[MGPG-18] NPE in GpgSigner

• Type: Bug
• Status: Closed
• Priority: Minor
• Resolution: Fixed
• Affects Version/s: 1.0-alpha-4
• Fix Version/s: 1.0
• Assignee: Benjamin Bentmann
• Reporter: Geoffrey Wiseman
• Created: 03/Nov/09 13:03
• Updated: 11/Feb/10 08:04
• Resolved: 11/Feb/10 08:04

Description

If I run "mvn package gpg:sign", this works. If I run "mvn gpg:sign", I get the following stack trace:

java.lang.NullPointerException
	at org.apache.maven.plugin.gpg.GpgSigner.generateSignatureForArtifact(GpgSigner.java:119)
	at org.apache.maven.plugin.gpg.GpgSignAttachedMojo.execute(GpgSignAttachedMojo.java:228)
	at org.apache.maven.plugin.DefaultPluginManager.executeMojo(DefaultPluginManager.java:490)
	at org.apache.maven.lifecycle.DefaultLifecycleExecutor.executeGoals(DefaultLifecycleExecutor.java:694)

After running this through a debugger, I can see that this is because the 'file' object (project.getArtifact().getFile()) is null, which seems to be the case any time the artifact wasn't generated in this invocation of Maven. At the very least, this should result in a good error message, although it would be nice if "gpg:sign" would work on an artifact that was previously-generated.