Override values from JSON with import data

This overrides values defined in the project JSON with the values
provided in project.import_data.data['override_params'].

These could be passed from the API.

changelogs/unreleased/bvl-override-import-params.yml

+---
+title: Allow overriding params on project import through API
+merge_request: 18086
+author:
+type: added

doc/api/project_import_export.md

@@ -111,6 +111,9 @@ POST /projects/import
 | `namespace` | integer/string | no | The ID or path of the namespace that the project will be imported to. Defaults to the current user's namespace |
 | `file` | string | yes | The file to be uploaded |
 | `path` | string | yes | Name and path for new project |
+| `override_params` | Hash | no | Supports all fields defined in the [Project API](projects.md)] |
+
+The override params passed will take precendence over all values defined inside the export file.
 
 To upload a file from your filesystem, use the `--form` argument. This causes
 cURL to post data using the header `Content-Type: multipart/form-data`.

lib/gitlab/import_export/project_tree_restorer.rb

@@ -77,13 +77,13 @@ module Gitlab
       end
 
       def default_relation_list
-        Gitlab::ImportExport::Reader.new(shared: @shared).tree.reject do |model|
+        reader.tree.reject do |model|
           model.is_a?(Hash) && model[:project_members]
         end
       end
 
       def restore_project
-        params = project_params
+        params = project_params.symbolize_keys
 
         if params[:description].present?
           params[:description_html] = nil
@@ -94,7 +94,20 @@ module Gitlab
       end
 
       def project_params
-        @tree_hash.reject do |key, value|
+        @project_params ||= json_params.merge(override_params)
+      end
+
+      def override_params
+        return {} unless params = @project.import_data&.data&.fetch('override_params')
+
+        @override_params ||= params.select do |key, _value|
+          Project.column_names.include?(key.to_s) &&
+            !reader.project_tree[:except].include?(key.to_sym)
+        end
+      end
+
+      def json_params
+        @json_params ||= @tree_hash.reject do |key, value|
           # return params that are not 1 to many or 1 to 1 relations
           value.respond_to?(:each) && !Project.column_names.include?(key)
         end
@@ -181,6 +194,10 @@ module Gitlab
 
         relation_hash.merge(params)
       end
+
+      def reader
+        @reader ||= Gitlab::ImportExport::Reader.new(shared: @shared)
+      end
     end
   end
 end

spec/lib/gitlab/import_export/project.json

@@ -2,7 +2,7 @@
   "description": "Nisi et repellendus ut enim quo accusamus vel magnam.",
   "visibility_level": 10,
   "archived": false,
-  "description_html": "description",
+  "description_html": "<p dir=\"auto\">Nisi et repellendus ut enim quo accusamus vel magnam.</p>",
   "labels": [
     {
       "id": 2,

spec/lib/gitlab/import_export/project_tree_restorer_spec.rb

@@ -47,7 +47,8 @@ describe Gitlab::ImportExport::ProjectTreeRestorer do
       end
 
       it 'has the project html description' do
-        expect(Project.find_by_path('project').description_html).to eq('description')
+        expected_description_html = "<p dir=\"auto\">Nisi et repellendus ut enim quo accusamus vel magnam.</p>"
+        expect(Project.find_by_path('project').description_html).to eq(expected_description_html)
       end
 
       it 'has the same label associated to two issues' do
@@ -317,6 +318,24 @@ describe Gitlab::ImportExport::ProjectTreeRestorer do
       end
     end
 
+    context 'when the project has overriden params in import data' do
+      it 'overwrites the params stored in the JSON' do
+        project.create_import_data(data: { override_params: { description: "Overridden" } })
+
+        restored_project_json
+
+        expect(project.description).to eq("Overridden")
+      end
+
+      it 'does not allow setting params that are excluded from import_export settings' do
+        project.create_import_data(data: { override_params: { lfs_enabled: true } })
+
+        restored_project_json
+
+        expect(project.lfs_enabled).to be_nil
+      end
+    end
+
     context 'with a project that has a group' do
       let!(:project) do
         create(:project,

spec/requests/api/project_import_spec.rb

@@ -71,7 +71,7 @@ describe API::ProjectImport do
       expect(json_response['error']).to eq('file is invalid')
     end
 
-    it 'allows overriding project params' do
+    it 'stores params that can be overridden' do
       stub_import(namespace)
       override_params = { 'description' => 'Hello world' }
 
@@ -85,7 +85,7 @@ describe API::ProjectImport do
       expect(import_project.import_data.data['override_params']).to eq(override_params)
     end
 
-    it 'does store params that are not allowed' do
+    it 'does not store params that are not allowed' do
       stub_import(namespace)
       override_params = { 'not_allowed' => 'Hello world' }
 
@@ -99,6 +99,21 @@ describe API::ProjectImport do
       expect(import_project.import_data.data['override_params']).to be_empty
     end
 
+    it 'correctly overrides params during the import' do
+      override_params = { 'description' => 'Hello world' }
+
+      Sidekiq::Testing.inline! do
+        post api('/projects/import', user),
+             path: 'test-import',
+             file: fixture_file_upload(file),
+             namespace: namespace.id,
+             override_params: override_params
+      end
+      import_project = Project.find(json_response['id'])
+
+      expect(import_project.description).to eq('Hello world')
+    end
+
     def stub_import(namespace)
       expect_any_instance_of(Project).to receive(:import_schedule)
       expect(::Projects::CreateService).to receive(:new).with(user, hash_including(namespace_id: namespace.id)).and_call_original