[logback-dev] [JIRA] (LOGBACK-1498) When skipping lines with ThrowableProxyConverter the exception origin may be lost.

[QOS.CH (JIRA)]

Mark created LOGBACK-1498:
-----------------------------

             Summary: When skipping lines with ThrowableProxyConverter the exception origin may be lost.
                 Key: LOGBACK-1498
                 URL: https://jira.qos.ch/browse/LOGBACK-1498
             Project: logback
          Issue Type: Improvement
          Components: logback-classic
    Affects Versions: 1.3.0-alpha5
            Reporter: Mark
            Assignee: Logback dev list


The ability to exclude lines from the stacktrace is little known and extremely helpful, especially when using frameworks that use proxies and have deeply nested calls and exceptions.

We are using this feature with the configuration below in Spring Boot but we lose some information if the Exception originates in some of the framework code. 

For example if the exception is thrown from "org.springframework.web.filter" the location of the problem is suppressed!

In ThrowableProxyConverter a single line change will improve this. I have made the change locally and provided a new junit test method in ThrowableProxyConverterTest.

If you are receptive to the change I will create a PR.

thank you,
Mark

{code:xml}
<pattern>%-4relative [%thread] %-5level %logger{35} - %msg %n%ex{1000000,
    com.sun.proxy.,
    java.lang.reflect.,
    javax.servlet.,
    org.springframework.cglib.,
    org.springframework.aop.,
    org.springframework.transaction.interceptor.TransactionAspectSupport.,
    org.springframework.validation.beanvalidation.MethodValidationInterceptor.,
    org.springframework.boot.actuate.web.trace.,
    org.springframework.security.web.,
    org.springframework.boot.actuate.,
    org.springframework.web.servlet.,
    org.springframework.web.method.,
    org.springframework.web.filter.,
    org.apache.coyote.,
    org.apache.catalina.,
    org.apache.tomcat.,
    sun.reflect.}
{code}



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