Struct VectorSelector 

pub struct VectorSelector {
    pub name: Option<String>,
    pub matchers: Vec<LabelMatcher>,
    pub offset: Option<Duration>,
    pub at: Option<AtModifier>,
}

A vector selector expression (instant vector).

Selects a set of time series with a single sample value for each at the query evaluation time.

Example

use rusty_promql_parser::parser::selector::{VectorSelector, LabelMatcher, LabelMatchOp};

let mut sel = VectorSelector::new("http_requests_total");
sel.add_matcher(LabelMatcher::new("job", LabelMatchOp::Equal, "api"));
assert_eq!(sel.to_string(), r#"http_requests_total{job="api"}"#);

Fields

name: Option<String>

Metric name (optional if label matchers include __name__).

matchers: Vec<LabelMatcher>

Label matchers.

offset: Option<Duration>

Offset modifier (e.g., offset 5m, offset -1h).

at: Option<AtModifier>

@ modifier for timestamp pinning.

Implementations

impl VectorSelector

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

Create a new vector selector with just a metric name

pub fn with_matchers(matchers: Vec<LabelMatcher>) -> Self

Create a new vector selector with only label matchers

pub fn add_matcher(&mut self, matcher: LabelMatcher)

Add a label matcher

pub fn all_matchers(&self) -> Vec<LabelMatcher>

Get all matchers including the implicit name matcher

pub fn has_non_empty_matcher(&self) -> bool

Check if this selector has at least one non-empty matcher (Required for valid selectors to avoid selecting all series)

Trait Implementations

impl Clone for VectorSelector

fn clone(&self) -> VectorSelector

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for VectorSelector

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

Formats the value using the given formatter.

impl Display for VectorSelector

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

Formats the value using the given formatter.

impl PartialEq for VectorSelector

fn eq(&self, other: &VectorSelector) -> bool

Tests for self and other values to be equal, and is used by ==.

fn ne(&self, other: &Rhs) -> bool

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl StructuralPartialEq for VectorSelector