Add feature flag for subobjects auto

qa/ccs-common-rest/src/yamlRestTest/java/org/elasticsearch/test/rest/yaml/CcsCommonYamlTestSuiteIT.java

@@ -89,7 +89,8 @@ public class CcsCommonYamlTestSuiteIT extends ESClientYamlSuiteTestCase {
         .setting("xpack.security.enabled", "false")
         // geohex_grid requires gold license
         .setting("xpack.license.self_generated.type", "trial")
-        .feature(FeatureFlag.TIME_SERIES_MODE);
+        .feature(FeatureFlag.TIME_SERIES_MODE)
+        .feature(FeatureFlag.SUB_OBJECTS_AUTO_ENABLED);
 
     private static ElasticsearchCluster remoteCluster = ElasticsearchCluster.local()
         .name(REMOTE_CLUSTER_NAME)

qa/ccs-common-rest/src/yamlRestTest/java/org/elasticsearch/test/rest/yaml/RcsCcsCommonYamlTestSuiteIT.java

@@ -91,6 +91,7 @@ public class RcsCcsCommonYamlTestSuiteIT extends ESClientYamlSuiteTestCase {
         .setting("xpack.security.remote_cluster_server.ssl.enabled", "false")
         .setting("xpack.security.remote_cluster_client.ssl.enabled", "false")
         .feature(FeatureFlag.TIME_SERIES_MODE)
+        .feature(FeatureFlag.SUB_OBJECTS_AUTO_ENABLED)
         .user("test_admin", "x-pack-test-password");
 
     private static ElasticsearchCluster fulfillingCluster = ElasticsearchCluster.local()

qa/smoke-test-multinode/src/yamlRestTest/java/org/elasticsearch/smoketest/SmokeTestMultiNodeClientYamlTestSuiteIT.java

@@ -35,6 +35,7 @@ public class SmokeTestMultiNodeClientYamlTestSuiteIT extends ESClientYamlSuiteTe
         // The first node does not have the ingest role so we're sure ingest requests are forwarded:
         .node(0, n -> n.setting("node.roles", "[master,data,ml,remote_cluster_client,transform]"))
         .feature(FeatureFlag.TIME_SERIES_MODE)
+        .feature(FeatureFlag.SUB_OBJECTS_AUTO_ENABLED)
         .build();
 
     public SmokeTestMultiNodeClientYamlTestSuiteIT(@Name("yaml") ClientYamlTestCandidate testCandidate) {

rest-api-spec/src/yamlRestTest/java/org/elasticsearch/test/rest/ClientYamlTestSuiteIT.java

@@ -36,6 +36,7 @@ public class ClientYamlTestSuiteIT extends ESClientYamlSuiteTestCase {
         .module("health-shards-availability")
         .module("data-streams")
         .feature(FeatureFlag.TIME_SERIES_MODE)
+        .feature(FeatureFlag.SUB_OBJECTS_AUTO_ENABLED)
         .build();
 
     public ClientYamlTestSuiteIT(@Name("yaml") ClientYamlTestCandidate testCandidate) {

server/src/main/java/org/elasticsearch/index/mapper/ObjectMapper.java

@@ -15,6 +15,7 @@
 import org.elasticsearch.common.Explicit;
 import org.elasticsearch.common.logging.DeprecationCategory;
 import org.elasticsearch.common.logging.DeprecationLogger;
+import org.elasticsearch.common.util.FeatureFlag;
 import org.elasticsearch.common.xcontent.support.XContentMapValues;
 import org.elasticsearch.core.Nullable;
 import org.elasticsearch.features.NodeFeature;
@@ -41,6 +42,7 @@
 
 public class ObjectMapper extends Mapper {
     private static final DeprecationLogger deprecationLogger = DeprecationLogger.getLogger(ObjectMapper.class);
+    public static final FeatureFlag SUB_OBJECTS_AUTO_FEATURE_FLAG = new FeatureFlag("sub_objects_auto");
 
     public static final String CONTENT_TYPE = "object";
     static final String STORE_ARRAY_SOURCE_PARAM = "store_array_source";
@@ -74,7 +76,7 @@ public static Subobjects from(Object node) {
                 if (value.equalsIgnoreCase("false")) {
                     return DISABLED;
                 }
-                if (value.equalsIgnoreCase("auto")) {
+                if (SUB_OBJECTS_AUTO_FEATURE_FLAG.isEnabled() && value.equalsIgnoreCase("auto")) {
                     return AUTO;
                 }
             }

server/src/test/java/org/elasticsearch/index/mapper/DynamicTemplatesTests.java

@@ -1377,6 +1377,7 @@ public void testSubobjectsFalseWithInnerNestedFromDynamicTemplate() {
     }
 
     public void testSubobjectsAutoFlatPaths() throws IOException {
+        assumeTrue("only test when feature flag for subobjects auto is enabled", ObjectMapper.SUB_OBJECTS_AUTO_FEATURE_FLAG.isEnabled());
         MapperService mapperService = createDynamicTemplateAutoSubobjects();
         ParsedDocument doc = mapperService.documentMapper().parse(source(b -> {
             b.field("foo.metric.count", 10);
@@ -1389,6 +1390,7 @@ public void testSubobjectsAutoFlatPaths() throws IOException {
     }
 
     public void testSubobjectsAutoStructuredPaths() throws IOException {
+        assumeTrue("only test when feature flag for subobjects auto is enabled", ObjectMapper.SUB_OBJECTS_AUTO_FEATURE_FLAG.isEnabled());
         MapperService mapperService = createDynamicTemplateAutoSubobjects();
         ParsedDocument doc = mapperService.documentMapper().parse(source(b -> {
             b.startObject("foo");
@@ -1411,6 +1413,7 @@ public void testSubobjectsAutoStructuredPaths() throws IOException {
     }
 
     public void testSubobjectsAutoArrayOfObjects() throws IOException {
+        assumeTrue("only test when feature flag for subobjects auto is enabled", ObjectMapper.SUB_OBJECTS_AUTO_FEATURE_FLAG.isEnabled());
         MapperService mapperService = createDynamicTemplateAutoSubobjects();
         ParsedDocument doc = mapperService.documentMapper().parse(source(b -> {
             b.startObject("foo");
@@ -1444,6 +1447,7 @@ public void testSubobjectsAutoArrayOfObjects() throws IOException {
     }
 
     public void testSubobjectAutoDynamicNested() throws IOException {
+        assumeTrue("only test when feature flag for subobjects auto is enabled", ObjectMapper.SUB_OBJECTS_AUTO_FEATURE_FLAG.isEnabled());
         DocumentMapper mapper = createDocumentMapper(topMapping(b -> {
             b.startArray("dynamic_templates");
             {
@@ -1482,6 +1486,7 @@ public void testSubobjectAutoDynamicNested() throws IOException {
     }
 
     public void testRootSubobjectAutoDynamicNested() throws IOException {
+        assumeTrue("only test when feature flag for subobjects auto is enabled", ObjectMapper.SUB_OBJECTS_AUTO_FEATURE_FLAG.isEnabled());
         DocumentMapper mapper = createDocumentMapper(topMapping(b -> {
             b.startArray("dynamic_templates");
             {
@@ -1515,6 +1520,7 @@ public void testRootSubobjectAutoDynamicNested() throws IOException {
     }
 
     public void testDynamicSubobjectsAutoDynamicFalse() throws Exception {
+        assumeTrue("only test when feature flag for subobjects auto is enabled", ObjectMapper.SUB_OBJECTS_AUTO_FEATURE_FLAG.isEnabled());
         // verify that we read the dynamic value properly from the parent mapper. DocumentParser#dynamicOrDefault splits the field
         // name where dots are found, but it does that only for the parent prefix e.g. metrics.service and not for the leaf suffix time.max
         DocumentMapper mapper = createDocumentMapper(topMapping(b -> {
@@ -1578,6 +1584,7 @@ public void testDynamicSubobjectsAutoDynamicFalse() throws Exception {
     }
 
     public void testSubobjectsAutoWithInnerNestedFromDynamicTemplate() throws IOException {
+        assumeTrue("only test when feature flag for subobjects auto is enabled", ObjectMapper.SUB_OBJECTS_AUTO_FEATURE_FLAG.isEnabled());
         DocumentMapper mapper = createDocumentMapper(topMapping(b -> {
             b.startArray("dynamic_templates");
             {
@@ -2045,6 +2052,7 @@ public void testSubobjectsFalseFlattened() throws IOException {
     }
 
     public void testSubobjectsAutoFlattened() throws IOException {
+        assumeTrue("only test when feature flag for subobjects auto is enabled", ObjectMapper.SUB_OBJECTS_AUTO_FEATURE_FLAG.isEnabled());
         String mapping = """
             {
               "_doc": {

server/src/test/java/org/elasticsearch/index/mapper/ObjectMapperTests.java

@@ -169,27 +169,29 @@ public void testMergeEnabledForIndexTemplates() throws IOException {
         assertEquals(ObjectMapper.Subobjects.ENABLED, objectMapper.subobjects());
         assertTrue(objectMapper.sourceKeepMode().isEmpty());
 
-        // Setting 'enabled' to true is allowed, and updates the mapping.
-        update = Strings.toString(
-            XContentFactory.jsonBuilder()
-                .startObject()
-                .startObject("properties")
-                .startObject("object")
-                .field("type", "object")
-                .field("enabled", true)
-                .field("subobjects", "auto")
-                .field(ObjectMapper.STORE_ARRAY_SOURCE_PARAM, true)
-                .endObject()
-                .endObject()
-                .endObject()
-        );
-        mapper = mapperService.merge("type", new CompressedXContent(update), MergeReason.INDEX_TEMPLATE);
-
-        objectMapper = mapper.mappers().objectMappers().get("object");
-        assertNotNull(objectMapper);
-        assertTrue(objectMapper.isEnabled());
-        assertEquals(ObjectMapper.Subobjects.AUTO, objectMapper.subobjects());
-        assertEquals(Mapper.SourceKeepMode.ARRAYS, objectMapper.sourceKeepMode().orElse(Mapper.SourceKeepMode.NONE));
+        if (ObjectMapper.SUB_OBJECTS_AUTO_FEATURE_FLAG.isEnabled()) {
+            // Setting 'enabled' to true is allowed, and updates the mapping.
+            update = Strings.toString(
+                XContentFactory.jsonBuilder()
+                    .startObject()
+                    .startObject("properties")
+                    .startObject("object")
+                    .field("type", "object")
+                    .field("enabled", true)
+                    .field("subobjects", "auto")
+                    .field(ObjectMapper.STORE_ARRAY_SOURCE_PARAM, true)
+                    .endObject()
+                    .endObject()
+                    .endObject()
+            );
+            mapper = mapperService.merge("type", new CompressedXContent(update), MergeReason.INDEX_TEMPLATE);
+
+            objectMapper = mapper.mappers().objectMappers().get("object");
+            assertNotNull(objectMapper);
+            assertTrue(objectMapper.isEnabled());
+            assertEquals(ObjectMapper.Subobjects.AUTO, objectMapper.subobjects());
+            assertEquals(Mapper.SourceKeepMode.ARRAYS, objectMapper.sourceKeepMode().orElse(Mapper.SourceKeepMode.NONE));
+        }
     }
 
     public void testFieldReplacementForIndexTemplates() throws IOException {
@@ -503,6 +505,7 @@ public void testSubobjectsCannotBeUpdatedOnRoot() throws IOException {
     }
 
     public void testSubobjectsAuto() throws Exception {
+        assumeTrue("only test when feature flag for subobjects auto is enabled", ObjectMapper.SUB_OBJECTS_AUTO_FEATURE_FLAG.isEnabled());
         MapperService mapperService = createMapperService(mapping(b -> {
             b.startObject("metrics.service");
             {
@@ -532,6 +535,7 @@ public void testSubobjectsAuto() throws Exception {
     }
 
     public void testSubobjectsAutoWithInnerObject() throws IOException {
+        assumeTrue("only test when feature flag for subobjects auto is enabled", ObjectMapper.SUB_OBJECTS_AUTO_FEATURE_FLAG.isEnabled());
         MapperService mapperService = createMapperService(mapping(b -> {
             b.startObject("metrics.service");
             {
@@ -565,6 +569,7 @@ public void testSubobjectsAutoWithInnerObject() throws IOException {
     }
 
     public void testSubobjectsAutoWithInnerNested() throws IOException {
+        assumeTrue("only test when feature flag for subobjects auto is enabled", ObjectMapper.SUB_OBJECTS_AUTO_FEATURE_FLAG.isEnabled());
         MapperService mapperService = createMapperService(mapping(b -> {
             b.startObject("metrics.service");
             {
@@ -586,6 +591,7 @@ public void testSubobjectsAutoWithInnerNested() throws IOException {
     }
 
     public void testSubobjectsAutoRoot() throws Exception {
+        assumeTrue("only test when feature flag for subobjects auto is enabled", ObjectMapper.SUB_OBJECTS_AUTO_FEATURE_FLAG.isEnabled());
         MapperService mapperService = createMapperService(mappingWithSubobjects(b -> {
             b.startObject("metrics.service.time");
             b.field("type", "long");
@@ -606,6 +612,7 @@ public void testSubobjectsAutoRoot() throws Exception {
     }
 
     public void testSubobjectsAutoRootWithInnerObject() throws IOException {
+        assumeTrue("only test when feature flag for subobjects auto is enabled", ObjectMapper.SUB_OBJECTS_AUTO_FEATURE_FLAG.isEnabled());
         MapperService mapperService = createMapperService(mappingWithSubobjects(b -> {
             b.startObject("metrics.service.time");
             {
@@ -626,6 +633,7 @@ public void testSubobjectsAutoRootWithInnerObject() throws IOException {
     }
 
     public void testSubobjectsAutoRootWithInnerNested() throws IOException {
+        assumeTrue("only test when feature flag for subobjects auto is enabled", ObjectMapper.SUB_OBJECTS_AUTO_FEATURE_FLAG.isEnabled());
         MapperService mapperService = createMapperService(mappingWithSubobjects(b -> {
             b.startObject("metrics.service");
             b.field("type", "nested");

test/test-clusters/src/main/java/org/elasticsearch/test/cluster/FeatureFlag.java

@@ -18,6 +18,7 @@
 public enum FeatureFlag {
     TIME_SERIES_MODE("es.index_mode_feature_flag_registered=true", Version.fromString("8.0.0"), null),
     FAILURE_STORE_ENABLED("es.failure_store_feature_flag_enabled=true", Version.fromString("8.12.0"), null),
+    SUB_OBJECTS_AUTO_ENABLED("es.sub_objects_auto_feature_flag_enabled=true", Version.fromString("8.16.0"), null),
     CHUNKING_SETTINGS_ENABLED("es.inference_chunking_settings_feature_flag_enabled=true", Version.fromString("8.16.0"), null),
     INFERENCE_DEFAULT_ELSER("es.inference_default_elser_feature_flag_enabled=true", Version.fromString("8.16.0"), null);
 

x-pack/plugin/src/yamlRestTest/java/org/elasticsearch/xpack/test/rest/XPackRestIT.java

@@ -43,6 +43,7 @@ public class XPackRestIT extends AbstractXPackRestTest {
         .setting("xpack.searchable.snapshot.shared_cache.region_size", "256KB")
         .user("x_pack_rest_user", "x-pack-test-password")
         .feature(FeatureFlag.TIME_SERIES_MODE)
+        .feature(FeatureFlag.SUB_OBJECTS_AUTO_ENABLED)
         .configFile("testnode.pem", Resource.fromClasspath("org/elasticsearch/xpack/security/transport/ssl/certs/simple/testnode.pem"))
         .configFile("testnode.crt", Resource.fromClasspath("org/elasticsearch/xpack/security/transport/ssl/certs/simple/testnode.crt"))
         .configFile("service_tokens", Resource.fromClasspath("service_tokens"))

x-pack/qa/core-rest-tests-with-security/src/yamlRestTest/java/org/elasticsearch/xpack/security/CoreWithSecurityClientYamlTestSuiteIT.java

@@ -48,6 +48,7 @@ public class CoreWithSecurityClientYamlTestSuiteIT extends ESClientYamlSuiteTest
         .setting("xpack.security.autoconfiguration.enabled", "false")
         .user(USER, PASS)
         .feature(FeatureFlag.TIME_SERIES_MODE)
+        .feature(FeatureFlag.SUB_OBJECTS_AUTO_ENABLED)
         .build();
 
     public CoreWithSecurityClientYamlTestSuiteIT(@Name("yaml") ClientYamlTestCandidate testCandidate) {

x-pack/qa/runtime-fields/build.gradle

@@ -44,6 +44,7 @@ subprojects {
       setting 'xpack.security.enabled', 'false'
 
       requiresFeature 'es.index_mode_feature_flag_registered', Version.fromString("8.0.0")
+      requiresFeature 'es.sub_objects_auto_feature_flag_enabled', Version.fromString("8.16.0")
     }
 
     tasks.named("yamlRestTest").configure {