| /* |
| * 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.accumulo.core.security; |
| |
| import java.util.ArrayList; |
| import java.util.HashMap; |
| import java.util.List; |
| |
| /** |
| * Accumulo system permissions. Each permission has an associated byte ID. |
| */ |
| public enum SystemPermission { |
| /* |
| * One may add new permissions, but new permissions must use new numbers. Current numbers in use |
| * must not be changed. |
| */ |
| GRANT((byte) 0), |
| CREATE_TABLE((byte) 1), |
| DROP_TABLE((byte) 2), |
| ALTER_TABLE((byte) 3), |
| CREATE_USER((byte) 4), |
| DROP_USER((byte) 5), |
| ALTER_USER((byte) 6), |
| SYSTEM((byte) 7), |
| CREATE_NAMESPACE((byte) 8), |
| DROP_NAMESPACE((byte) 9), |
| ALTER_NAMESPACE((byte) 10), |
| OBTAIN_DELEGATION_TOKEN((byte) 11); |
| |
| private byte permID; |
| |
| private static HashMap<Byte,SystemPermission> mapping; |
| static { |
| mapping = new HashMap<>(SystemPermission.values().length); |
| for (SystemPermission perm : SystemPermission.values()) |
| mapping.put(perm.permID, perm); |
| } |
| |
| private SystemPermission(byte id) { |
| this.permID = id; |
| } |
| |
| /** |
| * Gets the byte ID of this permission. |
| * |
| * @return byte ID |
| */ |
| public byte getId() { |
| return this.permID; |
| } |
| |
| /** |
| * Returns a list of printable permission values. |
| * |
| * @return list of system permission values, as "System." + permission name |
| */ |
| public static List<String> printableValues() { |
| SystemPermission[] a = SystemPermission.values(); |
| |
| List<String> list = new ArrayList<>(a.length); |
| |
| for (SystemPermission p : a) |
| list.add("System." + p); |
| |
| return list; |
| } |
| |
| /** |
| * Gets the permission matching the given byte ID. |
| * |
| * @param id |
| * byte ID |
| * @return system permission |
| * @throws IndexOutOfBoundsException |
| * if the byte ID is invalid |
| */ |
| public static SystemPermission getPermissionById(byte id) { |
| if (mapping.containsKey(id)) |
| return mapping.get(id); |
| throw new IndexOutOfBoundsException("No such permission"); |
| } |
| } |