package sum

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

Index ¶

• type Aggregator
• func New(cnt int) []Aggregator
• func (c *Aggregator) Aggregation() aggregation.Aggregation
• func (c *Aggregator) Kind() aggregation.Kind
• func (c *Aggregator) Merge(oa export.Aggregator, desc *metric.Descriptor) error
• func (c *Aggregator) Subtract(opAgg, resAgg export.Aggregator, descriptor *metric.Descriptor) error
• func (c *Aggregator) Sum() (metric.Number, error)
• func (c *Aggregator) SynchronizedMove(oa export.Aggregator, _ *metric.Descriptor) error
• func (c *Aggregator) Update(_ context.Context, number metric.Number, desc *metric.Descriptor) error

Types ¶

type Aggregator ¶

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

Aggregator aggregates counter events.

func New ¶

func New(cnt int) []Aggregator

New returns a new counter aggregator implemented by atomic operations. This aggregator implements the aggregation.Sum export interface.

func (*Aggregator) Aggregation ¶

func (c *Aggregator) Aggregation() aggregation.Aggregation

Aggregation returns an interface for reading the state of this aggregator.

func (*Aggregator) Kind ¶

func (c *Aggregator) Kind() aggregation.Kind

Kind returns aggregation.SumKind.

func (*Aggregator) Merge ¶

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

Merge combines two counters by adding their sums.

func (*Aggregator) Subtract ¶

func (c *Aggregator) Subtract(opAgg, resAgg export.Aggregator, descriptor *metric.Descriptor) error

func (*Aggregator) Sum ¶

func (c *Aggregator) Sum() (metric.Number, error)

Sum returns the last-checkpointed sum. This will never return an error.

func (*Aggregator) SynchronizedMove ¶

func (c *Aggregator) SynchronizedMove(oa export.Aggregator, _ *metric.Descriptor) error

SynchronizedMove atomically saves the current value into oa and resets the current sum to zero.

func (*Aggregator) Update ¶

func (c *Aggregator) Update(_ context.Context, number metric.Number, desc *metric.Descriptor) error

Update atomically adds to the current value.

Source Files ¶

sum.go