D-Net

package eu.dnetlib.metrics;

import java.util.Collections;

import java.util.List;

import io.micrometer.core.instrument.DistributionSummary;

import io.micrometer.core.instrument.MeterRegistry;

import org.apache.commons.logging.Log;

import org.apache.commons.logging.LogFactory;

import org.springframework.beans.factory.annotation.Autowired;

import org.springframework.stereotype.Controller;

import org.springframework.web.bind.annotation.RequestMapping;

import org.springframework.web.bind.annotation.RequestMethod;

import org.springframework.web.bind.annotation.ResponseBody;

/**

 * Created by Alessia Bardi on 2019-06-21.

 *

 * @author Alessia Bardi

 */

@Controller

public final class TestController {

	private static final Log log = LogFactory.getLog(TestController.class);

	private final DistributionSummary counter;

	@Autowired

	public TestController(final MeterRegistry registry) {

		this.counter = DistributionSummary.builder("get.counter.requests")

				.tags("version", "v1")

				.publishPercentileHistogram()

				.register(registry);

	}

	@RequestMapping(value = "/test", method = RequestMethod.GET)

	@ResponseBody

	public List<String> getStudents() {

		log.info("/test [GET]");

		counter.record(10.0); // <-- We shall record latency here

		return Collections.emptyList();

	}

}