| /* |
| * 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.livy.repl |
| |
| import scala.concurrent.Await |
| import scala.concurrent.duration.Duration |
| |
| import io.netty.channel.ChannelHandlerContext |
| import org.apache.spark.SparkConf |
| |
| import org.apache.livy.{EOLUtils, Logging} |
| import org.apache.livy.client.common.ClientConf |
| import org.apache.livy.rsc.{BaseProtocol, ReplJobResults, RSCConf} |
| import org.apache.livy.rsc.BaseProtocol.ReplState |
| import org.apache.livy.rsc.driver._ |
| import org.apache.livy.rsc.rpc.Rpc |
| import org.apache.livy.sessions._ |
| |
| class ReplDriver(conf: SparkConf, livyConf: RSCConf) |
| extends RSCDriver(conf, livyConf) |
| with Logging { |
| |
| private[repl] var session: Session = _ |
| |
| override protected def initializeSparkEntries(): SparkEntries = { |
| session = new Session(livyConf = livyConf, |
| sparkConf = conf, |
| stateChangedCallback = { s => broadcast(new ReplState(s.toString)) }) |
| Await.result(session.start(), Duration.Inf) |
| } |
| |
| override protected def shutdownContext(): Unit = { |
| if (session != null) { |
| try { |
| session.close() |
| } finally { |
| super.shutdownContext() |
| } |
| } |
| } |
| |
| def handle(ctx: ChannelHandlerContext, msg: BaseProtocol.ReplJobRequest): Int = { |
| session.execute(EOLUtils.convertToSystemEOL(msg.code), msg.codeType) |
| } |
| |
| def handle(ctx: ChannelHandlerContext, msg: BaseProtocol.CancelReplJobRequest): Unit = { |
| session.cancel(msg.id) |
| } |
| |
| def handle(ctx: ChannelHandlerContext, msg: BaseProtocol.ReplCompleteRequest): Array[String] = { |
| session.complete(EOLUtils.convertToSystemEOL(msg.code), msg.codeType, msg.cursor) |
| } |
| |
| /** |
| * Return statement results. Results are sorted by statement id. |
| */ |
| def handle(ctx: ChannelHandlerContext, msg: BaseProtocol.GetReplJobResults): ReplJobResults = { |
| val statements = if (msg.allResults) { |
| session.statements.values.toArray |
| } else { |
| assert(msg.from != null) |
| assert(msg.size != null) |
| if (msg.size == 1) { |
| session.statements.get(msg.from).toArray |
| } else { |
| val until = msg.from + msg.size |
| session.statements.filterKeys(id => id >= msg.from && id < until).values.toArray |
| } |
| } |
| |
| // Update progress of statements when queried |
| statements.foreach { s => |
| s.updateProgress(session.progressOfStatement(s.id)) |
| } |
| |
| new ReplJobResults(statements.sortBy(_.id)) |
| } |
| |
| override protected def createWrapper(msg: BaseProtocol.BypassJobRequest): BypassJobWrapper = { |
| Kind(msg.jobType) match { |
| case PySpark if session.interpreter(PySpark).isDefined => |
| new BypassJobWrapper(this, msg.id, |
| new BypassPySparkJob(msg.serializedJob, |
| session.interpreter(PySpark).get.asInstanceOf[PythonInterpreter])) |
| case _ => super.createWrapper(msg) |
| } |
| } |
| |
| override protected def addFile(path: String): Unit = { |
| if (!ClientConf.TEST_MODE) { |
| session.interpreter(PySpark).foreach { _.asInstanceOf[PythonInterpreter].addFile(path) } |
| } |
| super.addFile(path) |
| } |
| |
| override protected def addJarOrPyFile(path: String): Unit = { |
| if (!ClientConf.TEST_MODE) { |
| session.interpreter(PySpark) |
| .foreach { _.asInstanceOf[PythonInterpreter].addPyFile(this, conf, path) } |
| } |
| super.addJarOrPyFile(path) |
| } |
| |
| override protected def onClientAuthenticated(client: Rpc): Unit = { |
| if (session != null) { |
| client.call(new ReplState(session.state.toString)) |
| } |
| } |
| } |