content: /*
   * Copyright [2021-present] [ahoo wang <ahoowang@qq.com> (https://github.com/Ahoo-Wang)].
   * 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 me.ahoo.cosid.util;
  
  import com.google.errorprone.annotations.Immutable;
  
  import java.lang.management.ManagementFactory;
  
  /**
   * get current process id .
   *
   * @author ahoo wang
   */
  @Immutable
  public enum ProcessId {
      CURRENT;
      
      private final int processId;
      
      ProcessId() {
          this.processId = getCurrentProcessId();
      }
      
      public int getProcessId() {
          return processId;
      }
      
      /**
       * get current process name .
       *
       * @return process name
       */
      public static String getCurrentProcessName() {
          return ManagementFactory.getRuntimeMXBean().getName();
      }
      
      /**
       * get current process id .
       *
       * @return process id
       */
      public static int getCurrentProcessId() {
          String processName = getCurrentProcessName();
          String processIdStr = processName.split("@")[0];
          return Integer.parseInt(processIdStr);
      }
  }
  