alerta.endpoint() function

alerta.endpoint() is a user-contributed function maintained by the package author.

alerta.endpoint() sends alerts to Alerta using data from input rows.


alerta.endpoint is a factory function that outputs another function. The output function requires a mapFn parameter.


A function that builds the object used to generate the POST request. Requires an r parameter.

mapFn accepts a table row (r) and returns an object that must include the following fields:

  • resource
  • event
  • severity
  • service
  • group
  • value
  • text
  • tags
  • attributes
  • type
  • timestamp

For more information, see alerta.alert() parameters.

Function type signature
    apiKey: string,
    url: string,
    ?environment: A,
    ?origin: B,
) => (
    mapFn: (
        r: C,
    ) => {
        D with
        value: O,
        type: N,
        timestamp: M,
        text: L,
        tags: K,
        severity: J,
        service: I,
        resource: H,
        group: G,
        event: F,
        attributes: E,
) => (<-tables: stream[C]) => stream[{C with _sent: string}]

For more information, see Function type signatures.



(Required) (Required) Alerta URL.


(Required) (Required) Alerta API key.


Alert environment. Default is "". Valid values: “Production”, “Development”, or empty string (default).


Alert origin. Default is "InfluxDB".


Send critical alerts to Alerta

import "contrib/bonitoo-io/alerta"
import "influxdata/influxdb/secrets"

apiKey = secrets.get(key: "ALERTA_API_KEY")
endpoint =
        url: "",
        apiKey: apiKey,
        environment: "Production",
        origin: "InfluxDB",

crit_events =
    from(bucket: "example-bucket")
        |> range(start: -1m)
        |> filter(fn: (r) => r._measurement == "statuses" and status == "crit")

    |> endpoint(
        mapFn: (r) => {
            return {r with
                resource: "example-resource",
                event: "example-event",
                severity: "critical",
                service: r.service,
                group: "example-group",
                value: r.status,
                text: "Status is critical.",
                tags: ["ex1", "ex2"],
                attributes: {},
                type: "exampleAlertType",
                timestamp: now(),

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The future of Flux

Flux is going into maintenance mode. You can continue using it as you currently are without any changes to your code.

Flux is going into maintenance mode and will not be supported in InfluxDB 3.0. This was a decision based on the broad demand for SQL and the continued growth and adoption of InfluxQL. We are continuing to support Flux for users in 1.x and 2.x so you can continue using it with no changes to your code. If you are interested in transitioning to InfluxDB 3.0 and want to future-proof your code, we suggest using InfluxQL.

For information about the future of Flux, see the following: