress address, final String... keys) { |
| AddressMatcher matcher = new AddressMatcher() { |
| @Override |
| public boolean match(InetSocketAddress s) { |
| return address.equals(s); |
| } |
| }; |
| |
| for (String key : keys) { |
| String[] ids = getSuffixIDs(conf, key, null, null, matcher); |
| if (ids != null && (ids [0] != null || ids[1] != null)) { |
| return ids; |
| } |
| } |
| return null; |
| } |
| |
| private interface AddressMatcher { |
| public boolean match(InetSocketAddress s); |
| } |
| |
| /** Create an URI from scheme and address. */ |
| public static URI createUri(String scheme, InetSocketAddress address) { |
| return createUri(scheme, address.getHostName(), address.getPort()); |
| } |
| |
| /** Create an URI from scheme, host, and port. */ |
| public static URI createUri(String scheme, String host, int port) { |
| try { |
| return new URI(scheme, null, host, port, null, null, null); |
| } catch (URISyntaxException x) { |
| throw new IllegalArgumentException(x.getMessage(), x); |
| } |
| } |
| |
| /** Remove unnecessary path from HDFS URI. */ |
| static URI trimUri(URI uri) { |
| String path = uri.getPath(); |
| if (HdfsConstants.HDFS_URI_SCHEME.equals(uri.getScheme()) && |
| path != null && !path.isEmpty()) { |
| uri = createUri(uri.getScheme(), uri.getHost(), uri.getPort()); |
| } |
| return uri; |
| } |
| |
| /** |
| * Add protobuf based protocol to the {@link org.apache.hadoop.ipc.RPC.Server} |
| * @param conf configuration |
| * @param protocol Protocol interface |
| * @param service service that implements the protocol |
| * @param server RPC server to which the protocol & implementation is |
| * added to |
| * @throws IOException |
| */ |
| public static void addPBProtocol(Configuration conf, Class<?> protocol, |
| BlockingService service, RPC.Server server) throws IOException { |
| RPC.setProtocolEngine(conf, protocol, ProtobufRpcEngine2.class); |
| server.addProtocol(RPC.RpcKind.RPC_PROTOCOL_BUFFER, protocol, service); |
| } |
| |
| /** |
| * Add protobuf based protocol to the {@link RPC.Server}. |
| * This engine uses Protobuf 2.5.0. Recommended to upgrade to |
| * Protobuf 3.x from hadoop-thirdparty and use |
| * {@link DFSUtil#addPBProtocol(Configuration, Class, BlockingService, |
| * RPC.Server)}. |
| * @param conf configuration |
| * @param protocol Protocol interface |
| * @param service service that implements the protocol |
| * @param server RPC server to which the protocol & implementation is |
| * added to |
| * @throws IOException |
| */ |
| @Deprecated |
| public static void addPBProtocol(Configuration conf, Class<?> protocol, |
| com.google.protobuf.BlockingService service, RPC.Server server) |
| throws IOException { |
| RPC.setProtocolEngine(conf, protocol, ProtobufRpcEngine.class); |
| server.addProtocol(RPC.RpcKind.RPC_PROTOCOL_BUFFER, protocol, service); |
| } |
| |
| /** |
| * Map a logical namenode ID to its service address. Use the given |
| * nameservice if specified, or the configured one if none is given. |
| * |
| * @param conf Configuration |
| * @param nsId which nameservice nnId is a part of, optional |
| * @param nnId the namenode ID to get the service addr for |
| * @return the service addr, null if it could not be determined |
| */ |
| public static String getNamenodeServiceAddr(final Configuration conf, |
| String nsId, String nnId) { |
| |
| if (nsId == null) { |
| nsId = getOnlyNameServiceIdOrNull(conf); |
| } |
| |
| String serviceAddrKey = DFSUtilClient.concatSuffixes( |
| DFSConfigKeys.DFS_NAMENODE_SERVICE_RPC_ADDRESS_KEY, nsId, nnId); |
| |
| String addrKey = DFSUtilClient.concatSuffixes( |
| DFSConfigKeys.DFS_NAMENODE_RPC_ADDRESS_KEY, nsId, nnId); |
| |
| String serviceRpcAddr = conf.get(serviceAddrKey); |
| if (serviceRpcAddr == null) { |
| serviceRpcAddr = conf.get(addrKey); |
| } |
| return serviceRpcAddr; |
| } |
| |
| /** |
| * Map a logical namenode ID to its web address. Use the given nameservice if |
| * specified, or the configured one if none is given. |
| * |
| * @param conf Configuration |
| * @param nsId which nameservice nnId is a part of, optional |
| * @param nnId the namenode ID to get the service addr for |
| * @return the service addr, null if it could not be determined |
| */ |
| public static String getNamenodeWebAddr(final Configuration conf, String nsId, |
| String nnId) { |
| |
| if (nsId == null) { |
| nsId = getOnlyNameServiceIdOrNull(conf); |
| } |
| |
| String webAddrBaseKey = DFSConfigKeys.DFS_NAMENODE_HTTP_ADDRESS_KEY; |
| String webAddrDefault = DFSConfigKeys.DFS_NAMENODE_HTTP_ADDRESS_DEFAULT; |
| if (getHttpPolicy(conf) == HttpConfig.Policy.HTTPS_ONLY) { |
| webAddrBaseKey = DFSConfigKeys.DFS_NAMENODE_HTTPS_ADDRESS_KEY; |
| webAddrDefault = DFSConfigKeys.DFS_NAMENODE_HTTPS_ADDRESS_DEFAULT; |
| } |
| String webAddrKey = DFSUtilClient.concatSuffixes( |
| webAddrBaseKey, nsId, nnId); |
| String webAddr = conf.get(webAddrKey, webAddrDefault); |
| return webAddr; |
| } |
| |
| /** |
| * Get all of the Web addresses of the individual NNs in a given nameservice. |
| * |
| * @param conf Configuration |
| * @param nsId the nameservice whose NNs addresses we want. |
| * @param defaultValue default address to return in case key is not found. |
| * @return A map from nnId {@literal ->} Web address of each NN in the |
| * nameservice. |
| */ |
| public static Map<String, InetSocketAddress> getWebAddressesForNameserviceId( |
| Configuration conf, String nsId, String defaultValue) { |
| return DFSUtilClient.getAddressesForNameserviceId(conf, nsId, defaultValue, |
| DFSConfigKeys.DFS_NAMENODE_HTTP_ADDRESS_KEY); |
| } |
| |
| /** |
| * If the configuration refers to only a single nameservice, return the |
| * name of that nameservice. If it refers to 0 or more than 1, return null. |
| */ |
| public static String getOnlyNameServiceIdOrNull(Configuration conf) { |
| Collection<String> nsIds = DFSUtilClient.getNameServiceIds(conf); |
| if (1 == nsIds.size()) { |
| return nsIds.toArray(new String[1])[0]; |
| } else { |
| // No nameservice ID was given and more than one is configured |
| return null; |
| } |
| } |
| |
| public static final Options helpOptions = new Options(); |
| public static final Option helpOpt = new Option("h", "help", false, |
| "get help information"); |
| |
| static { |
| helpOptions.addOption(helpOpt); |
| } |
| |
| /** |
| * Parse the arguments for commands |
| * |
| * @param args the argument to be parsed |
| * @param helpDescription help information to be printed out |
| * @param out Printer |
| * @param printGenericCommandUsage whether to print the |
| * generic command usage defined in ToolRunner |
| * @return true when the argument matches help option, false if not |
| */ |
| public static boolean parseHelpArgument(String[] args, |
| String helpDescription, PrintStream out, boolean printGenericCommandUsage) { |
| if (args.length == 1) { |
| try { |
| CommandLineParser parser = new PosixParser(); |
| CommandLine cmdLine = parser.parse(helpOptions, args); |
| if (cmdLine.hasOption(helpOpt.getOpt()) |
| || cmdLine.hasOption(helpOpt.getLongOpt())) { |
| // should print out the help information |
| out.println(helpDescription + "\n"); |
| if (printGenericCommandUsage) { |
| ToolRunner.printGenericCommandUsage(out); |
| } |
| return true; |
| } |
| } catch (ParseException pe) { |
| return false; |
| } |
| } |
| return false; |
| } |
| |
| /** |
| * Get DFS_NAMENODE_INVALIDATE_WORK_PCT_PER_ITERATION from configuration. |
| * |
| * @param conf Configuration |
| * @return Value of DFS_NAMENODE_INVALIDATE_WORK_PCT_PER_ITERATION |
| */ |
| public static float getInvalidateWorkPctPerIteration(Configuration conf) { |
| float blocksInvalidateWorkPct = conf.getFloat( |
| DFSConfigKeys.DFS_NAMENODE_INVALIDATE_WORK_PCT_PER_ITERATION, |
| DFSConfigKeys.DFS_NAMENODE_INVALIDATE_WORK_PCT_PER_ITERATION_DEFAULT); |
| Preconditions.checkArgument( |
| (blocksInvalidateWorkPct > 0 && blocksInvalidateWorkPct <= 1.0f), |
| DFSConfigKeys.DFS_NAMENODE_INVALIDATE_WORK_PCT_PER_ITERATION + |
| " = '" + blocksInvalidateWorkPct + "' is invalid. " + |
| "It should be a positive, non-zero float value, not greater than 1.0f, " + |
| "to indicate a percentage."); |
| return blocksInvalidateWorkPct; |
| } |
| |
| /** |
| * Get DFS_NAMENODE_REPLICATION_WORK_MULTIPLIER_PER_ITERATION from |
| * configuration. |
| * |
| * @param conf Configuration |
| * @return Value of DFS_NAMENODE_REPLICATION_WORK_MULTIPLIER_PER_ITERATION |
| */ |
| public static int getReplWorkMultiplier(Configuration conf) { |
| int blocksReplWorkMultiplier = conf.getInt( |
| DFSConfigKeys.DFS_NAMENODE_REPLICATION_WORK_MULTIPLIER_PER_ITERATION, |
| DFSConfigKeys.DFS_NAMENODE_REPLICATION_WORK_MULTIPLIER_PER_ITERATION_DEFAULT); |
| Preconditions.checkArgument( |
| (blocksReplWorkMultiplier > 0), |
| DFSConfigKeys.DFS_NAMENODE_REPLICATION_WORK_MULTIPLIER_PER_ITERATION + |
| " = '" + blocksReplWorkMultiplier + "' is invalid. " + |
| "It should be a positive, non-zero integer value."); |
| return blocksReplWorkMultiplier; |
| } |
| |
| /** |
| * Get SPNEGO keytab Key from configuration |
| * |
| * @param conf Configuration |
| * @param defaultKey default key to be used for config lookup |
| * @return DFS_WEB_AUTHENTICATION_KERBEROS_KEYTAB_KEY if the key is not empty |
| * else return defaultKey |
| */ |
| public static String getSpnegoKeytabKey(Configuration conf, String defaultKey) { |
| String value = |
| conf.get(DFSConfigKeys.DFS_WEB_AUTHENTICATION_KERBEROS_KEYTAB_KEY); |
| return (value == null || value.isEmpty()) ? |
| defaultKey : DFSConfigKeys.DFS_WEB_AUTHENTICATION_KERBEROS_KEYTAB_KEY; |
| } |
| |
| /** |
| * Get http policy. |
| */ |
| public static HttpConfig.Policy getHttpPolicy(Configuration conf) { |
| String policyStr = conf.get(DFSConfigKeys.DFS_HTTP_POLICY_KEY, |
| DFSConfigKeys.DFS_HTTP_POLICY_DEFAULT); |
| HttpConfig.Policy policy = HttpConfig.Policy.fromString(policyStr); |
| if (policy == null) { |
| throw new HadoopIllegalArgumentException("Unrecognized value '" |
| + policyStr + "' for " + DFSConfigKeys.DFS_HTTP_POLICY_KEY); |
| } |
| |
| conf.set(DFSConfigKeys.DFS_HTTP_POLICY_KEY, policy.name()); |
| return policy; |
| } |
| |
| public static HttpServer2.Builder loadSslConfToHttpServerBuilder(HttpServer2.Builder builder, |
| Configuration sslConf) { |
| return builder |
| .needsClientAuth( |
| sslConf.getBoolean(DFS_CLIENT_HTTPS_NEED_AUTH_KEY, |
| DFS_CLIENT_HTTPS_NEED_AUTH_DEFAULT)) |
| .keyPassword(getPassword(sslConf, DFS_SERVER_HTTPS_KEYPASSWORD_KEY)) |
| .keyStore(sslConf.get("ssl.server.keystore.location"), |
| getPassword(sslConf, DFS_SERVER_HTTPS_KEYSTORE_PASSWORD_KEY), |
| sslConf.get("ssl.server.keystore.type", "jks")) |
| .trustStore(sslConf.get("ssl.server.truststore.location"), |
| getPassword(sslConf, DFS_SERVER_HTTPS_TRUSTSTORE_PASSWORD_KEY), |
| sslConf.get("ssl.server.truststore.type", "jks")) |
| .excludeCiphers( |
| sslConf.get("ssl.server.exclude.cipher.list")); |
| } |
| |
| /** |
| * Leverages the Configuration.getPassword method to attempt to get |
| * passwords from the CredentialProvider API before falling back to |
| * clear text in config - if falling back is allowed. |
| * @param conf Configuration instance |
| * @param alias name of the credential to retreive |
| * @return String credential value or null |
| */ |
| static String getPassword(Configuration conf, String alias) { |
| String password = null; |
| try { |
| char[] passchars = conf.getPassword(alias); |
| if (passchars != null) { |
| password = new String(passchars); |
| } |
| } |
| catch (IOException ioe) { |
| LOG.warn("Setting password to null since IOException is caught" |
| + " when getting password", ioe); |
| |
| password = null; |
| } |
| return password; |
| } |
| |
| /** |
| * Converts a Date into an ISO-8601 formatted datetime string. |
| */ |
| public static String dateToIso8601String(Date date) { |
| return DFSUtilClient.dateToIso8601String(date); |
| } |
| |
| /** |
| * Converts a time duration in milliseconds into DDD:HH:MM:SS format. |
| */ |
| public static String durationToString(long durationMs) { |
| return DFSUtilClient.durationToString(durationMs); |
| } |
| |
| /** |
| * Converts a relative time string into a duration in milliseconds. |
| */ |
| public static long parseRelativeTime(String relTime) throws IOException { |
| if (relTime.length() < 2) { |
| throw new IOException("Unable to parse relative time value of " + relTime |
| + ": too short"); |
| } |
| String ttlString = relTime.substring(0, relTime.length()-1); |
| long ttl; |
| try { |
| ttl = Long.parseLong(ttlString); |
| } catch (NumberFormatException e) { |
| throw new IOException("Unable to parse relative time value of " + relTime |
| + ": " + ttlString + " is not a number"); |
| } |
| if (relTime.endsWith("s")) { |
| // pass |
| } else if (relTime.endsWith("m")) { |
| ttl *= 60; |
| } else if (relTime.endsWith("h")) { |
| ttl *= 60*60; |
| } else if (relTime.endsWith("d")) { |
| ttl *= 60*60*24; |
| } else { |
| throw new IOException("Unable to parse relative time value of " + relTime |
| + ": unknown time unit " + relTime.charAt(relTime.length() - 1)); |
| } |
| return ttl*1000; |
| } |
| |
| /** |
| * Load HTTPS-related configuration. |
| */ |
| public static Configuration loadSslConfiguration(Configuration conf) { |
| Configuration sslConf = new Configuration(false); |
| |
| sslConf.addResource(conf.get( |
| DFSConfigKeys.DFS_SERVER_HTTPS_KEYSTORE_RESOURCE_KEY, |
| DFSConfigKeys.DFS_SERVER_HTTPS_KEYSTORE_RESOURCE_DEFAULT)); |
| |
| final String[] reqSslProps = { |
| DFSConfigKeys.DFS_SERVER_HTTPS_TRUSTSTORE_LOCATION_KEY, |
| DFSConfigKeys.DFS_SERVER_HTTPS_KEYSTORE_LOCATION_KEY, |
| DFSConfigKeys.DFS_SERVER_HTTPS_KEYSTORE_PASSWORD_KEY, |
| DFSConfigKeys.DFS_SERVER_HTTPS_KEYPASSWORD_KEY |
| }; |
| |
| // Check if the required properties are included |
| for (String sslProp : reqSslProps) { |
| if (sslConf.get(sslProp) == null) { |
| LOG.warn("SSL config " + sslProp + " is missing. If " + |
| DFSConfigKeys.DFS_SERVER_HTTPS_KEYSTORE_RESOURCE_KEY + |
| " is specified, make sure it is a relative path"); |
| } |
| } |
| |
| boolean requireClientAuth = conf.getBoolean(DFS_CLIENT_HTTPS_NEED_AUTH_KEY, |
| DFS_CLIENT_HTTPS_NEED_AUTH_DEFAULT); |
| sslConf.setBoolean(DFS_CLIENT_HTTPS_NEED_AUTH_KEY, requireClientAuth); |
| return sslConf; |
| } |
| |
| /** |
| * Return a HttpServer.Builder that the journalnode / namenode / secondary |
| * namenode can use to initialize their HTTP / HTTPS server. |
| * |
| */ |
| public static HttpServer2.Builder httpServerTemplateForNNAndJN( |
| Configuration conf, final InetSocketAddress httpAddr, |
| final InetSocketAddress httpsAddr, String name, String spnegoUserNameKey, |
| String spnegoKeytabFileKey) throws IOException { |
| HttpConfig.Policy policy = getHttpPolicy(conf); |
| |
| String filterInitializerConfKey = "hadoop.http.filter.initializers"; |
| String initializers = conf.get(filterInitializerConfKey, ""); |
| |
| String[] parts = initializers.split(","); |
| Set<String> target = new LinkedHashSet<String>(); |
| for (String filterInitializer : parts) { |
| filterInitializer = filterInitializer.trim(); |
| if (filterInitializer.equals( |
| AuthenticationFilterInitializer.class.getName()) || |
| filterInitializer.equals( |
| ProxyUserAuthenticationFilterInitializer.class.getName()) || |
| filterInitializer.isEmpty()) { |
| continue; |
| } |
| target.add(filterInitializer); |
| } |
| target.add(AuthFilterInitializer.class.getName()); |
| initializers = StringUtils.join(target, ","); |
| conf.set(filterInitializerConfKey, initializers); |
| |
| LOG.info("Filter initializers set : " + initializers); |
| |
| HttpServer2.Builder builder = new HttpServer2.Builder().setName(name) |
| .setConf(conf).setACL(new AccessControlList(conf.get(DFS_ADMIN, " "))) |
| .setSecurityEnabled(UserGroupInformation.isSecurityEnabled()) |
| .setUsernameConfKey(spnegoUserNameKey) |
| .setKeytabConfKey(getSpnegoKeytabKey(conf, spnegoKeytabFileKey)); |
| |
| // initialize the webserver for uploading/downloading files. |
| if (UserGroupInformation.isSecurityEnabled()) { |
| LOG.info("Starting web server as: " |
| + SecurityUtil.getServerPrincipal(conf.get(spnegoUserNameKey), |
| httpAddr.getHostName())); |
| } |
| |
| if (policy.isHttpEnabled()) { |
| if (httpAddr.getPort() == 0) { |
| builder.setFindPort(true); |
| } |
| |
| URI uri = URI.create("http://" + NetUtils.getHostPortString(httpAddr)); |
| builder.addEndpoint(uri); |
| LOG.info("Starting Web-server for " + name + " at: " + uri); |
| } |
| |
| if (policy.isHttpsEnabled() && httpsAddr != null) { |
| Configuration sslConf = loadSslConfiguration(conf); |
| loadSslConfToHttpServerBuilder(builder, sslConf); |
| |
| if (httpsAddr.getPort() == 0) { |
| builder.setFindPort(true); |
| } |
| |
| URI uri = URI.create("https://" + NetUtils.getHostPortString(httpsAddr)); |
| builder.addEndpoint(uri); |
| LOG.info("Starting Web-server for " + name + " at: " + uri); |
| } |
| return builder; |
| } |
| |
| /** |
| * Assert that all objects in the collection are equal. Returns silently if |
| * so, throws an AssertionError if any object is not equal. All null values |
| * are considered equal. |
| * |
| * @param objects the collection of objects to check for equality. |
| */ |
| public static void assertAllResultsEqual(Collection<?> objects) |
| throws AssertionError { |
| if (objects.size() == 0 || objects.size() == 1) |
| return; |
| |
| Object[] resultsArray = objects.toArray(); |
| for (int i = 1; i < resultsArray.length; i++) { |
| Object currElement = resultsArray[i]; |
| Object lastElement = resultsArray[i - 1]; |
| if ((currElement == null && currElement != lastElement) || |
| (currElement != null && !currElement.equals(lastElement))) { |
| throw new AssertionError("Not all elements match in results: " + |
| Arrays.toString(resultsArray)); |
| } |
| } |
| } |
| |
| /** |
| * Creates a new KeyProviderCryptoExtension by wrapping the |
| * KeyProvider specified in the given Configuration. |
| * |
| * @param conf Configuration |
| * @return new KeyProviderCryptoExtension, or null if no provider was found. |
| * @throws IOException if the KeyProvider is improperly specified in |
| * the Configuration |
| */ |
| public static KeyProviderCryptoExtension createKeyProviderCryptoExtension( |
| final Configuration conf) throws IOException { |
| KeyProvider keyProvider = HdfsKMSUtil.createKeyProvider(conf); |
| if (keyProvider == null) { |
| return null; |
| } |
| KeyProviderCryptoExtension cryptoProvider = KeyProviderCryptoExtension |
| .createKeyProviderCryptoExtension(keyProvider); |
| return cryptoProvider; |
| } |
| |
| /** |
| * Decodes an HDFS delegation token to its identifier. |
| * |
| * @param token the token |
| * @return the decoded identifier. |
| * @throws IOException |
| */ |
| public static DelegationTokenIdentifier decodeDelegationToken( |
| final Token<DelegationTokenIdentifier> token) throws IOException { |
| final DelegationTokenIdentifier id = new DelegationTokenIdentifier(); |
| final ByteArrayInputStream buf = |
| new ByteArrayInputStream(token.getIdentifier()); |
| try (DataInputStream in = new DataInputStream(buf)) { |
| id.readFields(in); |
| } |
| return id; |
| } |
| |
| /** |
| * Throw if the given directory has any non-empty protected descendants |
| * (including itself). |
| * |
| * @param iip directory whose descendants are to be checked. |
| * @throws AccessControlException if a non-empty protected descendant |
| * was found. |
| * @throws ParentNotDirectoryException |
| * @throws UnresolvedLinkException |
| */ |
| public static void checkProtectedDescendants( |
| FSDirectory fsd, INodesInPath iip) |
| throws AccessControlException, UnresolvedLinkException, |
| ParentNotDirectoryException { |
| final SortedSet<String> protectedDirs = fsd.getProtectedDirectories(); |
| if (protectedDirs.isEmpty()) { |
| return; |
| } |
| |
| String src = iip.getPath(); |
| // Is src protected? Caller has already checked it is non-empty. |
| if (protectedDirs.contains(src)) { |
| throw new AccessControlException( |
| "Cannot delete/rename non-empty protected directory " + src); |
| } |
| |
| // Are any descendants of src protected? |
| // The subSet call returns only the descendants of src since |
| // {@link Path#SEPARATOR} is "/" and '0' is the next ASCII |
| // character after '/'. |
| for (String descendant : |
| protectedDirs.subSet(src + Path.SEPARATOR, src + "0")) { |
| INodesInPath subdirIIP = |
| fsd.getINodesInPath(descendant, FSDirectory.DirOp.WRITE); |
| if (fsd.isNonEmptyDirectory(subdirIIP)) { |
| throw new AccessControlException( |
| "Cannot delete/rename non-empty protected subdirectory " |
| + descendant); |
| } |
| } |
| |
| if (fsd.isProtectedSubDirectoriesEnable()) { |
| while (!src.isEmpty()) { |
| int index = src.lastIndexOf(Path.SEPARATOR_CHAR); |
| src = src.substring(0, index); |
| if (protectedDirs.contains(src)) { |
| throw new AccessControlException( |
| "Cannot delete/rename subdirectory under protected subdirectory " |
| + src); |
| } |
| } |
| } |
| } |
| |
| /** |
| * Generates HdfsFileStatus flags. |
| * @param isEncrypted Sets HAS_CRYPT |
| * @param isErasureCoded Sets HAS_EC |
| * @param isSnapShottable Sets SNAPSHOT_ENABLED |
| * @param hasAcl Sets HAS_ACL |
| * @return HdfsFileStatus Flags |
| */ |
| public static EnumSet<HdfsFileStatus.Flags> getFlags( |
| final boolean isEncrypted, final boolean isErasureCoded, |
| boolean isSnapShottable, boolean hasAcl) { |
| EnumSet<HdfsFileStatus.Flags> flags = |
| EnumSet.noneOf(HdfsFileStatus.Flags.class); |
| if (hasAcl) { |
| flags.add(HdfsFileStatus.Flags.HAS_ACL); |
| } |
| if (isEncrypted) { |
| flags.add(HdfsFileStatus.Flags.HAS_CRYPT); |
| } |
| if (isErasureCoded) { |
| flags.add(HdfsFileStatus.Flags.HAS_EC); |
| } |
| if (isSnapShottable) { |
| flags.add(HdfsFileStatus.Flags.SNAPSHOT_ENABLED); |
| } |
| return flags; |
| } |
| |
| /** |
| * Check if the given path is the child of parent path. |
| * @param path Path to be check. |
| * @param parent Parent path. |
| * @return True if parent path is parent entry for given path. |
| */ |
| public static boolean isParentEntry(final String path, final String parent) { |
| if (!path.startsWith(parent)) { |
| return false; |
| } |
| |
| if (path.equals(parent)) { |
| return true; |
| } |
| |
| return path.charAt(parent.length()) == Path.SEPARATOR_CHAR |
| || parent.equals(Path.SEPARATOR); |
| } |
| } |
