if (!p.isConfigurable()) continue;
boolean isUpstream = upstream.contains(p);
synchronized(p) {
// does 'p' include us in its BuildTrigger?
DescribableList<Publisher,Descriptor<Publisher>> pl = p.getPublishersList();
BuildTrigger trigger = pl.get(BuildTrigger.class);
List<AbstractProject> newChildProjects = trigger == null ? new ArrayList<AbstractProject>():trigger.getChildProjects(p);
if(isUpstream) {
if(!newChildProjects.contains(this))
newChildProjects.add(this);
} else {
newChildProjects.remove(this);
}
if(newChildProjects.isEmpty()) {
pl.remove(BuildTrigger.class);
} else {
// here, we just need to replace the old one with the new one,
// but there was a regression (we don't know when it started) that put multiple BuildTriggers
// into the list.
// for us not to lose the data, we need to merge them all.
List<BuildTrigger> existingList = pl.getAll(BuildTrigger.class);
BuildTrigger existing;
switch (existingList.size()) {
case 0:
existing = null;
break;
case 1:
existing = existingList.get(0);
break;
default:
pl.removeAll(BuildTrigger.class);
Set<AbstractProject> combinedChildren = new HashSet<AbstractProject>();
for (BuildTrigger bt : existingList)
combinedChildren.addAll(bt.getChildProjects(p));
existing = new BuildTrigger(new ArrayList<AbstractProject>(combinedChildren),existingList.get(0).getThreshold());
pl.add(existing);
break;
}
if(existing!=null && existing.hasSame(p,newChildProjects))
continue; // no need to touch
pl.replace(new BuildTrigger(newChildProjects,
existing==null?Result.SUCCESS:existing.getThreshold()));
}
}
}
// notify the queue as the project might be now tied to different node