Jenkins: Trigger Multi-branch pipeline on upstream change

Question

I am currently testing the pipeline approach of Jenkins 2.0 to see if it works for the build environment I am using.

First about the environment itself. It currently

Answer 1

Pipeline Job configuration still natively supports Build Triggers, including reverse build trigger, Build after other projects are built. You can even specify a branch from Pipeline Multi-branch project.

Unfortunately reverse triggering is not available Pipeline Multi-branch jobs. The closest you can get to reverse triggering is by using Promoted Builds Plugin. But it still doesn't let you configure per branch setup.

Additionally Snippet Generator clarifies:

The following variables are currently unavailable inside a Pipeline script:

NODE_LABELS WORKSPACE SCM-specific variables such as SVN_REVISION

ps. Maybe the only way would be to prompt from upstream to downstream.