Flush repository caches before renaming projectsrenaming-repository-caching

This ensures that if a project is later re-created using the old path it
doesn't end up re-using the old cache. This also ensures we don't keep
the cache around until its expired by Redis itself.

Fixes gitlab-org/gitlab-ce#13790

1 files changed, 18 insertions, 0 deletions

diff --git a/app/models/project.rb b/app/models/project.rb
index 95ad88c76ae..13679cbd9b7 100644
--- a/app/models/project.rb
+++ b/app/models/project.rb
@@ -711,6 +711,8 @@ class Project < ActiveRecord::Base
     old_path_with_namespace = File.join(namespace_dir, path_was)
     new_path_with_namespace = File.join(namespace_dir, path)
 
+    expire_caches_before_rename(old_path_with_namespace)
+
     if gitlab_shell.mv_repository(old_path_with_namespace, new_path_with_namespace)
       # If repository moved successfully we need to send update instructions to users.
       # However we cannot allow rollback since we moved repository
@@ -739,6 +741,22 @@ class Project < ActiveRecord::Base
     Gitlab::UploadsTransfer.new.rename_project(path_was, path, namespace.path)
   end
 
+  # Expires various caches before a project is renamed.
+  def expire_caches_before_rename(old_path)
+    repo = Repository.new(old_path, self)
+    wiki = Repository.new("#{old_path}.wiki", self)
+
+    if repo.exists?
+      repo.expire_cache
+      repo.expire_emptiness_caches
+    end
+
+    if wiki.exists?
+      wiki.expire_cache
+      wiki.expire_emptiness_caches
+    end
+  end
+
   def hook_attrs
     {
       name: name,