Java tutorial
/* * 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.zookeeper; import edu.umd.cs.findbugs.annotations.SuppressFBWarnings; import java.util.ArrayList; import java.util.Collections; import org.apache.yetus.audience.InterfaceAudience; import org.apache.zookeeper.data.ACL; import org.apache.zookeeper.data.Id; @InterfaceAudience.Public public class ZooDefs { public static final String CONFIG_NODE = "/zookeeper/config"; public static final String ZOOKEEPER_NODE_SUBTREE = "/zookeeper/"; @InterfaceAudience.Public public interface OpCode { int notification = 0; int create = 1; int delete = 2; int exists = 3; int getData = 4; int setData = 5; int getACL = 6; int setACL = 7; int getChildren = 8; int sync = 9; int ping = 11; int getChildren2 = 12; int check = 13; int multi = 14; int create2 = 15; int reconfig = 16; int checkWatches = 17; int removeWatches = 18; int createContainer = 19; int deleteContainer = 20; int createTTL = 21; int multiRead = 22; int auth = 100; int setWatches = 101; int sasl = 102; int getEphemerals = 103; int getAllChildrenNumber = 104; int setWatches2 = 105; int addWatch = 106; int createSession = -10; int closeSession = -11; int error = -1; } @InterfaceAudience.Public public interface Perms { int READ = 1 << 0; int WRITE = 1 << 1; int CREATE = 1 << 2; int DELETE = 1 << 3; int ADMIN = 1 << 4; int ALL = READ | WRITE | CREATE | DELETE | ADMIN; } @InterfaceAudience.Public public interface Ids { /** * This Id represents anyone. */ Id ANYONE_ID_UNSAFE = new Id("world", "anyone"); /** * This Id is only usable to set ACLs. It will get substituted with the * Id's the client authenticated with. */ Id AUTH_IDS = new Id("auth", ""); /** * This is a completely open ACL . */ @SuppressFBWarnings(value = "MS_MUTABLE_COLLECTION", justification = "Cannot break API") ArrayList<ACL> OPEN_ACL_UNSAFE = new ArrayList<ACL>( Collections.singletonList(new ACL(Perms.ALL, ANYONE_ID_UNSAFE))); /** * This ACL gives the creators authentication id's all permissions. */ @SuppressFBWarnings(value = "MS_MUTABLE_COLLECTION", justification = "Cannot break API") ArrayList<ACL> CREATOR_ALL_ACL = new ArrayList<ACL>( Collections.singletonList(new ACL(Perms.ALL, AUTH_IDS))); /** * This ACL gives the world the ability to read. */ @SuppressFBWarnings(value = "MS_MUTABLE_COLLECTION", justification = "Cannot break API") ArrayList<ACL> READ_ACL_UNSAFE = new ArrayList<ACL>( Collections.singletonList(new ACL(Perms.READ, ANYONE_ID_UNSAFE))); } @InterfaceAudience.Public public interface AddWatchModes { int persistent = 0; // matches AddWatchMode.PERSISTENT int persistentRecursive = 1; // matches AddWatchMode.PERSISTENT_RECURSIVE } public static final String[] opNames = { "notification", "create", "delete", "exists", "getData", "setData", "getACL", "setACL", "getChildren", "getChildren2", "getMaxChildren", "setMaxChildren", "ping", "reconfig", "getConfig" }; }