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promql.labelReplace() function

content/flux/v0/stdlib/internal/promql/labelreplace.md

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<!------------------------------------------------------------------------------ IMPORTANT: This page was generated from comments in the Flux source code. Any edits made directly to this page will be overwritten the next time the documentation is generated. To make updates to this documentation, update the function comments above the function definition in the Flux source code: https://github.com/influxdata/flux/blob/master/stdlib/internal/promql/promql.flux#L138-L144 Contributing to Flux: https://github.com/influxdata/flux#contributing Fluxdoc syntax: https://github.com/influxdata/flux/blob/master/docs/fluxdoc.md ------------------------------------------------------------------------------->

promql.labelReplace() implements functionality equivalent to PromQL's label_replace() function.

Important: The internal/promql package is not meant for external use.

Function type signature
js
(
    <-tables: stream[{A with _value: float}],
    destination: string,
    regex: string,
    replacement: string,
    source: string,
) => stream[{B with _value: float}]

{{% caption %}} For more information, see Function type signatures. {{% /caption %}}

Parameters

tables

Input data. Default is piped-forward data (<-).

source

({{< req >}}) Input label.

destination

({{< req >}}) Output label.

regex

({{< req >}}) Pattern as a regex string.

replacement

({{< req >}}) Replacement value.