Function prometheus_http_query::aggregations::quantile

pub fn quantile(
    vector: InstantVector, 
    labels: Option<Aggregate<'_>>, 
    parameter: f64
) -> InstantVector

Use the quantile aggregation operator on an instant vector.

use prometheus_http_query::{Client, Selector, InstantVector, Aggregate};
use prometheus_http_query::aggregations::quantile;
use std::convert::TryInto;

#[tokio::main(flavor = "current_thread")]
async fn main() -> Result<(), prometheus_http_query::Error> {
    let client = Client::default();
    let vector: InstantVector = Selector::new()
        .metric("prometheus_target_interval_length_seconds")
        .try_into()?;

    let q = quantile(vector, Some(Aggregate::By(&["prepare_time"])), 0.9);

    let response = client.query(q, None, None).await?;
    let value = response.as_instant()
        .unwrap()
        .get(0)
        .unwrap()
        .sample()
        .value();

    assert!(value.is_normal());
    Ok(())
}