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365 lines
8.2 KiB
Text
365 lines
8.2 KiB
Text
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[[simulate-ingest-api]]
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=== Simulate ingest API
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++++
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<titleabbrev>Simulate ingest</titleabbrev>
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++++
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Executes ingest pipelines against a set of provided documents, optionally
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with substitute pipeline definitions. This API is meant to be used for
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troubleshooting or pipeline development, as it does not actually index any
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data into {es}.
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////
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[source,console]
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----
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PUT /_ingest/pipeline/my-pipeline
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{
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"description" : "example pipeline to simulate",
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"processors": [
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{
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"set" : {
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"field" : "field1",
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"value" : "value1"
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}
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}
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]
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}
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PUT /_ingest/pipeline/my-final-pipeline
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{
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"description" : "example final pipeline to simulate",
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"processors": [
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{
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"set" : {
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"field" : "field2",
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"value" : "value2"
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}
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}
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]
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}
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PUT /my-index
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{
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"settings": {
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"index": {
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"default_pipeline": "my-pipeline",
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"final_pipeline": "my-final-pipeline"
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}
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}
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}
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----
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// TESTSETUP
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////
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[source,console]
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----
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POST /_ingest/_simulate
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{
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"docs": [
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{
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"_index": "my-index",
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"_id": "id",
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"_source": {
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"foo": "bar"
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}
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},
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{
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"_index": "my-index",
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"_id": "id",
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"_source": {
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"foo": "rab"
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}
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}
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],
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"pipeline_substitutions": { <1>
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"my-pipeline": {
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"processors": [
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{
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"set": {
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"field": "field3",
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"value": "value3"
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}
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}
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]
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}
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}
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}
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----
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<1> This replaces the existing `my-pipeline` pipeline with the contents given here for the duration of this request.
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[[simulate-ingest-api-request]]
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==== {api-request-title}
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`POST /_ingest/_simulate`
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`GET /_ingest/_simulate`
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`POST /_ingest/<target>/_simulate`
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`GET /_ingest/<target>/_simulate`
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[[simulate-ingest-api-prereqs]]
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==== {api-prereq-title}
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* If the {es} {security-features} are enabled, you must have the
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`index` or `create` <<privileges-list-indices,index privileges>>
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to use this API.
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[[simulate-ingest-api-desc]]
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==== {api-description-title}
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The simulate ingest API simulates ingesting data into an index. It
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executes the default and final pipeline for that index against a set
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of documents provided in the body of the request. If a pipeline
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contains a <<reroute-processor,reroute processor>>, it follows that
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reroute processor to the new index, executing that index's pipelines
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as well the same way that a non-simulated ingest would. No data is
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indexed into {es}. Instead, the transformed document is returned,
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along with the list of pipelines that have been executed and the name
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of the index where the document would have been indexed if this were
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not a simulation. The transformed document is validated against the
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mappings that would apply to this index, and any validation error is
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reported in the result.
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This API differs from the
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<<simulate-pipeline-api,simulate pipeline API>> in that you specify a
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single pipeline for that API, and it only runs that one pipeline. The
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simulate pipeline API is more useful for developing a single pipeline,
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while the simulate ingest API is more useful for troubleshooting the
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interaction of the various pipelines that get applied when ingesting
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into an index.
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By default, the pipeline definitions that are currently in the system
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are used. However, you can supply substitute pipeline definitions in the
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body of the request. These will be used in place of the pipeline
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definitions that are already in the system. This can be used to replace
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existing pipeline definitions or to create new ones. The pipeline
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substitutions are only used within this request.
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[[simulate-ingest-api-path-params]]
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==== {api-path-parms-title}
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`<target>`::
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(Optional, string)
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The index to simulate ingesting into. This can be overridden by specifying an index
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on each document. If you provide a <target> in the request path, it is used for any
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documents that don’t explicitly specify an index argument.
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[[simulate-ingest-api-query-params]]
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==== {api-query-parms-title}
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`pipeline`::
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(Optional, string)
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Pipeline to use as the default pipeline. This can be used to override the default pipeline
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of the index being ingested into.
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[role="child_attributes"]
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[[simulate-ingest-api-request-body]]
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==== {api-request-body-title}
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`docs`::
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(Required, array of objects)
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Sample documents to test in the pipeline.
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+
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.Properties of `docs` objects
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[%collapsible%open]
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====
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`_id`::
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(Optional, string)
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Unique identifier for the document.
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`_index`::
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(Optional, string)
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Name of the index that the document will be ingested into.
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`_source`::
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(Required, object)
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JSON body for the document.
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====
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`pipeline_substitutions`::
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(Optional, map of strings to objects)
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Map of pipeline IDs to substitute pipeline definition objects.
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+
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.Properties of pipeline definition objects
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[%collapsible%open]
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====
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include::put-pipeline.asciidoc[tag=pipeline-object]
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====
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[[simulate-ingest-api-example]]
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==== {api-examples-title}
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[[simulate-ingest-api-pre-existing-pipelines-ex]]
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===== Use pre-existing pipeline definitions
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In this example the index `index` has a default pipeline called `my-pipeline` and a final
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pipeline called `my-final-pipeline`. Since both documents are being ingested into `index`,
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both pipelines are executed using the pipeline definitions that are already in the system.
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[source,console]
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----
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POST /_ingest/_simulate
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{
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"docs": [
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{
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"_index": "my-index",
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"_id": "123",
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"_source": {
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"foo": "bar"
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}
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},
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{
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"_index": "my-index",
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"_id": "456",
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"_source": {
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"foo": "rab"
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}
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}
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]
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}
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----
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The API returns the following response:
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[source,console-result]
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----
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{
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"docs": [
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{
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"doc": {
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"_id": "123",
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"_index": "my-index",
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"_version": -3,
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"_source": {
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"field1": "value1",
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"field2": "value2",
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"foo": "bar"
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},
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"executed_pipelines": [
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"my-pipeline",
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"my-final-pipeline"
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]
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}
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},
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{
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"doc": {
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"_id": "456",
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"_index": "my-index",
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"_version": -3,
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"_source": {
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"field1": "value1",
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"field2": "value2",
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"foo": "rab"
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},
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"executed_pipelines": [
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"my-pipeline",
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"my-final-pipeline"
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]
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}
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}
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]
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}
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----
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[[simulate-ingest-api-request-body-ex]]
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===== Specify a pipeline substitution in the request body
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In this example the index `index` has a default pipeline called `my-pipeline` and a final
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pipeline called `my-final-pipeline`. But a substitute definition of `my-pipeline` is
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provided in `pipeline_substitutions`. The substitute `my-pipeline` will be used in place of
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the `my-pipeline` that is in the system, and then the `my-final-pipeline` that is already
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defined in the system will be executed.
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[source,console]
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----
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POST /_ingest/_simulate
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{
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"docs": [
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{
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"_index": "my-index",
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"_id": "123",
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"_source": {
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"foo": "bar"
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}
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},
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{
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"_index": "my-index",
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"_id": "456",
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"_source": {
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"foo": "rab"
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}
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}
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],
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"pipeline_substitutions": {
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"my-pipeline": {
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"processors": [
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{
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"uppercase": {
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"field": "foo"
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}
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}
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]
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}
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}
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}
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----
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The API returns the following response:
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[source,console-result]
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----
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{
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"docs": [
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{
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"doc": {
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"_id": "123",
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"_index": "my-index",
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"_version": -3,
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"_source": {
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"field2": "value2",
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"foo": "BAR"
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},
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"executed_pipelines": [
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"my-pipeline",
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"my-final-pipeline"
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]
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}
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},
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{
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"doc": {
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"_id": "456",
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"_index": "my-index",
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"_version": -3,
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"_source": {
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"field2": "value2",
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"foo": "RAB"
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},
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"executed_pipelines": [
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"my-pipeline",
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"my-final-pipeline"
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]
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}
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}
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]
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}
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----
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////
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[source,console]
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----
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DELETE /my-index
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DELETE /_ingest/pipeline/*
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----
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[source,console-result]
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----
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{
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"acknowledged": true
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}
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----
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////
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