fix: Skip builders when build server is disabled (#1424)

Signed-off-by: Sheng Chen <sheche@microsoft.com>

extension/jdtls.ext/com.microsoft.gradle.bs.importer/src/com/microsoft/gradle/bs/importer/GradleBuildServerProjectImporter.java

@@ -1,7 +1,5 @@
 package com.microsoft.gradle.bs.importer;
 
-import static org.eclipse.jdt.ls.core.internal.handlers.MapFlattener.getString;
-
 import java.io.File;
 import java.net.URI;
 import java.util.Arrays;
@@ -57,20 +55,14 @@ public class GradleBuildServerProjectImporter extends AbstractProjectImporter {
     public static final String SETTINGS_GRADLE_DESCRIPTOR = "settings.gradle";
     public static final String SETTINGS_GRADLE_KTS_DESCRIPTOR = "settings.gradle.kts";
 
-    private static final String JAVA_BUILD_SERVER_GRADLE_ENABLED = "java.gradle.buildServer.enabled";
-
     @Override
     public boolean applies(IProgressMonitor monitor) throws OperationCanceledException, CoreException {
         if (rootFolder == null) {
             return false;
         }
 
-        Preferences preferences = getPreferences();
-        if (!preferences.isImportGradleEnabled()) {
-            return false;
-        }
 
-        if (!isBuildServerEnabled()) {
+        if (!Utils.isBuildServerEnabled(getPreferences())) {
             return false;
         }
 
@@ -264,10 +256,4 @@ public class GradleBuildServerProjectImporter extends AbstractProjectImporter {
         pref.setJdks(EclipseVmUtil.getAllVmInstalls());
         return pref;
     }
-
-    private boolean isBuildServerEnabled() {
-        Preferences preferences = getPreferences();
-        String bspImporterEnabled = getString(preferences.asMap(), JAVA_BUILD_SERVER_GRADLE_ENABLED);
-        return "on".equalsIgnoreCase(bspImporterEnabled);
-    }
 }

extension/jdtls.ext/com.microsoft.gradle.bs.importer/src/com/microsoft/gradle/bs/importer/Utils.java

@@ -1,5 +1,7 @@
 package com.microsoft.gradle.bs.importer;
 
+import static org.eclipse.jdt.ls.core.internal.handlers.MapFlattener.getString;
+
 import java.net.URI;
 import java.net.URISyntaxException;
 import java.util.Arrays;
@@ -20,6 +22,7 @@ import org.eclipse.core.runtime.SubMonitor;
 import org.eclipse.core.runtime.URIUtil;
 import org.eclipse.jdt.core.JavaCore;
 import org.eclipse.jdt.ls.core.internal.ProjectUtils;
+import org.eclipse.jdt.ls.core.internal.preferences.Preferences;
 
 import com.microsoft.gradle.bs.importer.builder.BuildServerBuilder;
 
@@ -29,6 +32,8 @@ import ch.epfl.scala.bsp4j.WorkspaceBuildTargetsResult;
 public class Utils {
     private Utils() {}
 
+    private static final String JAVA_BUILD_SERVER_GRADLE_ENABLED = "java.gradle.buildServer.enabled";
+
     public static boolean isGradleBuildServerProject(IProject project) {
         return ProjectUtils.hasNature(project, GradleBuildServerProjectNature.NATURE_ID);
     }
@@ -189,4 +194,17 @@ public class Utils {
     buildSpec.setBuilding(IncrementalProjectBuilder.CLEAN_BUILD, false);
     return buildSpec;
   }
+
+  public static boolean isBuildServerEnabled(Preferences preferences) {
+    if (preferences == null) {
+      return false;
+    }
+
+    if (!preferences.isImportGradleEnabled()) {
+      return false;
+    }
+
+    String bspImporterEnabled = getString(preferences.asMap(), JAVA_BUILD_SERVER_GRADLE_ENABLED);
+    return "on".equalsIgnoreCase(bspImporterEnabled);
+  }
 }

extension/jdtls.ext/com.microsoft.gradle.bs.importer/src/com/microsoft/gradle/bs/importer/builder/BuildServerBuilder.java

@@ -15,6 +15,7 @@ import org.eclipse.core.runtime.IStatus;
 import org.eclipse.core.runtime.Status;
 import org.eclipse.jdt.ls.core.internal.JavaLanguageServerPlugin;
 import org.eclipse.jdt.ls.core.internal.ProjectUtils;
+import org.eclipse.jdt.ls.core.internal.preferences.Preferences;
 
 import com.microsoft.gradle.bs.importer.BuildServerConnection;
 import com.microsoft.gradle.bs.importer.ImporterPlugin;
@@ -32,6 +33,11 @@ public class BuildServerBuilder extends IncrementalProjectBuilder {
 
     @Override
     protected IProject[] build(int kind, Map<String, String> args, IProgressMonitor monitor) throws CoreException {
+        Preferences preferences = JavaLanguageServerPlugin.getPreferencesManager().getPreferences();
+        if (!Utils.isBuildServerEnabled(preferences)) {
+            return null;
+        }
+
         IProject project = this.getProject();
         IPath rootPath = ProjectUtils.findBelongedWorkspaceRoot(project.getLocation());
         if (rootPath == null) {

extension/jdtls.ext/com.microsoft.gradle.bs.importer/src/com/microsoft/java/builder/jdtbuilder/JavaBuilder.java

@@ -25,7 +25,9 @@ import org.eclipse.jdt.internal.compiler.util.SimpleLookupTable;
 import org.eclipse.jdt.internal.core.*;
 import org.eclipse.jdt.internal.core.util.Messages;
 import org.eclipse.jdt.internal.core.util.Util;
+import org.eclipse.jdt.ls.core.internal.JavaLanguageServerPlugin;
 
+import com.microsoft.gradle.bs.importer.Utils;
 import com.microsoft.java.builder.BuildStateManager;
 
 import java.io.*;
@@ -171,6 +173,10 @@ public static void writeState(Object state, DataOutputStream out) throws IOExcep
 
 @Override
 protected IProject[] build(int kind, Map ignored, IProgressMonitor monitor) throws CoreException {
+	org.eclipse.jdt.ls.core.internal.preferences.Preferences preferences = JavaLanguageServerPlugin.getPreferencesManager().getPreferences();
+	if (!Utils.isBuildServerEnabled(preferences)) {
+		return null;
+	}
 	this.currentProject = getProject();
 	if (this.currentProject == null || !this.currentProject.isAccessible()) return new IProject[0];