[MDEP-194] ArchiverException when using maven dependency plugin in multi-module projects

• Type: Bug
• Status: Closed
• Priority: Major
• Resolution: Duplicate
• Affects Version/s: 2.0
• Component/s: unpack, unpack-dependencies
• Assignee: Unassigned
• Reporter: Sascha Schumann
• Created: 16/Oct/08 04:07
• Updated: 31/Jul/13 03:25
• Resolved: 01/Aug/12 16:28

Description

Having the following module hierarchy the unpack-dependencies goal of the maven-dependency-plugin produces an ArchiverException.

• A
  • B
  • C (depends on B)

I took a quick look into the code and found that when unpacking the dependencies of module C the method unpack(File, File, String, String) of class org.apache.maven.plugin.dependency.AbstractDependencyMojo gets passed the target/classes directory of B as source file (instead of the created jar).

part of the pom.xml which caused the error:

<profile>
  <id>multi-module-coverage</id>
  <build>
    <plugins>
      <plugin>
        <groupId>org.apache.maven.plugins</groupId>
        <artifactId>maven-dependency-plugin</artifactId>
        <executions>
          <execution>
            <id>unpack-dependencies</id>
            <phase>process-classes</phase>
            <goals>
              <goal>unpack-dependencies</goal>
            </goals>
            <configuration>
              <outputDirectory>${project.build.directory}/classes</outputDirectory>
              <excludeClassifiers>tests</excludeClassifiers>
            </configuration>
          </execution>
        </executions>
      </plugin>
    </plugins>
  </build>
</profile>

exception:

org.codehaus.plexus.archiver.ArchiverException: The source must not be a directory.
        at org.codehaus.plexus.archiver.AbstractUnArchiver.validate(AbstractUnArchiver.java:174)
        at org.codehaus.plexus.archiver.AbstractUnArchiver.extract(AbstractUnArchiver.java:107)
        at org.apache.maven.plugin.dependency.AbstractDependencyMojo.unpack(AbstractDependencyMojo.java:266)
        at org.apache.maven.plugin.dependency.UnpackDependenciesMojo.execute(UnpackDependenciesMojo.java:90)
        at org.apache.maven.plugin.DefaultPluginManager.executeMojo(DefaultPluginManager.java:447)
        at org.apache.maven.lifecycle.DefaultLifecycleExecutor.executeGoals(DefaultLifecycleExecutor.java:539)
        at org.apache.maven.lifecycle.DefaultLifecycleExecutor.executeGoalWithLifecycle(DefaultLifecycleExecutor.java:480)
        at org.apache.maven.lifecycle.DefaultLifecycleExecutor.executeGoal(DefaultLifecycleExecutor.java:459)
        at org.apache.maven.lifecycle.DefaultLifecycleExecutor.executeGoalAndHandleFailures(DefaultLifecycleExecutor.java:311)
        at org.apache.maven.lifecycle.DefaultLifecycleExecutor.executeTaskSegments(DefaultLifecycleExecutor.java:278)
        at org.apache.maven.lifecycle.DefaultLifecycleExecutor.execute(DefaultLifecycleExecutor.java:143)
        at org.apache.maven.DefaultMaven.doExecute(DefaultMaven.java:333)
        at org.apache.maven.DefaultMaven.execute(DefaultMaven.java:126)
        at org.apache.maven.cli.MavenCli.main(MavenCli.java:282)
        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:597)
        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)

Issue Links

• duplicates: MDEP-98 dependency:unpack: The source must not be a directory
• is duplicated by: MDEP-354 dependency:unpack-dependencies fail if artifact is à directory
• is related to: MDEP-187 dependency:copy fails when invoked from m2e with workspace resolution enabled, or more generally when copying within reactor for phases earlier than package