Examples with CtMethod org.hotswap.agent.javassist.CtMethod used on opensource projects

Example 6 with CtMethod

use of org.hotswap.agent.javassist.CtMethod in project HotswapAgent by HotswapProjects.

the class HotswapWebObjectsPlugin method webObjectsIsStarting.

@OnClassLoadEvent(classNameRegexp = "com.webobjects.appserver.WOApplication")
public static void webObjectsIsStarting(CtClass ctClass) throws NotFoundException, CannotCompileException {
    CtMethod init = ctClass.getDeclaredMethod("run");
    init.insertBefore(PluginManagerInvoker.buildInitializePlugin(HotswapWebObjectsPlugin.class));
    LOGGER.debug("WOApplication.run() enhanced with plugin initialization.");
}

Example 7 with CtMethod

use of org.hotswap.agent.javassist.CtMethod in project HotswapAgent by HotswapProjects.

the class ProxyFactoryTransformer method patchProxyFactory.

/**
 * Patch ProxyFactory class.
 *   - add factory registration into constructor
 *   - changes call classLoader.loadClass(...) in getProxyClass() to ProxyClassLoadingDelegate.loadClass(classLoader, ...)
 *   - changes call ClassFileUtils.toClass() in createProxyClass() to ProxyClassLoadingDelegate.loadClass(...)
 *
 * @param ctClass the ProxyFactory class
 * @param classPool the class pool
 * @throws NotFoundException the not found exception
 * @throws CannotCompileException the cannot compile exception
 */
@OnClassLoadEvent(classNameRegexp = "org.jboss.weld.bean.proxy.ProxyFactory")
public static void patchProxyFactory(CtClass ctClass, ClassPool classPool) throws NotFoundException, CannotCompileException {
    CtClass[] constructorParams = new CtClass[] { classPool.get("java.lang.String"), classPool.get("java.lang.Class"), classPool.get("java.util.Set"), // classPool.get("java.lang.String"),
    classPool.get("javax.enterprise.inject.spi.Bean"), classPool.get("boolean") };
    CtConstructor declaredConstructor = ctClass.getDeclaredConstructor(constructorParams);
    // TODO : we should find constructor without this() call and put registration only into this one
    declaredConstructor.insertAfter("if (" + PluginManager.class.getName() + ".getInstance().isPluginInitialized(\"" + WeldPlugin.class.getName() + "\", this.classLoader)) {" + PluginManagerInvoker.buildCallPluginMethod("this.classLoader", WeldPlugin.class, "registerProxyFactory", "this", "java.lang.Object", "bean", "java.lang.Object", "this.classLoader", "java.lang.ClassLoader", "proxiedBeanType", "java.lang.Class") + "}");
    CtMethod getProxyClassMethod = ctClass.getDeclaredMethod("getProxyClass");
    getProxyClassMethod.instrument(new ExprEditor() {

        public void edit(MethodCall m) throws CannotCompileException {
            if (m.getClassName().equals(ClassLoader.class.getName()) && m.getMethodName().equals("loadClass"))
                m.replace("{ $_ = org.hotswap.agent.plugin.weld.command.ProxyClassLoadingDelegate.loadClass(this.classLoader,$1); }");
        }
    });
    CtMethod createProxyClassMethod = ctClass.getDeclaredMethod("createProxyClass");
    createProxyClassMethod.instrument(new ExprEditor() {

        public void edit(MethodCall m) throws CannotCompileException {
            if (m.getClassName().equals("org.jboss.weld.util.bytecode.ClassFileUtils") && m.getMethodName().equals("toClass"))
                m.replace("{ $_ = org.hotswap.agent.plugin.weld.command.ProxyClassLoadingDelegate.toClass($$); }");
        }
    });
}

Example 8 with CtMethod

use of org.hotswap.agent.javassist.CtMethod in project HotswapAgent by HotswapProjects.

the class DeltaSpikeProxyTransformer method instrumentTryToLoadClassForName.

private static void instrumentTryToLoadClassForName(CtClass ctClass, String methodName) throws CannotCompileException {
    try {
        CtMethod getProxyClassMethod = ctClass.getDeclaredMethod(methodName);
        getProxyClassMethod.instrument(new ExprEditor() {

            public void edit(MethodCall m) throws CannotCompileException {
                if (m.getClassName().equals("org.apache.deltaspike.core.util.ClassUtils") && m.getMethodName().equals("tryToLoadClassForName"))
                    m.replace("{ $_ = org.hotswap.agent.plugin.deltaspike.proxy.ProxyClassLoadingDelegate.tryToLoadClassForName($$); }");
            }
        });
    } catch (NotFoundException e) {
        LOGGER.debug("Method '{}' not found in '{}'.", methodName, ctClass.getName());
    }
}

Example 9 with CtMethod

use of org.hotswap.agent.javassist.CtMethod in project HotswapAgent by HotswapProjects.

the class DeltaSpikeProxyTransformer method patchAsmProxyClassGenerator.

/**
 * Delegates loadClass to org.hotswap.agent.plugin.deltaspike.proxy.ProxyClassLoadingDelegate::loadClass
 *
 * @param ctClass
 * @throws NotFoundException the not found exception
 * @throws CannotCompileException the cannot compile exception
 */
@OnClassLoadEvent(classNameRegexp = "org.apache.deltaspike.proxy.impl.AsmProxyClassGenerator")
public static void patchAsmProxyClassGenerator(CtClass ctClass) throws NotFoundException, CannotCompileException {
    CtMethod generateProxyClassMethod = ctClass.getDeclaredMethod("generateProxyClass");
    generateProxyClassMethod.instrument(new ExprEditor() {

        public void edit(MethodCall m) throws CannotCompileException {
            if (m.getClassName().equals("org.apache.deltaspike.proxy.impl.AsmProxyClassGenerator") && m.getMethodName().equals("loadClass"))
                m.replace("{ $_ = org.hotswap.agent.plugin.deltaspike.proxy.ProxyClassLoadingDelegate.loadClass($$); }");
        }
    });
}

Example 10 with CtMethod

use of org.hotswap.agent.javassist.CtMethod in project HotswapAgent by HotswapProjects.

the class PartialBeanTransformer method patchPartialBeanBindingExtension.

/**
 * Patch partial bean binding extension.
 *
 * @param ctClass
 * @throws NotFoundException the not found exception
 * @throws CannotCompileException the cannot compile exception
 */
@OnClassLoadEvent(classNameRegexp = "org.apache.deltaspike.partialbean.impl.PartialBeanBindingExtension")
public static void patchPartialBeanBindingExtension(CtClass ctClass) throws NotFoundException, CannotCompileException {
    CtMethod init = ctClass.getDeclaredMethod("init");
    init.insertAfter(PluginManagerInvoker.buildInitializePlugin(DeltaSpikePlugin.class));
    LOGGER.debug("org.apache.deltaspike.partialbean.impl.PartialBeanBindingExtension enhanced with plugin initialization.");
    CtMethod createPartialBeanMethod = ctClass.getDeclaredMethod("createPartialBean");
    createPartialBeanMethod.insertAfter("if (" + PluginManager.class.getName() + ".getInstance().isPluginInitialized(\"" + DeltaSpikePlugin.class.getName() + "\", beanClass.getClassLoader())) {" + PluginManagerInvoker.buildCallPluginMethod(DeltaSpikePlugin.class, "registerPartialBean", "$_", "java.lang.Object", "beanClass", "java.lang.Class") + "}" + "return $_;");
}