1. import java.lang.reflect.Method;
  2. import java.util.HashMap;
  3. import java.util.Map;
  5. public class RuntimeWrapper {
  7. private final Map<String, Object> runtimeMap = new HashMap<>();
  9. /**
  10. * Registers a runtime environment value.
  11. * @param key The name of the runtime value.
  12. * @param value The value to register.
  13. */
  14. public void registerRuntimeValue(String key, Object value) {
  15. runtimeMap.put(key, value);
  16. }
  18. /**
  19. * Retrieves a runtime environment value.
  20. * @param key The name of the runtime value.
  21. * @return The value associated with the key, or null if not found.
  22. */
  23. public Object getRuntimeValue(String key) {
  24. return runtimeMap.get(key);
  25. }
  27. /**
  28. * Executes the given code within a controlled environment.
  29. * @param code The code to execute as a string.
  30. * @param args The arguments for the code.
  31. * @return The result of the code execution, or null if an error occurs.
  32. * @throws Exception if an unexpected error occurs during execution.
  33. */
  34. public Object execute(String code, Object[] args) throws Exception {
  35. try {
  36. // Create a new classloader for isolated execution.
  37. ClassLoader classLoader = getClass().getClassLoader(); // Use current classloader
  39. // Dynamically load the code.
  40. Class<?> clazz = classLoader.loadClass("TestClass", true, new ClassLoader.CustomClassLoader()); // CustomClassLoader to avoid dependency issues
  42. // Get the method to execute.
  43. Method method = clazz.getMethod("run", Object[].class);
  45. // Prepare arguments for the method.
  46. Object[] methodArgs = new Object[args.length];
  47. for (int i = 0; i < args.length; i++) {
  48. methodArgs[i] = args[i];
  49. }
  51. // Execute the method.
  52. return method.invoke(null, methodArgs);
  54. } catch (Exception e) {
  55. System.err.println("Error executing code: " + e.getMessage());
  56. throw e;
  57. }
  58. }
  60. // Custom ClassLoader to address class loading issues
  61. class CustomClassLoader extends ClassLoader {
  62. public CustomClassLoader(ClassLoader parent) {
  63. super(parent);
  64. }
  66. @Override
  67. public Class<?> loadClass(String name, boolean qualifiedName, ClassLoader parent) throws ClassNotFoundException {
  68. //This is a placeholder, you can implement custom classloading logic here.
  69. //For basic testing, it can simply return the original class.
  70. return super.loadClass(name, qualifiedName, parent);
  71. }
  72. }
  73. }

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