Project import maps members' created_by_id users based on source user ID

Merge branch 'security-597-project-import-maps-members-created_by_id-users-based-on-source-user-id-14-9' into '14-9-stable-ee'

See merge request gitlab-org/security/gitlab!2301

Changelog: security

lib/gitlab/import_export/members_mapper.rb

@@ -19,9 +19,8 @@ module Gitlab
             @exported_members.inject(missing_keys_tracking_hash) do |hash, member|
               if member['user']
                 old_user_id = member['user']['id']
-                old_user_email = member.dig('user', 'public_email') || member.dig('user', 'email')
-                existing_user = User.find_by(find_user_query(old_user_email)) if old_user_email
-                hash[old_user_id] = existing_user.id if existing_user && add_team_member(member, existing_user)
+                existing_user_id = existing_users_email_map[get_email(member)]
+                hash[old_user_id] = existing_user_id if existing_user_id && add_team_member(member, existing_user_id)
               else
                 add_team_member(member)
               end
@@ -72,11 +71,45 @@ module Gitlab
         member&.user == @user && member.access_level >= highest_access_level
       end
-      def add_team_member(member, existing_user = nil)
-        return true if existing_user && @importable.members.exists?(user_id: existing_user.id)
-        member['user'] = existing_user
+      # Returns {email => user_id} hash where user_id is an ID at current instance
+      def existing_users_email_map
+        @existing_users_email_map ||= begin
+          emails = @exported_members.map { |member| get_email(member) }
+
+          User.by_user_email(emails).pluck(:email, :id).to_h
+        end
+      end
+
+      # Returns {user_id => email} hash where user_id is an ID at source "old" instance
+      def exported_members_email_map
+        @exported_members_email_map ||= begin
+          result = {}
+          @exported_members.each do |member|
+            email = get_email(member)
+
+            next unless email
+
+            result[member.dig('user', 'id')] = email
+          end
+
+          result
+        end
+      end
+
+      def get_email(member_data)
+        return unless member_data['user']
+
+        member_data.dig('user', 'public_email') || member_data.dig('user', 'email')
+      end
+
+      def add_team_member(member, existing_user_id = nil)
+        return true if existing_user_id && @importable.members.exists?(user_id: existing_user_id)
         member_hash = member_hash(member)
+        if existing_user_id
+          member_hash.delete('user')
+          member_hash['user_id'] = existing_user_id
+        end
         member = relation_class.create(member_hash)
@@ -92,11 +125,19 @@ module Gitlab
       end
       def member_hash(member)
-        parsed_hash(member).merge(
+        result = parsed_hash(member).merge(
           'source_id' => @importable.id,
           'importing' => true,
           'access_level' => [member['access_level'], highest_access_level].min
         ).except('user_id')
+
+        if result['created_by_id']
+          created_by_email = exported_members_email_map[result['created_by_id']]
+
+          result['created_by_id'] = existing_users_email_map[created_by_email]
+        end
+
+        result
       end
       def parsed_hash(member)
@@ -104,14 +145,6 @@ module Gitlab
                                                      relation_class: relation_class)
       end
-      def find_user_query(email)
-        user_arel[:email].eq(email)
-      end
-
-      def user_arel
-        @user_arel ||= User.arel_table
-      end
-
       def relation_class
         case @importable
         when ::Project
@@ -143,7 +176,7 @@ module Gitlab
       def base_log_params(member_hash)
         {
-          user_id: member_hash['user']&.id,
+          user_id: member_hash['user_id'],
           access_level: member_hash['access_level'],
           importable_type: @importable.class.to_s,
           importable_id: @importable.id,

spec/lib/gitlab/import_export/members_mapper_spec.rb

@@ -17,7 +17,7 @@ RSpec.describe Gitlab::ImportExport::MembersMapper do
            "notification_level" => 3,
            "created_at" => "2016-03-11T10:21:44.822Z",
            "updated_at" => "2016-03-11T10:21:44.822Z",
-           "created_by_id" => nil,
+           "created_by_id" => 1,
            "invite_email" => nil,
            "invite_token" => nil,
            "invite_accepted_at" => nil,
@@ -38,10 +38,24 @@ RSpec.describe Gitlab::ImportExport::MembersMapper do
            "notification_level" => 3,
            "created_at" => "2016-03-11T10:21:44.822Z",
            "updated_at" => "2016-03-11T10:21:44.822Z",
-           "created_by_id" => 1,
+           "created_by_id" => 2,
            "invite_email" => 'invite@test.com',
            "invite_token" => 'token',
            "invite_accepted_at" => nil
+         },
+         {
+           "id" => 3,
+           "access_level" => 40,
+           "source_id" => 14,
+           "source_type" => source_type,
+           "user_id" => nil,
+           "notification_level" => 3,
+           "created_at" => "2016-03-11T10:21:44.822Z",
+           "updated_at" => "2016-03-11T10:21:44.822Z",
+           "created_by_id" => nil,
+           "invite_email" => 'invite2@test.com',
+           "invite_token" => 'token',
+           "invite_accepted_at" => nil
          }]
       end
@@ -68,12 +82,37 @@ RSpec.describe Gitlab::ImportExport::MembersMapper do
         expect(member_class.find_by_invite_email('invite@test.com')).not_to be_nil
       end
-      it 'removes old user_id from member_hash to avoid conflict with user key' do
+      it 'maps created_by_id to user on new instance' do
+        expect(member_class)
+          .to receive(:create)
+            .once
+            .with(hash_including('user_id' => user2.id, 'created_by_id' => nil))
+            .and_call_original
+        expect(member_class)
+          .to receive(:create)
+            .once
+            .with(hash_including('invite_email' => 'invite@test.com', 'created_by_id' => nil))
+            .and_call_original
+        expect(member_class)
+          .to receive(:create)
+            .once
+            .with(hash_including('invite_email' => 'invite2@test.com', 'created_by_id' => nil))
+            .and_call_original
+
+        members_mapper.map
+      end
+
+      it 'replaced user_id with user_id from new instance' do
+        expect(member_class)
+          .to receive(:create)
+            .once
+            .with(hash_including('user_id' => user2.id))
+            .and_call_original
         expect(member_class)
           .to receive(:create)
-                .twice
-                .with(hash_excluding('user_id'))
-                .and_call_original
+            .twice
+            .with(hash_excluding('user_id'))
+            .and_call_original
         members_mapper.map
       end
@@ -99,7 +138,7 @@ RSpec.describe Gitlab::ImportExport::MembersMapper do
           end
           expect(logger).to receive(:info).with(hash_including(expected_log_params.call(user2.id))).once
-          expect(logger).to receive(:info).with(hash_including(expected_log_params.call(nil))).once
+          expect(logger).to receive(:info).with(hash_including(expected_log_params.call(nil))).twice
           members_mapper.map
         end