spark PluginContextImpl 源码
spark PluginContextImpl 代码
文件路径：/core/src/main/scala/org/apache/spark/internal/plugin/PluginContextImpl.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.internal.plugin
import java.util
import com.codahale.metrics.MetricRegistry
import org.apache.spark.{SparkConf, SparkException}
import org.apache.spark.api.plugin.PluginContext
import org.apache.spark.internal.Logging
import org.apache.spark.metrics.MetricsSystem
import org.apache.spark.metrics.source.Source
import org.apache.spark.resource.ResourceInformation
import org.apache.spark.rpc.RpcEnv
import org.apache.spark.util.RpcUtils
private class PluginContextImpl(
pluginName: String,
rpcEnv: RpcEnv,
metricsSystem: MetricsSystem,
override val conf: SparkConf,
override val executorID: String,
override val resources: util.Map[String, ResourceInformation])
extends PluginContext with Logging {
override def hostname(): String = rpcEnv.address.hostPort.split(":")(0)
private val registry = new MetricRegistry()
private lazy val driverEndpoint = try {
RpcUtils.makeDriverRef(classOf[PluginEndpoint].getName(), conf, rpcEnv)
} catch {
case e: Exception =>
logWarning(s"Failed to create driver plugin endpoint ref.", e)
null
}
override def metricRegistry(): MetricRegistry = registry
override def send(message: AnyRef): Unit = {
if (driverEndpoint == null) {
throw new IllegalStateException("Driver endpoint is not known.")
}
driverEndpoint.send(PluginMessage(pluginName, message))
}
override def ask(message: AnyRef): AnyRef = {
try {
if (driverEndpoint != null) {
driverEndpoint.askSync[AnyRef](PluginMessage(pluginName, message))
} else {
throw new IllegalStateException("Driver endpoint is not known.")
}
} catch {
case e: SparkException if e.getCause() != null =>
throw e.getCause()
}
}
def registerMetrics(): Unit = {
if (!registry.getMetrics().isEmpty()) {
val src = new PluginMetricsSource(s"plugin.$pluginName", registry)
metricsSystem.registerSource(src)
}
}
class PluginMetricsSource(
override val sourceName: String,
override val metricRegistry: MetricRegistry)
extends Source
}
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