Class NoopMetricSink

api/src/testFixtures/java/io/grpc/NoopMetricSink.java:27–49

A MetricSink that discards all records.

 * A MetricSink that discards all records.
 */
public class NoopMetricSink implements MetricSink {
  private int size;

  @Override
  public Map<String, Boolean> getEnabledMetrics() {
    return Collections.emptyMap();
  }

  @Override
  public Set<String> getOptionalLabels() {
    return Collections.emptySet();
  }

  @Override
  public synchronized int getMeasuresSize() {
    return size;
  }

  @Override
  public synchronized void updateMeasures(List<MetricInstrument> instruments) {
    size = instruments.size();
  }
}