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https://issues.apache.org/jira/browse/MNG-7375?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17768099#comment-17768099
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ASF GitHub Bot commented on MNG-7375:
-------------------------------------
gnodet commented on PR #645:
URL: https://github.com/apache/maven/pull/645#issuecomment-1731766970
@kwin I've rebased the PR to fix all conflicts, I haven't done an in-depth
review yet, but I wonder about adding yet another module for basically a single
service. I wonder if we could implement this service natively for the v4 api:
so the service interface in `org.apache.maven.api.services` and the
implementation inside the existing maven-repository-metadata module...
> Potential NPE in o.a.m.artifact.repository.metadata.Metadata.merge(...) with
> invalid/incomplete plugin metadata
> ---------------------------------------------------------------------------------------------------------------
>
> Key: MNG-7375
> URL: https://issues.apache.org/jira/browse/MNG-7375
> Project: Maven
> Issue Type: Improvement
> Components: Artifacts and Repositories
> Affects Versions: 3.8.4
> Reporter: Konrad Windszus
> Priority: Major
> Attachments: NEXUS-30749 - Broken groupId metadata and follow-up NPE
> during
> org.sonatype.nexus.maven.staging.deploy.strategy.AbstractDeployStrategy.deployUp
> - Sonatype JIRA.pdf
>
>
> Currently the metadata at
> https://repository.apache.org/service/local/repositories/snapshots/content/org/apache/jackrabbit/maven-metadata.xml
> contains an invalid entry without a prefix:
> {code:xml}
> <metadata>
> <plugins>
> <plugin>
> <name>Apache Jackrabbit FileVault - Package Maven Plugin</name>
> <prefix>filevault-package</prefix>
> <artifactId>filevault-package-maven-plugin</artifactId>
> </plugin>
> <plugin>
> <name>filevault-package-maven-plugin</name>
> <artifactId>filevault-package-maven-plugin</artifactId>
> </plugin>
> </plugins>
> </metadata>
> {code}
> This leads to an NPE when trying to deploy a new version with
> {{org.apache.maven.artifact.deployer.DefaultArtifactDeployer.deploy(...)}}:
> {noformat}
> Caused by: java.lang.NullPointerException
> at org.apache.maven.artifact.repository.metadata.Metadata.merge
> (Metadata.java:276)
> at
> org.apache.maven.artifact.repository.metadata.AbstractRepositoryMetadata.updateRepositoryMetadata
> (AbstractRepositoryMetadata.java:121)
> at
> org.apache.maven.artifact.repository.metadata.AbstractRepositoryMetadata.storeInLocalRepository
> (AbstractRepositoryMetadata.java:67)
> at org.apache.maven.artifact.repository.metadata.MetadataBridge.merge
> (MetadataBridge.java:65)
> at org.eclipse.aether.internal.impl.DefaultDeployer.upload
> (DefaultDeployer.java:433)
> at org.eclipse.aether.internal.impl.DefaultDeployer.deploy
> (DefaultDeployer.java:321)
> at org.eclipse.aether.internal.impl.DefaultDeployer.deploy
> (DefaultDeployer.java:213)
> at org.eclipse.aether.internal.impl.DefaultRepositorySystem.deploy
> (DefaultRepositorySystem.java:386)
> at org.apache.maven.artifact.deployer.DefaultArtifactDeployer.deploy
> (DefaultArtifactDeployer.java:142)
> {noformat}
> Although this happened in the context of using
> "[org.sonatype.plugins:nexus-staging-maven-plugin|https://github.com/sonatype/nexus-maven-plugins]:1.6.8";
> (issue https://issues.sonatype.org/browse/NEXUS-30749 opened, exported to
> [^NEXUS-30749 - Broken groupId metadata and follow-up NPE during
> org.sonatype.nexus.maven.staging.deploy.strategy.AbstractDeployStrategy.deployUp
> - Sonatype JIRA.pdf] ), the affected code is in Maven.
> The metadata is probably invalid but the Metadata class should be more robust
> when trying to do the merge in
> https://github.com/apache/maven/blob/951b5ee95f40147abbc2bb9d928e408b85d5aef3/maven-repository-metadata/src/main/mdo/metadata.mdo#L100
> and just ignore all plugin entries without all mandatory elements.
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