package gauge

import "go.opentelemetry.io/otel/sdk/metric/aggregator/gauge"

Index ¶

• type Aggregator
• func New() *Aggregator
• func (g *Aggregator) Checkpoint(ctx context.Context, _ *export.Descriptor)
• func (g *Aggregator) LastValue() (core.Number, time.Time, error)
• func (g *Aggregator) Merge(oa export.Aggregator, desc *export.Descriptor) error
• func (g *Aggregator) Update(_ context.Context, number core.Number, desc *export.Descriptor) error

Types ¶

type Aggregator ¶

type Aggregator struct {
	// contains filtered or unexported fields
}

Aggregator aggregates gauge events.

func New ¶

func New() *Aggregator

New returns a new gauge aggregator. This aggregator retains the last value and timestamp that were recorded.

func (*Aggregator) Checkpoint ¶

func (g *Aggregator) Checkpoint(ctx context.Context, _ *export.Descriptor)

Checkpoint atomically saves the current value.

func (*Aggregator) LastValue ¶

func (g *Aggregator) LastValue() (core.Number, time.Time, error)

LastValue returns the last-recorded gauge value and the corresponding timestamp. The error value aggregator.ErrNoLastValue will be returned if (due to a race condition) the checkpoint was computed before the first value was set.

func (*Aggregator) Merge ¶

func (g *Aggregator) Merge(oa export.Aggregator, desc *export.Descriptor) error

Merge combines state from two aggregators. If the gauge is declared as monotonic, the greater value is chosen. If the gauge is declared as non-monotonic, the most-recently set value is chosen.

func (*Aggregator) Update ¶

func (g *Aggregator) Update(_ context.Context, number core.Number, desc *export.Descriptor) error

Update atomically sets the current "last" value.

Source Files ¶

gauge.go