Github user vanzin commented on a diff in the pull request:
https://github.com/apache/spark/pull/17723#discussion_r120758091
--- Diff:
resource-managers/yarn/src/main/scala/org/apache/spark/deploy/yarn/security/YARNConfigurableCredentialManager.scala
---
@@ -0,0 +1,87 @@
+/*
+ * 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.yarn.security
+
+import java.util.ServiceLoader
+
+import scala.collection.JavaConverters._
+
+import org.apache.hadoop.conf.Configuration
+import org.apache.hadoop.fs.FileSystem
+import org.apache.hadoop.security.Credentials
+
+import org.apache.spark.SparkConf
+import org.apache.spark.deploy.security.ConfigurableCredentialManager
+import org.apache.spark.internal.Logging
+import org.apache.spark.util.Utils
+
+
+/**
+ * This class loads credential providers registered under the YARN-specific
+ * [[ServiceCredentialProvider]] interface, as well as the builtin
credential providers defined
+ * in [[ConfigurableCredentialManager]].
+ */
+private[yarn] class YARNConfigurableCredentialManager(
+ sparkConf: SparkConf,
+ hadoopConf: Configuration,
+ fileSystems: Set[FileSystem]) extends Logging {
+
+ private val configurableCredentialManager =
+ new ConfigurableCredentialManager(sparkConf, hadoopConf, fileSystems)
+
+ // public for testing
+ val credentialProviders = getCredentialProviders
+
+ def obtainYARNCredentials(
+ hadoopConf: Configuration,
+ creds: Credentials): Long = {
+
+ val superInterval = configurableCredentialManager.obtainCredentials(
+ hadoopConf,
+ creds)
+
+ credentialProviders.values.flatMap { provider =>
+ if (provider.credentialsRequired(hadoopConf)) {
+ provider.obtainCredentials(hadoopConf, sparkConf, creds)
+ } else {
+ logDebug(s"Service ${provider.serviceName} does not require a
token." +
+ s" Check your configuration to see if security is disabled or
not.")
+ None
+ }
+ }.foldLeft(superInterval)(math.min)
+ }
+
+ private def getCredentialProviders:
+ Map[String, ServiceCredentialProvider] = {
+ val providers = loadCredentialProviders
+
+ providers.
+ filter { p =>
configurableCredentialManager.isServiceEnabled(p.serviceName) }
--- End diff --
Hmm... code reuse is nice and all, but this is deprecating the
configurations currently used by the YARN extensions for no good reason. Better
to keep a separate `isServiceEnabled` for this class, and then the other one
can be made private.
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