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ringbuffer

package

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Versions in this module

v0

v0.6.0-alpha.0

Mar 1, 2026

v0.5.0

Feb 19, 2026

Changes in this version

+ func UseStreamingRingBuffers(opts query.Options, selectRange int64) bool

type OverTimeBuffer

+ func NewAvgOverTimeBuffer(opts query.Options, selectRange, offset int64) *OverTimeBuffer

+ func NewLastOverTimeBuffer(opts query.Options, selectRange, offset int64) *OverTimeBuffer

+ func NewPresentOverTimeBuffer(opts query.Options, selectRange, offset int64) *OverTimeBuffer

+ func NewStdDevOverTimeBuffer(opts query.Options, selectRange, offset int64) *OverTimeBuffer

+ func NewStdVarOverTimeBuffer(opts query.Options, selectRange, offset int64) *OverTimeBuffer

v0.4.0

Dec 16, 2025

v0.3.0

Dec 16, 2025

v0.2.1

Dec 16, 2025

v0.2.0

Dec 16, 2025

v0.1.0

Nov 27, 2025

Changes in this version

+ func Empty(b Buffer) bool

+ type Buffer interface

+ Eval func(ctx context.Context, _, _ float64, _ int64) (float64, *histogram.FloatHistogram, bool, error)

+ MaxT func() int64

+ Push func(t int64, v Value)

+ ReadIntoLast func(f func(*Sample))

+ Reset func(mint int64, evalt int64)

+ SampleCount func() int

+ type FunctionArgs struct

+ MetricAppearedTs int64

+ Offset int64

+ Samples []Sample

+ ScalarPoint float64

+ ScalarPoint2 float64

+ SelectRange int64

+ StepTime int64

+ type FunctionCall func(f FunctionArgs) (float64, *histogram.FloatHistogram, bool, error)

+ func NewRangeVectorFunc(name string) (FunctionCall, error)

+ type GenericRingBuffer struct

+ func New(ctx context.Context, size int, selectRange, offset int64, call FunctionCall) *GenericRingBuffer

+ func NewWithExtLookback(ctx context.Context, size int, selectRange, offset, extLookback int64, ...) *GenericRingBuffer

+ func (r *GenericRingBuffer) Eval(ctx context.Context, scalarArg float64, scalarArg2 float64, ...) (float64, *histogram.FloatHistogram, bool, error)

+ func (r *GenericRingBuffer) MaxT() int64

+ func (r *GenericRingBuffer) Push(t int64, v Value)

+ func (r *GenericRingBuffer) ReadIntoLast(f func(*Sample))

+ func (r *GenericRingBuffer) Reset(mint int64, evalt int64)

+ func (r *GenericRingBuffer) SampleCount() int

+ type OverTimeBuffer struct

+ func NewCountOverTimeBuffer(opts query.Options, selectRange, offset int64) *OverTimeBuffer

+ func NewMaxOverTimeBuffer(opts query.Options, selectRange, offset int64) *OverTimeBuffer

+ func NewMinOverTimeBuffer(opts query.Options, selectRange, offset int64) *OverTimeBuffer

+ func NewSumOverTimeBuffer(opts query.Options, selectRange, offset int64) *OverTimeBuffer

+ func (r *OverTimeBuffer) Eval(ctx context.Context, _, _ float64, _ int64) (float64, *histogram.FloatHistogram, bool, error)

+ func (r *OverTimeBuffer) MaxT() int64

+ func (r *OverTimeBuffer) Push(t int64, v Value)

+ func (r *OverTimeBuffer) ReadIntoLast(func(*Sample))

+ func (r *OverTimeBuffer) Reset(mint int64, evalt int64)

+ func (r *OverTimeBuffer) SampleCount() int

+ type RateBuffer struct

+ func NewRateBuffer(ctx context.Context, opts query.Options, isCounter, isRate bool, ...) *RateBuffer

+ func (r *RateBuffer) Eval(ctx context.Context, _, _ float64, _ int64) (float64, *histogram.FloatHistogram, bool, error)

+ func (r *RateBuffer) MaxT() int64

+ func (r *RateBuffer) Push(t int64, v Value)

+ func (r *RateBuffer) ReadIntoLast(func(*Sample))

+ func (r *RateBuffer) Reset(mint int64, evalt int64)

+ func (r *RateBuffer) SampleCount() int

+ type Sample struct

+ T int64

+ V Value

+ type SamplesBuffer GenericRingBuffer

+ type Value struct

+ F float64

+ H *histogram.FloatHistogram