Merge lp:~jibel/cupstream2distro-config/skip_downstream_task_if_no_project into lp:cupstream2distro-config

[Jean-Baptiste Lallement]

Skip section 'TriggerBuilder' in template 'prepare-config' if the project list is empty

When the project list for a stack is empty the template generated contained a section to build downstream projects with an empty field "Projects to build" which make the job fail.

This patch completely skips this section if the project list is empty

[PS Jenkins bot (ps-jenkins)]

review: Approve (continuous-integration)

=== modified file 'daily-release/cu2d-update-stack'
--- daily-release/cu2d-update-stack	2013-03-13 18:25:09 +0000
+++ daily-release/cu2d-update-stack	2013-03-28 14:33:27 +0000
@@ -139,7 +139,7 @@
             ctx['opts'] = '-s %s -p %s -b %s -n %s' % (
                 stack['series'], stack['ppa'], lpb, srcname)
             if stack['dest'] != 'ubuntu':
-		ctx['opts']  += ' -d {}'.format(stack['dest'])
+                ctx['opts']  += ' -d {}'.format(stack['dest'])
             ctx['projectname'] = srcname
             setup_job(jkh, jjenv, jobname, TEMPLATES['prepare-project'],
                       ctx, update)

=== modified file 'daily-release/jenkins-templates/prepare-config.xml.tmpl'
--- daily-release/jenkins-templates/prepare-config.xml.tmpl	2013-03-11 10:56:24 +0000
+++ daily-release/jenkins-templates/prepare-config.xml.tmpl	2013-03-28 14:33:27 +0000
@@ -22,6 +22,7 @@
 
 </command>
     </hudson.tasks.Shell>
+{% if projects %}    
     <hudson.plugins.parameterizedtrigger.TriggerBuilder>
       <configs>
         <hudson.plugins.parameterizedtrigger.BlockableBuildTriggerConfig>
@@ -52,6 +53,7 @@
         </hudson.plugins.parameterizedtrigger.BlockableBuildTriggerConfig>
       </configs>
     </hudson.plugins.parameterizedtrigger.TriggerBuilder>
+{% endif %}
   </builders>
   <publishers>
     <hudson.plugins.build__publisher.BuildPublisher>