Auto module export with reentrant protection

Signed-off-by: JermaineHua <[email protected]>

Author: CrazyHZM

sofa-boot-project/sofa-boot/src/main/java/com/alipay/sofa/boot/util/ModuleUtil.java

@@ -30,15 +30,21 @@
  */
 public class ModuleUtil {
 
-    private static final Logger              LOGGER = SofaBootLoggerFactory
-                                                        .getLogger(ModuleUtil.class);
+    private static final Logger              LOGGER     = SofaBootLoggerFactory
+                                                            .getLogger(ModuleUtil.class);
 
     private static final MethodHandle        implAddOpensToAllUnnamed;
+
     private static final MethodHandle        implAddOpens;
+
     private static final MethodHandle        implAddExportsToAllUnnamed;
+
     private static final MethodHandle        implAddExports;
+
     private static final Map<String, Module> nameToModules;
 
+    private static boolean                   isExported = false;
+
     static {
         implAddOpensToAllUnnamed = createModuleMethodHandle("implAddOpensToAllUnnamed",
             String.class);
@@ -54,15 +60,17 @@ public class ModuleUtil {
      */
     public static void exportAllJDKModulePackageToAll() {
         try {
-            if (nameToModules != null) {
+            if (!isExported && nameToModules != null) {
                 nameToModules.forEach((name, module) -> module.getPackages().forEach(pkgName -> {
                     if (isJDKModulePackage(pkgName)) {
                         addOpensToAll(module, pkgName);
                         addExportsToAll(module, pkgName);
                     }
                 }));
             }
+            isExported = true;
         } catch (Throwable t) {
+            isExported = false;
             LOGGER.error("Failed to export all JDK module package to all", t);
         }
     }
@@ -76,14 +84,15 @@ private static boolean isJDKModulePackage(String modulePackageName) {
      */
     public static void exportAllModulePackageToAll() {
         try {
-            Map<String, Module> nameToModules = getNameToModule();
-            if (nameToModules != null) {
+            if (!isExported && nameToModules != null) {
                 nameToModules.forEach((name, module) -> module.getPackages().forEach(pkgName -> {
                     addOpensToAll(module, pkgName);
                     addExportsToAll(module, pkgName);
                 }));
             }
+            isExported = true;
         } catch (Throwable t) {
+            isExported = false;
             LOGGER.error("Failed to export all module package to all", t);
         }
     }