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Posted to issues@maven.apache.org by "Guillaume Nodet (Jira)" <ji...@apache.org> on 2021/11/23 07:44:00 UTC
[jira] [Comment Edited] (MNG-7160) Extension And Classloaders
[ https://issues.apache.org/jira/browse/MNG-7160?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17447817#comment-17447817 ]
Guillaume Nodet edited comment on MNG-7160 at 11/23/21, 7:43 AM:
-----------------------------------------------------------------
Core extensions loaded from {{.mvn/extensions.xml}} and plugin extensions loaded from the POM (either from {{<build><extensions>}} or from {{<plugin>...<extensions>true</extensions>}} do not have the exact same classloader. The first one have the maven-core as a parent classloader using a self-first class loading strategy and importing all the maven-core classloader packages while the one loaded as plugins have more complicated visibility rules and import some packages and some artifacts from maven-core classloader.
In short, when extensions are loaded from the POM, the {{org.codehaus.plexus.utils.xml}} package is loaded first from the _maven api_ classloader, while it's loaded from the extension's artifact list first when loaded from {{{}.mvn/extensions.xml{}}}.
In my use case, a workaround was to make sure the {{plexus-utils}} artifact is not a transitive dependency by including it with a _provided_ scope and excluding it from _transitive dependencies_ :
{code:java}
<dependencies>
<dependency>
<groupId>org.codehaus.plexus</groupId>
<artifactId>plexus-utils</artifactId>
<scope>provided</scope>
</dependency>
<dependency>
<groupId>...</groupId>
<artifactId>...</artifactId>
<exclusions>
<exclusion>
<groupId>org.codehaus.plexus</groupId>
<artifactId>plexus-utils</artifactId>
</exclusion>
</exclusions>
</dependency>
</dependencies>
{code}
However, this will only work when the extension does not actually need {{plexus-utils}} classes other than the XPP3 ones exported from the maven api realm.
There's currently no consensus about changing the way it is for compatibility reason, but this state means that it's always possible to use the same extension as a core extension or as a build extension, which I don't think is a good state.
was (Author: gnt):
Core extensions loaded from {{.mvn/extensions.xml}} and plugin extensions loaded from the POM (either from {{<build><extensions>}} or from {{<plugin>...<extensions>true</extensions>}} do not have the exact same classloader. The first one have the maven-core as a parent classloader using a self-first class loading strategy and importing all the maven-core classloader packages while the one loaded as plugins have more complicated visibility rules and import some packages and some artifacts from maven-core classloader.
In short, when extensions are loaded from the POM, the {{org.codehaus.plexus.utils.xml}} package is loaded first from the _maven api_ classloader, while it's loaded from the extension's artifact list first when loaded from {{.mvn/extensions.xml}}.
In my use case, a workaround was to make sure the {{plexus-utils}} artifact is not a transitive dependency by including it with a _provided_ scope and excluding it from transitive dependencies_:
{code}
<dependencies>
<dependency>
<groupId>org.codehaus.plexus</groupId>
<artifactId>plexus-utils</artifactId>
<scope>provided</scope>
</dependency>
<dependency>
<groupId>...</groupId>
<artifactId>...</artifactId>
<exclusions>
<exclusion>
<groupId>org.codehaus.plexus</groupId>
<artifactId>plexus-utils</artifactId>
</exclusion>
</exclusions>
</dependency>
</dependencies>
{code}
However, this will only work when the extension does not actually need {{plexus-utils}} classes other than the XPP3 ones exported from the maven api realm.
There's currently no consensus about changing the way it is for compatibility reason, but this state means that it's always possible to use the same extension as a core extension or as a build extension, which I don't think is a good state.
> Extension And Classloaders
> --------------------------
>
> Key: MNG-7160
> URL: https://issues.apache.org/jira/browse/MNG-7160
> Project: Maven
> Issue Type: Bug
> Affects Versions: 3.6.2, 3.8.1
> Reporter: Nick Cross
> Assignee: Guillaume Nodet
> Priority: Major
>
> I have a project that we use for all of our internal Red Hat builds (although primarily through its CLI mode hence not noticing this until [https://github.com/release-engineering/pom-manipulation-ext/issues/832] was submitted in the community). This project creates an extension (lib/ext style) but trying to use it as a ".mvn/extensions.xml" it _seems_ to get a classloader problem as _I think _the Maven Model/Plugin objects are created within a different classloader which means when the Plugin configuration is retrieved and cast to a Xpp3Dom object it fails. Is there some configuration we are missing or is there a problem in how the classloading in Maven for core extensions is working when using Xpp3Dom ?
> An reproducer branch is [https://github.com/rnc/pom-manipulation-ext/tree/ISSUE832]
> (Simply build and install the project, then use it on any simple Maven project with an extensions.xml with the command e.g. "mvn -X -DversionSuffix=redhat-1" )
> An example log is below:
> {noformat}
> Apache Maven 3.8.1 (05c21c65bdfed0f71a2f2ada8b84da59348c4c5d)
> Maven home: /home/rnc/Software/apache-maven-3.8.1
> Java version: 11.0.11, vendor: Red Hat, Inc., runtime: /usr/lib/jvm/java-11-openjdk-11.0.11.0.9-2.fc33.x86_64
> Default locale: en_GB, platform encoding: UTF-8
> OS name: "linux", version: "5.11.14-200.fc33.x86_64", arch: "amd64", family: "unix"
> [DEBUG] Reading global settings from /home/rnc/Software/apache-maven-3.8.1/conf/settings.xml
> [DEBUG] Reading user settings from /home/rnc/.m2/settings.xml
> [DEBUG] Using manager EnhancedLocalRepositoryManager with priority 10.0 for /home/rnc/.m2/repository
> [DEBUG] Using mirror maven-default-http-blocker (http://0.0.0.0/) for repository.jboss.org (http://repository.jboss.org/maven2).
> [DEBUG] Using mirror maven-default-http-blocker (http://0.0.0.0/) for snapshots.jboss.org (http://snapshots.jboss.org/maven2).
> [DEBUG] Using mirror maven-default-http-blocker (http://0.0.0.0/) for oss.sonatype.org/jboss-snapshots (http://oss.sonatype.org/content/repositories/jboss-snapshots).
> [DEBUG] Dependency collection stats {ConflictMarker.analyzeTime=644417, ConflictMarker.markTime=145101, ConflictMarker.nodeCount=11, ConflictIdSorter.graphTime=429885, ConflictIdSorter.topsortTime=359266, ConflictIdSorter.conflictIdCount=10, ConflictIdSorter.conflictIdCycleCount=0, ConflictResolver.totalTime=2854763, ConflictResolver.conflictItemCount=11, DefaultDependencyCollector.collectTime=122702048, DefaultDependencyCollector.transformTime=6173804}
> [DEBUG] org.commonjava.maven.ext:pom-manipulation-ext:jar:4.4-SNAPSHOT
> [DEBUG] javax.inject:javax.inject:jar:1:compile
> [DEBUG] org.eclipse.sisu:org.eclipse.sisu.plexus:jar:0.3.4:compile
> [DEBUG] javax.enterprise:cdi-api:jar:1.0:compile
> [DEBUG] javax.annotation:jsr250-api:jar:1.0:compile
> [DEBUG] org.eclipse.sisu:org.eclipse.sisu.inject:jar:0.3.4:compile
> [DEBUG] org.codehaus.plexus:plexus-component-annotations:jar:1.5.5:compile
> [DEBUG] org.codehaus.plexus:plexus-classworlds:jar:2.5.2:compile
> [DEBUG] org.codehaus.plexus:plexus-utils:jar:3.1.0:compile (version managed from default)
> [DEBUG] org.slf4j:slf4j-api:jar:1.7.30:compile
> [DEBUG] Populating class realm coreExtension>org.commonjava.maven.ext:pom-manipulation-ext:4.4-SNAPSHOT
> [DEBUG] Included /home/rnc/.m2/repository/org/commonjava/maven/ext/pom-manipulation-ext/4.4-SNAPSHOT/pom-manipulation-ext-4.4-SNAPSHOT.jar
> [DEBUG] Included /home/rnc/.m2/repository/javax/enterprise/cdi-api/1.0/cdi-api-1.0.jar
> [DEBUG] Included /home/rnc/.m2/repository/org/eclipse/sisu/org.eclipse.sisu.inject/0.3.4/org.eclipse.sisu.inject-0.3.4.jar
> [DEBUG] Included /home/rnc/.m2/repository/org/codehaus/plexus/plexus-component-annotations/1.5.5/plexus-component-annotations-1.5.5.jar
> [DEBUG] Included /home/rnc/.m2/repository/org/codehaus/plexus/plexus-utils/3.1.0/plexus-utils-3.1.0.jar
> [DEBUG] Populating class realm maven.ext
> [INFO] Running Maven Manipulation Extension (PME) 4.4-SNAPSHOT ( SHA: 305cdb0d )
> [DEBUG] Created new class realm maven.api
> [DEBUG] Importing foreign packages into class realm maven.api
> [DEBUG] Imported: javax.annotation.* < maven.ext
> [DEBUG] Imported: javax.annotation.security.* < maven.ext
> [DEBUG] Imported: javax.enterprise.inject.* < maven.ext
> [DEBUG] Imported: javax.enterprise.util.* < maven.ext
> [DEBUG] Imported: javax.inject.* < maven.ext
> [DEBUG] Imported: org.apache.maven.* < maven.ext
> [DEBUG] Imported: org.apache.maven.artifact < maven.ext
> [DEBUG] Imported: org.apache.maven.classrealm < maven.ext
> [DEBUG] Imported: org.apache.maven.cli < maven.ext
> [DEBUG] Imported: org.apache.maven.configuration < maven.ext
> [DEBUG] Imported: org.apache.maven.exception < maven.ext
> [DEBUG] Imported: org.apache.maven.execution < maven.ext
> [DEBUG] Imported: org.apache.maven.execution.scope < maven.ext
> [DEBUG] Imported: org.apache.maven.lifecycle < maven.ext
> [DEBUG] Imported: org.apache.maven.model < maven.ext
> [DEBUG] Imported: org.apache.maven.monitor < maven.ext
> [DEBUG] Imported: org.apache.maven.plugin < maven.ext
> [DEBUG] Imported: org.apache.maven.profiles < maven.ext
> [DEBUG] Imported: org.apache.maven.project < maven.ext
> [DEBUG] Imported: org.apache.maven.reporting < maven.ext
> [DEBUG] Imported: org.apache.maven.repository < maven.ext
> [DEBUG] Imported: org.apache.maven.rtinfo < maven.ext
> [DEBUG] Imported: org.apache.maven.settings < maven.ext
> [DEBUG] Imported: org.apache.maven.toolchain < maven.ext
> [DEBUG] Imported: org.apache.maven.usability < maven.ext
> [DEBUG] Imported: org.apache.maven.wagon.* < maven.ext
> [DEBUG] Imported: org.apache.maven.wagon.authentication < maven.ext
> [DEBUG] Imported: org.apache.maven.wagon.authorization < maven.ext
> [DEBUG] Imported: org.apache.maven.wagon.events < maven.ext
> [DEBUG] Imported: org.apache.maven.wagon.observers < maven.ext
> [DEBUG] Imported: org.apache.maven.wagon.proxy < maven.ext
> [DEBUG] Imported: org.apache.maven.wagon.repository < maven.ext
> [DEBUG] Imported: org.apache.maven.wagon.resource < maven.ext
> [DEBUG] Imported: org.codehaus.classworlds < maven.ext
> [DEBUG] Imported: org.codehaus.plexus.* < maven.ext
> [DEBUG] Imported: org.codehaus.plexus.classworlds < maven.ext
> [DEBUG] Imported: org.codehaus.plexus.component < maven.ext
> [DEBUG] Imported: org.codehaus.plexus.configuration < maven.ext
> [DEBUG] Imported: org.codehaus.plexus.container < maven.ext
> [DEBUG] Imported: org.codehaus.plexus.context < maven.ext
> [DEBUG] Imported: org.codehaus.plexus.lifecycle < maven.ext
> [DEBUG] Imported: org.codehaus.plexus.logging < maven.ext
> [DEBUG] Imported: org.codehaus.plexus.personality < maven.ext
> [DEBUG] Imported: org.codehaus.plexus.util.xml.* < maven.ext
> [DEBUG] Imported: org.codehaus.plexus.util.xml.Xpp3Dom < maven.ext
> [DEBUG] Imported: org.codehaus.plexus.util.xml.pull.XmlPullParser < maven.ext
> [DEBUG] Imported: org.codehaus.plexus.util.xml.pull.XmlPullParserException < maven.ext
> [DEBUG] Imported: org.codehaus.plexus.util.xml.pull.XmlSerializer < maven.ext
> [DEBUG] Imported: org.commonjava.maven.ext.* < maven.ext
> [DEBUG] Imported: org.eclipse.aether.* < maven.ext
> [DEBUG] Imported: org.eclipse.aether.artifact < maven.ext
> [DEBUG] Imported: org.eclipse.aether.collection < maven.ext
> [DEBUG] Imported: org.eclipse.aether.deployment < maven.ext
> [DEBUG] Imported: org.eclipse.aether.graph < maven.ext
> [DEBUG] Imported: org.eclipse.aether.impl < maven.ext
> [DEBUG] Imported: org.eclipse.aether.installation < maven.ext
> [DEBUG] Imported: org.eclipse.aether.internal.impl < maven.ext
> [DEBUG] Imported: org.eclipse.aether.metadata < maven.ext
> [DEBUG] Imported: org.eclipse.aether.repository < maven.ext
> [DEBUG] Imported: org.eclipse.aether.resolution < maven.ext
> [DEBUG] Imported: org.eclipse.aether.spi < maven.ext
> [DEBUG] Imported: org.eclipse.aether.transfer < maven.ext
> [DEBUG] Imported: org.eclipse.aether.version < maven.ext
> [DEBUG] Imported: org.fusesource.jansi.* < maven.ext
> [DEBUG] Imported: org.slf4j.* < maven.ext
> [DEBUG] Imported: org.slf4j.event.* < maven.ext
> [DEBUG] Imported: org.slf4j.helpers.* < maven.ext
> [DEBUG] Imported: org.slf4j.spi.* < maven.ext
> [DEBUG] Populating class realm maven.api
> [INFO] Error stacktraces are turned on.
> [DEBUG] Message scheme: color
> [DEBUG] Message styles: debug info warning error success failure strong mojo project
> [DEBUG] Reading global settings from /home/rnc/Software/apache-maven-3.8.1/conf/settings.xml
> [DEBUG] Reading user settings from /home/rnc/.m2/settings.xml
> [DEBUG] Reading global toolchains from /home/rnc/Software/apache-maven-3.8.1/conf/toolchains.xml
> [DEBUG] Reading user toolchains from /home/rnc/.m2/toolchains.xml
> [DEBUG] Using local repository at /home/rnc/.m2/repository
> [DEBUG] Using manager EnhancedLocalRepositoryManager with priority 10.0 for /home/rnc/.m2/repository
> [DEBUG] Initialising ManipulationManager with user properties {versionSuffix=redhat-1}
> [DEBUG] Examining for deprecated properties for versionSuffix
> [DEBUG] Configured to use Maven locations:
> SimpleLocation [uri=file:/home/rnc/.m2/repository/]
> SimpleLocation [uri=https://repo.maven.apache.org/maven2]
> [DEBUG] Initialising manipulator FinalGroovyManipulator
> [DEBUG] Initialising manipulator XMLManipulator
> [DEBUG] Initialising manipulator JSONManipulator
> [DEBUG] Initialising manipulator BOMBuilderManipulator
> [DEBUG] Initialising manipulator DistributionEnforcingManipulator
> [DEBUG] Initialising manipulator ProjectVersionEnforcingManipulator
> [DEBUG] Initialising manipulator RepositoryInjectionManipulator
> [DEBUG] Initialising manipulator PluginInjectingManipulator
> [DEBUG] Initialising manipulator ProfileRemovalManipulator
> [DEBUG] Initialising manipulator NexusStagingMavenPluginRemovalManipulator
> [DEBUG] Initialising manipulator PluginRemovalManipulator
> [DEBUG] Initialising manipulator DependencyRemovalManipulator
> [DEBUG] Initialising manipulator RepoAndReportingRemovalManipulator
> [DEBUG] Initialising manipulator DependencyManipulator
> [DEBUG] Initialising manipulator PluginManipulator
> [DEBUG] Initialising manipulator PropertyManipulator
> [DEBUG] Initialising manipulator ParentInjectionManipulator
> [DEBUG] Initialising manipulator ProjectVersioningManipulator
> [DEBUG] Initialising manipulator RESTCollector
> [DEBUG] Initialising manipulator RelocationManipulator
> [DEBUG] Initialising manipulator SuffixManipulator
> [DEBUG] Initialising manipulator ProfileInjectionManipulator
> [DEBUG] Initialising manipulator RESTBOMCollector
> [DEBUG] Initialising manipulator RangeResolver
> [DEBUG] Initialising manipulator InitialGroovyManipulator
> [DEBUG] PEEK: /home/rnc/Work/PME/pom-manipulation-ext/integration-test/target/it-ext/simple-numeric-with-maven-extensions/pom.xml
> [DEBUG] Setting top level parent to /home/rnc/Work/PME/pom-manipulation-ext/integration-test/target/it-ext/simple-numeric-with-maven-extensions/pom.xml :: org.commonjava.maven.ext.integration-test:simple-numeric-override:6.1.0.Final-redhat-01
> [DEBUG] Found a standalone pom /home/rnc/Work/PME/pom-manipulation-ext/integration-test/target/it-ext/simple-numeric-with-maven-extensions/pom.xml :: org.commonjava.maven.ext.integration-test:simple-numeric-override:6.1.0.Final-redhat-01
> [DEBUG] Setting execution root to org.commonjava.maven.ext.integration-test:simple-numeric-override:6.1.0.Final-redhat-01 [pom=/home/rnc/Work/PME/pom-manipulation-ext/integration-test/target/it-ext/simple-numeric-with-maven-extensions/pom.xml] with file /home/rnc/Work/PME/pom-manipulation-ext/integration-test/target/it-ext/simple-numeric-with-maven-extensions/pom.xml and is the inheritance root.
> [DEBUG] Explicitly activating []
> [DEBUG] Will not scan all profiles and returning active profiles of []
> [INFO] Running manipulator org.commonjava.maven.ext.core.impl.InitialGroovyManipulator
> [DEBUG] InitialGroovyManipulator: Nothing to do!
> [INFO] Running manipulator org.commonjava.maven.ext.core.impl.RangeResolver
> [INFO] Running manipulator org.commonjava.maven.ext.core.impl.RESTBOMCollector
> [DEBUG] RESTBOMCollector: Nothing to do!
> [INFO] Running manipulator org.commonjava.maven.ext.core.impl.ProfileInjectionManipulator
> [DEBUG] ProfileInjectionManipulator: Nothing to do!
> [INFO] Running manipulator org.commonjava.maven.ext.core.impl.SuffixManipulator
> [DEBUG] SuffixManipulator: Nothing to do!
> [INFO] Running manipulator org.commonjava.maven.ext.core.impl.RelocationManipulator
> [DEBUG] RelocationManipulator: Nothing to do!
> [INFO] Running manipulator org.commonjava.maven.ext.core.impl.RESTCollector
> [DEBUG] RESTCollector: Nothing to do!
> [INFO] Running manipulator org.commonjava.maven.ext.core.impl.ProjectVersioningManipulator
> [INFO] Version Manipulator: Calculating the necessary versioning changes.
> [DEBUG] Got the following original version: 6.1.0.Final-redhat-01 for groupId:artifactId org.commonjava.maven.ext.integration-test:simple-numeric-override
> [DEBUG] Got the following version suffixes:
> Static: redhat-1
> Incremental: null
> [DEBUG] Got the following version override: null
> [DEBUG] Applying suffix: redhat-1 to version 6.1.0.Final-redhat-01
> [DEBUG] Caching version against project org.commonjava.maven.ext.integration-test:simple-numeric-override:6.1.0.Final-redhat-01 with parent null and modified version 6.1.0.Final-redhat-1
> [DEBUG] Syncing projects within reactor...
> [DEBUG] Using pattern: '(\Q6.1.0\E([.\-_]0)*)?[.\-_]\QFinal-redhat\E[.\-_](\d+)' to find compatible versions from metadata.
> [DEBUG] Found highest matching build number 1 from set [6.1.0.Final-redhat-1]
> [DEBUG] Returning padding of 1
> [DEBUG] org.commonjava.maven.ext.integration-test:simple-numeric-override:6.1.0.Final-redhat-01 has updated version: 6.1.0.Final-redhat-1. Marking for rewrite.
> [DEBUG] Examining org.commonjava.maven.ext.integration-test:simple-numeric-override:6.1.0.Final-redhat-01 [pom=/home/rnc/Work/PME/pom-manipulation-ext/integration-test/target/it-ext/simple-numeric-with-maven-extensions/pom.xml] for applyVersioningChanges.
> [INFO] Looking for new version: org.commonjava.maven.ext.integration-test:simple-numeric-override:6.1.0.Final-redhat-01 (found: 6.1.0.Final-redhat-1)
> [INFO] Changed main version in org.commonjava.maven.ext.integration-test:simple-numeric-override:6.1.0.Final-redhat-1 [pom=/home/rnc/Work/PME/pom-manipulation-ext/integration-test/target/it-ext/simple-numeric-with-maven-extensions/pom.xml]
> [INFO] Running manipulator org.commonjava.maven.ext.core.impl.ParentInjectionManipulator
> [DEBUG] ParentInjectionManipulator: Nothing to do!
> [INFO] Running manipulator org.commonjava.maven.ext.core.impl.PropertyManipulator
> [DEBUG] PropertyManipulator: Nothing to do!
> [INFO] Running manipulator org.commonjava.maven.ext.core.impl.PluginManipulator
> [DEBUG] PluginManipulator: Nothing to do!
> [INFO] Running manipulator org.commonjava.maven.ext.core.impl.DependencyManipulator
> [DEBUG] DependencyManipulator: Nothing to do!
> [INFO] Running manipulator org.commonjava.maven.ext.core.impl.RepoAndReportingRemovalManipulator
> [DEBUG] RepoAndReportingRemovalManipulator: Nothing to do!
> [INFO] Running manipulator org.commonjava.maven.ext.core.impl.DependencyRemovalManipulator
> [DEBUG] DependencyRemovalManipulator: Nothing to do!
> [INFO] Running manipulator org.commonjava.maven.ext.core.impl.PluginRemovalManipulator
> [DEBUG] PluginRemovalManipulator: Nothing to do!
> [INFO] Running manipulator org.commonjava.maven.ext.core.impl.NexusStagingMavenPluginRemovalManipulator
> [DEBUG] Applying plugin changes to: org.commonjava.maven.ext.integration-test:simple-numeric-override
> [INFO] Running manipulator org.commonjava.maven.ext.core.impl.ProfileRemovalManipulator
> [DEBUG] ProfileRemovalManipulator: Nothing to do!
> [INFO] Running manipulator org.commonjava.maven.ext.core.impl.PluginInjectingManipulator
> [INFO] Running manipulator org.commonjava.maven.ext.core.impl.RepositoryInjectionManipulator
> [DEBUG] RepositoryInjectionManipulator: Nothing to do!
> [INFO] Running manipulator org.commonjava.maven.ext.core.impl.ProjectVersionEnforcingManipulator
> [INFO] Running manipulator org.commonjava.maven.ext.core.impl.DistributionEnforcingManipulator
> [DEBUG] Distribution skip-flag enforcement is disabled.
> [INFO] Running manipulator org.commonjava.maven.ext.core.impl.BOMBuilderManipulator
> [DEBUG] BOMBuilderManipulator: Nothing to do!
> [INFO] Running manipulator org.commonjava.maven.ext.core.impl.JSONManipulator
> [DEBUG] JSONManipulator: Nothing to do!
> [INFO] Running manipulator org.commonjava.maven.ext.core.impl.XMLManipulator
> [DEBUG] XMLManipulator: Nothing to do!
> [INFO] Running manipulator org.commonjava.maven.ext.core.impl.FinalGroovyManipulator
> [DEBUG] FinalGroovyManipulator: Nothing to do!
> [INFO] Maven-Manipulation-Extension: Rewrite changed: [org.commonjava.maven.ext.integration-test:simple-numeric-override:6.1.0.Final-redhat-1 [pom=/home/rnc/Work/PME/pom-manipulation-ext/integration-test/target/it-ext/simple-numeric-with-maven-extensions/pom.xml]]
> [DEBUG] org.commonjava.maven.ext.integration-test:simple-numeric-override:6.1.0.Final-redhat-1 [pom=/home/rnc/Work/PME/pom-manipulation-ext/integration-test/target/it-ext/simple-numeric-with-maven-extensions/pom.xml] modified! Rewriting.
> ### JDOMModelConverter::Plugin::Classloader : ClassRealm[plexus.core, parent: null] and class org.codehaus.plexus.util.xml.Xpp3Dom and 1517266286
> ### JDOMModelConverter::Plugin::Classloader : ClassRealm[coreExtension>org.commonjava.maven.ext:pom-manipulation-ext:4.4-SNAPSHOT, parent: ClassRealm[plexus.core, parent: null]] and class org.codehaus.plexus.util.xml.Xpp3Dom and 1947683363
> ### instanceof false and now local xpp3dom true
> [ERROR] Extension failure
> java.lang.ClassCastException: class org.codehaus.plexus.util.xml.Xpp3Dom cannot be cast to class org.codehaus.plexus.util.xml.Xpp3Dom (org.codehaus.plexus.util.xml.Xpp3Dom is in unnamed module of loader org.codehaus.plexus.classworlds.realm.ClassRealm @f6f4d33; org.codehaus.plexus.util.xml.Xpp3Dom is in unnamed module of loader org.codehaus.plexus.classworlds.realm.ClassRealm @5b69fd74)
> at org.commonjava.maven.ext.common.jdom.JDOMModelConverter.updatePlugin (JDOMModelConverter.java:1531)
> at org.commonjava.maven.ext.common.jdom.JDOMModelConverter.iteratePlugin (JDOMModelConverter.java:540)
> at org.commonjava.maven.ext.common.jdom.JDOMModelConverter.updatePluginManagement (JDOMModelConverter.java:1566)
> at org.commonjava.maven.ext.common.jdom.JDOMModelConverter.updateBuild (JDOMModelConverter.java:1035)
> at org.commonjava.maven.ext.common.jdom.JDOMModelConverter.updateModel (JDOMModelConverter.java:1394)
> at org.commonjava.maven.ext.common.jdom.JDOMModelConverter.update (JDOMModelConverter.java:1818)
> at org.commonjava.maven.ext.common.jdom.JDOMModelConverter.convertModelToJDOM (JDOMModelConverter.java:52)
> at org.commonjava.maven.ext.io.PomIO.write (PomIO.java:282)
> at org.commonjava.maven.ext.io.PomIO.rewritePOMs (PomIO.java:218)
> at org.commonjava.maven.ext.core.ManipulationManager.scanAndApply (ManipulationManager.java:211)
> at org.commonjava.maven.ext.manip.ManipulatingEventSpy.onEvent (ManipulatingEventSpy.java:117)
> at org.apache.maven.eventspy.internal.EventSpyDispatcher.onEvent (EventSpyDispatcher.java:104)
> at org.apache.maven.eventspy.internal.EventSpyExecutionListener.projectDiscoveryStarted (EventSpyExecutionListener.java:47)
> at org.apache.maven.lifecycle.internal.DefaultExecutionEventCatapult.fire (DefaultExecutionEventCatapult.java:57)
> at org.apache.maven.lifecycle.internal.DefaultExecutionEventCatapult.fire (DefaultExecutionEventCatapult.java:42)
> at org.apache.maven.DefaultMaven.doExecute (DefaultMaven.java:217)
> at org.apache.maven.DefaultMaven.doExecute (DefaultMaven.java:192)
> at org.apache.maven.DefaultMaven.execute (DefaultMaven.java:105)
> at org.apache.maven.cli.MavenCli.execute (MavenCli.java:957)
> at org.apache.maven.cli.MavenCli.doMain (MavenCli.java:289)
> at org.apache.maven.cli.MavenCli.main (MavenCli.java:193)
> at jdk.internal.reflect.NativeMethodAccessorImpl.invoke0 (Native Method)
> at jdk.internal.reflect.NativeMethodAccessorImpl.invoke (NativeMethodAccessorImpl.java:62)
> at jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke (DelegatingMethodAccessorImpl.java:43)
> at java.lang.reflect.Method.invoke (Method.java:566)
> at org.codehaus.plexus.classworlds.launcher.Launcher.launchEnhanced (Launcher.java:282)
> at org.codehaus.plexus.classworlds.launcher.Launcher.launch (Launcher.java:225)
> at org.codehaus.plexus.classworlds.launcher.Launcher.mainWithExitCode (Launcher.java:406)
> at org.codehaus.plexus.classworlds.launcher.Launcher.main (Launcher.java:347)
> [INFO] Scanning for projects...
> [DEBUG] Extension realms for project org.commonjava.maven.ext.integration-test:simple-numeric-override:jar:6.1.0.Final-redhat-01: (none)
> [DEBUG] Looking up lifecycle mappings for packaging jar from ClassRealm[maven.ext, parent: ClassRealm[plexus.core, parent: null]]
> [ERROR] POM Manipulation failed: Caught runtime exception: class org.codehaus.plexus.util.xml.Xpp3Dom cannot be cast to class org.codehaus.plexus.util.xml.Xpp3Dom (org.codehaus.plexus.util.xml.Xpp3Dom is in unnamed module of loader org.codehaus.plexus.classworlds.realm.ClassRealm @f6f4d33; org.codehaus.plexus.util.xml.Xpp3Dom is in unnamed module of loader org.codehaus.plexus.classworlds.realm.ClassRealm @5b69fd74) -> [Help 1]
> org.apache.maven.MavenExecutionException: POM Manipulation failed: Caught runtime exception
> at org.commonjava.maven.ext.manip.ManipulatingLifeCycleParticipant.afterProjectsRead (ManipulatingLifeCycleParticipant.java:48)
> at org.apache.maven.DefaultMaven.doExecute (DefaultMaven.java:264)
> at org.apache.maven.DefaultMaven.doExecute (DefaultMaven.java:192)
> at org.apache.maven.DefaultMaven.execute (DefaultMaven.java:105)
> at org.apache.maven.cli.MavenCli.execute (MavenCli.java:957)
> at org.apache.maven.cli.MavenCli.doMain (MavenCli.java:289)
> at org.apache.maven.cli.MavenCli.main (MavenCli.java:193)
> at jdk.internal.reflect.NativeMethodAccessorImpl.invoke0 (Native Method)
> at jdk.internal.reflect.NativeMethodAccessorImpl.invoke (NativeMethodAccessorImpl.java:62)
> at jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke (DelegatingMethodAccessorImpl.java:43)
> at java.lang.reflect.Method.invoke (Method.java:566)
> at org.codehaus.plexus.classworlds.launcher.Launcher.launchEnhanced (Launcher.java:282)
> at org.codehaus.plexus.classworlds.launcher.Launcher.launch (Launcher.java:225)
> at org.codehaus.plexus.classworlds.launcher.Launcher.mainWithExitCode (Launcher.java:406)
> at org.codehaus.plexus.classworlds.launcher.Launcher.main (Launcher.java:347)
> Caused by: org.commonjava.maven.ext.common.ManipulationException: Caught runtime exception
> at org.commonjava.maven.ext.manip.ManipulatingEventSpy.onEvent (ManipulatingEventSpy.java:143)
> at org.apache.maven.eventspy.internal.EventSpyDispatcher.onEvent (EventSpyDispatcher.java:104)
> at org.apache.maven.eventspy.internal.EventSpyExecutionListener.projectDiscoveryStarted (EventSpyExecutionListener.java:47)
> at org.apache.maven.lifecycle.internal.DefaultExecutionEventCatapult.fire (DefaultExecutionEventCatapult.java:57)
> at org.apache.maven.lifecycle.internal.DefaultExecutionEventCatapult.fire (DefaultExecutionEventCatapult.java:42)
> at org.apache.maven.DefaultMaven.doExecute (DefaultMaven.java:217)
> at org.apache.maven.DefaultMaven.doExecute (DefaultMaven.java:192)
> at org.apache.maven.DefaultMaven.execute (DefaultMaven.java:105)
> at org.apache.maven.cli.MavenCli.execute (MavenCli.java:957)
> at org.apache.maven.cli.MavenCli.doMain (MavenCli.java:289)
> at org.apache.maven.cli.MavenCli.main (MavenCli.java:193)
> at jdk.internal.reflect.NativeMethodAccessorImpl.invoke0 (Native Method)
> at jdk.internal.reflect.NativeMethodAccessorImpl.invoke (NativeMethodAccessorImpl.java:62)
> at jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke (DelegatingMethodAccessorImpl.java:43)
> at java.lang.reflect.Method.invoke (Method.java:566)
> at org.codehaus.plexus.classworlds.launcher.Launcher.launchEnhanced (Launcher.java:282)
> at org.codehaus.plexus.classworlds.launcher.Launcher.launch (Launcher.java:225)
> at org.codehaus.plexus.classworlds.launcher.Launcher.mainWithExitCode (Launcher.java:406)
> at org.codehaus.plexus.classworlds.launcher.Launcher.main (Launcher.java:347)
> Caused by: java.lang.ClassCastException: class org.codehaus.plexus.util.xml.Xpp3Dom cannot be cast to class org.codehaus.plexus.util.xml.Xpp3Dom (org.codehaus.plexus.util.xml.Xpp3Dom is in unnamed module of loader org.codehaus.plexus.classworlds.realm.ClassRealm @f6f4d33; org.codehaus.plexus.util.xml.Xpp3Dom is in unnamed module of loader org.codehaus.plexus.classworlds.realm.ClassRealm @5b69fd74)
> at org.commonjava.maven.ext.common.jdom.JDOMModelConverter.updatePlugin (JDOMModelConverter.java:1531)
> at org.commonjava.maven.ext.common.jdom.JDOMModelConverter.iteratePlugin (JDOMModelConverter.java:540)
> at org.commonjava.maven.ext.common.jdom.JDOMModelConverter.updatePluginManagement (JDOMModelConverter.java:1566)
> at org.commonjava.maven.ext.common.jdom.JDOMModelConverter.updateBuild (JDOMModelConverter.java:1035)
> at org.commonjava.maven.ext.common.jdom.JDOMModelConverter.updateModel (JDOMModelConverter.java:1394)
> at org.commonjava.maven.ext.common.jdom.JDOMModelConverter.update (JDOMModelConverter.java:1818)
> at org.commonjava.maven.ext.common.jdom.JDOMModelConverter.convertModelToJDOM (JDOMModelConverter.java:52)
> at org.commonjava.maven.ext.io.PomIO.write (PomIO.java:282)
> at org.commonjava.maven.ext.io.PomIO.rewritePOMs (PomIO.java:218)
> at org.commonjava.maven.ext.core.ManipulationManager.scanAndApply (ManipulationManager.java:211)
> at org.commonjava.maven.ext.manip.ManipulatingEventSpy.onEvent (ManipulatingEventSpy.java:117)
> at org.apache.maven.eventspy.internal.EventSpyDispatcher.onEvent (EventSpyDispatcher.java:104)
> at org.apache.maven.eventspy.internal.EventSpyExecutionListener.projectDiscoveryStarted (EventSpyExecutionListener.java:47)
> at org.apache.maven.lifecycle.internal.DefaultExecutionEventCatapult.fire (DefaultExecutionEventCatapult.java:57)
> at org.apache.maven.lifecycle.internal.DefaultExecutionEventCatapult.fire (DefaultExecutionEventCatapult.java:42)
> at org.apache.maven.DefaultMaven.doExecute (DefaultMaven.java:217)
> at org.apache.maven.DefaultMaven.doExecute (DefaultMaven.java:192)
> at org.apache.maven.DefaultMaven.execute (DefaultMaven.java:105)
> at org.apache.maven.cli.MavenCli.execute (MavenCli.java:957)
> at org.apache.maven.cli.MavenCli.doMain (MavenCli.java:289)
> at org.apache.maven.cli.MavenCli.main (MavenCli.java:193)
> at jdk.internal.reflect.NativeMethodAccessorImpl.invoke0 (Native Method)
> at jdk.internal.reflect.NativeMethodAccessorImpl.invoke (NativeMethodAccessorImpl.java:62)
> at jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke (DelegatingMethodAccessorImpl.java:43)
> at java.lang.reflect.Method.invoke (Method.java:566)
> at org.codehaus.plexus.classworlds.launcher.Launcher.launchEnhanced (Launcher.java:282)
> at org.codehaus.plexus.classworlds.launcher.Launcher.launch (Launcher.java:225)
> at org.codehaus.plexus.classworlds.launcher.Launcher.mainWithExitCode (Launcher.java:406)
> at org.codehaus.plexus.classworlds.launcher.Launcher.main (Launcher.java:347)
> [ERROR]
> [ERROR]
> [ERROR] For more information about the errors and possible solutions, please read the following articles:
> [ERROR] [Help 1] http://cwiki.apache.org/confluence/display/MAVEN/MavenExecutionException
> {noformat}
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