Java Code Examples for com.codahale.metrics.MetricRegistry#histogram()

/**
 * Instantiates {@link CryptoJobMetrics} for {@code requestType} and attaches all the metrics related to the
 * cryptoJob to the given {@code ownerClass}. The metrics are also registered in the provided {@code metricRegistry}.
 * @param ownerClass the {@link Class} that is supposed to own the metrics created by this tracker.
 * @param requestType the type of request for which a tracker is being created.
 * @param metricRegistry the {@link MetricRegistry} to use to register the created metrics.
 */
CryptoJobMetrics(Class ownerClass, String requestType, MetricRegistry metricRegistry) {
  jobQueuingTimeInMs =
      metricRegistry.histogram(MetricRegistry.name(ownerClass, requestType + JOB_QUEUING_TIME_SUFFIX));
  jobProcessingTimeInMs =
      metricRegistry.histogram(MetricRegistry.name(ownerClass, requestType + JOB_PROCESSING_TIME_SUFFIX));
  jobCallbackProcessingTimeMs =
      metricRegistry.histogram(MetricRegistry.name(ownerClass, requestType + JOB_CALLBACK_PROCESSING_TIME_SUFFIX));
  jobResultProcessingWaitTimeMs =
      metricRegistry.histogram(MetricRegistry.name(ownerClass, requestType + JOB_RESULT_PROCESSING_WAIT_TIME_SUFFIX));
  jobResultProcessingTimeMs =
      metricRegistry.histogram(MetricRegistry.name(ownerClass, requestType + JOB_RESULT_PROCESSING_TIME_SUFFIX));
  roundTripTimeInMs = metricRegistry.histogram(MetricRegistry.name(ownerClass, requestType + ROUND_TRIP_TIME_SUFFIX));

  operationRate = metricRegistry.meter(MetricRegistry.name(ownerClass, requestType + OPERATION_RATE_SUFFIX));
  operationErrorRate = metricRegistry.meter(
      MetricRegistry.name(ownerClass, requestType + OPERATION_ERROR_SUFFIX + OPERATION_RATE_SUFFIX));
}
 

@Inject
public DatabusResourcePoller(Optional<LongPollingExecutorServices> longPollingExecutorServices,
                             MetricRegistry metricRegistry) {
    checkNotNull(longPollingExecutorServices, "longPollingExecutorServices");
    if (longPollingExecutorServices.isPresent()) {
        _keepAliveExecutorService = longPollingExecutorServices.get().getKeepAlive();
        _pollingExecutorService = longPollingExecutorServices.get().getPoller();

        addThreadPoolMonitoring(_keepAliveExecutorService, "inactiveKeepAliveThreads", metricRegistry);
        addThreadPoolMonitoring(_pollingExecutorService, "inactivePollingThreads", metricRegistry);
    } else {
        _keepAliveExecutorService = null;
        _pollingExecutorService = null;
    }

    _keepAliveThreadDelayHistogram = metricRegistry.histogram(MetricRegistry.name("bv.emodb.databus", "DatabusResource1", "keepAliveThreadDelay"));
    _pollingThreadDelayHistogram = metricRegistry.histogram(MetricRegistry.name("bv.emodb.databus", "DatabusResource1", "pollingThreadDelay"));

    _pollTimer = buildPollTimer(metricRegistry);
}
 

@Inject
public MegabusRefResolver(DataProvider dataProvider, Topic megabusRefTopic,
                          Topic megabusResolvedTopic,
                          Topic retryRefTopic,
                          Topic missingRefTopic,
                          KafkaCluster kafkaCluster, Clock clock,
                          HostAndPort hostAndPort,
                          String refResolverConsumerGroup,
                          MetricRegistry metricRegistry) {
    super(SERVICE_NAME, kafkaCluster, hostAndPort.toString(),
            refResolverConsumerGroup, megabusRefTopic.getPartitions(), metricRegistry);

    _dataProvider = requireNonNull(dataProvider, "dataProvider");
    _megabusRefTopic = requireNonNull(megabusRefTopic, "megabusRefTopic");
    _megabusResolvedTopic = requireNonNull(megabusResolvedTopic, "megabusResolvedTopic");
    _retryRefTopic = requireNonNull(retryRefTopic, "retryRefTopic");
    _missingRefTopic = requireNonNull(missingRefTopic, "missingRefTopic");

    _clock = requireNonNull(clock, "clock");

    _redundantMeter = metricRegistry.meter(getMetricName("redundantUpdates"));
    _discardedMeter = metricRegistry.meter(getMetricName("discardedUpdates"));
    _pendingMeter = metricRegistry.meter(getMetricName("pendingUpdates"));
    _errorProcessingMeter = metricRegistry.meter(getMetricName("errors"));
    _processingLatencyHisto = metricRegistry.histogram(getMetricName("processing-latency-ms"));
}
 

StatsManagerMetrics(MetricRegistry registry) {
  statsAggregationFailureCount =
      registry.counter(MetricRegistry.name(StatsManager.class, "StatsAggregationFailureCount"));
  totalFetchAndAggregateTimeMs =
      registry.histogram(MetricRegistry.name(StatsManager.class, "TotalFetchAndAggregateTimeMs"));
  fetchAndAggregateTimePerStoreMs =
      registry.histogram(MetricRegistry.name(StatsManager.class, "FetchAndAggregateTimePerStoreMs"));
}
 

/**
 * Creates an instance of PerfNioServerMetrics.
 * @param metricRegistry the {@link MetricRegistry} instance to use.
 */
PerfNioServerMetrics(MetricRegistry metricRegistry) {
  requestRate = metricRegistry.meter(MetricRegistry.name(PerfNioServer.class, "RequestRate"));

  requestRoundTripTimeInMs =
      metricRegistry.histogram(MetricRegistry.name(PerfNioServer.class, "RequestRoundTripTimeInMs"));

  requestResponseError = metricRegistry.counter(MetricRegistry.name(PerfNioServer.class, "RequestResponseError"));
}
 

public RunnerStats(MetricRegistry registry) {
  this.normalRunners = registry.counter(
    name(MetricsConnection.class, "normalRunnersCount"));
  this.delayRunners = registry.counter(
    name(MetricsConnection.class, "delayRunnersCount"));
  this.delayIntevalHist = registry.histogram(
    name(MetricsConnection.class, "delayIntervalHist"));
}
 

public RegionStats(MetricRegistry registry, String name) {
  this.name = name;
  this.memstoreLoadHist = registry.histogram(name(MetricsConnection.class,
      MEMLOAD_BASE + this.name));
  this.heapOccupancyHist = registry.histogram(name(MetricsConnection.class,
      HEAP_BASE + this.name));
}
 

public MasterMetricsImpl(final String group,
                         final MetricRegistry registry) {
  this.group = group;
  this.registry = registry;

  eventsInJobHistoryHist = registry.histogram(name(group, TYPE + "_events_in_job_history"));
  jobsInJobListHist = registry.histogram(name(group, TYPE + "_jobs_in_job_list"));
}
 

public AccountServiceMetrics(MetricRegistry metricRegistry) {
  // Histogram
  startupTimeInMs = metricRegistry.histogram(MetricRegistry.name(HelixAccountService.class, "StartupTimeInMs"));
  updateAccountTimeInMs =
      metricRegistry.histogram(MetricRegistry.name(HelixAccountService.class, "UpdateAccountTimeInMs"));
  fetchRemoteAccountTimeInMs =
      metricRegistry.histogram(MetricRegistry.name(HelixAccountService.class, "FetchRemoteAccountTimeInMs"));
  accountUpdateConsumerTimeInMs =
      metricRegistry.histogram(MetricRegistry.name(HelixAccountService.class, "AccountUpdateConsumerTimeInMs"));
  accountUpdateToAmbryTimeInMs =
      metricRegistry.histogram(MetricRegistry.name(HelixAccountService.class, "AccountUpdateToAmbryTimeInMs"));
  accountFetchFromAmbryTimeInMs =
      metricRegistry.histogram(MetricRegistry.name(HelixAccountService.class, "AccountFetchFromAmbryTimeInMs"));
  backupWriteTimeInMs =
      metricRegistry.histogram(MetricRegistry.name(HelixAccountService.class, "BackupWriteTimeInMs"));
  backupReadTimeInMs = metricRegistry.histogram(MetricRegistry.name(HelixAccountService.class, "BackupReadTimeInMs"));

  // Counter
  unrecognizedMessageErrorCount =
      metricRegistry.counter(MetricRegistry.name(HelixAccountService.class, "UnrecognizedMessageErrorCount"));
  notifyAccountDataChangeErrorCount =
      metricRegistry.counter(MetricRegistry.name(HelixAccountService.class, "NotifyAccountDataChangeErrorCount"));
  updateAccountErrorCount =
      metricRegistry.counter(MetricRegistry.name(HelixAccountService.class, "UpdateAccountErrorCount"));
  fetchRemoteAccountErrorCount =
      metricRegistry.counter(MetricRegistry.name(HelixAccountService.class, "FetchRemoteAccountErrorCount"));
  remoteDataCorruptionErrorCount =
      metricRegistry.counter(MetricRegistry.name(HelixAccountService.class, "RemoteDataCorruptionErrorCount"));
  backupErrorCount = metricRegistry.counter(MetricRegistry.name(HelixAccountService.class, "BackupErrorCount"));
  nullNotifierCount = metricRegistry.counter(MetricRegistry.name(HelixAccountService.class, "NullNotifierCount"));
  accountUpdatesCapturedByScheduledUpdaterCount = metricRegistry.counter(
      MetricRegistry.name(HelixAccountService.class, "AccountUpdatesCapturedByScheduledUpdaterCount"));
  accountUpdatesToAmbryServerErrorCount =
      metricRegistry.counter(MetricRegistry.name(HelixAccountService.class, "AccountUpdatesToAmbryServerErrorCount"));
  accountDeletesToAmbryServerErrorCount =
      metricRegistry.counter(MetricRegistry.name(HelixAccountService.class, "AccountDeletesToAmbryServerErrorCount"));
  accountFetchFromAmbryServerErrorCount =
      metricRegistry.counter(MetricRegistry.name(HelixAccountService.class, "AccountFetchFromAmbryServerErrorCount"));
}
 

public EventTypeMetrics(final String eventTypeName, final MetricRegistry metricRegistry) {
    this.eventTypeName = eventTypeName;
    this.metricRegistry = metricRegistry;
    eventCountMeter = metricRegistry.meter(metricNameFor(eventTypeName, "publishing.events"));
    eventsPerBatchHistogram = metricRegistry.histogram(metricNameFor(eventTypeName, "publishing.eventsPerBatch"));
    averageEventSizeInBytesHistogram = metricRegistry.histogram(
            metricNameFor(eventTypeName, "publishing.averageEventSizeInBytes"));
    publishingTimer = metricRegistry.timer(metricNameFor(eventTypeName, "publishing"));
}
 

/**
 * Creates an instance of RestServerMetrics using the given {@code metricRegistry}.
 * @param metricRegistry the {@link MetricRegistry} to use for the metrics.
 * @param restServerState the {@link RestServerState} object used to track the state of the {@link RestServer}.
 */
public RestServerMetrics(MetricRegistry metricRegistry, final RestServerState restServerState) {
  // Errors
  restServerInstantiationError =
      metricRegistry.counter(MetricRegistry.name(RestServer.class, "InstantiationError"));

  // Others
  restRequestServiceShutdownTimeInMs =
      metricRegistry.histogram(MetricRegistry.name(RestServer.class, "RestRequestServiceShutdownTimeInMs"));
  restRequestServiceStartTimeInMs =
      metricRegistry.histogram(MetricRegistry.name(RestServer.class, "RestRequestServiceStartTimeInMs"));
  jmxReporterShutdownTimeInMs =
      metricRegistry.histogram(MetricRegistry.name(RestServer.class, "JmxShutdownTimeInMs"));
  jmxReporterStartTimeInMs = metricRegistry.histogram(MetricRegistry.name(RestServer.class, "JmxStartTimeInMs"));
  nioServerShutdownTimeInMs =
      metricRegistry.histogram(MetricRegistry.name(RestServer.class, "NioServerShutdownTimeInMs"));
  nioServerStartTimeInMs =
      metricRegistry.histogram(MetricRegistry.name(RestServer.class, "NioServerStartTimeInMs"));
  restRequestHandlerShutdownTimeInMs =
      metricRegistry.histogram(MetricRegistry.name(RestServer.class, "RestRequestHandlerShutdownTimeInMs"));
  restRequestHandlerStartTimeInMs =
      metricRegistry.histogram(MetricRegistry.name(RestServer.class, "RestRequestHandlerStartTimeInMs"));
  restResponseHandlerShutdownTimeInMs =
      metricRegistry.histogram(MetricRegistry.name(RestServer.class, "RestResponseHandlerShutdownTimeInMs"));
  restResponseHandlerStartTimeInMs =
      metricRegistry.histogram(MetricRegistry.name(RestServer.class, "RestResponseHandlerStartTimeInMs"));
  restServerShutdownTimeInMs =
      metricRegistry.histogram(MetricRegistry.name(RestServer.class, "RestServerShutdownTimeInMs"));
  restServerStartTimeInMs =
      metricRegistry.histogram(MetricRegistry.name(RestServer.class, "RestServerStartTimeInMs"));
  routerCloseTimeInMs = metricRegistry.histogram(MetricRegistry.name(RestServer.class, "RouterCloseTimeInMs"));
  accountServiceCloseTimeInMs =
      metricRegistry.histogram(MetricRegistry.name(RestServer.class, "AccountServiceCloseTimeInMs"));

  Gauge<Integer> restServerStatus = () -> restServerState.isServiceUp() ? 1 : 0;
  metricRegistry.register(MetricRegistry.name(RestServer.class, "RestServerState"), restServerStatus);
}
 

@Inject
public MultipartUploader(final MetricRegistry metricRegistry,
                         @Named("${"+CHUNK_SIZE_PROPERTY +":-0}") final int chunkSize) {
  checkArgument(chunkSize >= 0, CHUNK_SIZE_PROPERTY + " cannot be negative");
  this.chunkSize = chunkSize;
  this.executorService = MoreExecutors.listeningDecorator(
      new InstrumentedExecutorService(
        Executors.newCachedThreadPool(
          new NexusThreadFactory("multipart-upload", "nexus-blobstore-google-cloud")),
        metricRegistry, format("%s.%s", MultipartUploader.class.getName(), "executor-service")));
  this.numberOfChunks = metricRegistry.histogram(MetricRegistry.name(MultipartUploader.class, "chunks"));
  this.composeLimitHitCounter = metricRegistry.counter(MetricRegistry.name(MultipartUploader.class, "composeLimitHits"));
}
 

public Http2ServerMetrics(MetricRegistry registry) {
  requestEnqueueTime = registry.histogram(MetricRegistry.name(Http2ServerMetrics.class, "RequestEnqueueTime"));
  requestQueuingTime = registry.histogram(MetricRegistry.name(Http2ServerMetrics.class, "RequestQueuingTime"));
  requestTotalProcessingTime =
      registry.histogram(MetricRegistry.name(Http2ServerMetrics.class, "RequestTotalProcessingTime"));

  requestResponseChannelErrorCount =
      registry.counter(MetricRegistry.name(Http2ServerMetrics.class, "RequestResponseChannelErrorCount"));
  http2ParentExceptionCount =
      registry.counter(MetricRegistry.name(Http2ServerMetrics.class, "Http2ParentExceptionCount"));
  http2StreamExceptionCount =
      registry.counter(MetricRegistry.name(Http2ServerMetrics.class, "Http2StreamExceptionCount"));
}
 

/**
 * Add the async operation tracking metrics to a metric registry.
 * @param ownerClass the owning class for the metrics.
 * @param operationType the type of async operation.
 * @param metricRegistry the {@link MetricRegistry} to register the metrics in.
 */
public Metrics(Class ownerClass, String operationType, MetricRegistry metricRegistry) {
  this.operationType = operationType;
  this.operationTimeInMs = metricRegistry.histogram(MetricRegistry.name(ownerClass, operationType + "TimeInMs"));
  this.callbackProcessingTimeInMs =
      metricRegistry.histogram(MetricRegistry.name(ownerClass, operationType + "CallbackProcessingTimeInMs"));
  this.callbackProcessingError = metricRegistry.counter(MetricRegistry.name(ownerClass, "CallbackProcessingError"));
}
 

NodeLevelMetrics(MetricRegistry registry, String dataNodeName) {
  // Request rate.
  putRequestRate = registry.meter(MetricRegistry.name(PutOperation.class, dataNodeName, "PutRequestRate"));
  getBlobInfoRequestRate =
      registry.meter(MetricRegistry.name(GetBlobInfoOperation.class, dataNodeName, "GetBlobInfoRequestRate"));
  getRequestRate = registry.meter(MetricRegistry.name(GetBlobOperation.class, dataNodeName, "GetRequestRate"));
  deleteRequestRate = registry.meter(MetricRegistry.name(DeleteOperation.class, dataNodeName, "DeleteRequestRate"));
  undeleteRequestRate =
      registry.meter(MetricRegistry.name(UndeleteOperation.class, dataNodeName, "UndeleteRequestRate"));
  ttlUpdateRequestRate =
      registry.meter(MetricRegistry.name(TtlUpdateOperation.class, dataNodeName, "TtlUpdateRequestRate"));

  // Request latency.
  putRequestLatencyMs =
      registry.histogram(MetricRegistry.name(PutOperation.class, dataNodeName, "PutRequestLatencyMs"));
  getBlobInfoRequestLatencyMs = registry.histogram(
      MetricRegistry.name(GetBlobInfoOperation.class, dataNodeName, "GetBlobInfoRequestLatencyMs"));
  getRequestLatencyMs =
      registry.histogram(MetricRegistry.name(GetBlobOperation.class, dataNodeName, "GetRequestLatencyMs"));
  deleteRequestLatencyMs =
      registry.histogram(MetricRegistry.name(DeleteOperation.class, dataNodeName, "DeleteRequestLatencyMs"));
  undeleteRequestLatencyMs =
      registry.histogram(MetricRegistry.name(UndeleteOperation.class, dataNodeName, "UndeleteRequestLatencyMs"));
  ttlUpdateRequestLatencyMs =
      registry.histogram(MetricRegistry.name(TtlUpdateOperation.class, dataNodeName, "TtlUpdateRequestLatencyMs"));

  // Request error count.
  putRequestErrorCount =
      registry.counter(MetricRegistry.name(PutOperation.class, dataNodeName, "PutRequestErrorCount"));
  getBlobInfoRequestErrorCount = registry.counter(
      MetricRegistry.name(GetBlobInfoOperation.class, dataNodeName, "GetBlobInfoRequestErrorCount"));
  getRequestErrorCount =
      registry.counter(MetricRegistry.name(GetBlobOperation.class, dataNodeName, "GetRequestErrorCount"));
  deleteRequestErrorCount =
      registry.counter(MetricRegistry.name(DeleteOperation.class, dataNodeName, "DeleteRequestErrorCount"));
  undeleteRequestErrorCount =
      registry.counter(MetricRegistry.name(UndeleteOperation.class, dataNodeName, "UndeleteRequestErrorCount"));
  ttlUpdateRequestErrorCount =
      registry.counter(MetricRegistry.name(TtlUpdateOperation.class, dataNodeName, "TtlUpdateRequestErrorCount"));
}
 

@Setup(Level.Iteration)
public void setup() {
    registry = new MetricRegistry();
    histogram = registry.histogram("histogram");
    histogramSlidingTimeWindow =
            registry.register("slidingTimeWindowHistogram",
                    new Histogram(new SlidingTimeWindowReservoir(10, TimeUnit.SECONDS)));
    histogramUniform =
            registry.register("uniformHistogram",
                    new Histogram(new UniformReservoir()));
}
 

@Setup
public void setup() {
  prometheusSummary = io.prometheus.client.metrics.Summary.newBuilder()
    .name("name")
    .documentation("some description..")
    .build();
  prometheusSummaryChild = prometheusSummary.newPartial().apply();

  prometheusSimpleSummary = io.prometheus.client.Summary.build()
    .name("name")
    .help("some description..")
    .labelNames("some", "group").create();
  prometheusSimpleSummaryChild = prometheusSimpleSummary.labels("test", "group");

  prometheusSimpleSummaryNoLabels = io.prometheus.client.Summary.build()
    .name("name")
    .help("some description..")
    .create();

  prometheusSimpleHistogram = io.prometheus.client.Histogram.build()
    .name("name")
    .help("some description..")
    .labelNames("some", "group").create();
  prometheusSimpleHistogramChild = prometheusSimpleHistogram.labels("test", "group");

  prometheusSimpleHistogramNoLabels = io.prometheus.client.Histogram.build()
    .name("name")
    .help("some description..")
    .create();

  registry = new MetricRegistry();
  codahaleHistogram = registry.histogram("name");
}
 

@Provides
@Singleton
@Named(STATUS_UPDATE_DELTAS)
public Histogram provideUpdateDeltasMap(MetricRegistry registry) {
  return registry.histogram("status update delta");
}
 

/**
 * Creates an instance of RequestResponseHandlerMetrics using the given {@code metricRegistry}.
 * @param metricRegistry the {@link MetricRegistry} to use for the metrics.
 */
public RequestResponseHandlerMetrics(MetricRegistry metricRegistry) {
  this.metricRegistry = metricRegistry;

  // Rates
  // AsyncRequestWorker
  requestArrivalRate = metricRegistry.meter(MetricRegistry.name(AsyncRequestWorker.class, "RequestArrivalRate"));
  requestDequeuingRate = metricRegistry.meter(MetricRegistry.name(AsyncRequestWorker.class, "RequestDequeuingRate"));
  requestQueuingRate = metricRegistry.meter(MetricRegistry.name(AsyncRequestWorker.class, "RequestQueuingRate"));
  // AsyncResponseHandler
  responseArrivalRate = metricRegistry.meter(MetricRegistry.name(AsyncResponseHandler.class, "ResponseArrivalRate"));
  responseCompletionRate =
      metricRegistry.meter(MetricRegistry.name(AsyncResponseHandler.class, "ResponseCompletionRate"));

  // Latencies
  // AsyncRequestWorker
  requestPreProcessingTimeInMs =
      metricRegistry.histogram(MetricRegistry.name(AsyncRequestWorker.class, "RequestPreProcessingTimeInMs"));
  // AsyncResponseHandler
  responseCallbackProcessingTimeInMs =
      metricRegistry.histogram(MetricRegistry.name(AsyncResponseHandler.class, "ResponseCallbackProcessingTimeInMs"));
  responseCallbackWaitTimeInMs =
      metricRegistry.histogram(MetricRegistry.name(AsyncResponseHandler.class, "ResponseCallbackWaitTimeInMs"));
  responsePreProcessingTimeInMs =
      metricRegistry.histogram(MetricRegistry.name(AsyncResponseHandler.class, "ResponsePreProcessingTimeInMs"));
  // AsyncRequestResponseHandler
  requestWorkerSelectionTimeInMs = metricRegistry.histogram(
      MetricRegistry.name(AsyncRequestResponseHandler.class, "RequestWorkerSelectionTimeInMs"));

  // Errors
  // AsyncRequestWorker
  requestProcessingError =
      metricRegistry.counter(MetricRegistry.name(AsyncRequestWorker.class, "RequestProcessingError"));
  requestQueueAddError =
      metricRegistry.counter(MetricRegistry.name(AsyncRequestWorker.class, "RequestQueueAddError"));
  unknownRestMethodError =
      metricRegistry.counter(MetricRegistry.name(AsyncRequestWorker.class, "UnknownRestMethodError"));
  // AsyncResponseHandler
  resourceReleaseError =
      metricRegistry.counter(MetricRegistry.name(AsyncResponseHandler.class, "ResourceReleaseError"));
  responseAlreadyInFlightError =
      metricRegistry.counter(MetricRegistry.name(AsyncResponseHandler.class, "ResponseAlreadyInFlightError"));
  responseCompleteTasksError =
      metricRegistry.counter(MetricRegistry.name(AsyncResponseHandler.class, "ResponseCompleteTasksError"));
  // AsyncRequestResponseHandler
  requestResponseHandlerShutdownError =
      metricRegistry.counter(MetricRegistry.name(AsyncRequestResponseHandler.class, "ShutdownError"));
  requestResponseHandlerUnavailableError =
      metricRegistry.counter(MetricRegistry.name(AsyncRequestResponseHandler.class, "UnavailableError"));

  // Others
  // AsyncResponseHandler
  responseExceptionCount =
      metricRegistry.counter(MetricRegistry.name(AsyncResponseHandler.class, "ResponseExceptionCount"));
  responseHandlerCloseTimeInMs =
      metricRegistry.histogram(MetricRegistry.name(AsyncResponseHandler.class, "CloseTimeInMs"));
  // AsyncRequestResponseHandler
  requestWorkerShutdownTimeInMs = metricRegistry.histogram(
      MetricRegistry.name(AsyncRequestResponseHandler.class, "RequestWorkerShutdownTimeInMs"));
  requestWorkerStartTimeInMs =
      metricRegistry.histogram(MetricRegistry.name(AsyncRequestResponseHandler.class, "RequestWorkerStartTimeInMs"));
  requestResponseHandlerShutdownTimeInMs =
      metricRegistry.histogram(MetricRegistry.name(AsyncRequestResponseHandler.class, "ShutdownTimeInMs"));
  requestResponseHandlerStartTimeInMs =
      metricRegistry.histogram(MetricRegistry.name(AsyncRequestResponseHandler.class, "StartTimeInMs"));
  // AsyncRequestWorker
  residualRequestQueueSize =
      metricRegistry.counter(MetricRegistry.name(AsyncRequestWorker.class, "ResidualRequestQueueSize"));
  residualResponseSetSize =
      metricRegistry.counter(MetricRegistry.name(AsyncRequestWorker.class, "ResidualResponseSetSize"));
}
 

/**
 * Creates an instance of PerfRouterMetrics.
 * @param metricRegistry the {@link MetricRegistry} instance to use.
 */
PerfRouterMetrics(MetricRegistry metricRegistry) {
  putSizeInBytes = metricRegistry.histogram(MetricRegistry.name(PerfRouter.class, "PostSizeInBytes"));
  putContentConsumeTimeInMs =
      metricRegistry.histogram(MetricRegistry.name(PerfRouter.class, "PostContentConsumeTimeInMs"));
}