tsdb: github.com/prometheus/tsdb/labels Index | Files

package labels

import "github.com/prometheus/tsdb/labels"

Index

Package Files

labels.go selector.go

func Compare Uses

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func Compare(a, b Labels) int

Compare compares the two label sets. The result will be 0 if a==b, <0 if a < b, and >0 if a > b.

type EqualMatcher Uses

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

EqualMatcher matches on equality.

func (EqualMatcher) Matches Uses

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func (m EqualMatcher) Matches(v string) bool

Matches implements Matcher interface.

func (EqualMatcher) Name Uses

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func (m EqualMatcher) Name() string

Name implements Matcher interface.

func (EqualMatcher) String Uses

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func (m EqualMatcher) String() string

String implements Matcher interface.

func (EqualMatcher) Value Uses

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func (m EqualMatcher) Value() string

Value returns the matched value.

type Label Uses

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type Label struct {
    Name, Value string
}

Label is a key/value pair of strings.

type Labels Uses

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type Labels []Label

Labels is a sorted set of labels. Order has to be guaranteed upon instantiation.

func FromMap Uses

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func FromMap(m map[string]string) Labels

FromMap returns new sorted Labels from the given map.

func FromStrings Uses

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func FromStrings(ss ...string) Labels

FromStrings creates new labels from pairs of strings.

func New Uses

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func New(ls ...Label) Labels

New returns a sorted Labels from the given labels. The caller has to guarantee that all label names are unique.

func ReadLabels Uses

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func ReadLabels(fn string, n int) ([]Labels, error)

ReadLabels reads up to n label sets in a JSON formatted file fn. It is mostly useful to load testing data.

func (Labels) Equals Uses

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func (ls Labels) Equals(o Labels) bool

Equals returns whether the two label sets are equal.

func (Labels) Get Uses

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func (ls Labels) Get(name string) string

Get returns the value for the label with the given name. Returns an empty string if the label doesn't exist.

func (Labels) Hash Uses

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func (ls Labels) Hash() uint64

Hash returns a hash value for the label set.

func (Labels) Len Uses

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func (ls Labels) Len() int

func (Labels) Less Uses

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func (ls Labels) Less(i, j int) bool

func (Labels) Map Uses

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func (ls Labels) Map() map[string]string

Map returns a string map of the labels.

func (Labels) String Uses

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func (ls Labels) String() string

func (Labels) Swap Uses

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func (ls Labels) Swap(i, j int)

func (Labels) WithoutEmpty Uses

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func (ls Labels) WithoutEmpty() Labels

WithoutEmpty returns the labelset without empty labels. May return the same labelset.

type Matcher Uses

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type Matcher interface {
    // Name returns the label name the matcher should apply to.
    Name() string
    // Matches checks whether a value fulfills the constraints.
    Matches(v string) bool
    // String returns a human readable matcher.
    String() string
}

Matcher specifies a constraint for the value of a label.

func NewEqualMatcher Uses

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func NewEqualMatcher(name, value string) Matcher

NewEqualMatcher returns a new matcher matching an exact label value.

func NewMustRegexpMatcher Uses

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func NewMustRegexpMatcher(name, pattern string) Matcher

NewMustRegexpMatcher returns a new matcher verifying that a value matches the regular expression pattern. Will panic if the pattern is not a valid regular expression.

func NewRegexpMatcher Uses

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func NewRegexpMatcher(name, pattern string) (Matcher, error)

NewRegexpMatcher returns a new matcher verifying that a value matches the regular expression pattern.

func Not Uses

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func Not(m Matcher) Matcher

Not inverts the matcher's matching result.

type NotMatcher Uses

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type NotMatcher struct {
    Matcher
}

NotMatcher inverts the matching result for a matcher.

func (NotMatcher) Matches Uses

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func (m NotMatcher) Matches(v string) bool

func (NotMatcher) String Uses

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func (m NotMatcher) String() string

type RegexpMatcher Uses

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

func (RegexpMatcher) Matches Uses

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func (m RegexpMatcher) Matches(v string) bool

func (RegexpMatcher) Name Uses

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func (m RegexpMatcher) Name() string

func (RegexpMatcher) String Uses

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func (m RegexpMatcher) String() string

func (RegexpMatcher) Value Uses

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func (m RegexpMatcher) Value() string

type Selector Uses

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type Selector []Matcher

Selector holds constraints for matching against a label set.

func (Selector) Matches Uses

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func (s Selector) Matches(labels Labels) bool

Matches returns whether the labels satisfy all matchers.

type Slice Uses

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type Slice []Labels

Slice is a sortable slice of label sets.

func (Slice) Len Uses

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func (s Slice) Len() int

func (Slice) Less Uses

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func (s Slice) Less(i, j int) bool

func (Slice) Swap Uses

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func (s Slice) Swap(i, j int)

Package labels imports 10 packages (graph) and is imported by 53 packages. Updated 2019-06-01. Refresh now. Tools for package owners.