| /** |
| * 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.falcon.hive.util; |
| |
| import org.apache.commons.lang3.StringUtils; |
| import org.apache.hadoop.conf.Configuration; |
| import org.apache.hadoop.fs.FileSystem; |
| import org.apache.hadoop.fs.Path; |
| import org.apache.hadoop.fs.permission.FsAction; |
| import org.apache.hadoop.fs.permission.FsPermission; |
| |
| import java.io.File; |
| import java.io.IOException; |
| |
| /** |
| * Utility class to validate HDFS files. |
| */ |
| public final class FileUtils { |
| |
| public static final String DEFAULT_EVENT_STORE_PATH = StringUtils.removeEnd(DRStatusStore |
| .BASE_DEFAULT_STORE_PATH, File.separator) + File.separator + "Events" + File.separator; |
| public static final FsPermission FS_PERMISSION_700 = new FsPermission(FsAction.ALL, FsAction.NONE, FsAction.NONE); |
| public static final FsPermission DEFAULT_DIR_PERMISSION = |
| new FsPermission(FsAction.ALL, FsAction.ALL, FsAction.NONE); |
| |
| |
| private FileUtils() {} |
| |
| public static Configuration getConfiguration(final String writeEP, |
| final String nnKerberosPrincipal) throws IOException { |
| Configuration conf = HiveDRUtils.getDefaultConf(); |
| conf.set("fs.defaultFS", writeEP); |
| if (StringUtils.isNotEmpty(nnKerberosPrincipal)) { |
| conf.set("dfs.namenode.kerberos.principal", nnKerberosPrincipal); |
| } |
| return conf; |
| } |
| |
| public static void validatePath(final FileSystem fileSystem, final Path basePath) throws IOException { |
| if (!fileSystem.exists(basePath)) { |
| throw new IOException("Please create base dir " + fileSystem.getUri() + basePath |
| + ". Please set group to " + DRStatusStore.getStoreGroup() |
| + " and permissions to " + DRStatusStore.DEFAULT_STORE_PERMISSION.toString()); |
| } |
| |
| if (!fileSystem.getFileStatus(basePath).getPermission().equals(DRStatusStore.DEFAULT_STORE_PERMISSION) |
| || !fileSystem.getFileStatus(basePath).getGroup().equalsIgnoreCase(DRStatusStore.getStoreGroup())) { |
| throw new IOException("Base dir " + fileSystem.getUri() + basePath |
| + " does not have correct ownership/permissions." |
| + " Please set group to " + DRStatusStore.getStoreGroup() |
| + " and permissions to " + DRStatusStore.DEFAULT_STORE_PERMISSION.toString()); |
| } |
| |
| } |
| } |