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duxinglangzi

2022-04-22 de8c2b2a4654893dc2c80f1fe095c165485bee5f

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package com.duxinglangzi.canal.starter.factory; 
 
import com.alibaba.otter.canal.client.CanalConnector; 
import com.duxinglangzi.canal.starter.configuration.CanalAutoConfigurationProperties; 
import com.duxinglangzi.canal.starter.configuration.CanalListenerEndpointRegistrar; 
import com.duxinglangzi.canal.starter.container.DmlMessageTransponderContainer; 
import org.springframework.beans.factory.config.ConfigurableListableBeanFactory; 
 
import java.util.ArrayList; 
import java.util.List; 
import java.util.Map; 
import java.util.Set; 
 
/** 
 * @author wuqiong 2022/4/18 
 * @description 
 */ 
public class TransponderContainerFactory { 
 
    private static final String CONTAINER_ID_PREFIX = "com.duxinglangzi.canal.starter.container.MessageTransponderContainer#"; 
 
 
    public static void registerListenerContainer( 
            ConfigurableListableBeanFactory beanFactory, CanalAutoConfigurationProperties canalConfig, 
            Set<CanalListenerEndpointRegistrar> registrars) { 
        if (registrars == null || registrars.isEmpty()) return; 
        if (canalConfig == null || canalConfig.getInstances().isEmpty()) return; 
 
        for (Map.Entry<String, CanalAutoConfigurationProperties.EndpointInstance> endpointInstance : canalConfig.getInstances().entrySet()) { 
            if (beanFactory.containsBean(getContainerID(endpointInstance.getKey()))) continue; // 如果已经存在则不在创建 
            List<CanalListenerEndpointRegistrar> registrarList = new ArrayList<>(); 
            for (CanalListenerEndpointRegistrar registrar : registrars) { 
                if (!registrar.isContainDestination(endpointInstance.getKey())) continue; 
                registrar.checkParameter(canalConfig.getInstances().keySet()); 
                registrarList.add(registrar); 
            } 
            if (registrarList.isEmpty()) continue; 
            registerTransponderContainer( 
                    endpointInstance.getKey(), endpointInstance.getValue(), beanFactory, registrarList); 
        } 
 
    } 
 
    private static void registerTransponderContainer( 
            String destination, CanalAutoConfigurationProperties.EndpointInstance endpointInstance, 
            ConfigurableListableBeanFactory beanFactory, List<CanalListenerEndpointRegistrar> registrarList) { 
        CanalConnector connector = CanalConnectorFactory.createConnector(destination, endpointInstance); 
        beanFactory.registerSingleton(getContainerID(destination), 
                new DmlMessageTransponderContainer(connector, registrarList, endpointInstance)); 
    } 
 
 
    private static String getContainerID(String destination) { 
        return CONTAINER_ID_PREFIX + "#" + destination; 
    } 
 
 
}