Adding to the documentation and tests for the _none pipeline (#93057)

docs/reference/index-modules.asciidoc

@@ -320,7 +320,7 @@ Defaults to `*`, which matches all fields eligible for
     Default <<ingest,ingest pipeline>> for the index. Index requests will fail
     if the default pipeline is set and the pipeline does not exist. The default may be
     overridden using the `pipeline` parameter. The special pipeline name `_none` indicates
-    no ingest pipeline should be run.
+    no default ingest pipeline will run.
 
 [[index-final-pipeline]]
 `index.final_pipeline`::
@@ -328,7 +328,7 @@ Final <<ingest,ingest pipeline>> for the index. Indexing requests
 will fail if the final pipeline is set and the pipeline does not exist.
 The final pipeline always runs after the request pipeline (if specified) and
 the default pipeline (if it exists). The special pipeline name `_none`
-indicates no ingest pipeline will run.
+indicates no final ingest pipeline will run.
 +
 NOTE: You can't use a final pipeline to change the `_index` field. If the
 pipeline attempts to change the `_index` field, the indexing request will fail.

docs/reference/rest-api/common-parms.asciidoc

@@ -713,7 +713,10 @@ end::payloads[]
 
 tag::pipeline[]
 `pipeline`::
-(Optional, string) ID of the pipeline to use to preprocess incoming documents.
+(Optional, string) ID of the pipeline to use to preprocess incoming documents. If the index has a
+default ingest pipeline specified, then setting the value to `_none` disables the default ingest
+pipeline for this request. If a final pipeline is configured it will always run, regardless of the
+value of this parameter.
 end::pipeline[]
 
 tag::pages-processed[]

modules/ingest-common/src/yamlRestTest/resources/rest-api-spec/test/ingest/70_bulk.yml

@@ -145,6 +145,45 @@ teardown:
   - is_false: _source.field1
   - match: {_source.field2: value2}
 
+---
+"Test bulk request with _none request pipeline and default pipeline":
+
+  - do:
+      bulk:
+        pipeline: pipeline1
+        body:
+          - index:
+              _index: test_index
+              _id:    test_id1
+          - f1: v1
+          - index:
+              _index: test_index
+              _id:    test_id2
+              pipeline: _none
+          - f1: v2
+  - gte: { ingest_took: 0 }
+
+  - do:
+      cluster.state: {}
+  # Get master node id
+  - set: { master_node: master }
+
+  - do:
+      get:
+        index: test_index
+        id: test_id1
+
+  - match: {_source.field1: value1}
+  - is_false: _source.field2
+
+  - do:
+      get:
+        index: test_index
+        id: test_id2
+
+  - is_false: _source.field1
+  - is_false: _source.field2
+
 ---
 "Update with pipeline":
   - skip:

server/src/test/java/org/elasticsearch/ingest/IngestServiceTests.java

@@ -2186,6 +2186,90 @@ public class IngestServiceTests extends ESTestCase {
         assertThat(updatedConfig.getVersion(), equalTo(existingVersion + 1));
     }
 
+    public void testResolvePipelinesWithNonePipeline() {
+        // _none request pipeline:
+        {
+            Metadata metadata = Metadata.builder().build();
+            IndexRequest indexRequest = new IndexRequest("idx").setPipeline(IngestService.NOOP_PIPELINE_NAME);
+            boolean result = IngestService.resolvePipelines(indexRequest, indexRequest, metadata);
+            assertThat(result, is(false));
+            assertThat(indexRequest.isPipelineResolved(), is(true));
+            assertThat(indexRequest.getPipeline(), equalTo(IngestService.NOOP_PIPELINE_NAME));
+        }
+
+        // _none default pipeline:
+        {
+            IndexMetadata.Builder builder = IndexMetadata.builder("idx")
+                .settings(settings(Version.CURRENT).put(IndexSettings.DEFAULT_PIPELINE.getKey(), IngestService.NOOP_PIPELINE_NAME))
+                .numberOfShards(1)
+                .numberOfReplicas(0);
+            Metadata metadata = Metadata.builder().put(builder).build();
+            IndexRequest indexRequest = new IndexRequest("idx");
+            boolean result = IngestService.resolvePipelines(indexRequest, indexRequest, metadata);
+            assertThat(result, is(false));
+            assertThat(indexRequest.isPipelineResolved(), is(true));
+            assertThat(indexRequest.getPipeline(), equalTo(IngestService.NOOP_PIPELINE_NAME));
+        }
+
+        // _none default pipeline with request pipeline:
+        {
+            IndexMetadata.Builder builder = IndexMetadata.builder("idx")
+                .settings(settings(Version.CURRENT).put(IndexSettings.DEFAULT_PIPELINE.getKey(), IngestService.NOOP_PIPELINE_NAME))
+                .numberOfShards(1)
+                .numberOfReplicas(0);
+            Metadata metadata = Metadata.builder().put(builder).build();
+            IndexRequest indexRequest = new IndexRequest("idx").setPipeline("pipeline1");
+            boolean result = IngestService.resolvePipelines(indexRequest, indexRequest, metadata);
+            assertThat(result, is(true));
+            assertThat(indexRequest.isPipelineResolved(), is(true));
+            assertThat(indexRequest.getPipeline(), equalTo("pipeline1"));
+        }
+
+        // _none request pipeline with default pipeline:
+        {
+            IndexMetadata.Builder builder = IndexMetadata.builder("idx")
+                .settings(settings(Version.CURRENT).put(IndexSettings.DEFAULT_PIPELINE.getKey(), "default-pipeline"))
+                .numberOfShards(1)
+                .numberOfReplicas(0);
+            Metadata metadata = Metadata.builder().put(builder).build();
+            IndexRequest indexRequest = new IndexRequest("idx").setPipeline(IngestService.NOOP_PIPELINE_NAME);
+            boolean result = IngestService.resolvePipelines(indexRequest, indexRequest, metadata);
+            assertThat(result, is(false));
+            assertThat(indexRequest.isPipelineResolved(), is(true));
+            assertThat(indexRequest.getPipeline(), equalTo(IngestService.NOOP_PIPELINE_NAME));
+        }
+
+        // _none request pipeline with final pipeline:
+        {
+            IndexMetadata.Builder builder = IndexMetadata.builder("idx")
+                .settings(settings(Version.CURRENT).put(IndexSettings.FINAL_PIPELINE.getKey(), "final-pipeline"))
+                .numberOfShards(1)
+                .numberOfReplicas(0);
+            Metadata metadata = Metadata.builder().put(builder).build();
+            IndexRequest indexRequest = new IndexRequest("idx").setPipeline(IngestService.NOOP_PIPELINE_NAME);
+            boolean result = IngestService.resolvePipelines(indexRequest, indexRequest, metadata);
+            assertThat(result, is(true));
+            assertThat(indexRequest.isPipelineResolved(), is(true));
+            assertThat(indexRequest.getPipeline(), equalTo(IngestService.NOOP_PIPELINE_NAME));
+            assertThat(indexRequest.getFinalPipeline(), equalTo("final-pipeline"));
+        }
+
+        // _none final pipeline:
+        {
+            IndexMetadata.Builder builder = IndexMetadata.builder("idx")
+                .settings(settings(Version.CURRENT).put(IndexSettings.FINAL_PIPELINE.getKey(), IngestService.NOOP_PIPELINE_NAME))
+                .numberOfShards(1)
+                .numberOfReplicas(0);
+            Metadata metadata = Metadata.builder().put(builder).build();
+            IndexRequest indexRequest = new IndexRequest("idx").setPipeline("pipeline1");
+            boolean result = IngestService.resolvePipelines(indexRequest, indexRequest, metadata);
+            assertThat(result, is(true));
+            assertThat(indexRequest.isPipelineResolved(), is(true));
+            assertThat(indexRequest.getPipeline(), equalTo("pipeline1"));
+            assertThat(indexRequest.getFinalPipeline(), equalTo(IngestService.NOOP_PIPELINE_NAME));
+        }
+    }
+
     private static Tuple<String, Object> randomMapEntry() {
         return tuple(randomAlphaOfLength(5), randomObject());
     }