hadoop ReservationsACLsManager 源码
haddop ReservationsACLsManager 代码
文件路径：/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-resourcemanager/src/main/java/org/apache/hadoop/yarn/server/resourcemanager/security/ReservationsACLsManager.java
/**
* 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.server.resourcemanager.security;
import org.apache.hadoop.conf.Configuration;
import org.apache.hadoop.security.UserGroupInformation;
import org.apache.hadoop.security.authorize.AccessControlList;
import org.apache.hadoop.yarn.api.records.ReservationACL;
import org.apache.hadoop.yarn.conf.YarnConfiguration;
import org.apache.hadoop.yarn.exceptions.YarnException;
import java.util.HashMap;
import java.util.Map;
/**
* The {@link ReservationsACLsManager} is used to check a specified user's
* permissons to perform a reservation operation on the
* {@link ReservationACL}s are used to specify reservation operations.
*/
@SuppressWarnings("checkstyle:visibilitymodifier")
public abstract class ReservationsACLsManager {
private boolean isReservationACLsEnable;
Map<String, Map<ReservationACL, AccessControlList>> reservationAcls =
new HashMap<>();
public ReservationsACLsManager(Configuration conf) throws YarnException {
this.isReservationACLsEnable = conf.getBoolean(
YarnConfiguration.YARN_RESERVATION_ACL_ENABLE,
YarnConfiguration.DEFAULT_YARN_RESERVATION_ACL_ENABLE)
&& conf.getBoolean(YarnConfiguration.YARN_ACL_ENABLE,
YarnConfiguration.DEFAULT_YARN_ACL_ENABLE);
}
public boolean checkAccess(UserGroupInformation callerUGI,
ReservationACL acl, String queueName) {
if (!isReservationACLsEnable) {
return true;
}
if (this.reservationAcls.containsKey(queueName)) {
Map<ReservationACL, AccessControlList> acls = this.reservationAcls.get(
queueName);
if (acls != null && acls.containsKey(acl)) {
return acls.get(acl).isUserAllowed(callerUGI);
} else {
// Give access if acl is undefined for queue.
return true;
}
}
return false;
}
}
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