Don't fail the build when there is nothing to archive -- just warn -- provided system property hudson.tasks.ArtifactArchiver.warnOnEmpty=true

git-svn-id: https://hudson.dev.java.net/svn/hudson/trunk/hudson/main@21652 71c3de6d-444a-0410-be80-ed276b4c234a

core/src/main/java/hudson/tasks/ArtifactArchiver.java

@@ -64,6 +64,9 @@ public class ArtifactArchiver extends Recorder {
      * Just keep the last successful artifact set, no more.
      */
     private final boolean latestOnly;
+    
+    private static final Boolean allowEmptyArchive = 
+    	Boolean.getBoolean(ArtifactArchiver.class.getName()+".warnOnEmpty");
 
     @DataBoundConstructor
     public ArtifactArchiver(String artifacts, String excludes, boolean latestOnly) {
@@ -83,6 +86,14 @@ public class ArtifactArchiver extends Recorder {
     public boolean isLatestOnly() {
         return latestOnly;
     }
+    
+    private void listenerWarnOrError(BuildListener listener, String message) {
+    	if (allowEmptyArchive) {
+    		listener.getLogger().println(String.format("WARN: %s", message));
+    	} else {
+    		listener.error(message);
+    	}
+    }
 
     public boolean perform(AbstractBuild<?,?> build, Launcher launcher, BuildListener listener) throws InterruptedException {
         if(artifacts.length()==0) {
@@ -106,12 +117,14 @@ public class ArtifactArchiver extends Recorder {
                 if(build.getResult().isBetterOrEqualTo(Result.UNSTABLE)) {
                     // If the build failed, don't complain that there was no matching artifact.
                     // The build probably didn't even get to the point where it produces artifacts. 
-                    listener.error(Messages.ArtifactArchiver_NoMatchFound(artifacts));
+                    listenerWarnOrError(listener, Messages.ArtifactArchiver_NoMatchFound(artifacts));
                     String msg = ws.validateAntFileMask(artifacts);
                     if(msg!=null)
-                        listener.error(msg);
+                        listenerWarnOrError(listener, msg);
+                }
+                if (!allowEmptyArchive) {
+                	build.setResult(Result.FAILURE);
                 }
-                build.setResult(Result.FAILURE);
                 return true;
             }
         } catch (IOException e) {