elasticsearch/docs/reference/ml/anomaly-detection/apis/get-datafeed.asciidoc

[role="xpack"]
[testenv="platinum"]
[[ml-get-datafeed]]
=== Get {dfeeds} API

[subs="attributes"]
++++
<titleabbrev>Get {dfeeds}</titleabbrev>
++++

Retrieves configuration information for {dfeeds}.

[[ml-get-datafeed-request]]
==== {api-request-title}

`GET _ml/datafeeds/<feed_id>` +

`GET _ml/datafeeds/<feed_id>,<feed_id>` +

`GET _ml/datafeeds/` +

`GET _ml/datafeeds/_all` 

[[ml-get-datafeed-prereqs]]
==== {api-prereq-title}

* If the {es} {security-features} are enabled, you must have `monitor_ml`,
`monitor`, `manage_ml`, or `manage` cluster privileges to use this API. See
<<security-privileges>>.

[[ml-get-datafeed-desc]]
==== {api-description-title}

You can get information for multiple {dfeeds} in a single API request by using a
comma-separated list of {dfeeds} or a wildcard expression. You can get
information for all {dfeeds} by using `_all`, by specifying `*` as the
`<feed_id>`, or by omitting the `<feed_id>`.

IMPORTANT: This API returns a maximum of 10,000 {dfeeds}. 

[[ml-get-datafeed-path-parms]]
==== {api-path-parms-title}

`<feed_id>`::
  (Optional, string) Identifier for the {dfeed}. It can be a {dfeed} identifier
  or a wildcard expression. If you do not specify one of these options, the API
  returns information about all {dfeeds}.

[[ml-get-datafeed-query-parms]]
==== {api-query-parms-title}

`allow_no_datafeeds`::
  (Optional, boolean) Specifies what to do when the request:
+
--
* Contains wildcard expressions and there are no {datafeeds} that match.
* Contains the `_all` string or no identifiers and there are no matches.
* Contains wildcard expressions and there are only partial matches. 

The default value is `true`, which returns an empty `datafeeds` array when
there are no matches and the subset of results when there are partial matches.
If this parameter is `false`, the request returns a `404` status code when there
are no matches or only partial matches.
--

[[ml-get-datafeed-results]]
==== {api-response-body-title}

The API returns the following information:

`datafeeds`::
  (array) An array of {dfeed} objects.
  For more information, see <<ml-datafeed-resource>>.

[[ml-get-datafeed-response-codes]]
==== {api-response-codes-title}

`404` (Missing resources)::
  If `allow_no_datafeeds` is `false`, this code indicates that there are no
  resources that match the request or only partial matches for the request.

[[ml-get-datafeed-example]]
==== {api-examples-title}

The following example gets configuration information for the
`datafeed-total-requests` {dfeed}:

[source,console]
--------------------------------------------------
GET _ml/datafeeds/datafeed-total-requests
--------------------------------------------------
// TEST[skip:setup:server_metrics_datafeed]

The API returns the following results:

[source,console-result]
----
{
  "count": 1,
  "datafeeds": [
    {
      "datafeed_id": "datafeed-total-requests",
      "job_id": "total-requests",
      "query_delay": "83474ms",
      "indices": [
        "server-metrics"
      ],
      "query": {
        "match_all": {
          "boost": 1.0
        }
      },
      "scroll_size": 1000,
      "chunking_config": {
        "mode": "auto"
      }
    }
  ]
}
----
// TESTRESPONSE[s/"query.boost": "1.0"/"query.boost": $body.query.boost/]