tree 5875fa1796032aef8ca9475d07efe5e7e4f44d02
parent 2920bcb109c78f8c0ee10472600ea8ab920d6986
author Chris Kuiper <ckuiper@google.com> 1486595697 -0800
committer Chris Kuiper <ckuiper@google.com> 1488500925 -0800

libexperiments: properly refresh experiment states

An experiment is enabled if the file /config/experiment/<exp>.active
exists. The old code assumed that Catawampus would create/delete this
file whenever the state of an experiment changed (as pushed by ACS).
It turns out that it does not do that and instead just creates a new
file, either <exp>.requested or <exp>.unrequested, and then expects
the user process to check for that and create/delete the <exp>.active
accordingly. The new code does this now.

I also dumped all my understanding of the experiments framework into
go/gfiber-experiments-for-the-rest-of-us. Please read there for more
details.

Change-Id: Ibdd4fcce447905ce6f63694357e9f335d630872f