Merge branch 'fix/22225' into 'master'

Skip wiki creation when GitHub project has wiki enabled

## What does this MR do?

When importing a repository from if the repository has wiki, we should not create the default wiki. Otherwise the GitHub importer will fail because the wiki repository already exist. This bug was introduced here https://gitlab.com/gitlab-org/gitlab-ce/commit/892dea67717c0efbd6a28f7639f34535ec0a8747

## Are there points in the code the reviewer needs to double check?

No.

## Why was this MR needed?

GitLab fails to import GitHub Wiki.

## Screenshots (if relevant)

## Does this MR meet the acceptance criteria?

- [X] [CHANGELOG](https://gitlab.com/gitlab-org/gitlab-ce/blob/master/CHANGELOG) entry added
- Tests
  - [X] Added for this feature/bug
  - [ ] All builds are passing
- [X] Conform by the [merge request performance guides](http://docs.gitlab.com/ce/development/merge_request_performance_guidelines.html)
- [X] Conform by the [style guides](https://gitlab.com/gitlab-org/gitlab-ce/blob/master/CONTRIBUTING.md#style-guides)
- [ ] Branch has no merge conflicts with `master` (if you do - rebase it please)
- [X] [Squashed related commits together](https://git-scm.com/book/en/Git-Tools-Rewriting-History#Squashing-Commits)

## What are the relevant issue numbers?

Fixes #22225

See merge request !6665

2 files changed, 25 insertions, 13 deletions

diff --git a/lib/gitlab/github_import/importer.rb b/lib/gitlab/github_import/importer.rb
index b8321244473..4b70f33a851 100644
--- a/lib/gitlab/github_import/importer.rb
+++ b/lib/gitlab/github_import/importer.rb
@@ -170,10 +170,9 @@ module Gitlab
       end
 
       def import_wiki
-        unless project.wiki_enabled?
+        unless project.wiki.repository_exists?
           wiki = WikiFormatter.new(project)
           gitlab_shell.import_repository(project.repository_storage_path, wiki.path_with_namespace, wiki.import_url)
-          project.project.update_attribute(:wiki_access_level, ProjectFeature::ENABLED)
         end
       rescue Gitlab::Shell::Error => e
         # GitHub error message when the wiki repo has not been created,
diff --git a/lib/gitlab/github_import/project_creator.rb b/lib/gitlab/github_import/project_creator.rb
index 605abfabdab..a2410068845 100644
--- a/lib/gitlab/github_import/project_creator.rb
+++ b/lib/gitlab/github_import/project_creator.rb
@@ -1,7 +1,7 @@
 module Gitlab
   module GithubImport
     class ProjectCreator
-      attr_reader :repo, :namespace, :current_user, :session_data
+      attr_reader :repo, :name, :namespace, :current_user, :session_data
 
       def initialize(repo, name, namespace, current_user, session_data)
         @repo = repo
@@ -12,24 +12,37 @@ module Gitlab
       end
 
       def execute
-        project = ::Projects::CreateService.new(
+        ::Projects::CreateService.new(
           current_user,
-          name: @name,
-          path: @name,
+          name: name,
+          path: name,
           description: repo.description,
           namespace_id: namespace.id,
-          visibility_level: repo.private ? Gitlab::VisibilityLevel::PRIVATE : ApplicationSetting.current.default_project_visibility,
+          visibility_level: visibility_level,
           import_type: "github",
           import_source: repo.full_name,
-          import_url: repo.clone_url.sub("https://", "https://#{@session_data[:github_access_token]}@")
+          import_url: import_url,
+          skip_wiki: skip_wiki
         ).execute
+      end
+
+      private
 
-        # If repo has wiki we'll import it later
-        if repo.has_wiki? && project
-          project.project_feature.update_attribute(:wiki_access_level, ProjectFeature::DISABLED)
-        end
+      def import_url
+        repo.clone_url.sub('https://', "https://#{session_data[:github_access_token]}@")
+      end
+
+      def visibility_level
+        repo.private ? Gitlab::VisibilityLevel::PRIVATE : ApplicationSetting.current.default_project_visibility
+      end
 
-        project
+      #
+      # If the GitHub project repository has wiki, we should not create the
+      # default wiki. Otherwise the GitHub importer will fail because the wiki
+      # repository already exist.
+      #
+      def skip_wiki
+        repo.has_wiki?
       end
     end
   end