feign.metrics4.MetricSuppliers Maven / Gradle / Ivy

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/*
 * Copyright © 2012 The Feign Authors ([email protected])
 *
 * Licensed 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 feign.metrics4;

import com.codahale.metrics.Histogram;
import com.codahale.metrics.Meter;
import com.codahale.metrics.MetricRegistry;
import com.codahale.metrics.SlidingTimeWindowArrayReservoir;
import com.codahale.metrics.Timer;
import java.util.concurrent.TimeUnit;

public class MetricSuppliers {

  public MetricRegistry.MetricSupplier timers() {
    // only keep timer data for 1 minute
    return () -> new Timer(new SlidingTimeWindowArrayReservoir(1, TimeUnit.MINUTES));
  }

  public MetricRegistry.MetricSupplier meters() {
    return Meter::new;
  }

  public MetricRegistry.MetricSupplier histograms() {
    // only keep timer data for 1 minute
    return () -> new Histogram(new SlidingTimeWindowArrayReservoir(1, TimeUnit.MINUTES));
  }
}