gaborgsomogyi commented on a change in pull request #18664: URL: https://github.com/apache/flink/pull/18664#discussion_r803614366
########## File path: flink-runtime/src/main/java/org/apache/flink/runtime/security/token/DelegationTokenManager.java ########## @@ -0,0 +1,119 @@ +/* + * 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.runtime.security.token; + +import org.apache.flink.configuration.Configuration; + +import org.apache.hadoop.security.Credentials; +import org.slf4j.Logger; +import org.slf4j.LoggerFactory; + +import java.util.HashMap; +import java.util.Iterator; +import java.util.Map; +import java.util.ServiceLoader; + +import static org.apache.flink.util.Preconditions.checkNotNull; + +/** + * Manager for delegation tokens in a Flink cluster. + * + * <p>When delegation token renewal is enabled, this manager will make sure long-running apps can + * run without interruption while accessing secured services. It periodically logs in to the KDC + * with user-provided credentials, and contacts all the configured secure services to obtain + * delegation tokens to be distributed to the rest of the application. + */ +public class DelegationTokenManager { + + private static final Logger LOG = LoggerFactory.getLogger(DelegationTokenManager.class); + + private final Configuration configuration; + + final Map<String, DelegationTokenProvider> delegationTokenProviders; + + public DelegationTokenManager(Configuration configuration) { + this.configuration = checkNotNull(configuration, "Flink configuration must not be null"); Review comment: This code is just dropped so the comment is outdated. -- This is an automated message from the Apache Git Service. To respond to the message, please log on to GitHub and use the URL above to go to the specific comment. To unsubscribe, e-mail: issues-unsubscr...@flink.apache.org For queries about this service, please contact Infrastructure at: us...@infra.apache.org
