Merge branch 'main' into unmute-UpdateResponseTests

.buildkite/pipelines/intake.yml

@@ -56,7 +56,7 @@ steps:
         timeout_in_minutes: 300
         matrix:
           setup:
-            BWC_VERSION: ["8.15.6", "8.16.2", "8.17.0", "8.18.0", "9.0.0"]
+            BWC_VERSION: ["8.16.2", "8.17.0", "8.18.0", "9.0.0"]
         agents:
           provider: gcp
           image: family/elasticsearch-ubuntu-2004

.buildkite/pipelines/periodic-packaging.template.yml

@@ -18,6 +18,7 @@ steps:
               - rhel-8
               - rhel-9
               - almalinux-8
+              - almalinux-9
         agents:
           provider: gcp
           image: family/elasticsearch-{{matrix.image}}

.buildkite/pipelines/periodic-packaging.yml

@@ -19,6 +19,7 @@ steps:
               - rhel-8
               - rhel-9
               - almalinux-8
+              - almalinux-9
         agents:
           provider: gcp
           image: family/elasticsearch-{{matrix.image}}
@@ -268,8 +269,8 @@ steps:
         env:
           BWC_VERSION: 8.14.3
 
-      - label: "{{matrix.image}} / 8.15.6 / packaging-tests-upgrade"
-        command: ./.ci/scripts/packaging-test.sh -Dbwc.checkout.align=true destructiveDistroUpgradeTest.v8.15.6
+      - label: "{{matrix.image}} / 8.15.5 / packaging-tests-upgrade"
+        command: ./.ci/scripts/packaging-test.sh -Dbwc.checkout.align=true destructiveDistroUpgradeTest.v8.15.5
         timeout_in_minutes: 300
         matrix:
           setup:
@@ -282,7 +283,7 @@ steps:
           machineType: custom-16-32768
           buildDirectory: /dev/shm/bk
         env:
-          BWC_VERSION: 8.15.6
+          BWC_VERSION: 8.15.5
 
       - label: "{{matrix.image}} / 8.16.2 / packaging-tests-upgrade"
         command: ./.ci/scripts/packaging-test.sh -Dbwc.checkout.align=true destructiveDistroUpgradeTest.v8.16.2

.buildkite/pipelines/periodic-platform-support.yml

@@ -18,6 +18,7 @@ steps:
               - rhel-8
               - rhel-9
               - almalinux-8
+              - almalinux-9
         agents:
           provider: gcp
           image: family/elasticsearch-{{matrix.image}}

.buildkite/pipelines/periodic.yml

@@ -287,8 +287,8 @@ steps:
             - signal_reason: agent_stop
               limit: 3
 
-      - label: 8.15.6 / bwc
-        command: .ci/scripts/run-gradle.sh -Dbwc.checkout.align=true v8.15.6#bwcTest
+      - label: 8.15.5 / bwc
+        command: .ci/scripts/run-gradle.sh -Dbwc.checkout.align=true v8.15.5#bwcTest
         timeout_in_minutes: 300
         agents:
           provider: gcp
@@ -297,7 +297,7 @@ steps:
           buildDirectory: /dev/shm/bk
           preemptible: true
         env:
-          BWC_VERSION: 8.15.6
+          BWC_VERSION: 8.15.5
         retry:
           automatic:
             - exit_status: "-1"
@@ -448,7 +448,7 @@ steps:
           setup:
             ES_RUNTIME_JAVA:
               - openjdk21
-            BWC_VERSION: ["8.15.6", "8.16.2", "8.17.0", "8.18.0", "9.0.0"]
+            BWC_VERSION: ["8.16.2", "8.17.0", "8.18.0", "9.0.0"]
         agents:
           provider: gcp
           image: family/elasticsearch-ubuntu-2004
@@ -490,7 +490,7 @@ steps:
             ES_RUNTIME_JAVA:
               - openjdk21
               - openjdk23
-            BWC_VERSION: ["8.15.6", "8.16.2", "8.17.0", "8.18.0", "9.0.0"]
+            BWC_VERSION: ["8.16.2", "8.17.0", "8.18.0", "9.0.0"]
         agents:
           provider: gcp
           image: family/elasticsearch-ubuntu-2004

.buildkite/pipelines/pull-request/packaging-tests-unix.yml

@@ -21,6 +21,7 @@ steps:
               - rhel-8
               - rhel-9
               - almalinux-8
+              - almalinux-9
             PACKAGING_TASK:
               - docker
               - docker-cloud-ess

.ci/bwcVersions

@@ -14,7 +14,7 @@ BWC_VERSION:
   - "8.12.2"
   - "8.13.4"
   - "8.14.3"
-  - "8.15.6"
+  - "8.15.5"
   - "8.16.2"
   - "8.17.0"
   - "8.18.0"

.ci/snapshotBwcVersions

@@ -1,5 +1,4 @@
 BWC_VERSION:
-  - "8.15.6"
   - "8.16.2"
   - "8.17.0"
   - "8.18.0"

benchmarks/src/main/java/org/elasticsearch/benchmark/search/fetch/subphase/FetchSourcePhaseBenchmark.java

@@ -63,7 +63,7 @@ public void setup() throws IOException {
         );
         includesSet = Set.of(fetchContext.includes());
         excludesSet = Set.of(fetchContext.excludes());
-        parserConfig = XContentParserConfiguration.EMPTY.withFiltering(includesSet, excludesSet, false);
+        parserConfig = XContentParserConfiguration.EMPTY.withFiltering(null, includesSet, excludesSet, false);
     }
 
     private BytesReference read300BytesExample() throws IOException {

benchmarks/src/main/java/org/elasticsearch/benchmark/xcontent/FilterContentBenchmark.java

@@ -170,7 +170,7 @@ private XContentParserConfiguration buildParseConfig(boolean matchDotsInFieldNam
             includes = null;
             excludes = filters;
         }
-        return XContentParserConfiguration.EMPTY.withFiltering(includes, excludes, matchDotsInFieldNames);
+        return XContentParserConfiguration.EMPTY.withFiltering(null, includes, excludes, matchDotsInFieldNames);
     }
 
     private BytesReference filter(XContentParserConfiguration contentParserConfiguration) throws IOException {

branches.json

@@ -13,9 +13,6 @@
     {
       "branch": "8.x"
     },
-    {
-      "branch": "8.15"
-    },
     {
       "branch": "7.17"
     }

build-conventions/src/main/java/org/elasticsearch/gradle/internal/conventions/precommit/FormattingPrecommitPlugin.java

@@ -17,8 +17,6 @@
 import org.gradle.api.Project;
 
 import java.io.File;
-import java.util.Arrays;
-import java.util.Map;
 
 /**
  * This plugin configures formatting for Java source using Spotless
@@ -66,8 +64,7 @@ public void apply(Project project) {
                 java.importOrderFile(new File(elasticsearchWorkspace, importOrderPath));
 
                 // Most formatting is done through the Eclipse formatter
-                java.eclipse().withP2Mirrors(Map.of("https://download.eclipse.org/", "https://mirror.umd.edu/eclipse/"))
-                    .configFile(new File(elasticsearchWorkspace, formatterConfigPath));
+                java.eclipse().configFile(new File(elasticsearchWorkspace, formatterConfigPath));
 
                 // Ensure blank lines are actually empty. Since formatters are applied in
                 // order, apply this one last, otherwise non-empty blank lines can creep

build-tools-internal/src/integTest/groovy/org/elasticsearch/gradle/internal/PublishPluginFuncTest.groovy

@@ -439,7 +439,7 @@ class PublishPluginFuncTest extends AbstractGradleFuncTest {
         // scm info only added for internal builds
         internalBuild()
         buildFile << """
-            buildParams.getGitOriginProperty().set("https://some-repo.com/repo.git")
+            buildParams.setGitOrigin("https://some-repo.com/repo.git")
             apply plugin:'elasticsearch.java'
             apply plugin:'elasticsearch.publish'
 

build-tools-internal/src/main/java/org/elasticsearch/gradle/internal/BwcVersions.java

@@ -252,6 +252,20 @@ private List<Version> getReleased() {
             .toList();
     }
 
+    public List<Version> getReadOnlyIndexCompatible() {
+        // Lucene can read indices in version N-2
+        int compatibleMajor = currentVersion.getMajor() - 2;
+        return versions.stream().filter(v -> v.getMajor() == compatibleMajor).sorted(Comparator.naturalOrder()).toList();
+    }
+
+    public void withLatestReadOnlyIndexCompatible(Consumer<Version> versionAction) {
+        var compatibleVersions = getReadOnlyIndexCompatible();
+        if (compatibleVersions == null || compatibleVersions.isEmpty()) {
+            throw new IllegalStateException("No read-only compatible version found.");
+        }
+        versionAction.accept(compatibleVersions.getLast());
+    }
+
     /**
      * Return versions of Elasticsearch which are index compatible with the current version.
      */

build-tools-internal/src/main/java/org/elasticsearch/gradle/internal/ElasticsearchJavaBasePlugin.java

@@ -132,7 +132,7 @@ private static void disableTransitiveDependenciesForSourceSet(Project project, S
     public void configureCompile(Project project) {
         project.getExtensions().getExtraProperties().set("compactProfile", "full");
         JavaPluginExtension java = project.getExtensions().getByType(JavaPluginExtension.class);
-        if (buildParams.getJavaToolChainSpec().isPresent()) {
+        if (buildParams.getJavaToolChainSpec().getOrNull() != null) {
             java.toolchain(buildParams.getJavaToolChainSpec().get());
         }
         java.setSourceCompatibility(buildParams.getMinimumRuntimeVersion());

build-tools-internal/src/main/java/org/elasticsearch/gradle/internal/ElasticsearchTestBasePlugin.java

@@ -13,7 +13,6 @@
 
 import org.elasticsearch.gradle.OS;
 import org.elasticsearch.gradle.internal.conventions.util.Util;
-import org.elasticsearch.gradle.internal.info.BuildParameterExtension;
 import org.elasticsearch.gradle.internal.info.GlobalBuildInfoPlugin;
 import org.elasticsearch.gradle.internal.test.ErrorReportingTestListener;
 import org.elasticsearch.gradle.internal.test.SimpleCommandLineArgumentProvider;
@@ -27,7 +26,6 @@
 import org.gradle.api.artifacts.Configuration;
 import org.gradle.api.file.FileCollection;
 import org.gradle.api.plugins.JavaPlugin;
-import org.gradle.api.provider.Property;
 import org.gradle.api.provider.ProviderFactory;
 import org.gradle.api.tasks.SourceSet;
 import org.gradle.api.tasks.SourceSetContainer;
@@ -56,8 +54,7 @@ public abstract class ElasticsearchTestBasePlugin implements Plugin<Project> {
     @Override
     public void apply(Project project) {
         project.getRootProject().getPlugins().apply(GlobalBuildInfoPlugin.class);
-        Property<BuildParameterExtension> buildParams = loadBuildParams(project);
-
+        var buildParams = loadBuildParams(project);
         project.getPluginManager().apply(GradleTestPolicySetupPlugin.class);
         // for fips mode check
         project.getRootProject().getPluginManager().apply(GlobalBuildInfoPlugin.class);

build-tools-internal/src/main/java/org/elasticsearch/gradle/internal/InternalDistributionBwcSetupPlugin.java

@@ -66,7 +66,7 @@ public void apply(Project project) {
         project.getRootProject().getPluginManager().apply(GlobalBuildInfoPlugin.class);
         project.getPlugins().apply(JvmToolchainsPlugin.class);
         toolChainService = project.getExtensions().getByType(JavaToolchainService.class);
-        BuildParameterExtension buildParams = loadBuildParams(project).get();
+        var buildParams = loadBuildParams(project).get();
         Boolean isCi = buildParams.isCi();
         buildParams.getBwcVersions().forPreviousUnreleased((BwcVersions.UnreleasedVersionInfo unreleasedVersion) -> {
             configureBwcProject(

build-tools-internal/src/main/java/org/elasticsearch/gradle/internal/InternalDistributionDownloadPlugin.java

@@ -20,7 +20,6 @@
 import org.elasticsearch.gradle.internal.distribution.InternalElasticsearchDistributionTypes;
 import org.elasticsearch.gradle.internal.docker.DockerSupportPlugin;
 import org.elasticsearch.gradle.internal.docker.DockerSupportService;
-import org.elasticsearch.gradle.internal.info.BuildParameterExtension;
 import org.elasticsearch.gradle.internal.info.GlobalBuildInfoPlugin;
 import org.elasticsearch.gradle.util.GradleUtils;
 import org.gradle.api.GradleException;
@@ -49,7 +48,7 @@ public void apply(Project project) {
         // this is needed for isInternal
         project.getRootProject().getPluginManager().apply(GlobalBuildInfoPlugin.class);
         project.getRootProject().getPluginManager().apply(DockerSupportPlugin.class);
-        BuildParameterExtension buildParams = loadBuildParams(project).get();
+        var buildParams = loadBuildParams(project).get();
 
         DistributionDownloadPlugin distributionDownloadPlugin = project.getPlugins().apply(DistributionDownloadPlugin.class);
         Provider<DockerSupportService> dockerSupport = GradleUtils.getBuildService(
@@ -61,7 +60,7 @@ public void apply(Project project) {
         );
         registerInternalDistributionResolutions(
             DistributionDownloadPlugin.getRegistrationsContainer(project),
-            buildParams.getBwcVersionsProperty()
+            buildParams.getBwcVersionsProvider()
         );
     }
 

build-tools-internal/src/main/java/org/elasticsearch/gradle/internal/InternalTestClustersPlugin.java

@@ -10,7 +10,6 @@
 package org.elasticsearch.gradle.internal;
 
 import org.elasticsearch.gradle.VersionProperties;
-import org.elasticsearch.gradle.internal.info.BuildParameterExtension;
 import org.elasticsearch.gradle.internal.info.GlobalBuildInfoPlugin;
 import org.elasticsearch.gradle.testclusters.ElasticsearchCluster;
 import org.elasticsearch.gradle.testclusters.TestClustersPlugin;
@@ -26,7 +25,7 @@ public class InternalTestClustersPlugin implements Plugin<Project> {
     public void apply(Project project) {
         project.getPlugins().apply(InternalDistributionDownloadPlugin.class);
         project.getRootProject().getRootProject().getPlugins().apply(GlobalBuildInfoPlugin.class);
-        BuildParameterExtension buildParams = loadBuildParams(project).get();
+        var buildParams = loadBuildParams(project).get();
         project.getRootProject().getPluginManager().apply(InternalReaperPlugin.class);
         TestClustersPlugin testClustersPlugin = project.getPlugins().apply(TestClustersPlugin.class);
         testClustersPlugin.setRuntimeJava(buildParams.getRuntimeJavaHome());