utils

Documentation

Index

• func HasOuterAggregation(node *parser.PromQLNode) (aggs []*promParser.AggregateExpr)
• func HasOuterBinaryExpr(node *parser.PromQLNode) *promParser.BinaryExpr
• func HasOuterRate(node *parser.PromQLNode) (calls []*promParser.Call)
• func HasOuterSum(node *parser.PromQLNode) (calls []*promParser.AggregateExpr)
• func HasVectorSelector(node *parser.PromQLNode) (vs []promParser.VectorSelector)
• func RemoveConditions(source string) promParser.Node
• type ExcludedLabel
• type Source
  • func LabelsSource(expr string, node promParser.Node) (src []Source)
• type SourceType

Functions

func HasOuterAggregation

func HasOuterAggregation(node *parser.PromQLNode) (aggs []*promParser.AggregateExpr)

func HasOuterBinaryExpr

func HasOuterBinaryExpr(node *parser.PromQLNode) *promParser.BinaryExpr

func HasOuterRate

func HasOuterRate(node *parser.PromQLNode) (calls []*promParser.Call)

func HasOuterSum

func HasOuterSum(node *parser.PromQLNode) (calls []*promParser.AggregateExpr)

func HasVectorSelector

func HasVectorSelector(node *parser.PromQLNode) (vs []promParser.VectorSelector)

func RemoveConditions

func RemoveConditions(source string) promParser.Node

RemoveConditions takes a *valid* PromQL expression and removes any condition from it.

Types

type ExcludedLabel

type ExcludedLabel struct {
	Reason   string
	Fragment string
}

type Source

type Source struct {
	Selectors        []*promParser.VectorSelector
	Call             *promParser.Call
	ExcludeReason    map[string]ExcludedLabel // Reason why a label was excluded
	Operation        string
	Returns          promParser.ValueType
	ReturnedNumbers  []float64 // If AlwaysReturns=true this is the number that's returned
	IncludedLabels   []string  // Labels that are included by filters, they will be present if exist on source series (by).
	ExcludedLabels   []string  // Labels guaranteed to be excluded from the results (without).
	GuaranteedLabels []string  // Labels guaranteed to be present on the results (matchers).
	Type             SourceType
	FixedLabels      bool // Labels are fixed and only allowed labels can be present.
	IsDead           bool // True if this source cannot be reached and is dead code.
	AlwaysReturns    bool // True if this source always returns results.
}

func LabelsSource

func LabelsSource(expr string, node promParser.Node) (src []Source)

type SourceType

type SourceType int

const (
	UnknownSource SourceType = iota
	NumberSource
	StringSource
	SelectorSource
	FuncSource
	AggregateSource
)