[Apiman-user] How to set apiman logging (NullPointerException when using Log4j2LoggerFactory)

[Eric Wittmann]

You are just *slightly* off in your apiman.properties configuration! 
And it's understandable, as you'll see shortly.  :)

You have modified "apiman-gateway.logger-factory" to have the following 
value:

   io.apiman.common.logging.log4j2.Log4j2LoggerFactory

But instead it should be this:

   io.apiman.common.logging.slf4j.Log4j2LoggerFactory

-Eric

On 6/22/2016 7:40 PM, ejlp ejlp wrote:
> Hi,
>
> I was trying to use Log Header policy but no logging message shown in
> Gatway's console or server.log.
> I am using JBoss EAP 7.0 and Apiman 1.2.6.Final
>
> This is what I've done in Gateway node:
>
> * Use extracted war of apiman-gateway-api.war and apiman-gateway.war
> * Put apiman-common-logging-log4j2-1.2.6.Final.jar into
> <JBOSS_HOME>/standalone/deployment/apiman-gateway-api.war/WEB-INF/lib/
> and <JBOSS_HOME>/standalone/deployment/apiman-gateway.war/WEB-INF/lib/
> * Remove following line from apiman.properties
>
>   apiman-gateway.logger-factory=io.apiman.common.logging.impl.NoOpLoggerFactory
>
>   and put this line:
>
>   apiman-gateway.logger-factory=io.apiman.common.logging.log4j2.Log4j2LoggerFactory
>
> * Restart JBoss EAP
>
> I got following stacktrace when EAP started:
>
> 05:58:00,693 ERROR [org.jboss.msc.service.fail] (ServerService Thread
> Pool -- 64) MSC000001: Failed to start service
> jboss.undertow.deployment.default-server.default-host./apiman-gateway-api:
> org.jboss.msc.service.StartException in service
> jboss.undertow.deployment.default-server.default-host./apiman-gateway-api:
> java.lang.RuntimeException: java.lang.RuntimeException:
> java.lang.NullPointerException
> at org.wildfly.extension.undertow.deployment.UndertowDeploymentService$1.run(UndertowDeploymentService.java:85)
> at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511)
> at java.util.concurrent.FutureTask.run(FutureTask.java:266)
> at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
> at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
> at java.lang.Thread.run(Thread.java:745)
> at org.jboss.threads.JBossThread.run(JBossThread.java:320)
> Caused by: java.lang.RuntimeException: java.lang.RuntimeException:
> java.lang.NullPointerException
> at io.undertow.servlet.core.DeploymentManagerImpl.deploy(DeploymentManagerImpl.java:231)
> at org.wildfly.extension.undertow.deployment.UndertowDeploymentService.startContext(UndertowDeploymentService.java:100)
> at org.wildfly.extension.undertow.deployment.UndertowDeploymentService$1.run(UndertowDeploymentService.java:82)
> ... 6 more
> Caused by: java.lang.RuntimeException: java.lang.NullPointerException
> at io.apiman.gateway.engine.impl.ConfigDrivenEngineFactory.instantiate(ConfigDrivenEngineFactory.java:179)
> at io.apiman.gateway.engine.impl.ConfigDrivenEngineFactory.create(ConfigDrivenEngineFactory.java:163)
> at io.apiman.gateway.engine.impl.ConfigDrivenEngineFactory.createLoggerFactory(ConfigDrivenEngineFactory.java:152)
> at io.apiman.gateway.engine.impl.AbstractEngineFactory.createEngine(AbstractEngineFactory.java:60)
> at io.apiman.gateway.platforms.war.WarGateway.init(WarGateway.java:55)
> at io.apiman.gateway.platforms.war.listeners.WarGatewayBootstrapper.contextInitialized(WarGatewayBootstrapper.java:42)
> at io.undertow.servlet.core.ApplicationListeners.contextInitialized(ApplicationListeners.java:187)
> at io.undertow.servlet.core.DeploymentManagerImpl.deploy(DeploymentManagerImpl.java:198)
> ... 8 more
> Caused by: java.lang.NullPointerException
> at io.apiman.gateway.engine.impl.ConfigDrivenEngineFactory.instantiate(ConfigDrivenEngineFactory.java:175)
> ... 15 more
>
> 05:58:00,695 ERROR [org.jboss.as.controller.management-operation]
> (DeploymentScanner-threads - 1) WFLYCTL0013: Operation ("deploy")
> failed - address: ([("deployment" => "apiman-gateway-api.war")]) -
> failure description: {"WFLYCTL0080: Failed services" =>
> {"jboss.undertow.deployment.default-server.default-host./apiman-gateway-api"
> => "org.jboss.msc.service.StartException in service
> jboss.undertow.deployment.default-server.default-host./apiman-gateway-api:
> java.lang.RuntimeException: java.lang.RuntimeException:
> java.lang.NullPointerException
>     Caused by: java.lang.RuntimeException: java.lang.RuntimeException:
> java.lang.NullPointerException
>     Caused by: java.lang.RuntimeException: java.lang.NullPointerException
>     Caused by: java.lang.NullPointerException"}}
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