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  1. Log4j 2
  2. LOG4J2-1880

Confusing configuration file discovery

    Details

    • Type: Improvement
    • Status: Closed
    • Priority: Major
    • Resolution: Fixed
    • Affects Version/s: 2.8.2
    • Fix Version/s: 2.9.0
    • Component/s: Configurators
    • Labels:
      None

      Description

      Some configuration file formats (JSON, YAML) require additional runtime dependencies. If a such dependency is missing, configuration file discovery will stop and not try other configuration files with lower priority.

      E.g. if I have both log4j2.json and log4j2.xml in classpath, but not Jackson (required for JSON config), then no configuration file will be loaded and I get this error:

      ERROR StatusLogger No log4j2 configuration file found. Using default configuration: logging only errors to the console. Set system property 'org.apache.logging.log4j.simplelog.StatusLogger.level' to TRACE to show Log4j2 internal initialization logging.
      

      When enabling status logging TRACE, I get a lot of logging (see below) and it's not so easy to figure out what went wrong.

      I would like a more clear error message on WARN level when this happen.

      DEBUG StatusLogger Loaded Provider Provider[priority=10, className=org.apache.logging.log4j.core.impl.Log4jContextFactory, url=jar:file:/home/mikes/.m2/repository/org/apache/logging/log4j/log4j-core/2.8.2/log4j-core-2.8.2.jar!/META-INF/log4j-provider.properties, classLoader=sun.misc.Launcher$AppClassLoader@18b4aac2]
      DEBUG StatusLogger Using ShutdownCallbackRegistry class org.apache.logging.log4j.core.util.DefaultShutdownCallbackRegistry
      DEBUG StatusLogger Not in a ServletContext environment, thus not loading WebLookup plugin.
      DEBUG StatusLogger AsyncLogger.ThreadNameStrategy=CACHED
      TRACE StatusLogger Using default SystemClock for timestamps.
      DEBUG StatusLogger Not in a ServletContext environment, thus not loading WebLookup plugin.
      DEBUG StatusLogger Took 0.096889 seconds to load 198 plugins from sun.misc.Launcher$AppClassLoader@18b4aac2
      DEBUG StatusLogger PluginManager 'Converter' found 41 plugins
      DEBUG StatusLogger Starting OutputStreamManager SYSTEM_OUT.false.false-1
      DEBUG StatusLogger Starting LoggerContext[name=18b4aac2, org.apache.logging.log4j.core.LoggerContext@6d8a00e3]...
      DEBUG StatusLogger Reconfiguration started for context[name=18b4aac2] at URI null (org.apache.logging.log4j.core.LoggerContext@6d8a00e3) with optional ClassLoader: null
      DEBUG StatusLogger Not in a ServletContext environment, thus not loading WebLookup plugin.
      DEBUG StatusLogger PluginManager 'ConfigurationFactory' found 4 plugins
      DEBUG StatusLogger Not in a ServletContext environment, thus not loading WebLookup plugin.
      DEBUG StatusLogger Not in a ServletContext environment, thus not loading WebLookup plugin.
      DEBUG StatusLogger Missing dependencies for Yaml support
      DEBUG StatusLogger Not in a ServletContext environment, thus not loading WebLookup plugin.
      DEBUG StatusLogger Missing dependencies for Json support
      DEBUG StatusLogger Not in a ServletContext environment, thus not loading WebLookup plugin.
      DEBUG StatusLogger Using configurationFactory org.apache.logging.log4j.core.config.ConfigurationFactory$Factory@3a82f6ef
      TRACE StatusLogger Trying to find [log4j2-test18b4aac2.properties] using context class loader sun.misc.Launcher$AppClassLoader@18b4aac2.
      TRACE StatusLogger Trying to find [log4j2-test18b4aac2.properties] using sun.misc.Launcher$AppClassLoader@18b4aac2 class loader.
      TRACE StatusLogger Trying to find [log4j2-test18b4aac2.properties] using sun.misc.Launcher$AppClassLoader@18b4aac2 class loader.
      TRACE StatusLogger Trying to find [log4j2-test18b4aac2.properties] using ClassLoader.getSystemResource().
      TRACE StatusLogger Trying to find [log4j2-test18b4aac2.yml] using context class loader sun.misc.Launcher$AppClassLoader@18b4aac2.
      TRACE StatusLogger Trying to find [log4j2-test18b4aac2.yml] using sun.misc.Launcher$AppClassLoader@18b4aac2 class loader.
      TRACE StatusLogger Trying to find [log4j2-test18b4aac2.yml] using sun.misc.Launcher$AppClassLoader@18b4aac2 class loader.
      TRACE StatusLogger Trying to find [log4j2-test18b4aac2.yml] using ClassLoader.getSystemResource().
      TRACE StatusLogger Trying to find [log4j2-test18b4aac2.yaml] using context class loader sun.misc.Launcher$AppClassLoader@18b4aac2.
      TRACE StatusLogger Trying to find [log4j2-test18b4aac2.yaml] using sun.misc.Launcher$AppClassLoader@18b4aac2 class loader.
      TRACE StatusLogger Trying to find [log4j2-test18b4aac2.yaml] using sun.misc.Launcher$AppClassLoader@18b4aac2 class loader.
      TRACE StatusLogger Trying to find [log4j2-test18b4aac2.yaml] using ClassLoader.getSystemResource().
      TRACE StatusLogger Trying to find [log4j2-test18b4aac2.json] using context class loader sun.misc.Launcher$AppClassLoader@18b4aac2.
      TRACE StatusLogger Trying to find [log4j2-test18b4aac2.json] using sun.misc.Launcher$AppClassLoader@18b4aac2 class loader.
      TRACE StatusLogger Trying to find [log4j2-test18b4aac2.json] using sun.misc.Launcher$AppClassLoader@18b4aac2 class loader.
      TRACE StatusLogger Trying to find [log4j2-test18b4aac2.json] using ClassLoader.getSystemResource().
      TRACE StatusLogger Trying to find [log4j2-test18b4aac2.jsn] using context class loader sun.misc.Launcher$AppClassLoader@18b4aac2.
      TRACE StatusLogger Trying to find [log4j2-test18b4aac2.jsn] using sun.misc.Launcher$AppClassLoader@18b4aac2 class loader.
      TRACE StatusLogger Trying to find [log4j2-test18b4aac2.jsn] using sun.misc.Launcher$AppClassLoader@18b4aac2 class loader.
      TRACE StatusLogger Trying to find [log4j2-test18b4aac2.jsn] using ClassLoader.getSystemResource().
      TRACE StatusLogger Trying to find [log4j2-test18b4aac2.xml] using context class loader sun.misc.Launcher$AppClassLoader@18b4aac2.
      TRACE StatusLogger Trying to find [log4j2-test18b4aac2.xml] using sun.misc.Launcher$AppClassLoader@18b4aac2 class loader.
      TRACE StatusLogger Trying to find [log4j2-test18b4aac2.xml] using sun.misc.Launcher$AppClassLoader@18b4aac2 class loader.
      TRACE StatusLogger Trying to find [log4j2-test18b4aac2.xml] using ClassLoader.getSystemResource().
      TRACE StatusLogger Trying to find [log4j2-test.properties] using context class loader sun.misc.Launcher$AppClassLoader@18b4aac2.
      TRACE StatusLogger Trying to find [log4j2-test.properties] using sun.misc.Launcher$AppClassLoader@18b4aac2 class loader.
      TRACE StatusLogger Trying to find [log4j2-test.properties] using sun.misc.Launcher$AppClassLoader@18b4aac2 class loader.
      TRACE StatusLogger Trying to find [log4j2-test.properties] using ClassLoader.getSystemResource().
      TRACE StatusLogger Trying to find [log4j2-test.yml] using context class loader sun.misc.Launcher$AppClassLoader@18b4aac2.
      TRACE StatusLogger Trying to find [log4j2-test.yml] using sun.misc.Launcher$AppClassLoader@18b4aac2 class loader.
      TRACE StatusLogger Trying to find [log4j2-test.yml] using sun.misc.Launcher$AppClassLoader@18b4aac2 class loader.
      TRACE StatusLogger Trying to find [log4j2-test.yml] using ClassLoader.getSystemResource().
      TRACE StatusLogger Trying to find [log4j2-test.yaml] using context class loader sun.misc.Launcher$AppClassLoader@18b4aac2.
      TRACE StatusLogger Trying to find [log4j2-test.yaml] using sun.misc.Launcher$AppClassLoader@18b4aac2 class loader.
      TRACE StatusLogger Trying to find [log4j2-test.yaml] using sun.misc.Launcher$AppClassLoader@18b4aac2 class loader.
      TRACE StatusLogger Trying to find [log4j2-test.yaml] using ClassLoader.getSystemResource().
      TRACE StatusLogger Trying to find [log4j2-test.json] using context class loader sun.misc.Launcher$AppClassLoader@18b4aac2.
      TRACE StatusLogger Trying to find [log4j2-test.json] using sun.misc.Launcher$AppClassLoader@18b4aac2 class loader.
      TRACE StatusLogger Trying to find [log4j2-test.json] using sun.misc.Launcher$AppClassLoader@18b4aac2 class loader.
      TRACE StatusLogger Trying to find [log4j2-test.json] using ClassLoader.getSystemResource().
      TRACE StatusLogger Trying to find [log4j2-test.jsn] using context class loader sun.misc.Launcher$AppClassLoader@18b4aac2.
      TRACE StatusLogger Trying to find [log4j2-test.jsn] using sun.misc.Launcher$AppClassLoader@18b4aac2 class loader.
      TRACE StatusLogger Trying to find [log4j2-test.jsn] using sun.misc.Launcher$AppClassLoader@18b4aac2 class loader.
      TRACE StatusLogger Trying to find [log4j2-test.jsn] using ClassLoader.getSystemResource().
      TRACE StatusLogger Trying to find [log4j2-test.xml] using context class loader sun.misc.Launcher$AppClassLoader@18b4aac2.
      TRACE StatusLogger Trying to find [log4j2-test.xml] using sun.misc.Launcher$AppClassLoader@18b4aac2 class loader.
      TRACE StatusLogger Trying to find [log4j2-test.xml] using sun.misc.Launcher$AppClassLoader@18b4aac2 class loader.
      TRACE StatusLogger Trying to find [log4j2-test.xml] using ClassLoader.getSystemResource().
      TRACE StatusLogger Trying to find [log4j218b4aac2.properties] using context class loader sun.misc.Launcher$AppClassLoader@18b4aac2.
      TRACE StatusLogger Trying to find [log4j218b4aac2.properties] using sun.misc.Launcher$AppClassLoader@18b4aac2 class loader.
      TRACE StatusLogger Trying to find [log4j218b4aac2.properties] using sun.misc.Launcher$AppClassLoader@18b4aac2 class loader.
      TRACE StatusLogger Trying to find [log4j218b4aac2.properties] using ClassLoader.getSystemResource().
      TRACE StatusLogger Trying to find [log4j218b4aac2.yml] using context class loader sun.misc.Launcher$AppClassLoader@18b4aac2.
      TRACE StatusLogger Trying to find [log4j218b4aac2.yml] using sun.misc.Launcher$AppClassLoader@18b4aac2 class loader.
      TRACE StatusLogger Trying to find [log4j218b4aac2.yml] using sun.misc.Launcher$AppClassLoader@18b4aac2 class loader.
      TRACE StatusLogger Trying to find [log4j218b4aac2.yml] using ClassLoader.getSystemResource().
      TRACE StatusLogger Trying to find [log4j218b4aac2.yaml] using context class loader sun.misc.Launcher$AppClassLoader@18b4aac2.
      TRACE StatusLogger Trying to find [log4j218b4aac2.yaml] using sun.misc.Launcher$AppClassLoader@18b4aac2 class loader.
      TRACE StatusLogger Trying to find [log4j218b4aac2.yaml] using sun.misc.Launcher$AppClassLoader@18b4aac2 class loader.
      TRACE StatusLogger Trying to find [log4j218b4aac2.yaml] using ClassLoader.getSystemResource().
      TRACE StatusLogger Trying to find [log4j218b4aac2.json] using context class loader sun.misc.Launcher$AppClassLoader@18b4aac2.
      TRACE StatusLogger Trying to find [log4j218b4aac2.json] using sun.misc.Launcher$AppClassLoader@18b4aac2 class loader.
      TRACE StatusLogger Trying to find [log4j218b4aac2.json] using sun.misc.Launcher$AppClassLoader@18b4aac2 class loader.
      TRACE StatusLogger Trying to find [log4j218b4aac2.json] using ClassLoader.getSystemResource().
      TRACE StatusLogger Trying to find [log4j218b4aac2.jsn] using context class loader sun.misc.Launcher$AppClassLoader@18b4aac2.
      TRACE StatusLogger Trying to find [log4j218b4aac2.jsn] using sun.misc.Launcher$AppClassLoader@18b4aac2 class loader.
      TRACE StatusLogger Trying to find [log4j218b4aac2.jsn] using sun.misc.Launcher$AppClassLoader@18b4aac2 class loader.
      TRACE StatusLogger Trying to find [log4j218b4aac2.jsn] using ClassLoader.getSystemResource().
      TRACE StatusLogger Trying to find [log4j218b4aac2.xml] using context class loader sun.misc.Launcher$AppClassLoader@18b4aac2.
      TRACE StatusLogger Trying to find [log4j218b4aac2.xml] using sun.misc.Launcher$AppClassLoader@18b4aac2 class loader.
      TRACE StatusLogger Trying to find [log4j218b4aac2.xml] using sun.misc.Launcher$AppClassLoader@18b4aac2 class loader.
      TRACE StatusLogger Trying to find [log4j218b4aac2.xml] using ClassLoader.getSystemResource().
      TRACE StatusLogger Trying to find [log4j2.properties] using context class loader sun.misc.Launcher$AppClassLoader@18b4aac2.
      TRACE StatusLogger Trying to find [log4j2.properties] using sun.misc.Launcher$AppClassLoader@18b4aac2 class loader.
      TRACE StatusLogger Trying to find [log4j2.properties] using sun.misc.Launcher$AppClassLoader@18b4aac2 class loader.
      TRACE StatusLogger Trying to find [log4j2.properties] using ClassLoader.getSystemResource().
      TRACE StatusLogger Trying to find [log4j2.yml] using context class loader sun.misc.Launcher$AppClassLoader@18b4aac2.
      TRACE StatusLogger Trying to find [log4j2.yml] using sun.misc.Launcher$AppClassLoader@18b4aac2 class loader.
      TRACE StatusLogger Trying to find [log4j2.yml] using sun.misc.Launcher$AppClassLoader@18b4aac2 class loader.
      TRACE StatusLogger Trying to find [log4j2.yml] using ClassLoader.getSystemResource().
      TRACE StatusLogger Trying to find [log4j2.yaml] using context class loader sun.misc.Launcher$AppClassLoader@18b4aac2.
      TRACE StatusLogger Trying to find [log4j2.yaml] using sun.misc.Launcher$AppClassLoader@18b4aac2 class loader.
      TRACE StatusLogger Trying to find [log4j2.yaml] using sun.misc.Launcher$AppClassLoader@18b4aac2 class loader.
      TRACE StatusLogger Trying to find [log4j2.yaml] using ClassLoader.getSystemResource().
      TRACE StatusLogger Trying to find [log4j2.json] using context class loader sun.misc.Launcher$AppClassLoader@18b4aac2.
      ERROR StatusLogger No log4j2 configuration file found. Using default configuration: logging only errors to the console. Set system property 'org.apache.logging.log4j.simplelog.StatusLogger.level' to TRACE to show Log4j2 internal initialization logging.
      

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              • Assignee:
                mikaelstaldal Mikael Ståldal
                Reporter:
                mikaelstaldal Mikael Ståldal
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                • Created:
                  Updated:
                  Resolved: