Cache output of Repository#exists?

This caches the output of Repository#exists? in Redis while making sure
it's flushed properly when creating new repositories, deleting them,
etc.

For the ProjectWiki tests to work I had to make ProjectWiki#create_repo!
public as testing private methods in RSpec is a bit of a pain.

1 files changed, 3 insertions, 2 deletions

diff --git a/app/workers/repository_fork_worker.rb b/app/workers/repository_fork_worker.rb
index 21d311579e3..f9e32337983 100644
--- a/app/workers/repository_fork_worker.rb
+++ b/app/workers/repository_fork_worker.rb
@@ -20,14 +20,15 @@ class RepositoryForkWorker
       return
     end
 
+    project.repository.after_import
+
     unless project.valid_repo?
-      logger.error("Project #{id} had an invalid repository after fork")
+      logger.error("Project #{project_id} had an invalid repository after fork")
       project.update(import_error: "The forked repository is invalid.")
       project.import_fail
       return
     end
 
-    project.repository.after_import
     project.import_finish
   end
 end