hll

Documentation

Index

• Variables
• func CountHLL(client Operator, namespace, set string, by []string, union bool) (int64, error)
• func CountHLLBin(client Operator, namespace, set, by string) (int64, error)
• func CountHLLByBinName(client Operator, namespace, set, by, hllBinName string) (int64, error)
• func CountIntersection(client Operator, namespace, set string, by []string) (int64, error)
• func CountUnion(client Operator, namespace, set string, by []string) (int64, error)
• type CountMode
• type CountOptions
• type CountResult
• type Counter
• type Operator
• type OperatorCounter
  • func NewCounter(operator Operator) *OperatorCounter
  • func (c *OperatorCounter) Count(ctx context.Context, options CountOptions) (CountResult, error)

Variables

var ErrCounterNotSet = errors.New("hll counter is not set")

ErrCounterNotSet reports a nil HLL counter dependency.

Functions

func CountHLL

func CountHLL(client Operator, namespace, set string, by []string, union bool) (int64, error)

CountHLL calculates amount of unique transactions by passed keys.

func CountHLLBin

func CountHLLBin(client Operator, namespace, set, by string) (int64, error)

func CountHLLByBinName

func CountHLLByBinName(client Operator, namespace, set, by, hllBinName string) (int64, error)

func CountIntersection

func CountIntersection(client Operator, namespace, set string, by []string) (int64, error)

func CountUnion

func CountUnion(client Operator, namespace, set string, by []string) (int64, error)

Types

type CountMode

type CountMode string

CountMode identifies an HLL count operation.

const (
	// CountModeIntersection counts values present in all HLL bins.
	CountModeIntersection CountMode = "intersection"
	// CountModeUnion counts values present in any HLL bin.
	CountModeUnion CountMode = "union"
)

type CountOptions

type CountOptions struct {
	Namespace string
	Set       string
	Keys      []string
	Bin       string
	Mode      CountMode
}

CountOptions is the core-owned input for HLL count helpers.

type CountResult

type CountResult struct {
	Count int64
}

CountResult is the core-owned result for HLL count helpers.

type Counter

type Counter interface {
	Count(ctx context.Context, options CountOptions) (CountResult, error)
}

Counter is the core-owned HLL counting contract for new consumers.

type Operator

type Operator interface {
	Operate(*aerospike.WritePolicy, *aerospike.Key, ...*aerospike.Operation) (*aerospike.Record, aerospike.Error)
}

type OperatorCounter

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

OperatorCounter adapts legacy Aerospike HLL operations to the Counter contract.

func NewCounter

func NewCounter(operator Operator) *OperatorCounter

NewCounter wraps an Aerospike HLL operator with the core-owned Counter contract.

func (*OperatorCounter) Count

func (c *OperatorCounter) Count(ctx context.Context, options CountOptions) (CountResult, error)

Count calculates HLL cardinality through core-owned options.