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
   *
   *     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.alibaba.metrics;
  
  /**
   * enum的数值不能为负数，且不能太大
   */
  public enum MetricLevel {
  
      TRIVIAL, // 轻微指标
  
      MINOR,   // 次要指标
  
      NORMAL,  // 一般指标
  
      MAJOR,   // 重要指标
  
      CRITICAL; // 关键指标
  
      static {
          for (MetricLevel level : MetricLevel.values()) {
              if (level.ordinal() < 0) {
                  throw new RuntimeException("MetricLevel can not < 0");
              }
          }
      }
  
      public static int getMaxValue() {
          MetricLevel[] levels = MetricLevel.values();
          int max = levels[0].ordinal();
          for (MetricLevel level : levels) {
              int value = level.ordinal();
              if (value > max) {
                  max = value;
              }
          }
          return max;
      }
  }
  