[jira] [Resolved] (MNG-5868) Adding serval times the same artifact via MavenProjectHelper (attachArtifact) does not produce a failure

["Christian Schulte (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/MNG-5868?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Christian Schulte resolved MNG-5868.
------------------------------------
       Resolution: Fixed
    Fix Version/s: 3.4.0

> Adding serval times the same artifact via MavenProjectHelper (attachArtifact) does not produce a failure 
> ---------------------------------------------------------------------------------------------------------
>
>                 Key: MNG-5868
>                 URL: https://issues.apache.org/jira/browse/MNG-5868
>             Project: Maven
>          Issue Type: Bug
>          Components: core
>    Affects Versions: 3.0.5, 3.1.1, 3.2.5, 3.3.3
>            Reporter: Karl Heinz Marbaise
>            Assignee: Christian Schulte
>             Fix For: 3.4.0
>
>
> During the check of an issue MSHADE-195 i stumbled over several things...
> If you take a look here and the log output excerpt:
> {noformat}
> INFO] Minimized 2341 -> 1293
> [INFO] Minimized 3282 -> 2234
> [INFO] Replacing original artifact with shaded artifact.
> [INFO] Replacing /Users/kama/ws-git/apache/mshade/mshade-195/target/MSHADE-195-example-1-SNAPSHOT.jar with /Users/kama/ws-git/apache/mshade/mshade-195/target/MSHADE-195-example-1-SNAPSHOT-shaded.jar
> [INFO] Replacing original source artifact with shaded source artifact.
> [INFO] Replacing /Users/kama/ws-git/apache/mshade/mshade-195/target/MSHADE-195-example-1-SNAPSHOT-sources.jar with /Users/kama/ws-git/apache/mshade/mshade-195/target/MSHADE-195-example-1-SNAPSHOT-shaded-sources.jar
> [INFO] Dependency-reduced POM written at: /Users/kama/ws-git/apache/mshade/mshade-195/dependency-reduced-pom.xml
> [INFO]
> [INFO] --- maven-install-plugin:2.5.2:install (default-install) @ MSHADE-195-example ---
> [INFO] Installing /Users/kama/ws-git/apache/mshade/mshade-195/target/MSHADE-195-example-1-SNAPSHOT.jar to /Users/kama/.m2/repository/com/example/MSHADE-195-example/1-SNAPSHOT/MSHADE-195-example-1-SNAPSHOT.jar
> [INFO] Installing /Users/kama/ws-git/apache/mshade/mshade-195/dependency-reduced-pom.xml to /Users/kama/.m2/repository/com/example/MSHADE-195-example/1-SNAPSHOT/MSHADE-195-example-1-SNAPSHOT.pom
> [INFO] Installing /Users/kama/ws-git/apache/mshade/mshade-195/target/MSHADE-195-example-1-SNAPSHOT-sources.jar to /Users/kama/.m2/repository/com/example/MSHADE-195-example/1-SNAPSHOT/MSHADE-195-example-1-SNAPSHOT-sources.jar
> [INFO] Installing /Users/kama/ws-git/apache/mshade/mshade-195/target/MSHADE-195-example-1-SNAPSHOT-sources.jar to /Users/kama/.m2/repository/com/example/MSHADE-195-example/1-SNAPSHOT/MSHADE-195-example-1-SNAPSHOT-sources.jar
> [INFO] 
> {noformat}
> Install plugin tries to install two identical artifacts which will work for maven-install-plugin but would fail a deploy to repository manager (for releases) etc.
> So after diving into the problem i found the following code in maven-core (MavenProject.java):
> {code:java}
>     /**
>      * Add or replace an artifact. This method is now deprecated. Use the @{MavenProjectHelper} to attach artifacts to a
>      * project. In spite of the 'throws' declaration on this API, this method has never thrown an exception since Maven
>      * 3.0.x. Historically, it logged and ignored a second addition of the same g/a/v/c/t. Now it replaces the file for
>      * the artifact, so that plugins (e.g. shade) can change the pathname of the file for a particular set of
>      * coordinates.
>      *
>      * @param artifact the artifact to add or replace.
>      * @throws DuplicateArtifactAttachmentException
>      */
>     public void addAttachedArtifact( Artifact artifact )
>         throws DuplicateArtifactAttachmentException
>     {
>         getAttachedArtifacts().add( artifact );
>     }
>     public List<Artifact> getAttachedArtifacts()
>     {
>         if ( attachedArtifacts == null )
>         {
>             attachedArtifacts = new ArrayList<>();
>         }
>         return attachedArtifacts;
>     }
> {code}
> So taking a look into MavenProjectHelper.java and the implementation (DefaultMavenProjectHelper.java).
> {code:java}
>     /**
>      * Add an attached artifact or replace the file for an existing artifact.
>      *
>      * @see MavenProject#addAttachedArtifact(org.apache.maven.artifact.Artifact)
>      * @param project project reference.
>      * @param artifact artifact to add or replace.
>      */
>     public void attachArtifact( MavenProject project, Artifact artifact )
>     {
>         project.addAttachedArtifact( artifact );
>     }
> {code}
> which means that there is not check if an artifacts is already attached.



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