content: /*
   * 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
   *
   *    https://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.bigtop.manager.common.shell;
  
  import lombok.extern.slf4j.Slf4j;
  
  import java.util.Set;
  import java.util.concurrent.ConcurrentHashMap;
  
  /**
   * process manage container
   */
  @Slf4j
  public class ProcessContainer extends ConcurrentHashMap<Integer, Process> {
  
      private static final ProcessContainer container = new ProcessContainer();
  
      private ProcessContainer() {
          super();
      }
  
      public static ProcessContainer getInstance() {
          return container;
      }
  
      public static void putProcess(Process process) {
          getInstance().put(process.hashCode(), process);
      }
  
      public static int processSize() {
          return getInstance().size();
      }
  
      public static void removeProcess(Process process) {
          getInstance().remove(process.hashCode());
      }
  
      public static void destroyAllProcess() {
          Set<Entry<Integer, Process>> set = getInstance().entrySet();
          for (Entry<Integer, Process> entry : set) {
              try {
                  entry.getValue().destroy();
              } catch (Exception e) {
                  log.error("Destroy All Processes error", e);
              }
          }
  
          log.info("close " + set.size() + " executing process tasks");
      }
  }
  