spark HadoopConfDriverFeatureStep 源码

spark HadoopConfDriverFeatureStep 代码

文件路径：/resource-managers/kubernetes/core/src/main/scala/org/apache/spark/deploy/k8s/features/HadoopConfDriverFeatureStep.scala

/*
 * 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.k8s.features

import java.io.File
import java.nio.charset.StandardCharsets

import scala.collection.JavaConverters._

import com.google.common.io.Files
import io.fabric8.kubernetes.api.model._

import org.apache.spark.deploy.k8s.{KubernetesConf, KubernetesUtils, SparkPod}
import org.apache.spark.deploy.k8s.Config._
import org.apache.spark.deploy.k8s.Constants._

/**
 * Mounts the Hadoop configuration - either a pre-defined config map, or a local configuration
 * directory - on the driver pod.
 */
private[spark] class HadoopConfDriverFeatureStep(conf: KubernetesConf)
  extends KubernetesFeatureConfigStep {

  private val confDir = Option(conf.sparkConf.getenv(ENV_HADOOP_CONF_DIR))
  private val existingConfMap = conf.get(KUBERNETES_HADOOP_CONF_CONFIG_MAP)

  KubernetesUtils.requireNandDefined(
    confDir,
    existingConfMap,
    "Do not specify both the `HADOOP_CONF_DIR` in your ENV and the ConfigMap " +
    "as the creation of an additional ConfigMap, when one is already specified is extraneous")

  private lazy val confFiles: Seq[File] = {
    val dir = new File(confDir.get)
    if (dir.isDirectory) {
      dir.listFiles.filter(_.isFile).toSeq
    } else {
      Nil
    }
  }

  private def newConfigMapName: String = s"${conf.resourceNamePrefix}-hadoop-config"

  private def hasHadoopConf: Boolean = confDir.isDefined || existingConfMap.isDefined

  override def configurePod(original: SparkPod): SparkPod = {
    original.transform { case pod if hasHadoopConf =>
      val confVolume = if (confDir.isDefined) {
        val keyPaths = confFiles.map { file =>
          new KeyToPathBuilder()
            .withKey(file.getName())
            .withPath(file.getName())
            .build()
        }
        new VolumeBuilder()
          .withName(HADOOP_CONF_VOLUME)
          .withNewConfigMap()
            .withName(newConfigMapName)
            .withItems(keyPaths.asJava)
            .endConfigMap()
          .build()
      } else {
        new VolumeBuilder()
          .withName(HADOOP_CONF_VOLUME)
          .withNewConfigMap()
            .withName(existingConfMap.get)
            .endConfigMap()
          .build()
      }

      val podWithConf = new PodBuilder(pod.pod)
        .editSpec()
          .addNewVolumeLike(confVolume)
            .endVolume()
          .endSpec()
          .build()

      val containerWithMount = new ContainerBuilder(pod.container)
        .addNewVolumeMount()
          .withName(HADOOP_CONF_VOLUME)
          .withMountPath(HADOOP_CONF_DIR_PATH)
          .endVolumeMount()
        .addNewEnv()
          .withName(ENV_HADOOP_CONF_DIR)
          .withValue(HADOOP_CONF_DIR_PATH)
          .endEnv()
        .build()

      SparkPod(podWithConf, containerWithMount)
    }
  }

  override def getAdditionalKubernetesResources(): Seq[HasMetadata] = {
    if (confDir.isDefined) {
      val fileMap = confFiles.map { file =>
        (file.getName(), Files.toString(file, StandardCharsets.UTF_8))
      }.toMap.asJava

      Seq(new ConfigMapBuilder()
        .withNewMetadata()
          .withName(newConfigMapName)
          .endMetadata()
        .withImmutable(true)
        .addToData(fileMap)
        .build())
    } else {
      Nil
    }
  }

}

相关信息

spark 源码目录

相关文章

spark BasicDriverFeatureStep 源码

spark BasicExecutorFeatureStep 源码

spark DriverCommandFeatureStep 源码

spark DriverKubernetesCredentialsFeatureStep 源码

spark DriverServiceFeatureStep 源码

spark EnvSecretsFeatureStep 源码

spark ExecutorKubernetesCredentialsFeatureStep 源码

spark KerberosConfDriverFeatureStep 源码

spark KubernetesDriverCustomFeatureConfigStep 源码

spark KubernetesExecutorCustomFeatureConfigStep 源码