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package org.glassfish.jersey.gf.ejb.internal;
import java.lang.annotation.Annotation;
import java.lang.reflect.InvocationHandler;
import java.lang.reflect.InvocationTargetException;
import java.lang.reflect.Method;
import java.security.AccessController;
import java.security.PrivilegedActionException;
import java.security.PrivilegedExceptionAction;
import java.util.Arrays;
import java.util.Collection;
import java.util.Collections;
import java.util.HashSet;
import java.util.Iterator;
import java.util.LinkedList;
import java.util.List;
import java.util.Set;
import java.util.TreeSet;
import java.util.concurrent.CopyOnWriteArrayList;
import java.util.function.Supplier;
import java.util.logging.Level;
import java.util.logging.Logger;
import javax.ws.rs.ext.ExceptionMapper;
import javax.annotation.Priority;
import javax.ejb.Local;
import javax.ejb.Remote;
import javax.inject.Singleton;
import javax.naming.InitialContext;
import javax.naming.NamingException;
import org.glassfish.jersey.internal.inject.AbstractBinder;
import org.glassfish.jersey.internal.inject.Binding;
import org.glassfish.jersey.internal.inject.Bindings;
import org.glassfish.jersey.internal.inject.InjectionManager;
import org.glassfish.jersey.internal.inject.InstanceBinding;
import org.glassfish.jersey.server.ApplicationHandler;
import org.glassfish.jersey.server.model.Invocable;
import org.glassfish.jersey.server.spi.ComponentProvider;
import org.glassfish.jersey.server.spi.internal.ResourceMethodInvocationHandlerProvider;
import org.glassfish.ejb.deployment.descriptor.EjbBundleDescriptorImpl;
import org.glassfish.ejb.deployment.descriptor.EjbDescriptor;
import org.glassfish.internal.data.ApplicationInfo;
import org.glassfish.internal.data.ApplicationRegistry;
import org.glassfish.internal.data.ModuleInfo;
import com.sun.ejb.containers.BaseContainer;
import com.sun.ejb.containers.EjbContainerUtil;
import com.sun.ejb.containers.EjbContainerUtilImpl;
import com.sun.enterprise.config.serverbeans.Application;
import com.sun.enterprise.config.serverbeans.Applications;
/**
* EJB component provider.
*
* @author Paul Sandoz
* @author Jakub Podlesak (jakub.podlesak at oracle.com)
*/
@Priority(300)
@SuppressWarnings("UnusedDeclaration")
public final class EjbComponentProvider implements ComponentProvider, ResourceMethodInvocationHandlerProvider {
private static final Logger LOGGER = Logger.getLogger(EjbComponentProvider.class.getName());
private InitialContext initialContext;
private final List<String> libNames = new CopyOnWriteArrayList<>();
private boolean ejbInterceptorRegistered = false;
/**
* HK2 factory to provide EJB components obtained via JNDI lookup.
*/
private static class EjbFactory<T> implements Supplier<T> {
final InitialContext ctx;
final Class<T> clazz;
final EjbComponentProvider ejbProvider;
@SuppressWarnings("unchecked")
@Override
public T get() {
try {
return (T) lookup(ctx, clazz, clazz.getSimpleName(), ejbProvider);
} catch (NamingException ex) {
Logger.getLogger(ApplicationHandler.class.getName()).log(Level.SEVERE, null, ex);
return null;
}
}
public EjbFactory(Class<T> rawType, InitialContext ctx, EjbComponentProvider ejbProvider) {
this.clazz = rawType;
this.ctx = ctx;
this.ejbProvider = ejbProvider;
}
}
/**
* Annotations to determine EJB components.
*/
private static final Set<String> EjbComponentAnnotations = Collections.unmodifiableSet(new HashSet<String>() {{
add("javax.ejb.Stateful");
add("javax.ejb.Stateless");
add("javax.ejb.Singleton");
}});
private InjectionManager injectionManager = null;
// ComponentProvider
@Override
public void initialize(final InjectionManager injectionManager) {
this.injectionManager = injectionManager;
InstanceBinding<EjbComponentProvider> descriptor = Bindings.service(EjbComponentProvider.this)
.to(ResourceMethodInvocationHandlerProvider.class);
this.injectionManager.register(descriptor);
}
private ApplicationInfo getApplicationInfo(EjbContainerUtil ejbUtil) throws NamingException {
ApplicationRegistry appRegistry = ejbUtil.getServices().getService(ApplicationRegistry.class);
Applications applications = ejbUtil.getServices().getService(Applications.class);
String appNamePrefix = (String) initialContext.lookup("java:app/AppName");
Set<String> appNames = appRegistry.getAllApplicationNames();
Set<String> disabledApps = new TreeSet<>();
for (String appName : appNames) {
if (appName.startsWith(appNamePrefix)) {
Application appDesc = applications.getApplication(appName);
if (appDesc != null && !ejbUtil.getDeployment().isAppEnabled(appDesc)) {
// skip disabled version of the app
disabledApps.add(appName);
} else {
return ejbUtil.getDeployment().get(appName);
}
}
}
// grab the latest one, there is no way to make
// sure which one the user is actually enabling,
// so use the best case, i.e. upgrade
Iterator<String> it = disabledApps.iterator();
String lastDisabledApp = null;
while (it.hasNext()) {
lastDisabledApp = it.next();
}
if (lastDisabledApp != null) {
return ejbUtil.getDeployment().get(lastDisabledApp);
}
throw new NamingException("Application Information Not Found");
}
private void registerEjbInterceptor() {
try {
final Object interceptor = new EjbComponentInterceptor(injectionManager);
initialContext = getInitialContext();
final EjbContainerUtil ejbUtil = EjbContainerUtilImpl.getInstance();
final ApplicationInfo appInfo = getApplicationInfo(ejbUtil);
final List<String> tempLibNames = new LinkedList<>();
for (ModuleInfo moduleInfo : appInfo.getModuleInfos()) {
final String jarName = moduleInfo.getName();
if (jarName.endsWith(".jar") || jarName.endsWith(".war")) {
final String moduleName = jarName.substring(0, jarName.length() - 4);
tempLibNames.add(moduleName);
final Object bundleDescriptor = moduleInfo.getMetaData(EjbBundleDescriptorImpl.class.getName());
if (bundleDescriptor instanceof EjbBundleDescriptorImpl) {
final Collection<EjbDescriptor> ejbs = ((EjbBundleDescriptorImpl) bundleDescriptor).getEjbs();
for (final EjbDescriptor ejb : ejbs) {
final BaseContainer ejbContainer = EjbContainerUtilImpl.getInstance().getContainer(ejb.getUniqueId());
try {
AccessController.doPrivileged(new PrivilegedExceptionAction() {
@Override
public Object run() throws Exception {
final Method registerInterceptorMethod =
BaseContainer.class
.getDeclaredMethod("registerSystemInterceptor", java.lang.Object.class);
registerInterceptorMethod.setAccessible(true);
registerInterceptorMethod.invoke(ejbContainer, interceptor);
return null;
}
});
} catch (PrivilegedActionException pae) {
final Throwable cause = pae.getCause();
LOGGER.log(Level.WARNING,
LocalizationMessages.EJB_INTERCEPTOR_BINDING_WARNING(ejb.getEjbClassName()), cause);
}
}
}
}
}
libNames.addAll(tempLibNames);
final Object interceptorBinder = initialContext.lookup("java:org.glassfish.ejb.container.interceptor_binding_spi");
// Some implementations of InitialContext return null instead of
// throwing NamingException if there is no Object associated with
// the name
if (interceptorBinder == null) {
throw new IllegalStateException(LocalizationMessages.EJB_INTERCEPTOR_BIND_API_NOT_AVAILABLE());
}
try {
AccessController.doPrivileged(new PrivilegedExceptionAction() {
@Override
public Object run() throws Exception {
Method interceptorBinderMethod = interceptorBinder.getClass()
.getMethod("registerInterceptor", java.lang.Object.class);
interceptorBinderMethod.invoke(interceptorBinder, interceptor);
EjbComponentProvider.this.ejbInterceptorRegistered = true;
LOGGER.log(Level.CONFIG, LocalizationMessages.EJB_INTERCEPTOR_BOUND());
return null;
}
});
} catch (PrivilegedActionException pae) {
throw new IllegalStateException(LocalizationMessages.EJB_INTERCEPTOR_CONFIG_ERROR(), pae.getCause());
}
} catch (NamingException ex) {
throw new IllegalStateException(LocalizationMessages.EJB_INTERCEPTOR_BIND_API_NOT_AVAILABLE(), ex);
} catch (LinkageError ex) {
throw new IllegalStateException(LocalizationMessages.EJB_INTERCEPTOR_CONFIG_LINKAGE_ERROR(), ex);
}
}
// ComponentProvider
@SuppressWarnings("unchecked")
@Override
public boolean bind(Class<?> component, Set<Class<?>> providerContracts) {
if (LOGGER.isLoggable(Level.FINE)) {
LOGGER.fine(LocalizationMessages.EJB_CLASS_BEING_CHECKED(component));
}
if (injectionManager == null) {
throw new IllegalStateException(LocalizationMessages.EJB_COMPONENT_PROVIDER_NOT_INITIALIZED_PROPERLY());
}
if (!isEjbComponent(component)) {
return false;
}
if (!ejbInterceptorRegistered) {
registerEjbInterceptor();
}
Binding binding = Bindings.supplier(new EjbFactory(component, initialContext, EjbComponentProvider.this))
.to(component)
.to(providerContracts);
injectionManager.register(binding);
if (LOGGER.isLoggable(Level.CONFIG)) {
LOGGER.config(LocalizationMessages.EJB_CLASS_BOUND_WITH_CDI(component));
}
return true;
}
@Override
public void done() {
registerEjbExceptionMapper();
}
private void registerEjbExceptionMapper() {
injectionManager.register(new AbstractBinder() {
@Override
protected void configure() {
bind(EjbExceptionMapper.class).to(ExceptionMapper.class).in(Singleton.class);
}
});
}
private boolean isEjbComponent(Class<?> component) {
for (Annotation a : component.getAnnotations()) {
if (EjbComponentAnnotations.contains(a.annotationType().getName())) {
return true;
}
}
return false;
}
@Override
public InvocationHandler create(Invocable method) {
final Class<?> resourceClass = method.getHandler().getHandlerClass();
if (resourceClass == null || !isEjbComponent(resourceClass)) {
return null;
}
final Method handlingMethod = method.getDefinitionMethod();
for (Class iFace : remoteAndLocalIfaces(resourceClass)) {
try {
final Method iFaceMethod = iFace.getDeclaredMethod(handlingMethod.getName(), handlingMethod.getParameterTypes());
if (iFaceMethod != null) {
return new InvocationHandler() {
@Override
public Object invoke(Object target, Method ignored, Object[] args)
throws IllegalAccessException, IllegalArgumentException, InvocationTargetException {
return iFaceMethod.invoke(target, args);
}
};
}
} catch (NoSuchMethodException | SecurityException ex) {
logLookupException(handlingMethod, resourceClass, iFace, ex);
}
}
return null;
}
private void logLookupException(final Method method, final Class<?> component, Class<?> iFace, Exception ex) {
LOGGER.log(
Level.WARNING,
LocalizationMessages.EJB_INTERFACE_HANDLING_METHOD_LOOKUP_EXCEPTION(method, component, iFace), ex);
}
private List<Class> remoteAndLocalIfaces(final Class<?> resourceClass) {
final List<Class> allLocalOrRemoteIfaces = new LinkedList<>();
if (resourceClass.isAnnotationPresent(Remote.class)) {
allLocalOrRemoteIfaces.addAll(Arrays.asList(resourceClass.getAnnotation(Remote.class).value()));
}
if (resourceClass.isAnnotationPresent(Local.class)) {
allLocalOrRemoteIfaces.addAll(Arrays.asList(resourceClass.getAnnotation(Local.class).value()));
}
for (Class<?> i : resourceClass.getInterfaces()) {
if (i.isAnnotationPresent(Remote.class) || i.isAnnotationPresent(Local.class)) {
allLocalOrRemoteIfaces.add(i);
}
}
return allLocalOrRemoteIfaces;
}
private static InitialContext getInitialContext() {
try {
// Deployment on Google App Engine will
// result in a LinkageError
return new InitialContext();
} catch (Exception ex) {
throw new IllegalStateException(LocalizationMessages.INITIAL_CONTEXT_NOT_AVAILABLE(), ex);
}
}
private static Object lookup(InitialContext ic, Class<?> c, String name, EjbComponentProvider provider)
throws NamingException {
try {
return lookupSimpleForm(ic, name, provider);
} catch (NamingException ex) {
LOGGER.log(Level.WARNING, LocalizationMessages.EJB_CLASS_SIMPLE_LOOKUP_FAILED(c.getName()), ex);
return lookupFullyQualifiedForm(ic, c, name, provider);
}
}
private static Object lookupSimpleForm(InitialContext ic, String name, EjbComponentProvider provider) throws NamingException {
if (provider.libNames.isEmpty()) {
String jndiName = "java:module/" + name;
return ic.lookup(jndiName);
} else {
NamingException ne = null;
for (String moduleName : provider.libNames) {
String jndiName = "java:app/" + moduleName + "/" + name;
Object result;
try {
result = ic.lookup(jndiName);
if (result != null) {
return result;
}
} catch (NamingException e) {
ne = e;
}
}
throw (ne != null) ? ne : new NamingException();
}
}
private static Object lookupFullyQualifiedForm(InitialContext ic, Class<?> c, String name, EjbComponentProvider provider)
throws NamingException {
if (provider.libNames.isEmpty()) {
String jndiName = "java:module/" + name + "!" + c.getName();
return ic.lookup(jndiName);
} else {
NamingException ne = null;
for (String moduleName : provider.libNames) {
String jndiName = "java:app/" + moduleName + "/" + name + "!" + c.getName();
Object result;
try {
result = ic.lookup(jndiName);
if (result != null) {
return result;
}
} catch (NamingException e) {
ne = e;
}
}
throw (ne != null) ? ne : new NamingException();
}
}
}