Struct Selection 

pub struct Selection { /* private fields */ }

A label-based filter for selecting which metrics a query operates on. Composes by AND — every constraint must match.

Implementations

impl Selection

pub fn all() -> Self

pub fn family(name: impl Into<String>) -> Self

Match any series in the named family.

pub fn with_family(self, name: impl Into<String>) -> Self

Builder form: constrain this selection to the named family.

pub fn with_label( self, key: impl Into<String>, value: impl Into<String>, ) -> Self

Restrict to series whose LabelSet contains key=value.

pub fn with_label_containing( self, key: impl Into<String>, substring: impl Into<String>, ) -> Self

Restrict to series whose label value at key contains substring (operator-friendly for path-style labels).

pub fn matches_family(&self, family_name: &str) -> bool

True when the selection’s family constraint matches the candidate, or there is no family constraint.

pub fn matches_labels(&self, labels: &Labels) -> bool

True when every label constraint is satisfied by labels.

Trait Implementations

impl Clone for Selection

fn clone(&self) -> Self

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for Selection

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl Default for Selection

fn default() -> Self

Returns the “default value” for a type.