Add create rollup job api to high level rest client (#33521)

This commit adds the Create Rollup Job API to the high level REST
client. It supersedes #32703 and adds dedicated request/response
objects so that it does not depend on server side components.

Related #29827
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Tanguy Leroux 2018-09-17 09:10:23 +02:00 committed by GitHub
parent 34379887b4
commit e77835c6f5
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26 changed files with 2738 additions and 11 deletions

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@ -0,0 +1,172 @@
[[java-rest-high-x-pack-rollup-put-job]]
=== Put Rollup Job API
The Put Rollup Job API can be used to create a new Rollup job
in the cluster. The API accepts a `PutRollupJobRequest` object
as a request and returns a `PutRollupJobResponse`.
[[java-rest-high-x-pack-rollup-put-rollup-job-request]]
==== Put Rollup Job Request
A `PutRollupJobRequest` requires the following argument:
["source","java",subs="attributes,callouts,macros"]
--------------------------------------------------
include-tagged::{doc-tests}/RollupDocumentationIT.java[x-pack-rollup-put-rollup-job-request]
--------------------------------------------------
<1> The configuration of the Rollup job to create as a `RollupJobConfig`
[[java-rest-high-x-pack-rollup-put-rollup-job-config]]
==== Rollup Job Configuration
The `RollupJobConfig` object contains all the details about the rollup job
configuration. See <<Rollup configuration, rollup-job-config>> to learn more
about the various configuration settings.
A `RollupJobConfig` requires the following arguments:
["source","java",subs="attributes,callouts,macros"]
--------------------------------------------------
include-tagged::{doc-tests}/RollupDocumentationIT.java[x-pack-rollup-put-rollup-job-config]
--------------------------------------------------
<1> The name of the Rollup job
<2> The index (or index pattern) to rollup
<3> The index to store rollup results into
<4> A cron expression which defines when the Rollup job should be executed
<5> The page size to use for the Rollup job
<6> The grouping configuration of the Rollup job as a `GroupConfig`
<7> The metrics configuration of the Rollup job as a list of `MetricConfig`
<8> The timeout value to use for the Rollup job as a `TimeValue`
[[java-rest-high-x-pack-rollup-put-rollup-job-group-config]]
==== Grouping Configuration
The grouping configuration of the Rollup job is defined in the `RollupJobConfig`
using a `GroupConfig` instance. `GroupConfig` reflects all the configuration
settings that can be defined using the REST API. See <<Grouping Config, rollup-groups-config>>
to learn more about these settings.
Using the REST API, we could define this grouping configuration:
[source,js]
--------------------------------------------------
"groups" : {
"date_histogram": {
"field": "timestamp",
"interval": "1h",
"delay": "7d",
"time_zone": "UTC"
},
"terms": {
"fields": ["hostname", "datacenter"]
},
"histogram": {
"fields": ["load", "net_in", "net_out"],
"interval": 5
}
}
--------------------------------------------------
// NOTCONSOLE
Using the `GroupConfig` object and the high level REST client, the same
configuration would be:
["source","java",subs="attributes,callouts,macros"]
--------------------------------------------------
include-tagged::{doc-tests}/RollupDocumentationIT.java[x-pack-rollup-put-rollup-job-group-config]
--------------------------------------------------
<1> The date histogram aggregation to use to rollup up documents, as a `DateHistogramGroupConfig`
<2> The terms aggregation to use to rollup up documents, as a `TermsGroupConfig`
<3> The histogram aggregation to use to rollup up documents, as a `HistogramGroupConfig`
<4> The grouping configuration as a `GroupConfig`
[[java-rest-high-x-pack-rollup-put-rollup-job-metrics-config]]
==== Metrics Configuration
After defining which groups should be generated for the data, you next configure
which metrics should be collected. The list of metrics is defined in the `RollupJobConfig`
using a `List<MetricConfig>` instance. `MetricConfig` reflects all the configuration
settings that can be defined using the REST API. See <<Metrics Config, rollup-metrics-config>>
to learn more about these settings.
Using the REST API, we could define this metrics configuration:
[source,js]
--------------------------------------------------
"metrics": [
{
"field": "temperature",
"metrics": ["min", "max", "sum"]
},
{
"field": "voltage",
"metrics": ["avg", "value_count"]
}
]
--------------------------------------------------
// NOTCONSOLE
Using the `MetricConfig` object and the high level REST client, the same
configuration would be:
["source","java",subs="attributes,callouts,macros"]
--------------------------------------------------
include-tagged::{doc-tests}/RollupDocumentationIT.java[x-pack-rollup-put-rollup-job-metrics-config]
--------------------------------------------------
<1> The list of `MetricConfig` to configure in the `RollupJobConfig`
<2> Adds the metrics to compute on the `temperature` field
<3> Adds the metrics to compute on the `voltage` field
[[java-rest-high-x-pack-rollup-put-rollup-job-execution]]
==== Execution
The Put 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-put-rollup-job-execute]
--------------------------------------------------
[[java-rest-high-x-pack-rollup-put-rollup-job-response]]
==== Response
The returned `PutRollupJobResponse` indicates if the new Rollup job
has been successfully created:
["source","java",subs="attributes,callouts,macros"]
--------------------------------------------------
include-tagged::{doc-tests}/RollupDocumentationIT.java[x-pack-rollup-put-rollup-job-response]
--------------------------------------------------
<1> `acknowledged` is a boolean indicating whether the job was successfully created
[[java-rest-high-x-pack-rollup-put-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-put-rollup-job-execute-async]
--------------------------------------------------
<1> The `PutRollupJobRequest` 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 `PutRollupJobResponse` looks like:
["source","java",subs="attributes,callouts,macros"]
--------------------------------------------------
include-tagged::{doc-tests}/RollupDocumentationIT.java[x-pack-rollup-put-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

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@ -262,6 +262,14 @@ The Java High Level REST Client supports the following Migration APIs:
include::migration/get-assistance.asciidoc[]
== Rollup APIs
The Java High Level REST Client supports the following Rollup APIs:
* <<java-rest-high-x-pack-rollup-put-job>>
include::rollup/put_job.asciidoc[]
== Security APIs
The Java High Level REST Client supports the following Security APIs: