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https://gitee.com/mirrors/Spring-Cloud-Alibaba.git
synced 2021-06-26 13:25:11 +08:00
polish #761 update pkg name & maven coordinate for Greenwich
This commit is contained in:
fangjian0423
@@ -0,0 +1,87 @@
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/*
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* Licensed to the Apache Software Foundation (ASF) under one or more
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* contributor license agreements. See the NOTICE file distributed with
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* this work for additional information regarding copyright ownership.
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* The ASF licenses this file to You under the Apache License, Version 2.0
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* (the "License"); you may not use this file except in compliance with
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* the License. You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package com.alibaba.cloud.dubbo.openfeign;
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import org.apache.dubbo.rpc.service.GenericService;
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import com.alibaba.cloud.dubbo.metadata.RestMethodMetadata;
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import com.alibaba.cloud.dubbo.service.DubboGenericServiceExecutionContext;
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import com.alibaba.cloud.dubbo.service.DubboGenericServiceExecutionContextFactory;
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import org.springframework.util.ClassUtils;
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import java.lang.reflect.InvocationHandler;
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import java.lang.reflect.Method;
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import java.util.Map;
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import static org.apache.dubbo.common.utils.PojoUtils.realize;
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/**
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* Dubbo {@link GenericService} for {@link InvocationHandler}
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*
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* @author <a href="mailto:mercyblitz@gmail.com">Mercy</a>
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*/
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public class DubboInvocationHandler implements InvocationHandler {
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private final Map<Method, FeignMethodMetadata> feignMethodMetadataMap;
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private final InvocationHandler defaultInvocationHandler;
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private final DubboGenericServiceExecutionContextFactory contextFactory;
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private final ClassLoader classLoader;
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public DubboInvocationHandler(Map<Method, FeignMethodMetadata> feignMethodMetadataMap,
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InvocationHandler defaultInvocationHandler,
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ClassLoader classLoader,
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DubboGenericServiceExecutionContextFactory contextFactory) {
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this.feignMethodMetadataMap = feignMethodMetadataMap;
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this.defaultInvocationHandler = defaultInvocationHandler;
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this.classLoader = classLoader;
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this.contextFactory = contextFactory;
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}
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@Override
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public Object invoke(Object proxy, Method feignMethod, Object[] args) throws Throwable {
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FeignMethodMetadata feignMethodMetadata = feignMethodMetadataMap.get(feignMethod);
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if (feignMethodMetadata == null) {
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return defaultInvocationHandler.invoke(proxy, feignMethod, args);
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}
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GenericService dubboGenericService = feignMethodMetadata.getDubboGenericService();
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RestMethodMetadata dubboRestMethodMetadata = feignMethodMetadata.getDubboRestMethodMetadata();
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RestMethodMetadata feignRestMethodMetadata = feignMethodMetadata.getFeignMethodMetadata();
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DubboGenericServiceExecutionContext context = contextFactory.create(dubboRestMethodMetadata, feignRestMethodMetadata, args);
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String methodName = context.getMethodName();
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String[] parameterTypes = context.getParameterTypes();
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Object[] parameters = context.getParameters();
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Object result = dubboGenericService.$invoke(methodName, parameterTypes, parameters);
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Class<?> returnType = getReturnType(dubboRestMethodMetadata);
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return realize(result, returnType);
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}
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private Class<?> getReturnType(RestMethodMetadata dubboRestMethodMetadata) {
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String returnType = dubboRestMethodMetadata.getReturnType();
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return ClassUtils.resolveClassName(returnType, classLoader);
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}
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}
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@@ -0,0 +1,56 @@
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/*
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* Licensed to the Apache Software Foundation (ASF) under one or more
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* contributor license agreements. See the NOTICE file distributed with
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* this work for additional information regarding copyright ownership.
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* The ASF licenses this file to You under the Apache License, Version 2.0
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* (the "License"); you may not use this file except in compliance with
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* the License. You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package com.alibaba.cloud.dubbo.openfeign;
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import org.apache.dubbo.rpc.service.GenericService;
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import com.alibaba.cloud.dubbo.metadata.RestMethodMetadata;
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import java.lang.reflect.Method;
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/**
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* Feign {@link Method} Metadata
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*
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* @author <a href="mailto:mercyblitz@gmail.com">Mercy</a>
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*/
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class FeignMethodMetadata {
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private final GenericService dubboGenericService;
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private final RestMethodMetadata dubboRestMethodMetadata;
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private final RestMethodMetadata feignMethodMetadata;
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FeignMethodMetadata(GenericService dubboGenericService, RestMethodMetadata dubboRestMethodMetadata,
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RestMethodMetadata feignMethodMetadata) {
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this.dubboGenericService = dubboGenericService;
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this.dubboRestMethodMetadata = dubboRestMethodMetadata;
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this.feignMethodMetadata = feignMethodMetadata;
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}
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GenericService getDubboGenericService() {
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return dubboGenericService;
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}
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RestMethodMetadata getDubboRestMethodMetadata() {
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return dubboRestMethodMetadata;
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}
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RestMethodMetadata getFeignMethodMetadata() {
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return feignMethodMetadata;
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}
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}
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@@ -0,0 +1,85 @@
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/*
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* Licensed to the Apache Software Foundation (ASF) under one or more
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* contributor license agreements. See the NOTICE file distributed with
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* this work for additional information regarding copyright ownership.
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* The ASF licenses this file to You under the Apache License, Version 2.0
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* (the "License"); you may not use this file except in compliance with
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* the License. You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package com.alibaba.cloud.dubbo.openfeign;
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import com.alibaba.cloud.dubbo.service.DubboGenericServiceExecutionContextFactory;
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import com.alibaba.cloud.dubbo.service.DubboGenericServiceFactory;
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import org.springframework.beans.BeansException;
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import org.springframework.beans.factory.BeanClassLoaderAware;
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import org.springframework.beans.factory.config.BeanPostProcessor;
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import com.alibaba.cloud.dubbo.metadata.repository.DubboServiceMetadataRepository;
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import org.springframework.core.env.Environment;
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import static java.lang.reflect.Proxy.newProxyInstance;
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import static com.alibaba.cloud.dubbo.autoconfigure.DubboOpenFeignAutoConfiguration.TARGETER_CLASS_NAME;
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import static org.springframework.util.ClassUtils.getUserClass;
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import static org.springframework.util.ClassUtils.isPresent;
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import static org.springframework.util.ClassUtils.resolveClassName;
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/**
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* org.springframework.cloud.openfeign.Targeter {@link BeanPostProcessor}
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*
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* @author <a href="mailto:mercyblitz@gmail.com">Mercy</a>
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*/
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public class TargeterBeanPostProcessor implements BeanPostProcessor, BeanClassLoaderAware {
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private final Environment environment;
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private final DubboServiceMetadataRepository dubboServiceMetadataRepository;
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private final DubboGenericServiceFactory dubboGenericServiceFactory;
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private final DubboGenericServiceExecutionContextFactory contextFactory;
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private ClassLoader classLoader;
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public TargeterBeanPostProcessor(Environment environment,
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DubboServiceMetadataRepository dubboServiceMetadataRepository,
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DubboGenericServiceFactory dubboGenericServiceFactory,
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DubboGenericServiceExecutionContextFactory contextFactory) {
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this.environment = environment;
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this.dubboServiceMetadataRepository = dubboServiceMetadataRepository;
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this.dubboGenericServiceFactory = dubboGenericServiceFactory;
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this.contextFactory = contextFactory;
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}
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@Override
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public Object postProcessBeforeInitialization(Object bean, String beanName) throws BeansException {
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return bean;
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}
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@Override
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public Object postProcessAfterInitialization(final Object bean, String beanName) throws BeansException {
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if (isPresent(TARGETER_CLASS_NAME, classLoader)) {
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Class<?> beanClass = getUserClass(bean.getClass());
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Class<?> targetClass = resolveClassName(TARGETER_CLASS_NAME, classLoader);
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if (targetClass.isAssignableFrom(beanClass)) {
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return newProxyInstance(classLoader, new Class[]{targetClass},
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new TargeterInvocationHandler(bean, environment, classLoader, dubboServiceMetadataRepository,
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dubboGenericServiceFactory, contextFactory));
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}
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}
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return bean;
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}
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@Override
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public void setBeanClassLoader(ClassLoader classLoader) {
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this.classLoader = classLoader;
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}
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}
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@@ -0,0 +1,175 @@
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/*
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* Licensed to the Apache Software Foundation (ASF) under one or more
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* contributor license agreements. See the NOTICE file distributed with
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* this work for additional information regarding copyright ownership.
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* The ASF licenses this file to You under the Apache License, Version 2.0
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* (the "License"); you may not use this file except in compliance with
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* the License. You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package com.alibaba.cloud.dubbo.openfeign;
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import org.apache.dubbo.rpc.service.GenericService;
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import feign.Contract;
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import feign.Target;
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import org.slf4j.Logger;
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import org.slf4j.LoggerFactory;
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import com.alibaba.cloud.dubbo.annotation.DubboTransported;
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import com.alibaba.cloud.dubbo.metadata.DubboRestServiceMetadata;
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import com.alibaba.cloud.dubbo.metadata.DubboTransportedMethodMetadata;
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import com.alibaba.cloud.dubbo.metadata.MethodMetadata;
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import com.alibaba.cloud.dubbo.metadata.RequestMetadata;
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import com.alibaba.cloud.dubbo.metadata.RestMethodMetadata;
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import com.alibaba.cloud.dubbo.metadata.repository.DubboServiceMetadataRepository;
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import com.alibaba.cloud.dubbo.metadata.resolver.DubboTransportedMethodMetadataResolver;
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import com.alibaba.cloud.dubbo.service.DubboGenericServiceExecutionContextFactory;
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import com.alibaba.cloud.dubbo.service.DubboGenericServiceFactory;
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import org.springframework.cloud.openfeign.FeignContext;
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import org.springframework.core.env.Environment;
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import java.lang.reflect.InvocationHandler;
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import java.lang.reflect.Method;
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import java.lang.reflect.Proxy;
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import java.util.HashMap;
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import java.util.Map;
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import static java.lang.reflect.Proxy.newProxyInstance;
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/**
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* org.springframework.cloud.openfeign.Targeter {@link InvocationHandler}
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*
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* @author <a href="mailto:mercyblitz@gmail.com">Mercy</a>
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*/
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class TargeterInvocationHandler implements InvocationHandler {
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private final Logger logger = LoggerFactory.getLogger(getClass());
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private final Object bean;
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private final Environment environment;
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private final ClassLoader classLoader;
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private final DubboServiceMetadataRepository repository;
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private final DubboGenericServiceFactory dubboGenericServiceFactory;
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private final DubboGenericServiceExecutionContextFactory contextFactory;
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TargeterInvocationHandler(Object bean, Environment environment,
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ClassLoader classLoader,
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DubboServiceMetadataRepository repository,
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DubboGenericServiceFactory dubboGenericServiceFactory,
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DubboGenericServiceExecutionContextFactory contextFactory) {
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this.bean = bean;
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this.environment = environment;
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this.classLoader = classLoader;
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this.repository = repository;
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this.dubboGenericServiceFactory = dubboGenericServiceFactory;
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this.contextFactory = contextFactory;
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}
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@Override
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public Object invoke(Object proxy, Method method, Object[] args) throws Throwable {
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/**
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* args[0]: FeignClientFactoryBean factory
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* args[1]: Feign.Builder feign
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* args[2]: FeignContext context
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* args[3]: Target.HardCodedTarget<T> target
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*/
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FeignContext feignContext = cast(args[2]);
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Target.HardCodedTarget<?> target = cast(args[3]);
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// Execute Targeter#target method first
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method.setAccessible(true);
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// Get the default proxy object
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Object defaultProxy = method.invoke(bean, args);
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// Create Dubbo Proxy if required
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return createDubboProxyIfRequired(feignContext, target, defaultProxy);
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}
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private Object createDubboProxyIfRequired(FeignContext feignContext, Target target, Object defaultProxy) {
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DubboInvocationHandler dubboInvocationHandler = createDubboInvocationHandler(feignContext, target, defaultProxy);
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if (dubboInvocationHandler == null) {
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return defaultProxy;
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}
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return newProxyInstance(target.type().getClassLoader(), new Class<?>[]{target.type()}, dubboInvocationHandler);
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}
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private DubboInvocationHandler createDubboInvocationHandler(FeignContext feignContext, Target target,
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Object defaultFeignClientProxy) {
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// Service name equals @FeignClient.name()
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String serviceName = target.name();
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Class<?> targetType = target.type();
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// Get Contract Bean from FeignContext
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Contract contract = feignContext.getInstance(serviceName, Contract.class);
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DubboTransportedMethodMetadataResolver resolver =
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new DubboTransportedMethodMetadataResolver(environment, contract);
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Map<DubboTransportedMethodMetadata, RestMethodMetadata> feignRestMethodMetadataMap = resolver.resolve(targetType);
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if (feignRestMethodMetadataMap.isEmpty()) { // @DubboTransported method was not found from the Client interface
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if (logger.isDebugEnabled()) {
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logger.debug("@{} method was not found in the Feign target type[{}]",
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DubboTransported.class.getSimpleName(), targetType.getName());
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}
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return null;
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}
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// Update Metadata
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repository.initialize(serviceName);
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Map<Method, FeignMethodMetadata> feignMethodMetadataMap = getFeignMethodMetadataMap(serviceName, feignRestMethodMetadataMap);
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InvocationHandler defaultFeignClientInvocationHandler = Proxy.getInvocationHandler(defaultFeignClientProxy);
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DubboInvocationHandler dubboInvocationHandler = new DubboInvocationHandler(feignMethodMetadataMap,
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defaultFeignClientInvocationHandler, classLoader, contextFactory);
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return dubboInvocationHandler;
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}
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private Map<Method, FeignMethodMetadata> getFeignMethodMetadataMap(String serviceName,
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Map<DubboTransportedMethodMetadata, RestMethodMetadata>
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feignRestMethodMetadataMap) {
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Map<Method, FeignMethodMetadata> feignMethodMetadataMap = new HashMap<>();
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for (Map.Entry<DubboTransportedMethodMetadata, RestMethodMetadata> entry : feignRestMethodMetadataMap.entrySet()) {
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RestMethodMetadata feignRestMethodMetadata = entry.getValue();
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RequestMetadata feignRequestMetadata = feignRestMethodMetadata.getRequest();
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DubboRestServiceMetadata metadata = repository.get(serviceName, feignRequestMetadata);
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if (metadata != null) {
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DubboTransportedMethodMetadata dubboTransportedMethodMetadata = entry.getKey();
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Map<String, Object> dubboTranslatedAttributes = dubboTransportedMethodMetadata.getAttributes();
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Method method = dubboTransportedMethodMetadata.getMethod();
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GenericService dubboGenericService = dubboGenericServiceFactory.create(metadata, dubboTranslatedAttributes);
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RestMethodMetadata dubboRestMethodMetadata = metadata.getRestMethodMetadata();
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MethodMetadata methodMetadata = dubboTransportedMethodMetadata.getMethodMetadata();
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FeignMethodMetadata feignMethodMetadata = new FeignMethodMetadata(dubboGenericService,
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dubboRestMethodMetadata, feignRestMethodMetadata);
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feignMethodMetadataMap.put(method, feignMethodMetadata);
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}
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}
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return feignMethodMetadataMap;
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}
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private static <T> T cast(Object object) {
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return (T) object;
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}
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}
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