--
:api: get-datafeed-stats
:request: GetDatafeedStatsRequest
:response: GetDatafeedStatsResponse
--
[id="{upid}-{api}"]
=== Get Datafeed Stats API

The Get Datafeed Stats API provides the ability to get any number of
 {ml} datafeed's statistics in the cluster.
It accepts a +{request}+ object and responds
with a +{response}+ object.

[id="{upid}-{api}-request"]
==== Get Datafeed Stats Request

A +{request}+ object can have any number of `datafeedId`
entries. However, they all must be non-null. An empty list is the same as
requesting statistics for all datafeeds.

["source","java",subs="attributes,callouts,macros"]
--------------------------------------------------
include-tagged::{doc-tests-file}[{api}-request]
--------------------------------------------------
<1> Constructing a new request referencing existing `datafeedIds`, can contain wildcards
<2> Whether to ignore if a wildcard expression matches no datafeeds.
 (This includes `_all` string or when no datafeeds have been specified)

include::../execution.asciidoc[]

[id="{upid}-{api}-response"]
==== Get Datafeed Stats Response
The returned +{response}+ contains the requested datafeed statistics:

["source","java",subs="attributes,callouts,macros"]
--------------------------------------------------
include-tagged::{doc-tests-file}[{api}-response]
--------------------------------------------------
<1> `count()` indicates the number of datafeeds statistics found
<2> `datafeedStats()` is the collection of {ml} `DatafeedStats` objects found