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Posted to notifications@logging.apache.org by "zi4k4j74yn (via GitHub)" <gi...@apache.org> on 2023/04/29 08:06:23 UTC

[I] XML config from documentation does not validate against schema (file appender) (logging-log4j2)

zi4k4j74yn opened a new issue, #1456:
URL: https://github.com/apache/logging-log4j2/issues/1456

   ## Description
   
   I am using the example configuration from https://logging.apache.org/log4j/2.x/manual/appenders.html#FileAppender and just added the schema configuration:
   
   ```
   <?xml version="1.0" encoding="UTF-8"?>
   <Configuration xmlns="http://logging.apache.org/log4j/2.0/config"
    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
    xsi:schemaLocation="http://logging.apache.org/log4j/2.0/config https://raw.githubusercontent.com/apache/logging-log4j2/master/log4j-core/src/main/resources/Log4j-config.xsd" status="warn" name="MyApp">
     <Appenders>
       <File name="MyFile" fileName="logs/app.log">
         <PatternLayout>
           <Pattern>%d %p %c{1.} [%t] %m%n</Pattern>
         </PatternLayout>
       </File>
     </Appenders>
     <Loggers>
       <Root level="error">
         <AppenderRef ref="MyFile"/>
       </Root>
     </Loggers>
   </Configuration>
   ```
   
   This config fails to validate against https://raw.githubusercontent.com/apache/logging-log4j2/master/log4j-core/src/main/resources/Log4j-config.xsd (error below).
   
   ## Configuration
   
   **Version:** 2.20.0
   
   **Operating system:** Ubuntu 22.04
   
   **JDK:** OpenJDK 20
   
   ## Logs
   
   Message from [xmllint](https://gitlab.gnome.org/GNOME/libxml2/-/wikis/home):
   ```
   log4j2.xml:6: element File: Schemas validity error : Element '{http://logging.apache.org/log4j/2.0/config}File': This element is not expected. Expected is one of ( {http://logging.apache.org/log4j/2.0/config}Appender, {http://logging.apache.org/log4j/2.0/config}Console ).
   log4j2.xml fails to validate
   ```
   
   Eclipse gives a similar error:
   
   ```
   cvc-complex-types.2.4.d: Invalid content was found starting with element 'File'. [...]
   ```
   
   ## Reproduction
   
   Create config file as specified and verify against linked schema (either via `xmllint --noout --schema Log4j-config.xsd log4j2.xml` or via Eclipse).
   


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Re: [I] XML config from documentation does not validate against schema (file appender) (logging-log4j2)

Posted by "zi4k4j74yn (via GitHub)" <gi...@apache.org>.
zi4k4j74yn commented on issue #1456:
URL: https://github.com/apache/logging-log4j2/issues/1456#issuecomment-1528784795

   My bad, I did not see the main branch. Thank you a lot for the clarification!


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Re: [I] XML config from documentation does not validate against schema (file appender) (logging-log4j2)

Posted by "zi4k4j74yn (via GitHub)" <gi...@apache.org>.
zi4k4j74yn closed issue #1456: XML config from documentation does not validate against schema (file appender)
URL: https://github.com/apache/logging-log4j2/issues/1456


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Re: [I] XML config from documentation does not validate against schema (file appender) (logging-log4j2)

Posted by "ppkarwasz (via GitHub)" <gi...@apache.org>.
ppkarwasz commented on issue #1456:
URL: https://github.com/apache/logging-log4j2/issues/1456#issuecomment-1528782021

   @zi4k4j74yn,
   
   We renamed `master` to `main` a couple of months ago. So this is the current schema on master: https://raw.githubusercontent.com/apache/logging-log4j2/main/log4j-core/src/main/resources/Log4j-config.xsd
   
   However, similarly to Ant and Maven, Log4j's configuration is schema-less: unless you are using the [strict XML syntax](https://logging.apache.org/log4j/2.x/manual/configuration.html#strict-xml) (which you are not), you can not verify every valid Log4j configuration with a schema.
   
   The one we provide only contains (part of) the definitions of those components maintained by Apache Logging Services, but there are also many custom components developed by third parties.


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