logql

Documentation

Index

• Constants
• func ParseMatchers(input string) ([]*labels.Matcher, error)
• type Expr
  • func NewFilterExpr(left Expr, ty labels.MatchType, match string) Expr
  • func ParseExpr(input string) (Expr, error)
• type Filter
• type ParseError
  • func (p ParseError) Error() string
• type Querier
• type QuerierFunc
  • func (q QuerierFunc) Query(ms []*labels.Matcher, entryFilter Filter) (iter.EntryIterator, error)

Constants

const CLOSE_BRACE = 57355

const COMMA = 57356

const DOT = 57357

const EQ = 57350

const IDENTIFIER = 57346

const LABELS = 57349

const MATCHERS = 57348

const NEQ = 57351

const NRE = 57353

const OPEN_BRACE = 57354

const PIPE_EXACT = 57359

const PIPE_MATCH = 57358

const RE = 57352

const STRING = 57347

Functions

func ParseMatchers

func ParseMatchers(input string) ([]*labels.Matcher, error)

ParseMatchers parses a string and returns labels matchers, if the expression contains anything else it will return an error.

Types

type Expr

type Expr interface {
	Eval(Querier) (iter.EntryIterator, error)
	Matchers() []*labels.Matcher
}

Expr is a LogQL expression.

func NewFilterExpr

func NewFilterExpr(left Expr, ty labels.MatchType, match string) Expr

NewFilterExpr wraps an existing Expr with a next filter expression.

func ParseExpr

func ParseExpr(input string) (Expr, error)

ParseExpr parses a string and returns an Expr.

type Filter

type Filter func([]byte) bool

Filter is a line filter sent to a querier to filter out log line.

type ParseError

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

ParseError is what is returned when we failed to parse.

func (ParseError) Error

func (p ParseError) Error() string

type Querier

type Querier interface {
	Query([]*labels.Matcher, Filter) (iter.EntryIterator, error)
}

Querier allows a LogQL expression to fetch an EntryIterator for a set of matchers.

type QuerierFunc

type QuerierFunc func([]*labels.Matcher, Filter) (iter.EntryIterator, error)

QuerierFunc implements Querier.

func (QuerierFunc) Query

func (q QuerierFunc) Query(ms []*labels.Matcher, entryFilter Filter) (iter.EntryIterator, error)

Query implements Querier.