Function prometheus_http_query::functions::clamp

pub fn clamp(vector: InstantVector, min: f64, max: f64) -> InstantVector

Apply the PromQL clamp function.

use prometheus_http_query::{Selector, InstantVector};
use prometheus_http_query::functions::clamp;
use std::convert::TryInto;

fn main() -> Result<(), prometheus_http_query::Error> {
    let vector: InstantVector = Selector::new()
        .metric("some_metric")?
        .with("some_label", "some_value")
        .try_into()?;

    let result = clamp(vector, 0.5, 0.75);

    assert_eq!(&result.to_string(), "clamp(some_metric{some_label=\"some_value\"}, 0.5, 0.75)");

    Ok(())
}