[[java-rest-high-x-pack-rollup-get-job]]
=== Get Rollup Job API

The Get Rollup Job API can be used to get one or all rollup jobs from the
cluster. It accepts a `GetRollupJobRequest` object as a request and returns
a `GetRollupJobResponse`.

[[java-rest-high-x-pack-rollup-get-rollup-job-request]]
==== Get Rollup Job Request

A `GetRollupJobRequest` can be built without any parameters to get all of the
rollup jobs or with a job name to get a single job:

["source","java",subs="attributes,callouts,macros"]
--------------------------------------------------
include-tagged::{doc-tests}/RollupDocumentationIT.java[x-pack-rollup-get-rollup-job-request]
--------------------------------------------------
<1> Gets all jobs.
<2> Gets `job_1`.

[[java-rest-high-x-pack-rollup-get-rollup-job-execution]]
==== Execution

The Get Rollup Job API can be executed through a `RollupClient`
instance. Such instance can be retrieved from a `RestHighLevelClient`
using the `rollup()` method:

["source","java",subs="attributes,callouts,macros"]
--------------------------------------------------
include-tagged::{doc-tests}/RollupDocumentationIT.java[x-pack-rollup-get-rollup-job-execute]
--------------------------------------------------

[[java-rest-high-x-pack-rollup-get-rollup-job-response]]
==== Response

The returned `GetRollupJobResponse` includes a `JobWrapper` per returned job
which contains the configuration of the job, the job's current status, and
statistics about the job's past execution.

["source","java",subs="attributes,callouts,macros"]
--------------------------------------------------
include-tagged::{doc-tests}/RollupDocumentationIT.java[x-pack-rollup-get-rollup-job-response]
--------------------------------------------------
<1> We only asked for a single job

[[java-rest-high-x-pack-rollup-get-rollup-job-async]]
==== Asynchronous Execution

This request can be executed asynchronously:

["source","java",subs="attributes,callouts,macros"]
--------------------------------------------------
include-tagged::{doc-tests}/RollupDocumentationIT.java[x-pack-rollup-get-rollup-job-execute-async]
--------------------------------------------------
<1> The `GetRollupJobRequest` to execute and the `ActionListener` to use when
the execution completes

The asynchronous method does not block and returns immediately. Once it is
completed the `ActionListener` is called back using the `onResponse` method
if the execution successfully completed or using the `onFailure` method if
it failed.

A typical listener for `GetRollupJobResponse` looks like:

["source","java",subs="attributes,callouts,macros"]
--------------------------------------------------
include-tagged::{doc-tests}/RollupDocumentationIT.java[x-pack-rollup-get-rollup-job-execute-listener]
--------------------------------------------------
<1> Called when the execution is successfully completed. The response is
provided as an argument
<2> Called in case of failure. The raised exception is provided as an argument