Hello,

I'm having the same problem and wonder if there is a complete example of how to configure a JDBC Appender programmatically.

I'm too getting the exception "Arguments given for element JDBC are invalid: field 'connectionSource' has invalid value 'null'".

Thanks
Martin

On 2019/03/18 15:00:04, Arnold Morein <arnie.mor...@me.com.INVALID> wrote:
> I am trying to configure a JDBC logger via code (no problems using it from XML file).
>
> I'm using Log4j2 version 2.11.2. What examples I can find are vague, incomplete, or not related.
>
> I'm finding code that may be for log4j1 and log4-jdbc but no jars in mvnrepository.com so is that old and deprecated now too?
>
> I have:
>
> log4j-1.2-api-2.11.2.jar
> log4j-api-2.11.2.jar
> log4j-core-2.11.2.jar
> log4j-over-slf4j-1.7.2.jar
> log4j-slf4j-impl-2.11.2.jar
> log4j-web-2.11.2.jar
> slf4j-api-1.7.26.jar
>
> in a war project.
>
> In a nut shell, the following code
>
>         ColumnConfig[] columnConfigsArray = columnConfigs.toArray(new ColumnConfig[columnConfigs.size()]);
>
>         JNDIConnectionSource connectionSource = new JNDIConnectionSource(); > connectionSource.setJndiLocation(activityLogConfiguration.getDataSourceUrl());
>
>         AppenderComponentBuilder appenderBuilder = configBuilder.newAppender(ACTIVITY_LOG_APPENDER, "JDBC")
>             .addAttribute("connectionSource", connectionSource)
>             .addAttribute("columnConfigs", columnConfigsArray)
>             .addAttribute("tableName", activityLogConfiguration.getSchemaNameAndTableName()) >             .addAttribute("bufferSize", activityLogConfiguration.getBufferSize());
>
>         // complete the configuration
>         appenderBuilder.build();
>
>         // build the logger and add to the appender
>         AppenderRefComponentBuilder appenderRef = configBuilder.newAppenderRef(ACTIVITY_LOG_APPENDER);
>
>         LoggerComponentBuilder logger = configBuilder.newLogger(ACTIVITY_LOG_APPENDER, Level.INFO);
>         logger.add(appenderRef);
>         logger.build();
>
>         configBuilder.add(logger);
>
> always results in:
>
> 09:55:16,864 INFO  [stdout] (ServerService Thread Pool -- 77) 2019-03-18 09:55:16,863 ServerService Thread Pool -- 77 ERROR No ConnectionSource provided: connectionSource > 09:55:16,877 INFO  [stdout] (ServerService Thread Pool -- 77) 2019-03-18 09:55:16,873 ServerService Thread Pool -- 77 ERROR Could not create plugin of type class org.apache.logging.log4j.core.appender.db.jdbc.JdbcAppender for element JDBC org.apache.logging.log4j.core.config.ConfigurationException: Arguments given for element JDBC are invalid: field 'connectionSource' has invalid value 'null' > 09:55:16,877 INFO  [stdout] (ServerService Thread Pool -- 77)     at org.apache.logging.log4j.core.config.plugins.util.PluginBuilder.injectFields(PluginBuilder.java:209) > 09:55:16,877 INFO  [stdout] (ServerService Thread Pool -- 77)     at org.apache.logging.log4j.core.config.plugins.util.PluginBuilder.build(PluginBuilder.java:122) > 09:55:16,877 INFO  [stdout] (ServerService Thread Pool -- 77)     at org.apache.logging.log4j.core.config.AbstractConfiguration.createPluginObject(AbstractConfiguration.java:959) > 09:55:16,877 INFO  [stdout] (ServerService Thread Pool -- 77)     at org.apache.logging.log4j.core.config.AbstractConfiguration.createConfiguration(AbstractConfiguration.java:899) > 09:55:16,877 INFO  [stdout] (ServerService Thread Pool -- 77)     at org.apache.logging.log4j.core.config.AbstractConfiguration.createConfiguration(AbstractConfiguration.java:891) > 09:55:16,877 INFO  [stdout] (ServerService Thread Pool -- 77)     at org.apache.logging.log4j.core.config.AbstractConfiguration.doConfigure(AbstractConfiguration.java:514) > 09:55:16,877 INFO  [stdout] (ServerService Thread Pool -- 77)     at org.apache.logging.log4j.core.config.AbstractConfiguration.initialize(AbstractConfiguration.java:238) > 09:55:16,877 INFO  [stdout] (ServerService Thread Pool -- 77)     at org.apache.logging.log4j.core.config.builder.impl.DefaultConfigurationBuilder.build(DefaultConfigurationBuilder.java:204) > 09:55:16,877 INFO  [stdout] (ServerService Thread Pool -- 77)     at org.apache.logging.log4j.core.config.builder.impl.DefaultConfigurationBuilder.build(DefaultConfigurationBuilder.java:161) > 09:55:16,877 INFO  [stdout] (ServerService Thread Pool -- 77)     at org.apache.logging.log4j.core.config.builder.impl.DefaultConfigurationBuilder.build(DefaultConfigurationBuilder.java:57) > 09:55:16,878 INFO  [stdout] (ServerService Thread Pool -- 77)     at gov.texas.dps.itd.ias.app.logging.config.ConfigureActivityLog4j.configureLoggingForEnvironment(ConfigureActivityLog4j.java:61) > 09:55:16,878 INFO  [stdout] (ServerService Thread Pool -- 77)     at gov.texas.dps.aamva.mock.startup.StartupServletListener.contextInitialized(StartupServletListener.java:47) > 09:55:16,878 INFO  [stdout] (ServerService Thread Pool -- 77)     at io.undertow.servlet.core.ApplicationListeners.contextInitialized(ApplicationListeners.java:187) > 09:55:16,878 INFO  [stdout] (ServerService Thread Pool -- 77)     at io.undertow.servlet.core.DeploymentManagerImpl$1.call(DeploymentManagerImpl.java:217) > 09:55:16,878 INFO  [stdout] (ServerService Thread Pool -- 77)     at io.undertow.servlet.core.DeploymentManagerImpl$1.call(DeploymentManagerImpl.java:186) > 09:55:16,878 INFO  [stdout] (ServerService Thread Pool -- 77)     at io.undertow.servlet.core.ServletRequestContextThreadSetupAction$1.call(ServletRequestContextThreadSetupAction.java:42) > 09:55:16,878 INFO  [stdout] (ServerService Thread Pool -- 77)     at io.undertow.servlet.core.ContextClassLoaderSetupAction$1.call(ContextClassLoaderSetupAction.java:43) > 09:55:16,878 INFO  [stdout] (ServerService Thread Pool -- 77)     at org.wildfly.extension.undertow.security.SecurityContextThreadSetupAction.lambda$create$0(SecurityContextThreadSetupAction.java:105) > 09:55:16,878 INFO  [stdout] (ServerService Thread Pool -- 77)     at org.wildfly.extension.undertow.deployment.UndertowDeploymentInfoService$UndertowThreadSetupAction.lambda$create$0(UndertowDeploymentInfoService.java:1514) > 09:55:16,878 INFO  [stdout] (ServerService Thread Pool -- 77)     at org.wildfly.extension.undertow.deployment.UndertowDeploymentInfoService$UndertowThreadSetupAction.lambda$create$0(UndertowDeploymentInfoService.java:1514) > 09:55:16,878 INFO  [stdout] (ServerService Thread Pool -- 77)     at org.wildfly.extension.undertow.deployment.UndertowDeploymentInfoService$UndertowThreadSetupAction.lambda$create$0(UndertowDeploymentInfoService.java:1514) > 09:55:16,878 INFO  [stdout] (ServerService Thread Pool -- 77)     at org.wildfly.extension.undertow.deployment.UndertowDeploymentInfoService$UndertowThreadSetupAction.lambda$create$0(UndertowDeploymentInfoService.java:1514) > 09:55:16,878 INFO  [stdout] (ServerService Thread Pool -- 77)     at org.wildfly.extension.undertow.deployment.UndertowDeploymentInfoService$UndertowThreadSetupAction.lambda$create$0(UndertowDeploymentInfoService.java:1514) > 09:55:16,878 INFO  [stdout] (ServerService Thread Pool -- 77)     at io.undertow.servlet.core.DeploymentManagerImpl.deploy(DeploymentManagerImpl.java:251) > 09:55:16,878 INFO  [stdout] (ServerService Thread Pool -- 77)     at org.wildfly.extension.undertow.deployment.UndertowDeploymentService.startContext(UndertowDeploymentService.java:96) > 09:55:16,878 INFO  [stdout] (ServerService Thread Pool -- 77)     at org.wildfly.extension.undertow.deployment.UndertowDeploymentService$1.run(UndertowDeploymentService.java:78) > 09:55:16,879 INFO  [stdout] (ServerService Thread Pool -- 77)     at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) > 09:55:16,879 INFO  [stdout] (ServerService Thread Pool -- 77)     at java.util.concurrent.FutureTask.run(FutureTask.java:266) > 09:55:16,879 INFO  [stdout] (ServerService Thread Pool -- 77)     at org.jboss.threads.ContextClassLoaderSavingRunnable.run(ContextClassLoaderSavingRunnable.java:35) > 09:55:16,879 INFO  [stdout] (ServerService Thread Pool -- 77)     at org.jboss.threads.EnhancedQueueExecutor.safeRun(EnhancedQueueExecutor.java:1985) > 09:55:16,879 INFO  [stdout] (ServerService Thread Pool -- 77)     at org.jboss.threads.EnhancedQueueExecutor$ThreadBody.doRunTask(EnhancedQueueExecutor.java:1487) > 09:55:16,879 INFO  [stdout] (ServerService Thread Pool -- 77)     at org.jboss.threads.EnhancedQueueExecutor$ThreadBody.run(EnhancedQueueExecutor.java:1378) > 09:55:16,879 INFO  [stdout] (ServerService Thread Pool -- 77)     at java.lang.Thread.run(Thread.java:748) > 09:55:16,879 INFO  [stdout] (ServerService Thread Pool -- 77)     at org.jboss.threads.JBossThread.run(JBossThread.java:485)
> 09:55:16,879 INFO  [stdout] (ServerService Thread Pool -- 77)
> 09:55:16,884 INFO  [stdout] (ServerService Thread Pool -- 77) 2019-03-18 09:55:16,884 ServerService Thread Pool -- 77 ERROR Null object returned for JDBC in Appenders. > 09:55:16,885 INFO  [stdout] (ServerService Thread Pool -- 77) 2019-03-18 09:55:16,885 ServerService Thread Pool -- 77 ERROR Unable to locate appender "ACTIVITY_LOGGER" for logger config "ACTIVITY_LOGGER"
>
> But the connectionSource object I'm passing is is NOT null.
>
> What am I missing?
>
>

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