环境信息
canal version 1.1.5-SNAPSHOT mysql version 8.0.22
问题描述
本地拉取master分支代码进行调试client-adapter的时候。或者是手动打包es7的plugin放到1.1.5-SNAPSHOT的canal-adapter的plugin下面,替换之前的es7x的插件包的时候。都会出现如下日志:
2020-11-03 19:22:17.384 [main] ERROR c.a.o.canal.adapter.launcher.loader.CanalAdapterLoader - Load canal adapter: es7 failed java.lang.RuntimeException: java.lang.RuntimeException: java.lang.ClassCastException: com.alibaba.druid.pool.DruidDataSource cannot be cast to com.alibaba.druid.pool.DruidDataSource at com.alibaba.otter.canal.client.adapter.es7x.ES7xAdapter.init(ES7xAdapter.java:54) ~[client-adapter.es7x-1.1.5-SNAPSHOT-jar-with-dependencies.jar:na] at com.alibaba.otter.canal.adapter.launcher.loader.CanalAdapterLoader.loadAdapter(CanalAdapterLoader.java:225) [classes/:na] at com.alibaba.otter.canal.adapter.launcher.loader.CanalAdapterLoader.init(CanalAdapterLoader.java:56) [classes/:na] at com.alibaba.otter.canal.adapter.launcher.loader.CanalAdapterService.init(CanalAdapterService.java:60) [classes/:na] at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[na:1.8.0_231] at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) ~[na:1.8.0_231] at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[na:1.8.0_231] at java.lang.reflect.Method.invoke(Method.java:498) ~[na:1.8.0_231] at org.springframework.beans.factory.annotation.InitDestroyAnnotationBeanPostProcessor$LifecycleElement.invoke(InitDestroyAnnotationBeanPostProcessor.java:365) [spring-beans-5.0.5.RELEASE.jar:5.0.5.RELEASE] at org.springframework.beans.factory.annotation.InitDestroyAnnotationBeanPostProcessor$LifecycleMetadata.invokeInitMethods(InitDestroyAnnotationBeanPostProcessor.java:308) [spring-beans-5.0.5.RELEASE.jar:5.0.5.RELEASE] at org.springframework.beans.factory.annotation.InitDestroyAnnotationBeanPostProcessor.postProcessBeforeInitialization(InitDestroyAnnotationBeanPostProcessor.java:135) [spring-beans-5.0.5.RELEASE.jar:5.0.5.RELEASE] at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.applyBeanPostProcessorsBeforeInitialization(AbstractAutowireCapableBeanFactory.java:422) [spring-beans-5.0.5.RELEASE.jar:5.0.5.RELEASE] at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.java:1694) [spring-beans-5.0.5.RELEASE.jar:5.0.5.RELEASE] at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:579) [spring-beans-5.0.5.RELEASE.jar:5.0.5.RELEASE] at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:501) [spring-beans-5.0.5.RELEASE.jar:5.0.5.RELEASE] at org.springframework.beans.factory.support.AbstractBeanFactory.lambda$doGetBean$1(AbstractBeanFactory.java:353) [spring-beans-5.0.5.RELEASE.jar:5.0.5.RELEASE] at org.springframework.cloud.context.scope.GenericScope$BeanLifecycleWrapper.getBean(GenericScope.java:390) ~[spring-cloud-context-2.0.0.RELEASE.jar:2.0.0.RELEASE] at org.springframework.cloud.context.scope.GenericScope.get(GenericScope.java:184) ~[spring-cloud-context-2.0.0.RELEASE.jar:2.0.0.RELEASE] at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:350) [spring-beans-5.0.5.RELEASE.jar:5.0.5.RELEASE] at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:199) [spring-beans-5.0.5.RELEASE.jar:5.0.5.RELEASE] at org.springframework.context.support.AbstractApplicationContext.getBean(AbstractApplicationContext.java:1089) ~[spring-context-5.0.5.RELEASE.jar:5.0.5.RELEASE] at org.springframework.cloud.context.scope.refresh.RefreshScope.eagerlyInitialize(RefreshScope.java:126) ~[spring-cloud-context-2.0.0.RELEASE.jar:2.0.0.RELEASE] at org.springframework.cloud.context.scope.refresh.RefreshScope.start(RefreshScope.java:117) ~[spring-cloud-context-2.0.0.RELEASE.jar:2.0.0.RELEASE] at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[na:1.8.0_231] at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) ~[na:1.8.0_231] at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[na:1.8.0_231] at java.lang.reflect.Method.invoke(Method.java:498) ~[na:1.8.0_231] at org.springframework.context.event.ApplicationListenerMethodAdapter.doInvoke(ApplicationListenerMethodAdapter.java:264) ~[spring-context-5.0.5.RELEASE.jar:5.0.5.RELEASE] at org.springframework.context.event.ApplicationListenerMethodAdapter.processEvent(ApplicationListenerMethodAdapter.java:182) ~[spring-context-5.0.5.RELEASE.jar:5.0.5.RELEASE] at org.springframework.context.event.ApplicationListenerMethodAdapter.onApplicationEvent(ApplicationListenerMethodAdapter.java:144) ~[spring-context-5.0.5.RELEASE.jar:5.0.5.RELEASE] at org.springframework.context.event.SimpleApplicationEventMulticaster.doInvokeListener(SimpleApplicationEventMulticaster.java:172) ~[spring-context-5.0.5.RELEASE.jar:5.0.5.RELEASE] at org.springframework.context.event.SimpleApplicationEventMulticaster.invokeListener(SimpleApplicationEventMulticaster.java:165) ~[spring-context-5.0.5.RELEASE.jar:5.0.5.RELEASE] at org.springframework.context.event.SimpleApplicationEventMulticaster.multicastEvent(SimpleApplicationEventMulticaster.java:139) ~[spring-context-5.0.5.RELEASE.jar:5.0.5.RELEASE] at org.springframework.context.support.AbstractApplicationContext.publishEvent(AbstractApplicationContext.java:400) ~[spring-context-5.0.5.RELEASE.jar:5.0.5.RELEASE] at org.springframework.context.support.AbstractApplicationContext.publishEvent(AbstractApplicationContext.java:354) ~[spring-context-5.0.5.RELEASE.jar:5.0.5.RELEASE] at org.springframework.context.support.AbstractApplicationContext.finishRefresh(AbstractApplicationContext.java:888) ~[spring-context-5.0.5.RELEASE.jar:5.0.5.RELEASE] at org.springframework.boot.web.servlet.context.ServletWebServerApplicationContext.finishRefresh(ServletWebServerApplicationContext.java:161) ~[spring-boot-2.0.1.RELEASE.jar:2.0.1.RELEASE] at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:553) ~[spring-context-5.0.5.RELEASE.jar:5.0.5.RELEASE] at org.springframework.boot.web.servlet.context.ServletWebServerApplicationContext.refresh(ServletWebServerApplicationContext.java:140) ~[spring-boot-2.0.1.RELEASE.jar:2.0.1.RELEASE] at org.springframework.boot.SpringApplication.refresh(SpringApplication.java:759) ~[spring-boot-2.0.1.RELEASE.jar:2.0.1.RELEASE] at org.springframework.boot.SpringApplication.refreshContext(SpringApplication.java:395) ~[spring-boot-2.0.1.RELEASE.jar:2.0.1.RELEASE] at org.springframework.boot.SpringApplication.run(SpringApplication.java:327) ~[spring-boot-2.0.1.RELEASE.jar:2.0.1.RELEASE] at com.alibaba.otter.canal.adapter.launcher.CanalAdapterApplication.main(CanalAdapterApplication.java:19) ~[classes/:na] Caused by: java.lang.RuntimeException: java.lang.ClassCastException: com.alibaba.druid.pool.DruidDataSource cannot be cast to com.alibaba.druid.pool.DruidDataSource at com.alibaba.otter.canal.client.adapter.es.core.ESAdapter.init(ESAdapter.java:83) ~[client-adapter.es7x-1.1.5-SNAPSHOT-jar-with-dependencies.jar:na] at com.alibaba.otter.canal.client.adapter.es7x.ES7xAdapter.init(ES7xAdapter.java:52) ~[client-adapter.es7x-1.1.5-SNAPSHOT-jar-with-dependencies.jar:na] ... 42 common frames omitted Caused by: java.lang.ClassCastException: com.alibaba.druid.pool.DruidDataSource cannot be cast to com.alibaba.druid.pool.DruidDataSource at com.alibaba.otter.canal.client.adapter.es.core.ESAdapter.addSyncConfigToCache(ESAdapter.java:146) ~[client-adapter.es7x-1.1.5-SNAPSHOT-jar-with-dependencies.jar:na] at com.alibaba.otter.canal.client.adapter.es.core.ESAdapter.init(ESAdapter.java:75) ~[client-adapter.es7x-1.1.5-SNAPSHOT-jar-with-dependencies.jar:na] ... 43 common frames omitted
步骤重现 本地调试:
1.mvn clean package -Dmaven.test.skip=true
2.启动CanalAdapterApplication
期待结果
启动正常
现执行情况
在加载Conf文件夹之后的文件获取DataSource的时候,出现上面的异常信息!
原提问者GitHub用户liuxuzxx
跟踪了一下代码,发现这个问题的原因是:
com.alibaba.otter.canal.client.adapter.es.core.ESAdapter类的 146行: DruidDataSource dataSource = DatasourceConfig.DATA_SOURCES.get(config.getDataSourceKey());
DruidDataSource.class.getClassLoader()是: com.alibaba.otter.canal.client.adapter.support.URLClassExtensionLoader
DatasourceConfig.DATA_SOURCES.get(config.getDataSourceKey()).getClass().getClassLoader()是: sun.misc.Launcher.AppClassLoader
这么看上面的异常日志信息,确实也就正常了
原回答者GitHub用户liuxuzxx
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