/* * Copyright 2016 Damien Carol <[email protected]> * * Licensed 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 hdfs.jsr203; import java.io.IOException; import java.nio.file.attribute.GroupPrincipal; import java.nio.file.attribute.PosixFileAttributes; import java.nio.file.attribute.PosixFilePermission; import java.nio.file.attribute.PosixFilePermissions; import java.nio.file.attribute.UserPrincipal; import java.util.Set; import org.apache.hadoop.fs.FileStatus; import org.apache.hadoop.fs.permission.FsPermission; /** * Implement {@link PosixFileAttributes}. */ public class HadoopPosixFileAttributes extends HadoopBasicFileAttributes implements PosixFileAttributes { private final UserPrincipal owner; private final GroupPrincipal group; private final Set<PosixFilePermission> permissions; public HadoopPosixFileAttributes(HadoopFileSystem hdfs, Object fileKey, FileStatus fileStatus) throws IOException { super(fileKey, fileStatus); this.owner = hdfs.getUserPrincipalLookupService() .lookupPrincipalByGroupName(fileStatus.getOwner()); this.group = hdfs.getUserPrincipalLookupService() .lookupPrincipalByGroupName(fileStatus.getGroup()); FsPermission fsPermission = getFileStatus().getPermission(); String perms = fsPermission.getUserAction().SYMBOL + fsPermission.getGroupAction().SYMBOL + fsPermission.getOtherAction().SYMBOL; this.permissions = PosixFilePermissions.fromString(perms); } @Override public UserPrincipal owner() { return owner; } @Override public GroupPrincipal group() { return group; } @Override public Set<PosixFilePermission> permissions() { return permissions; } }