content: package com.alibaba.csp.sentinel.metric.extension.callback;
  
  import com.alibaba.csp.sentinel.metric.extension.MetricExtension;
  import com.alibaba.csp.sentinel.slots.block.BlockException;
  
  /**
   * @author Carpenter Lee
   */
  class FakeMetricExtension implements MetricExtension {
      long pass = 0;
      long block = 0;
      long success = 0;
      long exception = 0;
      long rt = 0;
      long thread = 0;
  
      @Override
      public void addPass(String resource, int n, Object... args) {
          pass += n;
      }
  
      @Override
      public void addBlock(String resource, int n, String origin, BlockException ex, Object... args) {
          block += n;
      }
  
      @Override
      public void addSuccess(String resource, int n, Object... args) {
          success += n;
      }
  
      @Override
      public void addException(String resource, int n, Throwable t) {
          exception += n;
      }
  
      @Override
      public void addRt(String resource, long rt, Object... args) {
          this.rt += rt;
      }
  
      @Override
      public void increaseThreadNum(String resource, Object... args) {
          thread++;
      }
  
      @Override
      public void decreaseThreadNum(String resource, Object... args) {
          thread--;
      }
  }
  