init

lee

2024-12-18 efdb99f8cecc4afb592afad79c761081d5d5cf22

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package com.xxl.job.core.executor.impl;
 
import com.xxl.job.core.executor.XxlJobExecutor;
import com.xxl.job.core.glue.GlueFactory;
import com.xxl.job.core.handler.annotation.XxlJob;
import com.xxl.job.core.handler.impl.MethodJobHandler;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.beans.BeansException;
import org.springframework.beans.factory.DisposableBean;
import org.springframework.beans.factory.SmartInitializingSingleton;
import org.springframework.context.ApplicationContext;
import org.springframework.context.ApplicationContextAware;
import org.springframework.core.MethodIntrospector;
import org.springframework.core.annotation.AnnotatedElementUtils;
 
import java.lang.reflect.Method;
import java.util.Map;
 
 
/**
 * xxl-job executor (for spring)
 *
 * @author xuxueli 2018-11-01 09:24:52
 */
public class XxlJobSpringExecutor extends XxlJobExecutor implements ApplicationContextAware, SmartInitializingSingleton, DisposableBean {
    private static final Logger logger = LoggerFactory.getLogger(XxlJobSpringExecutor.class);
 
 
    // start
    @Override
    public void afterSingletonsInstantiated() {
 
        // init JobHandler Repository
        /*initJobHandlerRepository(applicationContext);*/
 
        // init JobHandler Repository (for method)
        initJobHandlerMethodRepository(applicationContext);
 
        // refresh GlueFactory
        GlueFactory.refreshInstance(1);
 
        // super start
        try {
            super.start();
        } catch (Exception e) {
            throw new RuntimeException(e);
        }
    }
 
    // destroy
    @Override
    public void destroy() {
        super.destroy();
    }
 
 
    /*private void initJobHandlerRepository(ApplicationContext applicationContext) {
        if (applicationContext == null) {
            return;
        }
 
        // init job handler action
        Map<String, Object> serviceBeanMap = applicationContext.getBeansWithAnnotation(JobHandler.class);
 
        if (serviceBeanMap != null && serviceBeanMap.size() > 0) {
            for (Object serviceBean : serviceBeanMap.values()) {
                if (serviceBean instanceof IJobHandler) {
                    String name = serviceBean.getClass().getAnnotation(JobHandler.class).value();
                    IJobHandler handler = (IJobHandler) serviceBean;
                    if (loadJobHandler(name) != null) {
                        throw new RuntimeException("xxl-job jobhandler[" + name + "] naming conflicts.");
                    }
                    registJobHandler(name, handler);
                }
            }
        }
    }*/
 
    private void initJobHandlerMethodRepository(ApplicationContext applicationContext) {
        if (applicationContext == null) {
            return;
        }
        // init job handler from method
        String[] beanDefinitionNames = applicationContext.getBeanNamesForType(Object.class, false, true);
        for (String beanDefinitionName : beanDefinitionNames) {
            Object bean = applicationContext.getBean(beanDefinitionName);
 
            Map<Method, XxlJob> annotatedMethods = null;   // referred to ：org.springframework.context.event.EventListenerMethodProcessor.processBean
            try {
                annotatedMethods = MethodIntrospector.selectMethods(bean.getClass(),
                        new MethodIntrospector.MetadataLookup<XxlJob>() {
                            @Override
                            public XxlJob inspect(Method method) {
                                return AnnotatedElementUtils.findMergedAnnotation(method, XxlJob.class);
                            }
                        });
            } catch (Throwable ex) {
                logger.error("xxl-job method-jobhandler resolve error for bean[" + beanDefinitionName + "].", ex);
            }
            if (annotatedMethods==null || annotatedMethods.isEmpty()) {
                continue;
            }
 
            for (Map.Entry<Method, XxlJob> methodXxlJobEntry : annotatedMethods.entrySet()) {
                Method executeMethod = methodXxlJobEntry.getKey();
                XxlJob xxlJob = methodXxlJobEntry.getValue();
                // regist
                registJobHandler(xxlJob, bean, executeMethod);
            }
        }
    }
 
    // ---------------------- applicationContext ----------------------
    private static ApplicationContext applicationContext;
 
    @Override
    public void setApplicationContext(ApplicationContext applicationContext) throws BeansException {
        XxlJobSpringExecutor.applicationContext = applicationContext;
    }
 
    public static ApplicationContext getApplicationContext() {
        return applicationContext;
    }
 
}