Enable Semantic Search CCS When ccs_minimize_roundtrips=true

docs/changelog/135309.yaml

@@ -0,0 +1,5 @@
+pr: 135309
+summary: Enable semantic search CCS when ccs_minimize_roundtrips=true
+area: Vector Search
+type: enhancement
+issues: []

server/src/main/resources/transport/definitions/referable/semantic_search_ccs_support.csv

@@ -0,0 +1 @@
+9174000

server/src/main/resources/transport/upper_bounds/9.2.csv

@@ -1 +1 @@
-sampling_configuration,9173000
+semantic_search_ccs_support,9174000

x-pack/plugin/core/src/test/java/org/elasticsearch/xpack/core/LocalStateCompositeXPackPlugin.java

@@ -79,6 +79,8 @@
 import org.elasticsearch.plugins.ShutdownAwarePlugin;
 import org.elasticsearch.plugins.SystemIndexPlugin;
 import org.elasticsearch.plugins.interceptor.RestServerActionPlugin;
+import org.elasticsearch.plugins.internal.InternalSearchPlugin;
+import org.elasticsearch.plugins.internal.rewriter.QueryRewriteInterceptor;
 import org.elasticsearch.repositories.RepositoriesMetrics;
 import org.elasticsearch.repositories.Repository;
 import org.elasticsearch.repositories.SnapshotMetrics;
@@ -135,6 +137,7 @@ public class LocalStateCompositeXPackPlugin extends XPackPlugin
         IndexStorePlugin,
         SystemIndexPlugin,
         SearchPlugin,
+        InternalSearchPlugin,
         ShutdownAwarePlugin,
         RestServerActionPlugin {
 
@@ -291,6 +294,15 @@ public List<QuerySpec<?>> getQueries() {
         return querySpecs;
     }
 
+    @Override
+    public List<QueryRewriteInterceptor> getQueryRewriteInterceptors() {
+        List<QueryRewriteInterceptor> interceptors = new ArrayList<>();
+        filterPlugins(InternalSearchPlugin.class).stream()
+            .flatMap(p -> p.getQueryRewriteInterceptors().stream())
+            .forEach(interceptors::add);
+        return interceptors;
+    }
+
     @Override
     public List<NamedXContentRegistry.Entry> getNamedXContent() {
         List<NamedXContentRegistry.Entry> entries = new ArrayList<>(super.getNamedXContent());

x-pack/plugin/inference/build.gradle

@@ -36,6 +36,7 @@ dependencies {
   testImplementation(project(':x-pack:plugin:inference:qa:test-service-plugin'))
   testImplementation project(':modules:reindex')
   testImplementation project(':modules:mapper-extras')
+  testImplementation project(':x-pack:plugin:ml')
   clusterPlugins project(':x-pack:plugin:inference:qa:test-service-plugin')
 
   api "com.ibm.icu:icu4j:${versions.icu4j}"