content: /*
   * Licensed to the Apache Software Foundation (ASF) under one
   * or more contributor license agreements.  See the NOTICE file
   * distributed with this work for additional information
   * regarding copyright ownership.  The ASF licenses this file
   * to you 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.datastax.oss.driver.internal.core.metrics;
  
  import com.datastax.oss.driver.api.core.metrics.NodeMetric;
  import java.util.concurrent.TimeUnit;
  import net.jcip.annotations.ThreadSafe;
  
  @ThreadSafe
  public class NoopNodeMetricUpdater implements NodeMetricUpdater {
  
    public static NoopNodeMetricUpdater INSTANCE = new NoopNodeMetricUpdater();
  
    private NoopNodeMetricUpdater() {}
  
    @Override
    public void incrementCounter(NodeMetric metric, String profileName, long amount) {
      // nothing to do
    }
  
    @Override
    public void updateHistogram(NodeMetric metric, String profileName, long value) {
      // nothing to do
    }
  
    @Override
    public void markMeter(NodeMetric metric, String profileName, long amount) {
      // nothing to do
    }
  
    @Override
    public void updateTimer(NodeMetric metric, String profileName, long duration, TimeUnit unit) {
      // nothing to do
    }
  
    @Override
    public boolean isEnabled(NodeMetric metric, String profileName) {
      // since methods don't do anything, return false
      return false;
    }
  
    @Override
    public void clearMetrics() {
      // nothing to do
    }
  }
  