Github user gaborgsomogyi commented on a diff in the pull request: https://github.com/apache/spark/pull/22598#discussion_r233858735 --- Diff: core/src/main/scala/org/apache/spark/deploy/security/KafkaTokenUtil.scala --- @@ -0,0 +1,146 @@ +/* + * 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.spark.deploy.security + +import java.text.SimpleDateFormat +import java.util.Properties + +import org.apache.hadoop.io.Text +import org.apache.hadoop.security.token.{Token, TokenIdentifier} +import org.apache.hadoop.security.token.delegation.AbstractDelegationTokenIdentifier +import org.apache.kafka.clients.CommonClientConfigs +import org.apache.kafka.clients.admin.{AdminClient, CreateDelegationTokenOptions} +import org.apache.kafka.common.config.SaslConfigs +import org.apache.kafka.common.security.token.delegation.DelegationToken + +import org.apache.spark.SparkConf +import org.apache.spark.internal.Logging +import org.apache.spark.internal.config._ + +private[spark] object KafkaTokenUtil extends Logging { + private[spark] val TOKEN_KIND = new Text("KAFKA_DELEGATION_TOKEN") + private[spark] val TOKEN_SERVICE = new Text("kafka.server.delegation.token") + + private[spark] class KafkaDelegationTokenIdentifier extends AbstractDelegationTokenIdentifier { + override def getKind: Text = TOKEN_KIND; + } + + private[security] def obtainToken(sparkConf: SparkConf): (Token[_ <: TokenIdentifier], Long) = { + val adminClient = AdminClient.create(createAdminClientProperties(sparkConf)) + val createDelegationTokenOptions = new CreateDelegationTokenOptions() + val createResult = adminClient.createDelegationToken(createDelegationTokenOptions) + val token = createResult.delegationToken().get() + printToken(token) + + (new Token[KafkaDelegationTokenIdentifier]( + token.tokenInfo.tokenId.getBytes, + token.hmacAsBase64String.getBytes, + TOKEN_KIND, + TOKEN_SERVICE + ), token.tokenInfo.expiryTimestamp) + } + + private[security] def createAdminClientProperties(sparkConf: SparkConf): Properties = { + val adminClientProperties = new Properties + + val bootstrapServers = sparkConf.get(KAFKA_BOOTSTRAP_SERVERS) + require(bootstrapServers.nonEmpty, s"Tried to obtain kafka delegation token but bootstrap " + + "servers not configured.") + adminClientProperties.put(CommonClientConfigs.BOOTSTRAP_SERVERS_CONFIG, bootstrapServers.get) + + val protocol = sparkConf.get(KAFKA_SECURITY_PROTOCOL) + adminClientProperties.put(CommonClientConfigs.SECURITY_PROTOCOL_CONFIG, protocol) + if (protocol.endsWith("SSL")) { + logInfo("SSL protocol detected.") --- End diff -- Fixed.
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