mymeiyi commented on a change in pull request #163: HBASE-21995 Add a coprocessor to set HDFS ACL for hbase granted user URL: https://github.com/apache/hbase/pull/163#discussion_r292833811
########## File path: hbase-server/src/main/java/org/apache/hadoop/hbase/security/access/HDFSAclController.java ########## @@ -0,0 +1,634 @@ +/** + * 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.hbase.security.access; + +import java.io.IOException; +import java.util.ArrayList; +import java.util.Arrays; +import java.util.HashSet; +import java.util.List; +import java.util.Optional; +import java.util.Set; + +import org.apache.hadoop.conf.Configuration; +import org.apache.hadoop.fs.FileSystem; +import org.apache.hadoop.fs.Path; +import org.apache.hadoop.fs.permission.FsPermission; +import org.apache.hadoop.hbase.Cell; +import org.apache.hadoop.hbase.CellUtil; +import org.apache.hadoop.hbase.HBaseInterfaceAudience; +import org.apache.hadoop.hbase.NamespaceDescriptor; +import org.apache.hadoop.hbase.TableName; +import org.apache.hadoop.hbase.client.Admin; +import org.apache.hadoop.hbase.client.ColumnFamilyDescriptorBuilder; +import org.apache.hadoop.hbase.client.Delete; +import org.apache.hadoop.hbase.client.Get; +import org.apache.hadoop.hbase.client.Put; +import org.apache.hadoop.hbase.client.RegionInfo; +import org.apache.hadoop.hbase.client.Result; +import org.apache.hadoop.hbase.client.ResultScanner; +import org.apache.hadoop.hbase.client.Scan; +import org.apache.hadoop.hbase.client.SnapshotDescription; +import org.apache.hadoop.hbase.client.Table; +import org.apache.hadoop.hbase.client.TableDescriptor; +import org.apache.hadoop.hbase.client.TableDescriptorBuilder; +import org.apache.hadoop.hbase.coprocessor.CoreCoprocessor; +import org.apache.hadoop.hbase.coprocessor.HasMasterServices; +import org.apache.hadoop.hbase.coprocessor.MasterCoprocessor; +import org.apache.hadoop.hbase.coprocessor.MasterCoprocessorEnvironment; +import org.apache.hadoop.hbase.coprocessor.MasterObserver; +import org.apache.hadoop.hbase.coprocessor.ObserverContext; +import org.apache.hadoop.hbase.master.MasterServices; +import org.apache.hadoop.hbase.security.User; +import org.apache.hadoop.hbase.security.UserProvider; +import org.apache.hadoop.hbase.security.access.HDFSAclHelper.PathHelper; +import org.apache.hadoop.hbase.security.access.Permission.Action; +import org.apache.hadoop.hbase.util.Bytes; +import org.apache.yetus.audience.InterfaceAudience; +import org.slf4j.Logger; +import org.slf4j.LoggerFactory; + +/** + * Set HDFS ACLs to hFiles to make HBase granted users have permission to scan snapshot + * <p> + * To use this feature, please mask sure HDFS config: + * <ul> + * <li>dfs.permissions.enabled = true</li> + * <li>fs.permissions.umask-mode = 027 (or smaller umask than 027)</li> + * </ul> + * </p> + * <p> + * The implementation of this feature is as followings: + * <ul> + * <li>For public directories such as 'data' and 'archive', set other permission to '--x' to make + * everyone have the permission to access the directory.</li> + * <li>For namespace or table directories such as 'data/ns/table', 'archive/ns/table' and + * '.hbase-snapshot/snapshotName', set user 'r-x' acl and default 'r-x' acl when following + * operations happen: + * <ul> + * <li>grant user with global, namespace or table permission;</li> + * <li>revoke user from global, namespace or table;</li> + * <li>snapshot table;</li> + * <li>truncate table;</li> + * </ul> + * </li> + * <li>Note: Because snapshots are at table level, so this feature just considers users with global, + * namespace or table permissions, ignores users with table CF or cell permissions.</li> + * </ul> + * </p> + */ +@CoreCoprocessor [email protected](HBaseInterfaceAudience.CONFIG) +public class HDFSAclController implements MasterCoprocessor, MasterObserver { + private static final Logger LOG = LoggerFactory.getLogger(HDFSAclController.class); + + public static final String HDFS_ACL_ENABLE = "hbase.hdfs.acl.enable"; + public static final String HDFS_ACL_THREAD_NUMBER = "hbase.hdfs.acl.thread.number"; + // the tmp directory to restore snapshot, it can not be a sub directory of HBase root dir + public static final String SNAPSHOT_RESTORE_TMP_DIR = "hbase.snapshot.restore.tmp.dir"; + public static final String SNAPSHOT_RESTORE_TMP_DIR_DEFAULT = + "/hbase/.tmpdir-to-restore-snapshot"; + // If enable this feature, set public directories permission to 751 + public static final FsPermission ACL_ENABLE_PUBLIC_HFILE_PERMISSION = + new FsPermission((short) 0751); + // If enable this feature, set restore directory permission to 703 + public static final FsPermission ACL_ENABLE_RESTORE_HFILE_PERMISSION = + new FsPermission((short) 0703); + + private HDFSAclHelper hdfsAclHelper = null; + private PathHelper pathHelper = null; + private FileSystem fs = null; + /** Provider for mapping principal names to Users */ + private UserProvider userProvider; + + @Override + public Optional<MasterObserver> getMasterObserver() { + return Optional.of(this); + } + + @Override + public void preMasterInitialization(final ObserverContext<MasterCoprocessorEnvironment> c) + throws IOException { + if (isHdfsAclEnabled(c.getEnvironment().getConfiguration())) { + MasterServices masterServices = null; + MasterCoprocessorEnvironment mEnv = c.getEnvironment(); + if (mEnv instanceof HasMasterServices) { + masterServices = ((HasMasterServices) mEnv).getMasterServices(); + } + if (masterServices == null) { + throw new RuntimeException("master services can not be null"); Review comment: done ---------------------------------------------------------------- This is an automated message from the Apache Git Service. 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