add project name and namespace to filename on project export

added changelog

CHANGELOG

@@ -93,6 +93,7 @@ v 8.10.0 (unreleased)
   - Redesign Builds and Pipelines pages
   - Change status color and icon for running builds
   - Fix markdown rendering for: consecutive labels references, label references that begin with a digit or contains `.`
+  - Project export filename now includes the project and namespace path
 
 v 8.9.6
   - Fix importing of events under notes for GitLab projects. !5154

app/services/projects/import_export/export_service.rb

@@ -10,7 +10,7 @@ module Projects
 
       def save_all
         if [version_saver, project_tree_saver, uploads_saver, repo_saver, wiki_repo_saver].all?(&:save)
-          Gitlab::ImportExport::Saver.save(shared: @shared)
+          Gitlab::ImportExport::Saver.save(project: project, shared: @shared)
           notify_success
         else
           cleanup_and_notify

lib/gitlab/import_export.rb

@@ -3,6 +3,7 @@ module Gitlab
     extend self
 
     VERSION = '0.1.1'
+    FILENAME_LIMIT = 50
 
     def export_path(relative_path:)
       File.join(storage_path, relative_path)
@@ -28,6 +29,12 @@ module Gitlab
       'VERSION'
     end
 
+    def export_filename(project:)
+      basename = "#{Time.now.strftime('%Y-%m-%d_%H-%M-%3N')}_#{project.namespace.path}_#{project.path}"
+
+      "#{basename[0..FILENAME_LIMIT]}_export.tar.gz"
+    end
+
     def version
       VERSION
     end

lib/gitlab/import_export/saver.rb

@@ -7,7 +7,8 @@ module Gitlab
         new(*args).save
       end
 
-      def initialize(shared:)
+      def initialize(project:, shared:)
+        @project = project
         @shared = shared
       end
 
@@ -36,7 +37,7 @@ module Gitlab
       end
 
       def archive_file
-        @archive_file ||= File.join(@shared.export_path, '..', "#{Time.now.strftime('%Y-%m-%d_%H-%M-%3N')}_project_export.tar.gz")
+        @archive_file ||= File.join(@shared.export_path, '..', Gitlab::ImportExport.export_filename(project: @project))
       end
     end
   end

spec/lib/gitlab/import_export/import_export_spec.rb

+require 'spec_helper'
+
+describe Gitlab::ImportExport, services: true do
+  describe 'export filename' do
+    let(:project) { create(:project, :public, path: 'project-path') }
+
+    it 'contains the project path' do
+      expect(described_class.export_filename(project: project)).to include(project.path)
+    end
+
+    it 'contains the namespace path' do
+      expect(described_class.export_filename(project: project)).to include(project.namespace.path)
+    end
+
+    it 'does not go over a certain length' do
+      project.path = 'a' * 100
+
+      expect(described_class.export_filename(project: project).length).to be < 70
+    end
+  end
+end