Separate minimum compiler and runtime Java version properties (#79108)

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

@@ -15,13 +15,11 @@ import org.gradle.api.file.RegularFileProperty;
 import org.gradle.api.provider.ProviderFactory;
 import org.gradle.api.services.BuildService;
 import org.gradle.api.services.BuildServiceParameters;
-import org.gradle.initialization.layout.BuildLayout;
-import org.gradle.initialization.layout.BuildLayoutFactory;
 
-import javax.inject.Inject;
 import java.io.File;
 import java.io.IOException;
 import java.util.Properties;
+import javax.inject.Inject;
 
 abstract class VersionPropertiesBuildService implements BuildService<VersionPropertiesBuildService.Params>, AutoCloseable {
 
@@ -33,15 +31,24 @@ abstract class VersionPropertiesBuildService implements BuildService<VersionProp
         try {
             File propertiesInputFile = new File(infoPath, "version.properties");
             properties = VersionPropertiesLoader.loadBuildSrcVersion(propertiesInputFile, providerFactory);
-            properties.computeIfAbsent("minimumJava", s -> resolveMinimumJavaVersion(infoPath));
+            properties.computeIfAbsent("minimumRuntimeJava", s -> resolveMinimumRuntimeJavaVersion(infoPath));
+            properties.computeIfAbsent("minimumCompilerJava", s -> resolveMinimumCompilerJavaVersion(infoPath));
         } catch (IOException e) {
             throw new GradleException("Cannot load VersionPropertiesBuildService", e);
         }
     }
 
-    private JavaVersion resolveMinimumJavaVersion(File infoPath) {
+    private JavaVersion resolveMinimumRuntimeJavaVersion(File infoPath) {
+        return resolveJavaVersion(infoPath, "src/main/resources/minimumRuntimeVersion");
+    }
+
+    private JavaVersion resolveMinimumCompilerJavaVersion(File infoPath) {
+        return resolveJavaVersion(infoPath, "src/main/resources/minimumCompilerVersion");
+    }
+
+    private JavaVersion resolveJavaVersion(File infoPath, String path) {
         final JavaVersion minimumJavaVersion;
-        File minimumJavaInfoSource = new File(infoPath, "src/main/resources/minimumRuntimeVersion");
+        File minimumJavaInfoSource = new File(infoPath, path);
         try {
             String versionString = FileUtils.readFileToString(minimumJavaInfoSource);
             minimumJavaVersion = JavaVersion.toVersion(versionString);

build-tools-internal/build.gradle

@@ -6,13 +6,6 @@
  * Side Public License, v 1.
  */
 
-
-import org.elasticsearch.gradle.internal.conventions.VersionPropertiesLoader
-import org.apache.tools.ant.taskdefs.condition.Os
-import org.gradle.plugins.ide.eclipse.model.AccessRule
-import org.gradle.plugins.ide.eclipse.model.SourceFolder
-import org.gradle.plugins.ide.eclipse.model.ProjectDependency
-
 plugins {
   id 'java-gradle-plugin'
   id 'groovy-gradle-plugin'
@@ -170,7 +163,7 @@ gradlePlugin {
  *         Java version                                                      *
  *****************************************************************************/
 
-def minCompilerJava = versions.get("minimumJava")
+def minCompilerJava = versions.get("minimumCompilerJava")
 targetCompatibility = minCompilerJava
 sourceCompatibility = minCompilerJava
 

build-tools/build.gradle

@@ -5,7 +5,6 @@
  * in compliance with, at your election, the Elastic License 2.0 or the Server
  * Side Public License, v 1.
  */
-import org.elasticsearch.gradle.internal.conventions.VersionPropertiesLoader
 
 plugins {
     id 'java-gradle-plugin'
@@ -22,8 +21,8 @@ description = "The elasticsearch build tools"
 
 group = "org.elasticsearch.gradle"
 version = versions.getProperty("elasticsearch")
-targetCompatibility = versions.get("minimumJava")
-sourceCompatibility = versions.get("minimumJava")
+targetCompatibility = versions.get("minimumRuntimeJava")
+sourceCompatibility = versions.get("minimumRuntimeJava")
 
 gradlePlugin {
     // We already configure publication and we don't need or want the one that comes

build-tools/reaper/build.gradle

@@ -7,8 +7,8 @@ plugins {
 
 group = "org.elasticsearch.gradle"
 version = versions.getProperty("elasticsearch")
-targetCompatibility = versions.get("minimumJava")
-sourceCompatibility = versions.get("minimumJava")
+targetCompatibility = versions.get("minimumRuntimeJava")
+sourceCompatibility = versions.get("minimumRuntimeJava")
 
 tasks.named("jar").configure {
   archiveFileName = "${project.name}.jar"