content: /*
   * Copyright (c) 2024, Alibaba Cloud;
   * Licensed 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 com.aliyun.dataworks.client.utils.spark.command;
  
  import java.io.IOException;
  import java.util.ArrayList;
  import java.util.List;
  import java.util.Map;
  
  /**
   * Command builder for internal Spark classes.
   * <p>
   * This class handles building the command to launch all internal Spark classes except for
   */
  class SparkClassCommandBuilder extends AbstractCommandBuilder {
  
      private final String className;
      private final List<String> classArgs;
  
      SparkClassCommandBuilder(String className, List<String> classArgs) {
          this.className = className;
          this.classArgs = classArgs;
      }
  
      @Override
      public List<String> buildCommand(Map<String, String> env)
          throws IOException, IllegalArgumentException {
          List<String> javaOptsKeys = new ArrayList<>();
          String memKey = null;
          String extraClassPath = null;
  
          // Master, Worker, HistoryServer, ExternalShuffleService, MesosClusterDispatcher use
          // SPARK_DAEMON_JAVA_OPTS (and specific opts) + SPARK_DAEMON_MEMORY.
          switch (className) {
              case "org.apache.spark.deploy.master.Master":
                  javaOptsKeys.add("SPARK_DAEMON_JAVA_OPTS");
                  javaOptsKeys.add("SPARK_MASTER_OPTS");
                  extraClassPath = getenv("SPARK_DAEMON_CLASSPATH");
                  memKey = "SPARK_DAEMON_MEMORY";
                  break;
              case "org.apache.spark.deploy.worker.Worker":
                  javaOptsKeys.add("SPARK_DAEMON_JAVA_OPTS");
                  javaOptsKeys.add("SPARK_WORKER_OPTS");
                  extraClassPath = getenv("SPARK_DAEMON_CLASSPATH");
                  memKey = "SPARK_DAEMON_MEMORY";
                  break;
              case "org.apache.spark.deploy.history.HistoryServer":
                  javaOptsKeys.add("SPARK_DAEMON_JAVA_OPTS");
                  javaOptsKeys.add("SPARK_HISTORY_OPTS");
                  extraClassPath = getenv("SPARK_DAEMON_CLASSPATH");
                  memKey = "SPARK_DAEMON_MEMORY";
                  break;
              case "org.apache.spark.executor.CoarseGrainedExecutorBackend":
                  javaOptsKeys.add("SPARK_EXECUTOR_OPTS");
                  memKey = "SPARK_EXECUTOR_MEMORY";
                  extraClassPath = getenv("SPARK_EXECUTOR_CLASSPATH");
                  break;
              case "org.apache.spark.executor.MesosExecutorBackend":
                  javaOptsKeys.add("SPARK_EXECUTOR_OPTS");
                  memKey = "SPARK_EXECUTOR_MEMORY";
                  extraClassPath = getenv("SPARK_EXECUTOR_CLASSPATH");
                  break;
              case "org.apache.spark.deploy.mesos.MesosClusterDispatcher":
                  javaOptsKeys.add("SPARK_DAEMON_JAVA_OPTS");
                  extraClassPath = getenv("SPARK_DAEMON_CLASSPATH");
                  memKey = "SPARK_DAEMON_MEMORY";
                  break;
              case "org.apache.spark.deploy.ExternalShuffleService":
              case "org.apache.spark.deploy.mesos.MesosExternalShuffleService":
                  javaOptsKeys.add("SPARK_DAEMON_JAVA_OPTS");
                  javaOptsKeys.add("SPARK_SHUFFLE_OPTS");
                  extraClassPath = getenv("SPARK_DAEMON_CLASSPATH");
                  memKey = "SPARK_DAEMON_MEMORY";
                  break;
              default:
                  memKey = "SPARK_DRIVER_MEMORY";
                  break;
          }
  
          List<String> cmd = buildJavaCommand(extraClassPath);
  
          for (String key : javaOptsKeys) {
              String envValue = System.getenv(key);
              if (!CommandBuilderUtils.isEmpty(envValue) && envValue.contains("Xmx")) {
                  String msg = String.format("%s is not allowed to specify max heap(Xmx) memory settings " +
                      "(was %s). Use the corresponding configuration instead.", key, envValue);
                  throw new IllegalArgumentException(msg);
              }
              addOptionString(cmd, envValue);
          }
  
          String mem = CommandBuilderUtils.firstNonEmpty(memKey != null ? System.getenv(memKey) : null, CommandBuilderUtils.DEFAULT_MEM);
          cmd.add("-Xmx" + mem);
          cmd.add(className);
          cmd.addAll(classArgs);
          return cmd;
      }
  
  }
  