| 提交 | 用户 | age | ||
| de8c2b | 1 | package com.duxinglangzi.canal.starter.configuration; |
| D | 2 | |
| 3 | ||
| 4 | import com.duxinglangzi.canal.starter.annotation.CanalListener; | |
| 5 | import com.duxinglangzi.canal.starter.factory.TransponderContainerFactory; | |
| 6 | import org.slf4j.Logger; | |
| 7 | import org.slf4j.LoggerFactory; | |
| 8 | import org.springframework.aop.support.AopUtils; | |
| 9 | import org.springframework.beans.BeansException; | |
| 10 | import org.springframework.beans.factory.SmartInitializingSingleton; | |
| 11 | import org.springframework.beans.factory.config.BeanFactoryPostProcessor; | |
| 12 | import org.springframework.beans.factory.config.BeanPostProcessor; | |
| 13 | import org.springframework.beans.factory.config.ConfigurableListableBeanFactory; | |
| 14 | import org.springframework.core.MethodIntrospector; | |
| 15 | import org.springframework.core.annotation.AnnotatedElementUtils; | |
| 16 | ||
| 17 | import java.lang.reflect.Method; | |
| 18 | import java.util.Collections; | |
| 19 | import java.util.Map; | |
| 20 | import java.util.Set; | |
| 21 | import java.util.concurrent.ConcurrentHashMap; | |
| 22 | import java.util.stream.Collectors; | |
| 23 | ||
| 24 | /** | |
| 25 | * @author wuqiong 2022/4/11 | |
| 26 | */ | |
| 27 | public class CanalListenerAnnotationBeanPostProcessor implements | |
| 28 | BeanPostProcessor, SmartInitializingSingleton, BeanFactoryPostProcessor { | |
| 29 | ||
| 30 | private static final Logger logger = LoggerFactory.getLogger(CanalListenerAnnotationBeanPostProcessor.class); | |
| 31 | ||
| 32 | private final Set<Class<?>> notAnnotatedClasses = Collections.newSetFromMap(new ConcurrentHashMap<>(256)); | |
| 33 | private Set<CanalListenerEndpointRegistrar> registrars = Collections.newSetFromMap(new ConcurrentHashMap<>()); | |
| 34 | private ConfigurableListableBeanFactory configurableListableBeanFactory; | |
| 35 | private CanalAutoConfigurationProperties canalAutoConfigurationProperties; | |
| 36 | ||
| 37 | @Override | |
| 38 | public Object postProcessAfterInitialization(final Object bean, final String beanName) throws BeansException { | |
| 39 | if (notAnnotatedClasses.contains(bean.getClass())) return bean; | |
| 40 | Class<?> targetClass = AopUtils.getTargetClass(bean); | |
| 627420 | 41 | // 只扫描类的方法，目前 CanalListener 只支持在方法上 |
| de8c2b | 42 | Map<Method, CanalListener> annotatedMethods = MethodIntrospector.selectMethods(targetClass, |
| D | 43 | (MethodIntrospector.MetadataLookup<CanalListener>) method -> findListenerAnnotations(method)); |
| 44 | if (annotatedMethods.isEmpty()) { | |
| 45 | this.notAnnotatedClasses.add(bean.getClass()); | |
| 46 | } else { | |
| 627420 | 47 | // 先加入到待注册里面 |
| de8c2b | 48 | annotatedMethods.entrySet().stream() |
| D | 49 | .filter(e -> e != null) |
| 50 | .forEach(ele -> registrars.add(new CanalListenerEndpointRegistrar(bean, ele))); | |
| 627420 | 51 | logger.info("Registered @CanalListener methods processed on bean:{} , Methods :{} ", beanName, |
| de8c2b | 52 | annotatedMethods.keySet().stream().map(e -> e.getName()).collect(Collectors.toSet())); |
| D | 53 | } |
| 54 | return bean; | |
| 55 | } | |
| 56 | ||
| 57 | ||
| 58 | private CanalListener findListenerAnnotations(Method method) { | |
| 59 | return AnnotatedElementUtils.findMergedAnnotation(method, CanalListener.class); | |
| 60 | } | |
| 61 | ||
| 62 | ||
| 63 | @Override | |
| 64 | public void afterSingletonsInstantiated() { | |
| 65 | canalAutoConfigurationProperties = configurableListableBeanFactory.getBean(CanalAutoConfigurationProperties.class); | |
| 66 | TransponderContainerFactory.registerListenerContainer(configurableListableBeanFactory, canalAutoConfigurationProperties, registrars); | |
| 67 | } | |
| 68 | ||
| 69 | @Override | |
| 70 | public void postProcessBeanFactory(ConfigurableListableBeanFactory configurableListableBeanFactory) throws BeansException { | |
| 71 | this.configurableListableBeanFactory = configurableListableBeanFactory; | |
| 72 | } | |
| 73 | ||
| 74 | ||
| 75 | } | |
