Java EndpointMetricsHandler类代码示例

import com.nike.riposte.metrics.codahale.EndpointMetricsHandler; //导入依赖的package包/类
@Test
public void constructor_calls_initEndpointAndServerConfigMetrics_on_metricsListener() {
    // given
    AppServerConfig asc = new AppServerConfig(configForTesting);

    // expect
    EndpointMetricsHandler emh = ((CodahaleMetricsListener) asc.metricsListener()).getEndpointMetricsHandler();
    assertThat(emh).isInstanceOf(EndpointMetricsHandlerDefaultImpl.class);
    assertThat(((EndpointMetricsHandlerDefaultImpl)emh).getEndpointRequestsTimers()).isNotEmpty();
}
 

import com.nike.riposte.metrics.codahale.EndpointMetricsHandler; //导入依赖的package包/类
public CodahaleMetricsListener generateCodahaleMetricsListenerWithSignalFxSupport(
        SignalFxReporterFactory signalFxReporterFactory,
        CodahaleMetricsCollector metricsCollector,
        MetricDimensionConfigurator<Timer> customRequestTimerDimensionConfigurator,
        ExtraRequestLogicHandler extraRequestLogicHandler
) {
    MetricRegistry metricRegistry = metricsCollector.getMetricRegistry();

    // Use the identity function if customRequestTimerDimensionConfigurator is null.
    if (customRequestTimerDimensionConfigurator == null)
        customRequestTimerDimensionConfigurator = METRIC_DIMENSION_CONFIGURATOR_IDENTITY;

    // Create the SignalFxEndpointMetricsHandler with the customRequestTimerDimensionConfigurator and
    //     extraRequestLogicHandler specifics.
    EndpointMetricsHandler endpointMetricsHandler = new SignalFxEndpointMetricsHandler(
            signalFxReporterFactory.getReporter(metricRegistry).getMetricMetadata(),
            metricRegistry,
            // Use a rolling window reservoir with the same window as the reporting frequency,
            //      to prevent the dashboards from producing false or misleading data.
            new SignalFxEndpointMetricsHandler.RollingWindowTimerBuilder(signalFxReporterFactory.getInterval(),
                    signalFxReporterFactory.getTimeUnit()),
            // Do the default request latency timer dimensions, chained with customRequestTimerDimensionConfigurator
            //      for any custom logic desired.
            DEFAULT_REQUEST_LATENCY_TIMER_DIMENSION_CONFIGURATOR
                    .chainedWith(customRequestTimerDimensionConfigurator)
    ) {
        @Override
        public void handleRequest(RequestInfo<?> requestInfo, ResponseInfo<?> responseInfo,
                                  HttpProcessingState httpState,
                                  int responseHttpStatusCode, int responseHttpStatusCodeXXValue,
                                  long requestElapsedTimeMillis) {

            // Do the normal endpoint stuff.
            super.handleRequest(requestInfo, responseInfo, httpState, responseHttpStatusCode,
                    responseHttpStatusCodeXXValue,
                    requestElapsedTimeMillis);

            // Do any extra logic (if desired).
            if (extraRequestLogicHandler != null) {
                extraRequestLogicHandler.handleExtraRequestLogic(
                        requestInfo, responseInfo, httpState, responseHttpStatusCode, responseHttpStatusCodeXXValue,
                        requestElapsedTimeMillis
                );
            }
        }
    };

    return CodahaleMetricsListener
            .newBuilder(metricsCollector)
            .withEndpointMetricsHandler(endpointMetricsHandler)
            // The metric names should be basic with no prefix - SignalFx dimensions do the job normally covered
            //      by metric name prefixes.
            .withServerStatsMetricNamingStrategy(CodahaleMetricsListener.MetricNamingStrategy.defaultNoPrefixImpl())
            .withServerConfigMetricNamingStrategy(CodahaleMetricsListener.MetricNamingStrategy.defaultNoPrefixImpl())
            // Histograms should use a rolling window reservoir with the same window as the reporting frequency,
            //      otherwise the dashboards will produce false or misleading data.
            .withRequestAndResponseSizeHistogramSupplier(
                    () -> new Histogram(
                            new SlidingTimeWindowReservoir(signalFxReporterFactory.getInterval(),
                                    signalFxReporterFactory.getTimeUnit())
                    )
            )
            .build();
}