labeler

package

v0.1.2 Latest Latest Go to latest Published: Jul 30, 2020 License: Apache-2.0 Imports: 12 Imported by: 0

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Repository

github.com/bitsbeats/prometheus-acls

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Documentation ¶

Index ¶

Variables
func MustParseLabels(query string) (labelMatchers []*labels.Matcher)
func ParseLabels(query string) (labelMatchers []*labels.Matcher, err error)
type Labeler
- func NewLabeler() (l *Labeler)

Constants ¶

This section is empty.

Variables ¶

View Source

var NoneLabelMatcher = []*labels.Matcher{{
	Name:  "__",
	Value: "none",
	Type:  labels.MatchEqual,
}}

NoneLabelMatcher is a prometheus label matcher that fails for all metrics

Functions ¶

func MustParseLabels ¶

func MustParseLabels(query string) (labelMatchers []*labels.Matcher)

MustParseLabels is a ParseLabels version that panics on error

func ParseLabels ¶

func ParseLabels(query string) (labelMatchers []*labels.Matcher, err error)

ParseLabels uses Prometheus promql library to parse a string of Prometheus labels into LaberMatchers

Types ¶

type Labeler ¶

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

Labeler provides the relabeling functions and thracks the metrics

func NewLabeler ¶

func NewLabeler() (l *Labeler)

NewLabeler creates a new instance of *Labeler

func (*Labeler) AddLabels ¶

func (l *Labeler) AddLabels(expr promql.Expr, acl core.ACL) (labeled promql.Expr)

AddLabels reversively walks through a promql.Expr and adds the LabelMatches provided by core.ACL to every metric

This function tries to follow the same flow as Promtheus eval https://github.com/prometheus/prometheus/blob/master/promql/engine.go#L923

func (*Labeler) DedupeMatchers ¶

func (l *Labeler) DedupeMatchers(matchers []*labels.Matcher) []*labels.Matcher

DedupeMatchers tries to find Matchers that do the same stuff and remove the more cpu intersive version.

func (*Labeler) PromACLMiddlewareFor ¶

func (l *Labeler) PromACLMiddlewareFor(u *url.URL) func(http.Handler) http.Handler

PromACLMiddlewareFor generates a Middleware for a URL that modifies Prometheus Queries by injecting additional Labels. These labels are provided by a core.ACL interface via the requests Context

Source Files ¶

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