Hello, I got a problem when trying to deploy an application into Tomcat i got this exception : org.slf4j.helpers.NOPLogger cannot be cast to ch.qos.logback.classic.Logger and the line in my code is : ch.qos.logback.classic.Logger applicationLogger = (Logger) org.slf4j.LoggerFactory.getLogger("my.logger.name"); any idea ? Thanks
Date: Wed, 24 Aug 2011 18:00:25 +0200 From: ceki@qos.ch To: logback-user@qos.ch Subject: Re: [logback-user] Exception and error safe logging
Checking up on this, the AppenderBase and UnsynchronizedAppenderBase classes catch all instances java.lang.Exception and derivatives but not java.land.Error.
At present time, you would need to handle OutOfMemoryError on your own.
Sorry for the bs in my previous message.
On 24/08/2011 5:53 PM, Ceki Gülcü wrote:
On 24/08/2011 4:14 PM, Adam Fitzgerald wrote:
Hello,
For a project I'm working on we would like to be able to attempt recovery after the occurrence exceptions and some errors, and are investigating methods of integrating the use of logback into this strategy. In the case of exceptions, does logback make any guarantee about what will/won't be thrown from the message logging methods? Is there anything like a 'safe' logging API that will not throw?
Logback will never throw exceptions visible at the application layer.
Secondly we want to catch OOM errors that may occur in a call to logback. The simplest (but tedious) approach would be to wrap the calls in a try-catch block. Alternatively we are considering proxying the logger and wrapping the calls to the real logger in a try catch within the proxy. Can anyone forsee any issues with doing this? Does any kind of functionality like this already exist?
That includes OOM.
Thanks in advance, Adam
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