+++ /dev/null
-/*
- * Copyright (c) 2014 Cisco Systems, Inc. and others. All rights reserved.
- *
- * This program and the accompanying materials are made available under the
- * terms of the Eclipse Public License v1.0 which accompanies this distribution,
- * and is available at http://www.eclipse.org/legal/epl-v10.html
- */
-package org.opendaylight.controller.sal.binding.codegen.impl;
-
-import com.google.common.base.Supplier;
-import com.google.common.collect.Iterables;
-import java.util.Map;
-import java.util.WeakHashMap;
-import javassist.ClassPool;
-import javassist.CtClass;
-import javassist.CtMethod;
-import javassist.NotFoundException;
-import javax.annotation.concurrent.GuardedBy;
-import org.opendaylight.controller.sal.binding.api.rpc.RpcRouter;
-import org.opendaylight.controller.sal.binding.codegen.RpcIsNotRoutedException;
-import org.opendaylight.controller.sal.binding.spi.NotificationInvokerFactory;
-import org.opendaylight.yangtools.sal.binding.generator.util.JavassistUtils;
-import org.opendaylight.yangtools.util.ClassLoaderUtils;
-import org.opendaylight.yangtools.yang.binding.BindingMapping;
-import org.opendaylight.yangtools.yang.binding.InstanceIdentifier;
-import org.opendaylight.yangtools.yang.binding.NotificationListener;
-import org.opendaylight.yangtools.yang.binding.RpcService;
-import org.opendaylight.yangtools.yang.binding.annotations.RoutingContext;
-
-abstract class AbstractRuntimeCodeGenerator implements org.opendaylight.controller.sal.binding.codegen.RuntimeCodeGenerator, NotificationInvokerFactory {
- @GuardedBy("this")
- private final Map<Class<? extends NotificationListener>, RuntimeGeneratedInvokerPrototype> invokerClasses = new WeakHashMap<>();
- private final CtClass brokerNotificationListener;
- protected final JavassistUtils utils;
-
- protected AbstractRuntimeCodeGenerator(final ClassPool pool) {
- utils = JavassistUtils.forClassPool(pool);
-
- /*
- * Make sure Javassist ClassPool sees the classloader of RpcService
- */
- utils.ensureClassLoader(RpcService.class);
-
- brokerNotificationListener = utils.asCtClass(org.opendaylight.controller.sal.binding.api.NotificationListener.class);
- }
-
- protected final CtClass getBrokerNotificationListener() {
- return brokerNotificationListener;
- }
-
- protected abstract RuntimeGeneratedInvokerPrototype generateListenerInvoker(Class<? extends NotificationListener> cls);
- protected abstract <T extends RpcService> Supplier<T> directProxySupplier(final Class<T> serviceType);
- protected abstract <T extends RpcService> Supplier<T> routerSupplier(final Class<T> serviceType, RpcServiceMetadata metadata);
-
- private RpcServiceMetadata getRpcMetadata(final CtClass iface) throws ClassNotFoundException, NotFoundException, RpcIsNotRoutedException {
- final RpcServiceMetadata metadata = new RpcServiceMetadata();
-
- for (CtMethod method : iface.getMethods()) {
- if (isRpcMethodWithInput(iface, method)) {
- final RpcMetadata routingPair = getRpcMetadata(method);
- if (routingPair != null) {
- metadata.addContext(routingPair.getContext());
- metadata.addRpcMethod(method.getName(), routingPair);
-
- /*
- * Force-load the RPC class representing the "input" of this RPC.
- *
- * FIXME: this is pre-existing side-effect of the original code, which
- * kept a reference to the loaded class, but it did not use it.
- *
- * There was no explanation as to why forcing this load was
- * necessary. As far as I can tell now is that it forces the
- * resolution of method arguments, which would (according to
- * my reading of JLS) occur only when the method is invoked via
- * binding-aware class action, not when coming from
- * binding-independent world. Whether that makes sense or not,
- * remains to be investigated.
- */
- Thread.currentThread().getContextClassLoader().loadClass(routingPair.getInputType().getName());
- } else {
- throw new RpcIsNotRoutedException(String.format("RPC %s from %s is not routed", method.getName(), iface.getName()));
- }
- }
- }
-
- return metadata;
- }
-
-
- private boolean isRpcMethodWithInput(final CtClass iface, final CtMethod method) throws NotFoundException {
- if(iface.equals(method.getDeclaringClass())
- && method.getParameterTypes().length == 1) {
- final CtClass onlyArg = method.getParameterTypes()[0];
- if(onlyArg.isInterface() && onlyArg.getName().endsWith(BindingMapping.RPC_INPUT_SUFFIX)) {
- return true;
- }
- }
- return false;
- }
-
- private RpcMetadata getRpcMetadata(final CtMethod method) throws NotFoundException {
- final CtClass inputClass = method.getParameterTypes()[0];
- return rpcMethodMetadata(inputClass, inputClass, method.getName());
- }
-
- private RpcMetadata rpcMethodMetadata(final CtClass dataClass, final CtClass inputClass, final String rpcMethod) throws NotFoundException {
- for (CtMethod method : dataClass.getMethods()) {
- if (method.getName().startsWith("get") && method.getParameterTypes().length == 0) {
- for (Object annotation : method.getAvailableAnnotations()) {
- if (annotation instanceof RoutingContext) {
- boolean encapsulated = !method.getReturnType().equals(utils.asCtClass(InstanceIdentifier.class));
- return new RpcMetadata(rpcMethod, ((RoutingContext)annotation).value(), method, encapsulated, inputClass);
- }
- }
- }
- }
-
- for (CtClass iface : dataClass.getInterfaces()) {
- final RpcMetadata ret = rpcMethodMetadata(iface, inputClass, rpcMethod);
- if(ret != null) {
- return ret;
- }
- }
- return null;
- }
-
- private synchronized RuntimeGeneratedInvokerPrototype resolveInvokerClass(final Class<? extends NotificationListener> cls) {
- RuntimeGeneratedInvokerPrototype invoker = invokerClasses.get(cls);
- if (invoker != null) {
- return invoker;
- }
-
- synchronized (utils) {
- invoker = ClassLoaderUtils.withClassLoader(cls.getClassLoader(), new Supplier<RuntimeGeneratedInvokerPrototype>() {
- @Override
- public RuntimeGeneratedInvokerPrototype get() {
- return generateListenerInvoker(cls);
- }
- });
- }
-
- invokerClasses.put(cls, invoker);
- return invoker;
- }
-
- @Override
- public final NotificationInvokerFactory getInvokerFactory() {
- return this;
- }
-
- @Override
- public final <T extends RpcService> T getDirectProxyFor(final Class<T> serviceType) {
- synchronized (utils) {
- return ClassLoaderUtils.withClassLoader(serviceType.getClassLoader(), directProxySupplier(serviceType));
- }
- }
-
- @Override
- public final <T extends RpcService> RpcRouter<T> getRouterFor(final Class<T> serviceType, final String name) throws RpcIsNotRoutedException {
- final RpcServiceMetadata metadata = ClassLoaderUtils.withClassLoader(serviceType.getClassLoader(), new Supplier<RpcServiceMetadata>() {
- @Override
- public RpcServiceMetadata get() {
- try {
- return getRpcMetadata(utils.asCtClass(serviceType));
- } catch (ClassNotFoundException | NotFoundException e) {
- throw new IllegalStateException(String.format("Failed to load metadata for class %s", serviceType), e);
- }
- }
- });
-
- if (Iterables.isEmpty(metadata.getContexts())) {
- throw new RpcIsNotRoutedException("Service doesn't have routing context associated.");
- }
-
- synchronized (utils) {
- final T instance = ClassLoaderUtils.withClassLoader(serviceType.getClassLoader(), routerSupplier(serviceType, metadata));
- return new RpcRouterCodegenInstance<T>(name, serviceType, instance, metadata.getContexts());
- }
- }
-
- @Override
- public NotificationInvoker invokerFor(final NotificationListener instance) {
- final Class<? extends NotificationListener> cls = instance.getClass();
- final RuntimeGeneratedInvokerPrototype prototype = resolveInvokerClass(cls);
-
- try {
- return RuntimeGeneratedInvoker.create(instance, prototype);
- } catch (InstantiationException | IllegalAccessException e) {
- throw new IllegalStateException(String.format("Failed to create invoker for %s", instance), e);
- }
- }
-}
Code Review / controller.git / blobdiff