Class MeteredClient

micrometer/src/main/java/feign/micrometer/MeteredClient.java:28–71

Wrap feign Client with metrics.

/** Wrap feign {@link Client} with metrics. */
public class MeteredClient extends BaseMeteredClient implements Client {

  private final Client client;

  public MeteredClient(Client client, MeterRegistry meterRegistry) {
    this(client, meterRegistry, new FeignMetricName(Client.class), new FeignMetricTagResolver());
  }

  public MeteredClient(
      Client client,
      MeterRegistry meterRegistry,
      MetricName metricName,
      MetricTagResolver metricTagResolver) {
    super(meterRegistry, metricName, metricTagResolver);
    this.client = client;
  }

  @Override
  public Response execute(Request request, Options options) throws IOException {
    final Timer.Sample sample = Timer.start(meterRegistry);
    Timer timer = null;
    try {
      final Response response = client.execute(request, options);
      countResponseCode(request, response, options, response.status(), null);
      timer = createTimer(request, response, options, null);
      return response;
    } catch (FeignException e) {
      timer = createTimer(request, null, options, e);
      countResponseCode(request, null, options, e.status(), e);
      throw e;
    } catch (IOException | RuntimeException e) {
      timer = createTimer(request, null, options, e);
      throw e;
    } catch (Exception e) {
      timer = createTimer(request, null, options, e);
      throw new IOException(e);
    } finally {
      if (timer == null) {
        timer = createTimer(request, null, options, null);
      }
      sample.stop(timer);
    }
  }
}