added another convenience method.

git-svn-id: https://hudson.dev.java.net/svn/hudson/trunk/hudson/main@5118 71c3de6d-444a-0410-be80-ed276b4c234a

core/src/main/java/hudson/model/Computer.java

@@ -5,6 +5,8 @@ import hudson.Functions;
 import hudson.remoting.Callable;
 import hudson.remoting.Channel;
 import hudson.remoting.VirtualChannel;
+import hudson.tasks.Publisher;
+import hudson.tasks.BuildWrapper;
 import hudson.util.DaemonThreadFactory;
 import hudson.util.RunList;
 import org.kohsuke.stapler.StaplerRequest;
@@ -356,4 +358,13 @@ public abstract class Computer extends AbstractModelObject {
         ((Channel)getChannel()).dumpExportTable(w);
         w.close();
     }
+
+    /**
+     * Gets the current {@link Computer} that the build is running.
+     * This method only works when called during a build, such as by
+     * {@link Publisher}, {@link BuildWrapper}, etc.
+     */
+    public static Computer currentComputer() {
+        return Executor.currentExecutor().getOwner();
+    }
 }