content: /*
   * Copyright 1999-2018 Alibaba Group Holding Ltd.
   *
   * 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.alibaba.csp.sentinel.cluster.flow.statistic.data;
  
  import java.util.concurrent.atomic.LongAdder;
  
  /**
   * @author Eric Zhao
   * @since 1.4.0
   */
  public class ClusterMetricBucket {
  
      private final LongAdder[] counters;
  
      public ClusterMetricBucket() {
          ClusterFlowEvent[] events = ClusterFlowEvent.values();
          this.counters = new LongAdder[events.length];
          for (ClusterFlowEvent event : events) {
              counters[event.ordinal()] = new LongAdder();
          }
      }
  
      public void reset() {
          for (ClusterFlowEvent event : ClusterFlowEvent.values()) {
              counters[event.ordinal()].reset();
          }
      }
  
      public long get(ClusterFlowEvent event) {
          return counters[event.ordinal()].sum();
      }
  
      public ClusterMetricBucket add(ClusterFlowEvent event, long count) {
          counters[event.ordinal()].add(count);
          return this;
      }
  }
  