package com.atlassian.vcache.internal.core.metrics;
   
   import com.atlassian.vcache.internal.LongMetric;
   import com.atlassian.vcache.internal.MetricLabel;
   import com.atlassian.vcache.internal.RequestMetrics;
   
   import java.util.Map;
   
   import static java.util.Collections.emptyMap;
  
  /**
   * An implementation of {@link RequestMetrics} that has nothing.
   *
   * @since 1.0.0
   */
  public class EmptyRequestMetrics implements RequestMetrics {
      @Override
      public Map<String, Map<MetricLabel, ? extends LongMetric>> allJvmCacheLongMetrics() {
          return emptyMap();
      }
  
      @Override
      public Map<String, Map<MetricLabel, ? extends LongMetric>> allRequestCacheLongMetrics() {
          return emptyMap();
      }
  
      @Override
      public Map<String, Map<MetricLabel, ? extends LongMetric>> allExternalCacheLongMetrics() {
          return emptyMap();
      }
  }