Skip wiki creation when GitHub project has wiki enabled

app/services/projects/create_service.rb

@@ -7,6 +7,8 @@ module Projects
     def execute
       forked_from_project_id = params.delete(:forked_from_project_id)
       import_data = params.delete(:import_data)
+      @skip_wiki = params.delete(:skip_wiki)
+
       @project = Project.new(params)
 
       # Make sure that the user is allowed to use the specified visibility level
@@ -80,7 +82,7 @@ module Projects
       log_info("#{@project.owner.name} created a new project \"#{@project.name_with_namespace}\"")
 
       unless @project.gitlab_project_import?
-        @project.create_wiki if @project.feature_available?(:wiki, current_user)
+        @project.create_wiki unless skip_wiki?
         @project.build_missing_services
 
         @project.create_labels
@@ -94,6 +96,10 @@ module Projects
       end
     end
 
+    def skip_wiki?
+      !@project.feature_available?(:wiki, current_user) || @skip_wiki
+    end
+
     def save_project_and_import_data(import_data)
       Project.transaction do
         @project.create_or_update_import_data(data: import_data[:data], credentials: import_data[:credentials]) if import_data

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,

lib/gitlab/github_import/project_creator.rb

 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

spec/lib/gitlab/github_import/project_creator_spec.rb

@@ -33,7 +33,7 @@ describe Gitlab::GithubImport::ProjectCreator, lib: true do
       expect(project.import_data.credentials).to eq(user: 'asdffg', password: nil)
     end
 
-    context 'when Github project is private' do
+    context 'when GitHub project is private' do
       it 'sets project visibility to private' do
         repo.private = true
 
@@ -43,7 +43,7 @@ describe Gitlab::GithubImport::ProjectCreator, lib: true do
       end
     end
 
-    context 'when Github project is public' do
+    context 'when GitHub project is public' do
       before do
         allow_any_instance_of(ApplicationSetting).to receive(:default_project_visibility).and_return(Gitlab::VisibilityLevel::INTERNAL)
       end
@@ -56,5 +56,25 @@ describe Gitlab::GithubImport::ProjectCreator, lib: true do
         expect(project.visibility_level).to eq(Gitlab::VisibilityLevel::INTERNAL)
       end
     end
+
+    context 'when GitHub project has wiki' do
+      it 'does not create the wiki repository' do
+        allow(repo).to receive(:has_wiki?).and_return(true)
+
+        project = service.execute
+
+        expect(project.wiki.repository_exists?).to eq false
+      end
+    end
+
+    context 'when GitHub project does not have wiki' do
+      it 'creates the wiki repository' do
+        allow(repo).to receive(:has_wiki?).and_return(false)
+
+        project = service.execute
+
+        expect(project.wiki.repository_exists?).to eq true
+      end
+    end
   end
 end