interfaces

type Evaluator interface {
	EvalExpr(ctx context.Context, e parser.Expr, from, until int32, values map[parser.MetricRequest][]*types.MetricData, getTargetData GetTargetData) ([]*types.MetricData, error)
}

type Function interface {
	SetEvaluator(evaluator Evaluator)
	GetEvaluator() Evaluator
	Do(ctx context.Context, e parser.Expr, from, until int32, values map[parser.MetricRequest][]*types.MetricData, getTargetData GetTargetData) ([]*types.MetricData, error)
	Description() map[string]types.FunctionDescription
}

type FunctionBase struct {
	Evaluator Evaluator
}

type FunctionMetadata struct {
	Name  string
	Order Order
	F     Function
}

type GetTargetData func(ctx context.Context, exp parser.Expr, from, until int32, metricMap map[parser.MetricRequest][]*types.MetricData) (error, int)

type Order int