JackWangCS commented on a change in pull request #14841: URL: https://github.com/apache/flink/pull/14841#discussion_r633702422
########## File path: flink-yarn/src/main/java/org/apache/flink/yarn/security/HadoopDelegationTokenManager.java ########## @@ -0,0 +1,96 @@ +/* + * 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.flink.yarn.security; + +import org.apache.flink.annotation.VisibleForTesting; +import org.apache.flink.runtime.security.delegationtokens.HadoopDelegationTokenConfiguration; +import org.apache.flink.runtime.security.delegationtokens.HadoopDelegationTokenProvider; + +import org.apache.hadoop.security.Credentials; +import org.slf4j.Logger; +import org.slf4j.LoggerFactory; + +import java.util.ArrayList; +import java.util.Iterator; +import java.util.List; +import java.util.ServiceLoader; + +/** + * HadoopDelegationTokenManager is responsible for managing delegation tokens. It can be used to + * obtain delegation tokens by calling `obtainDelegationTokens` method. + */ +public class HadoopDelegationTokenManager { + private static final Logger LOG = LoggerFactory.getLogger(HadoopDelegationTokenManager.class); + + private final HadoopDelegationTokenConfiguration hadoopDelegationTokenConf; + private final List<HadoopDelegationTokenProvider> delegationTokenProviders; + + public HadoopDelegationTokenManager( + HadoopDelegationTokenConfiguration hadoopDelegationTokenConf) { + this.hadoopDelegationTokenConf = hadoopDelegationTokenConf; + delegationTokenProviders = loadProviders(); + } + + /** + * Obtain delegation tokens using HadoopDelegationProviders, and store them in the give + * credentials. + * + * @param credentials Credentials object where to store the delegation tokens. + */ + public void obtainDelegationTokens(Credentials credentials) { + delegationTokenProviders.forEach( + provider -> { + if (provider.delegationTokensRequired()) { + provider.obtainDelegationTokens(credentials); + } else { + LOG.info( + "Service {} does not need to require a token,", + provider.serviceName()); + } + }); + } + + private List<HadoopDelegationTokenProvider> loadProviders() { + ServiceLoader<HadoopDelegationTokenProvider> serviceLoader = + ServiceLoader.load(HadoopDelegationTokenProvider.class); + + List<HadoopDelegationTokenProvider> providers = new ArrayList<>(); + + Iterator<HadoopDelegationTokenProvider> providerIterator = serviceLoader.iterator(); + providerIterator.forEachRemaining( + provider -> { + try { + provider.init(hadoopDelegationTokenConf); Review comment: I added a debug log for this, I don't want to print log in a verbose way. For each provider, it will print some information about this. ``` INFO org.apache.flink.yarn.Utils [] - Obtaining delegation tokens... DEBUG org.apache.flink.yarn.security.HadoopDelegationTokenManager [] - Delegation provider hbase loaded and initialized DEBUG org.apache.flink.yarn.security.HadoopDelegationTokenManager [] - Delegation provider hadoopfs loaded and initialized INFO org.apache.flink.yarn.security.HBaseDelegationTokenProvider [] - HBase is not available (not packaged with this application): ClassNotFoundException : "org.apache.hadoop.hbase.HBaseConfiguration". INFO org.apache.flink.yarn.security.HadoopDelegationTokenManager [] - Service hbase does not need to require a token. INFO org.apache.flink.yarn.security.HadoopFSDelegationTokenProvider [] - Getting FS token for: viewfs://cluster14/ with renewer yarn INFO org.apache.hadoop.hdfs.DFSClient [] - Created token for test: HDFS_DELEGATION_TOKEN owner=test, renewer=yarn, realUser=, issueDate=1621268501397, maxDate=1621873301397, sequenceNumber=26153859, masterKeyId=726 on ha-hdfs:apstore INFO org.apache.hadoop.hdfs.DFSClient [] - Created token for test: HDFS_DELEGATION_TOKEN owner=test, renewer=yarn, realUser=, issueDate=1621268501434, maxDate=1621873301434, sequenceNumber=10388618, masterKeyId=252 on ha-hdfs:warehousextab INFO org.apache.hadoop.hdfs.DFSClient [] - Created token for test: HDFS_DELEGATION_TOKEN owner=test, renewer=yarn, realUser=, issueDate=1621268501489, maxDate=1621873301489, sequenceNumber=86464794, masterKeyId=729 on ha-hdfs:warehousestore INFO org.apache.hadoop.hdfs.DFSClient [] - Created token for test: HDFS_DELEGATION_TOKEN owner=test, renewer=yarn, realUser=, issueDate=1621268501506, maxDate=1621873301506, sequenceNumber=10343224, masterKeyId=255 on ha-hdfs:warehousextac INFO org.apache.hadoop.hdfs.DFSClient [] - Created token for test: HDFS_DELEGATION_TOKEN owner=test, renewer=yarn, realUser=, issueDate=1621268501524, maxDate=1621873301524, sequenceNumber=10340707, masterKeyId=249 on ha-hdfs:warehousextaa INFO org.apache.hadoop.hdfs.DFSClient [] - Created token for test: HDFS_DELEGATION_TOKEN owner=test, renewer=yarn, realUser=, issueDate=1621268501528, maxDate=1621873301528, sequenceNumber=421001249, masterKeyId=714 on ha-hdfs:beaconstore INFO org.apache.flink.yarn.YarnClusterDescriptor [] - Submitting application master application_1620874570676_200951 ``` -- This is an automated message from the Apache Git Service. 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