| /** |
| * 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.yarn.security; |
| |
| import java.util.List; |
| import java.util.Map; |
| import java.util.concurrent.ConcurrentHashMap; |
| import java.util.concurrent.ConcurrentMap; |
| import java.util.concurrent.locks.ReentrantReadWriteLock; |
| |
| import org.apache.hadoop.classification.InterfaceAudience.Private; |
| import org.apache.hadoop.classification.InterfaceStability.Unstable; |
| import org.apache.hadoop.conf.Configuration; |
| import org.apache.hadoop.security.UserGroupInformation; |
| import org.apache.hadoop.security.authorize.AccessControlList; |
| import org.apache.hadoop.yarn.conf.YarnConfiguration; |
| import org.apache.hadoop.yarn.security.PrivilegedEntity.EntityType; |
| |
| /** |
| * A YarnAuthorizationProvider implementation based on configuration files. |
| * |
| */ |
| @Private |
| @Unstable |
| public class ConfiguredYarnAuthorizer extends YarnAuthorizationProvider { |
| |
| private final ConcurrentMap<PrivilegedEntity, Map<AccessType, AccessControlList>> |
| allAcls = new ConcurrentHashMap<>(); |
| private volatile AccessControlList adminAcl = null; |
| private final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();; |
| private final ReentrantReadWriteLock.ReadLock readLock = lock.readLock(); |
| private final ReentrantReadWriteLock.WriteLock writeLock = lock.writeLock(); |
| |
| @Override |
| public void init(Configuration conf) { |
| adminAcl = |
| new AccessControlList(conf.get(YarnConfiguration.YARN_ADMIN_ACL, |
| YarnConfiguration.DEFAULT_YARN_ADMIN_ACL)); |
| } |
| |
| @Override |
| public void setPermission(List<Permission> permissions, |
| UserGroupInformation user) { |
| try { |
| writeLock.lock(); |
| for (Permission perm : permissions) { |
| allAcls.put(perm.getTarget(), perm.getAcls()); |
| } |
| } finally { |
| writeLock.unlock(); |
| } |
| } |
| |
| private boolean checkPermissionInternal(AccessType accessType, |
| PrivilegedEntity target, UserGroupInformation user) { |
| boolean ret = false; |
| Map<AccessType, AccessControlList> acls = allAcls.get(target); |
| if (acls != null) { |
| AccessControlList list = acls.get(accessType); |
| if (list != null) { |
| ret = list.isUserAllowed(user); |
| } |
| } |
| |
| // recursively look up the queue to see if parent queue has the permission. |
| if (target.getType() == EntityType.QUEUE && !ret) { |
| String queueName = target.getName(); |
| if (!queueName.contains(".")) { |
| return ret; |
| } |
| String parentQueueName = |
| queueName.substring(0, queueName.lastIndexOf(".")); |
| return checkPermissionInternal(accessType, |
| new PrivilegedEntity(target.getType(), parentQueueName), user); |
| } |
| return ret; |
| } |
| |
| @Override |
| public boolean checkPermission(AccessRequest accessRequest) { |
| try { |
| readLock.lock(); |
| return checkPermissionInternal(accessRequest.getAccessType(), |
| accessRequest.getEntity(), accessRequest.getUser()); |
| } finally { |
| readLock.unlock(); |
| } |
| } |
| |
| @Override |
| public void setAdmins(AccessControlList acls, UserGroupInformation ugi) { |
| adminAcl = acls; |
| } |
| |
| @Override |
| public boolean isAdmin(UserGroupInformation ugi) { |
| return adminAcl.isUserAllowed(ugi); |
| } |
| |
| public AccessControlList getAdminAcls() { |
| return this.adminAcl; |
| } |
| } |