Uploaded image for project: 'Maven'
  1. Maven
  2. MNG-4207

Plugins that use ArtifactResolver with http repositories AND depend on log4j run into ExceptionInInitializerError

    Details

      Description

      plugins that use log4j as a dependency and that also resolve artifacts using the ArtifactResolver to access one or more http repositories are running into a stacktrace as follows:

      [FATAL ERROR] org.apache.maven.plugin.coreit.ItMojo#execute() caused a linkage error (java.lang.ExceptionInInitializerError) and may be out-of-date. 
          Check the realms:
      [FATAL ERROR] Plugin realm = app0.child-container[org.apache.maven.its.plugins:maven-it-plugin-log4j:2.1-SNAPSHOT]
      urls[0] = file:/Users/jdcasey/.m2/repository/org/apache/maven/its/plugins/maven-it-plugin-log4j/2.1-SNAPSHOT/maven-it-plugin-log4j-2.1-SNAPSHOT.jar
      urls[1] = file:/Users/jdcasey/.m2/repository/org/codehaus/plexus/plexus-utils/1.1/plexus-utils-1.1.jar
      urls[2] = file:/Users/jdcasey/.m2/repository/log4j/log4j/1.2.14/log4j-1.2.14.jar
      [FATAL ERROR] Container realm = plexus.core
      urls[0] = file:/Users/jdcasey/apps/maven/apache-maven-2.2.0-RC3-SNAPSHOT/lib/maven-2.2.0-RC3-SNAPSHOT-uber.jar
      [INFO] ------------------------------------------------------------------------
      [ERROR] FATAL ERROR
      [INFO] ------------------------------------------------------------------------
      [INFO] null
      org/apache/log4j/Category
      [INFO] ------------------------------------------------------------------------
      [DEBUG] Trace
      java.lang.ExceptionInInitializerError
              at org.apache.maven.wagon.shared.http.AbstractHttpClientWagon.openConnectionInternal(AbstractHttpClientWagon.java:153)
              at org.apache.maven.wagon.AbstractWagon.openConnection(AbstractWagon.java:105)
              at org.apache.maven.wagon.AbstractWagon.connect(AbstractWagon.java:207)
              at org.apache.maven.artifact.manager.DefaultWagonManager.getRemoteFile(DefaultWagonManager.java:439)
              at org.apache.maven.artifact.manager.DefaultWagonManager.getArtifact(DefaultWagonManager.java:372)
              at org.apache.maven.artifact.manager.DefaultWagonManager.getArtifact(DefaultWagonManager.java:327)
              at org.apache.maven.artifact.resolver.DefaultArtifactResolver.resolve(DefaultArtifactResolver.java:216)
              at org.apache.maven.artifact.resolver.DefaultArtifactResolver.resolve(DefaultArtifactResolver.java:90)
              at org.apache.maven.plugin.coreit.ItMojo.execute(ItMojo.java:97)
              at org.apache.maven.plugin.DefaultPluginManager.executeMojo(DefaultPluginManager.java:483)
              at org.apache.maven.lifecycle.DefaultLifecycleExecutor.executeGoals(DefaultLifecycleExecutor.java:678)
              at org.apache.maven.lifecycle.DefaultLifecycleExecutor.executeGoalWithLifecycle(DefaultLifecycleExecutor.java:540)
              at org.apache.maven.lifecycle.DefaultLifecycleExecutor.executeGoal(DefaultLifecycleExecutor.java:519)
              at org.apache.maven.lifecycle.DefaultLifecycleExecutor.executeGoalAndHandleFailures(DefaultLifecycleExecutor.java:371)
              at org.apache.maven.lifecycle.DefaultLifecycleExecutor.executeTaskSegments(DefaultLifecycleExecutor.java:332)
              at org.apache.maven.lifecycle.DefaultLifecycleExecutor.execute(DefaultLifecycleExecutor.java:181)
              at org.apache.maven.DefaultMaven.doExecute(DefaultMaven.java:356)
              at org.apache.maven.DefaultMaven.execute(DefaultMaven.java:137)
              at org.apache.maven.cli.MavenCli.main(MavenCli.java:362)
              at org.apache.maven.cli.compat.CompatibleMain.main(CompatibleMain.java:41)
              at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
              at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
              at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
              at java.lang.reflect.Method.invoke(Method.java:585)
              at org.codehaus.classworlds.Launcher.launchEnhanced(Launcher.java:315)
              at org.codehaus.classworlds.Launcher.launch(Launcher.java:255)
              at org.codehaus.classworlds.Launcher.mainWithExitCode(Launcher.java:430)
              at org.codehaus.classworlds.Launcher.main(Launcher.java:375)
      Caused by: hidden.org.apache.commons.logging.LogConfigurationException: 
          hidden.org.apache.commons.logging.LogConfigurationException: No suitable Log constructor [Ljava.lang.Class;@986c47 for 
          hidden.org.apache.commons.logging.impl.Log4JLogger (Caused by java.lang.NoClassDefFoundError: org/apache/log4j/Category) 
          (Caused by hidden.org.apache.commons.logging.LogConfigurationException: No suitable Log constructor [Ljava.lang.Class;@986c47 
          for hidden.org.apache.commons.logging.impl.Log4JLogger (Caused by java.lang.NoClassDefFoundError: org/apache/log4j/Category))
              at hidden.org.apache.commons.logging.impl.LogFactoryImpl.newInstance(LogFactoryImpl.java:543)
              at hidden.org.apache.commons.logging.impl.LogFactoryImpl.getInstance(LogFactoryImpl.java:235)
              at hidden.org.apache.commons.logging.impl.LogFactoryImpl.getInstance(LogFactoryImpl.java:209)
              at hidden.org.apache.commons.logging.LogFactory.getLog(LogFactory.java:351)
              at hidden.org.apache.commons.httpclient.HttpClient.<clinit>(HttpClient.java:66)
              ... 28 more
      Caused by: hidden.org.apache.commons.logging.LogConfigurationException: No suitable Log constructor [Ljava.lang.Class;@986c47 
          for hidden.org.apache.commons.logging.impl.Log4JLogger (Caused by java.lang.NoClassDefFoundError: org/apache/log4j/Category)
              at hidden.org.apache.commons.logging.impl.LogFactoryImpl.getLogConstructor(LogFactoryImpl.java:413)
              at hidden.org.apache.commons.logging.impl.LogFactoryImpl.newInstance(LogFactoryImpl.java:529)
              ... 32 more
      Caused by: java.lang.NoClassDefFoundError: org/apache/log4j/Category
              at java.lang.Class.getDeclaredConstructors0(Native Method)
              at java.lang.Class.privateGetDeclaredConstructors(Class.java:2357)
              at java.lang.Class.getConstructor0(Class.java:2671)
              at java.lang.Class.getConstructor(Class.java:1629)
              at hidden.org.apache.commons.logging.impl.LogFactoryImpl.getLogConstructor(LogFactoryImpl.java:410)
              ... 33 more
      

      The problem seems to come from some sort of conflict between the dependencies of httpclient, which is now included in the Maven core as part of the non-lightweight http wagon, and other users of log4j (plugins, mainly). Still tracking down the exact cause of the problem, trying to determine how best to fix it. I'm including Benjamin Bentmann's original test case for this issue, since he's the one who has done most of the legwork at this point.

      instructions for the attached files (maven-it-plugin-log4j.zip and pom.xml):

      1. unpack and install the IT plugin using Maven
      2. Using the attached pom.xml as the project POM, try `mvn initialize -X`
      3. observe the stacktrace that results.

        Attachments

        1. pom.xml
          2 kB
          John Casey
        2. maven-it-plugin-log4j.zip
          2 kB
          John Casey

          Issue Links

            Activity

              People

              • Assignee:
                jdcasey John Casey
                Reporter:
                jdcasey John Casey
              • Votes:
                0 Vote for this issue
                Watchers:
                0 Start watching this issue

                Dates

                • Created:
                  Updated:
                  Resolved: