Hello,
I am inteh process of writing a series of plugins. The last plugin is
supposed to package some generated sourcefiles into an archive.
I was thinking to reuse the Archiver Component from the plexus libraries
for this. So my code looks like this:
package com.sonicsw.maven.plugins;
import java.io.File;
import org.apache.maven.plugin.MojoExecutionException;
import org.apache.maven.plugin.MojoFailureException;
import org.codehaus.plexus.archiver.Archiver;
import org.codehaus.plexus.archiver.manager.ArchiverManager;
/**
* Packaging an ESB application.
*
* @goal package
*/
public class MavenEsbPackage extends AbstractESBMojo {
/**
* To look up Archiver/UnArchiver implementations
*
* @parameter
expression="${component.org.codehaus.plexus.archiver.manager.ArchiverManager}"
*/
protected ArchiverManager archiverManager;
public void execute() throws MojoExecutionException,
MojoFailureException {
getLog().info("Packaging ESB application: ");
getLog().info("Project : " + artifactId);
getLog().info("Group : " + groupId);
getLog().info("Version : " + version);
getLog().info("Source : " + sourceDirectory);
getLog().info("Build : " + buildDirectory);
getLog().info("XAR : " + xarDirectory);
File archiveFile = new File(buildDirectory, finalName + ".xar");
try {
getLog().info("Creating archive : " + archiveFile.getAbsolutePath());
Archiver archiver = archiverManager.getArchiver("zip");
archiver.setDestFile(archiveFile);
//archiver.addDirectory(new File(buildDirectory, xarDirectory));
archiver.addDirectory(new File("generated-src/" + xarDirectory));
archiver.createArchive();
} catch(Exception e) {
throw new MojoExecutionException("Failed to create ESB archive " +
archiveFile.getAbsolutePath(), e);
}
}
}
However, when I try to retrieve the Archiver, I get a NPE:
[INFO] Trace
org.apache.maven.lifecycle.LifecycleExecutionException: Failed to create
ESB archive
E:\LHSys\maven\snapshots\com.lhsystems.iocc\iocc-esb-flow-pubopflightp\1.0-SNAPSHOT\target\iocc-esb-flow-pubopflightp-1.0-SNAPSHOT.xar
at
org.apache.maven.lifecycle.DefaultLifecycleExecutor.executeGoals(DefaultLifecycleExecutor.java:583)
at
org.apache.maven.lifecycle.DefaultLifecycleExecutor.executeGoalWithLifecycle(DefaultLifecycleExecutor.java:499)
at
org.apache.maven.lifecycle.DefaultLifecycleExecutor.executeGoal(DefaultLifecycleExecutor.java:478)
at
org.apache.maven.lifecycle.DefaultLifecycleExecutor.executeGoalAndHandleFailures(DefaultLifecycleExecutor.java:330)
at
org.apache.maven.lifecycle.DefaultLifecycleExecutor.executeTaskSegments(DefaultLifecycleExecutor.java:291)
at
org.apache.maven.lifecycle.DefaultLifecycleExecutor.execute(DefaultLifecycleExecutor.java:142)
at org.apache.maven.DefaultMaven.doExecute(DefaultMaven.java:336)
at org.apache.maven.DefaultMaven.execute(DefaultMaven.java:129)
at org.apache.maven.cli.MavenCli.main(MavenCli.java:287)
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: org.apache.maven.plugin.MojoExecutionException: Failed to
create ESB archive
E:\LHSys\maven\snapshots\com.lhsystems.iocc\iocc-esb-flow-pubopflightp\1.0-SNAPSHOT\target\iocc-esb-flow-pubopflightp-1.0-SNAPSHOT.xar
at
com.sonicsw.maven.plugins.MavenEsbPackage.execute(MavenEsbPackage.java:49)
at
org.apache.maven.plugin.DefaultPluginManager.executeMojo(DefaultPluginManager.java:451)
at
org.apache.maven.lifecycle.DefaultLifecycleExecutor.executeGoals(DefaultLifecycleExecutor.java:558)
... 16 more
Caused by: java.lang.NullPointerException
at
org.codehaus.plexus.archiver.manager.DefaultArchiverManager.getArchiver(DefaultArchiverManager.java:60)
at
com.sonicsw.maven.plugins.MavenEsbPackage.execute(MavenEsbPackage.java:41)
... 18 more
It seems that the ArchiverManager doesn't know about the Plexus Context
(looking at (DefaultArchiverManager.java:60) ). I am guessing that I
miss a basic initialization step in order to reuse a component.
Am I missing something?--Could you perhaps point me to more
documentation on reusing components in a plugin (I have read the
http://docs.codehaus.org/display/MAVENUSER/Mojo+Developer+Cookbook and
the Mojo tutorial ...).
Thanks in advance
Andreas
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