metrics

type Metrics interface {
	IsMetricsEnabled() bool

	// HTTPHandler returns the HTTP handler of this metrics registry
	HTTPHandler() http.Handler

	GetAPIServerRESTHTTPMiddleware() func(next http.Handler) http.Handler

	// functions for transaction handler to define and emit metrics
	TransactionHandlerMetrics
}

type TransactionHandlerMetrics interface {
	// functions for declaring new metrics
	InitTxHandlerCounterMetric(ctx context.Context, metricName string, helpText string, withDefaultLabels bool)
	InitTxHandlerCounterMetricWithLabels(ctx context.Context, metricName string, helpText string, labelNames []string, withDefaultLabels bool)
	InitTxHandlerGaugeMetric(ctx context.Context, metricName string, helpText string, withDefaultLabels bool)
	InitTxHandlerGaugeMetricWithLabels(ctx context.Context, metricName string, helpText string, labelNames []string, withDefaultLabels bool)
	InitTxHandlerHistogramMetric(ctx context.Context, metricName string, helpText string, buckets []float64, withDefaultLabels bool)
	InitTxHandlerHistogramMetricWithLabels(ctx context.Context, metricName string, helpText string, buckets []float64, labelNames []string, withDefaultLabels bool)
	InitTxHandlerSummaryMetric(ctx context.Context, metricName string, helpText string, withDefaultLabels bool)
	InitTxHandlerSummaryMetricWithLabels(ctx context.Context, metricName string, helpText string, labelNames []string, withDefaultLabels bool)

	// functions for use existing metrics
	SetTxHandlerGaugeMetric(ctx context.Context, metricName string, number float64, defaultLabels *metric.FireflyDefaultLabels)
	SetTxHandlerGaugeMetricWithLabels(ctx context.Context, metricName string, number float64, labels map[string]string, defaultLabels *metric.FireflyDefaultLabels)
	IncTxHandlerCounterMetric(ctx context.Context, metricName string, defaultLabels *metric.FireflyDefaultLabels)
	IncTxHandlerCounterMetricWithLabels(ctx context.Context, metricName string, labels map[string]string, defaultLabels *metric.FireflyDefaultLabels)
	ObserveTxHandlerHistogramMetric(ctx context.Context, metricName string, number float64, defaultLabels *metric.FireflyDefaultLabels)
	ObserveTxHandlerHistogramMetricWithLabels(ctx context.Context, metricName string, number float64, labels map[string]string, defaultLabels *metric.FireflyDefaultLabels)
	ObserveTxHandlerSummaryMetric(ctx context.Context, metricName string, number float64, defaultLabels *metric.FireflyDefaultLabels)
	ObserveTxHandlerSummaryMetricWithLabels(ctx context.Context, metricName string, number float64, labels map[string]string, defaultLabels *metric.FireflyDefaultLabels)
}