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 org.apache.calcite.avatica.metrics.dropwizard;
  
  import org.apache.calcite.avatica.metrics.Counter;
  import org.apache.calcite.avatica.metrics.Gauge;
  import org.apache.calcite.avatica.metrics.Histogram;
  import org.apache.calcite.avatica.metrics.Meter;
  import org.apache.calcite.avatica.metrics.MetricsSystem;
  import org.apache.calcite.avatica.metrics.Timer;
  
  import com.codahale.metrics.MetricRegistry;
  
  import java.util.Objects;
  
  /**
   * Dropwizard Metrics implementation of {@link MetricsSystem}.
   */
  public class DropwizardMetricsSystem implements MetricsSystem {
  
    private final MetricRegistry registry;
  
    public DropwizardMetricsSystem(MetricRegistry registry) {
      this.registry = Objects.requireNonNull(registry);
    }
  
    @Override public Timer getTimer(String name) {
      return new DropwizardTimer(registry.timer(name));
    }
  
    @Override public Histogram getHistogram(String name) {
      return new DropwizardHistogram(registry.histogram(name));
    }
  
    @Override public Meter getMeter(String name) {
      return new DropwizardMeter(registry.meter(name));
    }
  
    @Override public Counter getCounter(String name) {
      return new DropwizardCounter(registry.counter(name));
    }
  
    @Override public <T> void register(String name, Gauge<T> gauge) {
      registry.register(name, new DropwizardGauge<T>(gauge));
    }
  }
  
  // End DropwizardMetricsSystem.java
  