private void createMetrics()

in grpc-gcp/src/main/java/com/google/cloud/grpc/GcpMultiEndpointChannel.java [520:563]
38 lines of code
4 McCabe index (conditional complexity)

  private void createMetrics() {
    if (gcpMetricsOptions == null) {
      return;
    }

    MetricRegistry metricRegistry = gcpMetricsOptions.getMetricRegistry();
    if (metricRegistry == null) {
      return;
    }

    if (endpointStateMetric != null) {
      return;
    }

    String prefix = gcpMetricsOptions.getNamePrefix();

    endpointStateMetric =
        metricRegistry.addDerivedLongGauge(
            prefix + METRIC_ENDPOINT_STATE,
            createMetricOptions(
                "Reports 1 when endpoint is in the status.",
                COUNT,
                LabelKey.create(ENDPOINT_LABEL, ENDPOINT_LABEL_DESC),
                LabelKey.create(STATUS_LABEL, STATUS_LABEL_DESC)));

    endpointSwitchMetric =
        metricRegistry.addDerivedLongCumulative(
            prefix + METRIC_ENDPOINT_SWITCH,
            createMetricOptions(
                "Reports occurrences of changes of current endpoint for a multi-endpoint with "
                    + "the name, specifying change type.",
                COUNT,
                LabelKey.create(ME_NAME_LABEL, ME_NAME_LABEL_DESC),
                LabelKey.create(SWITCH_TYPE_LABEL, SWITCH_TYPE_LABEL_DESC)));

    currentEndpointMetric =
        metricRegistry.addDerivedLongGauge(
            prefix + METRIC_CURRENT_ENDPOINT,
            createMetricOptions(
                "Reports 1 when an endpoint is current for multi-endpoint with the name.",
                COUNT,
                LabelKey.create(ME_NAME_LABEL, ME_NAME_LABEL_DESC),
                LabelKey.create(ENDPOINT_LABEL, ENDPOINT_LABEL_DESC)));
  }