package com.atlassian.vcache.internal.core.metrics;
   
   import com.atlassian.marshalling.api.MarshallingPair;
   import com.atlassian.vcache.DirectExternalCache;
   import com.atlassian.vcache.JvmCache;
   import com.atlassian.vcache.RequestCache;
   import com.atlassian.vcache.StableReadExternalCache;
   import com.atlassian.vcache.TransactionalExternalCache;
   import com.atlassian.vcache.internal.MetricLabel;
  import com.atlassian.vcache.internal.RequestContext;
  import com.atlassian.vcache.internal.RequestMetrics;
  import com.atlassian.vcache.internal.core.TransactionControl;
  
  /**
   * An implementation of {@link MetricsCollector} that collects nothing.
   *
   * @since 1.0.0
   */
  public class NoopMetricsCollector implements MetricsCollector {
      @Override
      public void record(String cacheName, CacheType cacheType, MetricLabel metricLabel, long sample) {
      }
  
      @Override
      public RequestMetrics obtainRequestMetrics(RequestContext requestContext) {
          return new EmptyRequestMetrics();
      }
  
      @Override
      public TransactionControl wrap(TransactionControl control, String cacheName) {
          return control;
      }
  
      @Override
      public <T> MarshallingPair<T> wrap(MarshallingPair<T> marshalling, String cacheName) {
          return marshalling;
      }
  
      @Override
      public <K, V> JvmCache<K, V> wrap(JvmCache<K, V> cache) {
          return cache;
      }
  
      @Override
      public <K, V> RequestCache<K, V> wrap(RequestCache<K, V> cache) {
          return cache;
      }
  
      @Override
      public <V> DirectExternalCache<V> wrap(DirectExternalCache<V> cache) {
          return cache;
      }
  
      @Override
      public <V> StableReadExternalCache<V> wrap(StableReadExternalCache<V> cache) {
          return cache;
      }
  
      @Override
      public <V> TransactionalExternalCache<V> wrap(TransactionalExternalCache<V> cache) {
          return cache;
      }
  }