QueryBuilder

Struct QueryBuilder 

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pub struct QueryBuilder { /* private fields */ }
Expand description

A builder for Flux queries

let query = QueryBuilder::from("telegraf/autogen")
    .range_start(Duration::Minutes(-15))
    .filter(
        r#"r._measurement == "cpu" and
        r._field == "usage_system" and
        r.cpu == "cpu-total""#
    )
    .build();

assert_eq!(
    query.as_ref(),
    r#"from(bucket: "telegraf/autogen")
  |> range(start: -15m)
  |> filter(fn: (r) =>
    r._measurement == "cpu" and
    r._field == "usage_system" and
    r.cpu == "cpu-total"
  )
  |> yield()"#,
);

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impl QueryBuilder

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pub fn from<T>(bucket: T) -> Self
where T: Into<String>,

Create a query selecting from a bucket.

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pub fn range_start<T>(self, start: T) -> Self

Restrict query results to a start time

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pub fn range_stop<T>(self, stop: T) -> Self

Restrict query results to a stop time

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pub fn range<T, S>(self, start: T, stop: S) -> Self

Restrict query results to a between two instants

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pub fn filter<T>(self, filter: T) -> Self
where T: Into<String>,

Add a filter to the query

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pub fn window<T>(self, every: T) -> Self
where T: Into<Duration>,

Add a window to the query

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pub fn aggregate<T>(self, fn_: T) -> Self
where T: Into<String>,

Aggregate results

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pub fn mean(self) -> Self

Aggregate results using the mean function

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pub fn duplicate<T, S>(self, column: T, as_: S) -> Self
where T: Into<String>, S: Into<String>,

Duplicate fields

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pub fn aggregate_window<T, S>(self, fn_: S, every: Duration) -> Self
where T: Into<String>, S: Into<String>,

Aggregate results over a window

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pub fn build(self) -> Query

Create the Flux query

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