metrics

type Float64Counter interface {
	Add(ctx context.Context, incr float64, options ...metric.AddOption)
}

type Float64CounterImpl struct {
	X metric.Float64Counter
}

type Float64Gauge interface {
	Record(ctx context.Context, value float64, options ...metric.RecordOption)
}

type Float64GaugeImpl struct {
	X metric.Float64Gauge
}

type Float64Histogram interface {
	Record(ctx context.Context, incr float64, options ...metric.RecordOption)
}

type Float64HistogramImpl struct {
	X metric.Float64Histogram
}

type Float64UpDownCounter interface {
	Add(ctx context.Context, incr float64, options ...metric.AddOption)
}

type Float64UpDownCounterImpl struct {
	X metric.Float64UpDownCounter
}

type Int64Counter interface {
	Add(ctx context.Context, incr int64, options ...metric.AddOption)
}

type Int64CounterImpl struct {
	X metric.Int64Counter
}

type Int64Gauge interface {
	Record(ctx context.Context, value int64, options ...metric.RecordOption)
}

type Int64GaugeImpl struct {
	X metric.Int64Gauge
}

type Int64Histogram interface {
	Record(ctx context.Context, incr int64, options ...metric.RecordOption)
}

type Int64HistogramImpl struct {
	X metric.Int64Histogram
}

type Int64UpDownCounter interface {
	Add(ctx context.Context, incr int64, options ...metric.AddOption)
}

type Int64UpDownCounterImpl struct {
	X metric.Int64UpDownCounter
}

type OperationSet struct {
	// Requests counts attempts — incremented before the work runs, not after.
	// Counting successes here and calling it "requests" is what makes
	// requests-minus-errors a number with no interpretation.
	Requests Int64Counter

	// Errors counts the attempts that failed.
	Errors Int64Counter

	// Latency records how long an attempt took, in milliseconds. Milliseconds
	// because that is what every other histogram in this module reports, and a
	// unit that varies per package is a unit nobody can chart together.
	Latency Float64Histogram
}

type Provider interface {
	NewFloat64Counter(name string, options ...metric.Float64CounterOption) (Float64Counter, error)
	NewFloat64Gauge(name string, options ...metric.Float64GaugeOption) (Float64Gauge, error)
	NewFloat64UpDownCounter(name string, options ...metric.Float64UpDownCounterOption) (Float64UpDownCounter, error)
	NewFloat64Histogram(name string, options ...metric.Float64HistogramOption) (Float64Histogram, error)
	NewInt64Counter(name string, options ...metric.Int64CounterOption) (Int64Counter, error)
	NewInt64Gauge(name string, options ...metric.Int64GaugeOption) (Int64Gauge, error)
	NewInt64UpDownCounter(name string, options ...metric.Int64UpDownCounterOption) (Int64UpDownCounter, error)
	NewInt64Histogram(name string, options ...metric.Int64HistogramOption) (Int64Histogram, error)
	Shutdown(ctx context.Context) error
	MeterProvider() metric.MeterProvider
}