Merge branch 'rs-projects-destroy-service-parity' into 'master'

Bring CE-EE parity to app/services/projects/destroy_service.rb

See merge request gitlab-org/gitlab-ce!19111

app/services/projects/destroy_service.rb

@@ -51,11 +51,11 @@ module Projects
 
       flush_caches(@project)
 
-      unless mv_repository(removal_path(repo_path), repo_path)
+      unless rollback_repository(removal_path(repo_path), repo_path)
         raise_error('Failed to restore project repository. Please contact the administrator.')
       end
 
-      unless mv_repository(removal_path(wiki_path), wiki_path)
+      unless rollback_repository(removal_path(wiki_path), wiki_path)
         raise_error('Failed to restore wiki repository. Please contact the administrator.')
       end
     end
@@ -84,6 +84,9 @@ module Projects
       # Skip repository removal. We use this flag when remove user or group
       return true if params[:skip_repo] == true
 
+      # There is a possibility project does not have repository or wiki
+      return true unless repo_exists?(path)
+
       new_path = removal_path(path)
 
       if mv_repository(path, new_path)
@@ -98,8 +101,18 @@ module Projects
       end
     end
 
-    def mv_repository(from_path, to_path)
+    def rollback_repository(old_path, new_path)
       # There is a possibility project does not have repository or wiki
+      return true unless repo_exists?(old_path)
+
+      mv_repository(old_path, new_path)
+    end
+
+    def repo_exists?(path)
+      gitlab_shell.exists?(project.repository_storage, path + '.git')
+    end
+
+    def mv_repository(from_path, to_path)
       return true unless gitlab_shell.exists?(project.repository_storage, from_path + '.git')
 
       gitlab_shell.mv_repository(project.repository_storage, from_path, to_path)