Merge branch 'feature/project-export' into 'master'

Export project functionality

This is a MR for the export functionality of https://gitlab.com/gitlab-org/gitlab-ce/issues/3050, which adds the ability to export single projects.

- [x] members
- DB data
  - [x] issues
  - [x] issue comments
  - [x] merge requests
  - [x] merge request diff
  - [x] merge request comments
  - [x] labels
  - [x] milestones
  - [x] snippets
  - [x] releases
  - [x] events
  - [x] commit statuses
  - [x] CI builds
- File system data
  - [x] Git repository
  - [x] wiki
  - [x] uploads
  - [ ] ~~CI build traces~~
  - [ ] ~~CI build artifacts~~
  - [ ] ~~LFS objects~~
- DB configuration
  - [x] services
  - [x] web hooks
  - [x] protected branches
  - [x] deploy keys
  - [x] CI variables
  - [x] CI triggers

See merge request !3114

27 files changed, 402 insertions, 31 deletions

diff --git a/app/controllers/application_controller.rb b/app/controllers/application_controller.rb
index 72d1b97bf56..dd1bc6f5d52 100644
--- a/app/controllers/application_controller.rb
+++ b/app/controllers/application_controller.rb
@@ -24,7 +24,7 @@ class ApplicationController < ActionController::Base
   protect_from_forgery with: :exception
 
   helper_method :abilities, :can?, :current_application_settings
-  helper_method :import_sources_enabled?, :github_import_enabled?, :github_import_configured?, :gitlab_import_enabled?, :gitlab_import_configured?, :bitbucket_import_enabled?, :bitbucket_import_configured?, :gitorious_import_enabled?, :google_code_import_enabled?, :fogbugz_import_enabled?, :git_import_enabled?
+  helper_method :import_sources_enabled?, :github_import_enabled?, :github_import_configured?, :gitlab_import_enabled?, :gitlab_import_configured?, :bitbucket_import_enabled?, :bitbucket_import_configured?, :gitorious_import_enabled?, :google_code_import_enabled?, :fogbugz_import_enabled?, :git_import_enabled?, :gitlab_project_import_enabled?
 
   rescue_from Encoding::CompatibilityError do |exception|
     log_exception(exception)
@@ -319,6 +319,10 @@ class ApplicationController < ActionController::Base
     current_application_settings.import_sources.include?('git')
   end
 
+  def gitlab_project_import_enabled?
+    current_application_settings.import_sources.include?('gitlab_project')
+  end
+
   def two_factor_authentication_required?
     current_application_settings.require_two_factor_authentication
   end
diff --git a/app/controllers/import/gitlab_projects_controller.rb b/app/controllers/import/gitlab_projects_controller.rb
new file mode 100644
index 00000000000..f99aa490d3e
--- /dev/null
+++ b/app/controllers/import/gitlab_projects_controller.rb
@@ -0,0 +1,48 @@
+class Import::GitlabProjectsController < Import::BaseController
+  before_action :verify_gitlab_project_import_enabled
+
+  def new
+    @namespace_id = project_params[:namespace_id]
+    @namespace_name = Namespace.find(project_params[:namespace_id]).name
+    @path = project_params[:path]
+  end
+
+  def create
+    unless file_is_valid?
+      return redirect_back_or_default(options: { alert: "You need to upload a GitLab project export archive." })
+    end
+
+    @project = Gitlab::ImportExport::ProjectCreator.new(project_params[:namespace_id],
+                                                        current_user,
+                                                        File.expand_path(project_params[:file].path),
+                                                        project_params[:path]).execute
+
+    if @project.saved?
+      redirect_to(
+        project_path(@project),
+        notice: "Project '#{@project.name}' is being imported."
+      )
+    else
+      redirect_to(
+        new_import_gitlab_project_path,
+        alert: "Project could not be imported: #{@project.errors.full_messages.join(', ')}"
+      )
+    end
+  end
+
+  private
+
+  def file_is_valid?
+    project_params[:file] && project_params[:file].respond_to?(:read)
+  end
+
+  def verify_gitlab_project_import_enabled
+    render_404 unless gitlab_project_import_enabled?
+  end
+
+  def project_params
+    params.permit(
+      :path, :namespace_id, :file
+    )
+  end
+end
diff --git a/app/controllers/projects_controller.rb b/app/controllers/projects_controller.rb
index 482c11cf23c..8044c637825 100644
--- a/app/controllers/projects_controller.rb
+++ b/app/controllers/projects_controller.rb
@@ -7,7 +7,7 @@ class ProjectsController < Projects::ApplicationController
   before_action :assign_ref_vars, :tree, only: [:show], if: :repo_exists?
 
   # Authorize
-  before_action :authorize_admin_project!, only: [:edit, :update, :housekeeping]
+  before_action :authorize_admin_project!, only: [:edit, :update, :housekeeping, :download_export, :export, :remove_export, :generate_new_export]
   before_action :event_filter, only: [:show, :activity]
 
   layout :determine_layout
@@ -186,6 +186,48 @@ class ProjectsController < Projects::ApplicationController
     )
   end
 
+  def export
+    @project.add_export_job(current_user: current_user)
+
+    redirect_to(
+      edit_project_path(@project),
+      notice: "Project export started. A download link will be sent by email."
+    )
+  end
+
+  def download_export
+    export_project_path = @project.export_project_path
+
+    if export_project_path
+      send_file export_project_path, disposition: 'attachment'
+    else
+      redirect_to(
+        edit_project_path(@project),
+        alert: "Project export link has expired. Please generate a new export from your project settings."
+      )
+    end
+  end
+
+  def remove_export
+    if @project.remove_exports
+      flash[:notice] = "Project export has been deleted."
+    else
+      flash[:alert] = "Project export could not be deleted."
+    end
+    redirect_to(edit_project_path(@project))
+  end
+
+  def generate_new_export
+    if @project.remove_exports
+      export
+    else
+      redirect_to(
+        edit_project_path(@project),
+        alert: "Project export could not be deleted."
+      )
+    end
+  end
+
   def toggle_star
     current_user.toggle_star(@project)
     @project.reload
diff --git a/app/mailers/emails/projects.rb b/app/mailers/emails/projects.rb
index 689fb3e0ffb..e0af7081411 100644
--- a/app/mailers/emails/projects.rb
+++ b/app/mailers/emails/projects.rb
@@ -9,6 +9,19 @@ module Emails
            subject: subject("Project was moved"))
     end
 
+    def project_was_exported_email(current_user, project)
+      @project = project
+      mail(to: current_user.notification_email,
+           subject: subject("Project was exported"))
+    end
+
+    def project_was_not_exported_email(current_user, project, errors)
+      @project = project
+      @errors = errors
+      mail(to: current_user.notification_email,
+           subject: subject("Project export error"))
+    end
+
     def repository_push_email(project_id, opts = {})
       @message =
         Gitlab::Email::Message::RepositoryPush.new(self, project_id, opts)
diff --git a/app/models/application_setting.rb b/app/models/application_setting.rb
index a744f937918..d914b0b26eb 100644
--- a/app/models/application_setting.rb
+++ b/app/models/application_setting.rb
@@ -123,7 +123,7 @@ class ApplicationSetting < ActiveRecord::Base
       default_project_visibility: Settings.gitlab.default_projects_features['visibility_level'],
       default_snippet_visibility: Settings.gitlab.default_projects_features['visibility_level'],
       restricted_signup_domains: Settings.gitlab['restricted_signup_domains'],
-      import_sources: ['github','bitbucket','gitlab','gitorious','google_code','fogbugz','git'],
+      import_sources: %w[github bitbucket gitlab gitorious google_code fogbugz git gitlab_project],
       shared_runners_enabled: Settings.gitlab_ci['shared_runners_enabled'],
       max_artifacts_size: Settings.artifacts['max_size'],
       require_two_factor_authentication: false,
diff --git a/app/models/ci/pipeline.rb b/app/models/ci/pipeline.rb
index a5f2ac59001..5b264ecffc5 100644
--- a/app/models/ci/pipeline.rb
+++ b/app/models/ci/pipeline.rb
@@ -170,6 +170,10 @@ module Ci
       builds.where.not(environment: nil).success.pluck(:environment).uniq
     end
 
+    def notes
+      Note.for_commit_id(sha)
+    end
+
     private
 
     def build_builds_for_stages(stages, user, status, trigger_request)
diff --git a/app/models/commit_status.rb b/app/models/commit_status.rb
index e53c483b904..ab13db4b297 100644
--- a/app/models/commit_status.rb
+++ b/app/models/commit_status.rb
@@ -1,5 +1,6 @@
 class CommitStatus < ActiveRecord::Base
   include Statuseable
+  include Importable
 
   self.table_name = 'ci_builds'
 
@@ -7,7 +8,7 @@ class CommitStatus < ActiveRecord::Base
   belongs_to :pipeline, class_name: 'Ci::Pipeline', foreign_key: :commit_id, touch: true
   belongs_to :user
 
-  validates :pipeline, presence: true
+  validates :pipeline, presence: true, unless: :importing?
 
   validates_presence_of :name
 
diff --git a/app/models/concerns/importable.rb b/app/models/concerns/importable.rb
new file mode 100644
index 00000000000..019ef755849
--- /dev/null
+++ b/app/models/concerns/importable.rb
@@ -0,0 +1,6 @@
+module Importable
+  extend ActiveSupport::Concern
+
+  attr_accessor :importing
+  alias_method :importing?, :importing
+end
diff --git a/app/models/member.rb b/app/models/member.rb
index cea6d259760..4ee3f1bb5c2 100644
--- a/app/models/member.rb
+++ b/app/models/member.rb
@@ -1,5 +1,6 @@
 class Member < ActiveRecord::Base
   include Sortable
+  include Importable
   include Gitlab::Access
 
   attr_accessor :raw_invite_token
@@ -41,11 +42,11 @@ class Member < ActiveRecord::Base
 
   before_validation :generate_invite_token, on: :create, if: -> (member) { member.invite_email.present? }
 
-  after_create :send_invite, if: :invite?
-  after_create :send_request, if: :request?
-  after_create :create_notification_setting, unless: :pending?
-  after_create :post_create_hook, unless: :pending?
-  after_update :post_update_hook, unless: :pending?
+  after_create :send_invite, if: :invite?, unless: :importing?
+  after_create :send_request, if: :request?, unless: :importing?
+  after_create :create_notification_setting, unless: [:pending?, :importing?]
+  after_create :post_create_hook, unless: [:pending?, :importing?]
+  after_update :post_update_hook, unless: [:pending?, :importing?]
   after_destroy :post_destroy_hook, unless: :pending?
   after_destroy :post_decline_request, if: :request?
 
diff --git a/app/models/merge_request.rb b/app/models/merge_request.rb
index 7b8858b24d6..73bf182ec9f 100644
--- a/app/models/merge_request.rb
+++ b/app/models/merge_request.rb
@@ -4,6 +4,7 @@ class MergeRequest < ActiveRecord::Base
   include Referable
   include Sortable
   include Taskable
+  include Importable
 
   belongs_to :target_project, foreign_key: :target_project_id, class_name: "Project"
   belongs_to :source_project, foreign_key: :source_project_id, class_name: "Project"
@@ -13,7 +14,7 @@ class MergeRequest < ActiveRecord::Base
 
   serialize :merge_params, Hash
 
-  after_create :create_merge_request_diff
+  after_create :create_merge_request_diff, unless: :importing
   after_update :update_merge_request_diff
 
   delegate :commits, :diffs, :real_size, to: :merge_request_diff, prefix: nil
@@ -95,12 +96,12 @@ class MergeRequest < ActiveRecord::Base
     end
   end
 
-  validates :source_project, presence: true, unless: :allow_broken
+  validates :source_project, presence: true, unless: [:allow_broken, :importing?]
   validates :source_branch, presence: true
   validates :target_project, presence: true
   validates :target_branch, presence: true
   validates :merge_user, presence: true, if: :merge_when_build_succeeds?
-  validate :validate_branches, unless: :allow_broken
+  validate :validate_branches, unless: [:allow_broken, :importing?]
   validate :validate_fork
 
   scope :by_branch, ->(branch_name) { where("(source_branch LIKE :branch) OR (target_branch LIKE :branch)", branch: branch_name) }
diff --git a/app/models/merge_request_diff.rb b/app/models/merge_request_diff.rb
index 7d5103748f5..aca377cc600 100644
--- a/app/models/merge_request_diff.rb
+++ b/app/models/merge_request_diff.rb
@@ -1,5 +1,6 @@
 class MergeRequestDiff < ActiveRecord::Base
   include Sortable
+  include Importable
 
   # Prevent store of diff if commits amount more then 500
   COMMITS_SAFE_SIZE = 100
@@ -22,7 +23,7 @@ class MergeRequestDiff < ActiveRecord::Base
   serialize :st_commits
   serialize :st_diffs
 
-  after_create :reload_content
+  after_create :reload_content, unless: :importing?
 
   def reload_content
     reload_commits
diff --git a/app/models/note.rb b/app/models/note.rb
index 4b6748053ff..8d164647550 100644
--- a/app/models/note.rb
+++ b/app/models/note.rb
@@ -4,6 +4,7 @@ class Note < ActiveRecord::Base
   include Participable
   include Mentionable
   include Awardable
+  include Importable
 
   default_value_for :system, false
 
@@ -28,11 +29,11 @@ class Note < ActiveRecord::Base
   validates :attachment, file_size: { maximum: :max_attachment_size }
 
   validates :noteable_type, presence: true
-  validates :noteable_id, presence: true, unless: :for_commit?
+  validates :noteable_id, presence: true, unless: [:for_commit?, :importing?]
   validates :commit_id, presence: true, if: :for_commit?
   validates :author, presence: true
 
-  validate unless: :for_commit? do |note|
+  validate unless: [:for_commit?, :importing?] do |note|
     unless note.noteable.try(:project) == note.project
       errors.add(:invalid_project, 'Note and noteable project mismatch')
     end
diff --git a/app/models/project.rb b/app/models/project.rb
index 8eef22356e2..ca3bc04e2dd 100644
--- a/app/models/project.rb
+++ b/app/models/project.rb
@@ -367,6 +367,11 @@ class Project < ActiveRecord::Base
 
       joins(join_body).reorder('join_note_counts.amount DESC')
     end
+
+    # Deletes gitlab project export files older than 24 hours
+    def remove_gitlab_exports!
+      Gitlab::Popen.popen(%W(find #{Gitlab::ImportExport.storage_path} -not -path #{Gitlab::ImportExport.storage_path} -mmin +1440 -delete))
+    end
   end
 
   def team
@@ -470,7 +475,7 @@ class Project < ActiveRecord::Base
   end
 
   def import?
-    external_import? || forked?
+    external_import? || forked? || gitlab_project_import?
   end
 
   def no_import?
@@ -501,6 +506,10 @@ class Project < ActiveRecord::Base
     Gitlab::UrlSanitizer.new(import_url).masked_url
   end
 
+  def gitlab_project_import?
+    import_type == 'gitlab_project'
+  end
+
   def check_limit
     unless creator.can_create_project? or namespace.kind == 'group'
       projects_limit = creator.projects_limit
@@ -1096,4 +1105,27 @@ class Project < ActiveRecord::Base
   ensure
     @errors = original_errors
   end
+
+  def add_export_job(current_user:)
+    job_id = ProjectExportWorker.perform_async(current_user.id, self.id)
+
+    if job_id
+      Rails.logger.info "Export job started for project ID #{self.id} with job ID #{job_id}"
+    else
+      Rails.logger.error "Export job failed to start for project ID #{self.id}"
+    end
+  end
+
+  def export_path
+    File.join(Gitlab::ImportExport.storage_path, path_with_namespace)
+  end
+
+  def export_project_path
+    Dir.glob("#{export_path}/*export.tar.gz").max_by { |f| File.ctime(f) }
+  end
+
+  def remove_exports
+    _, status = Gitlab::Popen.popen(%W(find #{export_path} -not -path #{export_path} -delete))
+    status.zero?
+  end
 end
diff --git a/app/services/notification_service.rb b/app/services/notification_service.rb
index f804ac171c4..e70b400829a 100644
--- a/app/services/notification_service.rb
+++ b/app/services/notification_service.rb
@@ -266,6 +266,14 @@ class NotificationService
     end
   end
 
+  def project_exported(project, current_user)
+    mailer.project_was_exported_email(current_user, project).deliver_later
+  end
+
+  def project_not_exported(project, current_user, errors)
+    mailer.project_was_not_exported_email(current_user, project, errors).deliver_later
+  end
+
   protected
 
   # Get project users with WATCH notification level
diff --git a/app/services/projects/create_service.rb b/app/services/projects/create_service.rb
index 61cac5419ad..55956be2844 100644
--- a/app/services/projects/create_service.rb
+++ b/app/services/projects/create_service.rb
@@ -80,16 +80,18 @@ module Projects
     def after_create_actions
       log_info("#{@project.owner.name} created a new project \"#{@project.name_with_namespace}\"")
 
-      @project.create_wiki if @project.wiki_enabled?
+      unless @project.gitlab_project_import?
+        @project.create_wiki if @project.wiki_enabled?
 
-      @project.build_missing_services
+        @project.build_missing_services
 
-      @project.create_labels
+        @project.create_labels
+      end
 
       event_service.create_project(@project, current_user)
       system_hook_service.execute_hooks_for(@project, :create)
 
-      unless @project.group
+      unless @project.group || @project.gitlab_project_import?
         @project.team << [current_user, :master, current_user]
       end
     end
diff --git a/app/services/projects/import_export/export_service.rb b/app/services/projects/import_export/export_service.rb
new file mode 100644
index 00000000000..d6752377ce5
--- /dev/null
+++ b/app/services/projects/import_export/export_service.rb
@@ -0,0 +1,57 @@
+module Projects
+  module ImportExport
+    class ExportService < BaseService
+
+      def execute(_options = {})
+        @shared = Gitlab::ImportExport::Shared.new(relative_path: File.join(project.path_with_namespace, 'work'))
+        save_all
+      end
+
+      private
+
+      def save_all
+        if [version_saver, project_tree_saver, uploads_saver, repo_saver, wiki_repo_saver].all?(&:save)
+          Gitlab::ImportExport::Saver.save(shared: @shared)
+          notify_success
+        else
+          cleanup_and_notify
+        end
+      end
+
+      def version_saver
+        Gitlab::ImportExport::VersionSaver.new(shared: @shared)
+      end
+
+      def project_tree_saver
+        Gitlab::ImportExport::ProjectTreeSaver.new(project: project, shared: @shared)
+      end
+
+      def uploads_saver
+        Gitlab::ImportExport::UploadsSaver.new(project: project, shared: @shared)
+      end
+
+      def repo_saver
+        Gitlab::ImportExport::RepoSaver.new(project: project, shared: @shared)
+      end
+
+      def wiki_repo_saver
+        Gitlab::ImportExport::WikiRepoSaver.new(project: project, shared: @shared)
+      end
+
+      def cleanup_and_notify
+        FileUtils.rm_rf(@shared.export_path)
+
+        notify_error
+        raise Gitlab::ImportExport::Error.new(@shared.errors.join(', '))
+      end
+
+      def notify_success
+        notification_service.project_exported(@project, @current_user)
+      end
+
+      def notify_error
+        notification_service.project_not_exported(@project, @current_user, @shared.errors.join(', '))
+      end
+    end
+  end
+end
diff --git a/app/services/projects/import_service.rb b/app/services/projects/import_service.rb
index c4838d31f2f..9159ec08959 100644
--- a/app/services/projects/import_service.rb
+++ b/app/services/projects/import_service.rb
@@ -9,26 +9,31 @@ module Projects
       'fogbugz',
       'gitlab',
       'github',
-      'google_code'
+      'google_code',
+      'gitlab_project'
     ]
 
     def execute
-      if unknown_url?
-        # In this case, we only want to import issues, not a repository.
-        create_repository
-      else
-        import_repository
-      end
+      add_repository_to_project unless project.gitlab_project_import?
 
       import_data
 
       success
-    rescue Error => e
+    rescue => e
       error(e.message)
     end
 
     private
 
+    def add_repository_to_project
+      if unknown_url?
+        # In this case, we only want to import issues, not a repository.
+        create_repository
+      else
+        import_repository
+      end
+    end
+
     def create_repository
       unless project.create_repository
         raise Error, 'The repository could not be created.'
@@ -46,7 +51,7 @@ module Projects
     def import_data
       return unless has_importer?
 
-      project.repository.before_import
+      project.repository.before_import unless project.gitlab_project_import?
 
       unless importer.execute
         raise Error, 'The remote data could not be imported.'
@@ -58,6 +63,8 @@ module Projects
     end
 
     def importer
+      return Gitlab::ImportExport::Importer.new(project) if @project.gitlab_project_import?
+
       class_name = "Gitlab::#{project.import_type.camelize}Import::Importer"
       class_name.constantize.new(project)
     end
diff --git a/app/views/import/gitlab_projects/new.html.haml b/app/views/import/gitlab_projects/new.html.haml
new file mode 100644
index 00000000000..44e2653ca4a
--- /dev/null
+++ b/app/views/import/gitlab_projects/new.html.haml
@@ -0,0 +1,25 @@
+- page_title "GitLab Import"
+- header_title "Projects", root_path
+%h3.page-title
+  = icon('gitlab')
+  Import an exported GitLab project
+%hr
+
+= form_tag import_gitlab_project_path, class: 'form-horizontal', multipart: true do
+  %p
+    Project will be imported as
+    %strong
+      #{@namespace_name}/#{@path}
+
+  %p
+    To move or copy an entire GitLab project from another GitLab installation to this one, navigate to the original project's settings page, generate an export file, and upload it here.
+  .form-group
+    = hidden_field_tag :namespace_id, @namespace_id
+    = hidden_field_tag :path, @path
+    = label_tag :file, class: 'control-label' do
+      %span GitLab project export
+    .col-sm-10
+      = file_field_tag :file, class: ''
+
+  .form-actions
+    = submit_tag 'Import project', class: 'btn btn-create'
diff --git a/app/views/notify/project_was_exported_email.html.haml b/app/views/notify/project_was_exported_email.html.haml
new file mode 100644
index 00000000000..b28fea35ad5
--- /dev/null
+++ b/app/views/notify/project_was_exported_email.html.haml
@@ -0,0 +1,8 @@
+%p
+  Project #{@project.name} was exported successfully.
+%p
+  The project export can be downloaded from:
+  = link_to download_export_namespace_project_url(@project.namespace, @project) do
+    = @project.name_with_namespace + " export"
+%p
+  The download link will expire in 24 hours.
diff --git a/app/views/notify/project_was_exported_email.text.erb b/app/views/notify/project_was_exported_email.text.erb
new file mode 100644
index 00000000000..42c4d176876
--- /dev/null
+++ b/app/views/notify/project_was_exported_email.text.erb
@@ -0,0 +1,6 @@
+Project <%= @project.name %> was exported successfully.
+
+The project export can be downloaded from:
+<%= download_export_namespace_project_url(@project.namespace, @project) %>
+
+The download link will expire in 24 hours.
diff --git a/app/views/notify/project_was_not_exported_email.html.haml b/app/views/notify/project_was_not_exported_email.html.haml
new file mode 100644
index 00000000000..c9e9ade2cf1
--- /dev/null
+++ b/app/views/notify/project_was_not_exported_email.html.haml
@@ -0,0 +1,9 @@
+%p
+  Project #{@project.name} couldn't be exported.
+%p
+  The errors we encountered were:
+
+  %ul
+  - @errors.each do |error|
+    %li
+      error
diff --git a/app/views/notify/project_was_not_exported_email.text.erb b/app/views/notify/project_was_not_exported_email.text.erb
new file mode 100644
index 00000000000..a07f6edacf7
--- /dev/null
+++ b/app/views/notify/project_was_not_exported_email.text.erb
@@ -0,0 +1,6 @@
+Project <%= @project.name %> couldn't be exported.
+
+The errors we encountered were:
+
+- @errors.each do |error|
+<%= error %>
\ No newline at end of file
diff --git a/app/views/projects/edit.html.haml b/app/views/projects/edit.html.haml
index 8449fe1e4e0..27a94fe02dc 100644
--- a/app/views/projects/edit.html.haml
+++ b/app/views/projects/edit.html.haml
@@ -120,6 +120,42 @@
       = link_to 'Housekeeping', housekeeping_namespace_project_path(@project.namespace, @project),
           method: :post, class: "btn btn-save"
   %hr
+  .row.prepend-top-default
+    .col-lg-3
+      %h4.prepend-top-0
+        Export project
+      %p.append-bottom-0
+        %p
+          Export this project with all its related data in order to move your project to a new GitLab instance. Once the export is finished, you can import the file from the "New Project" page.
+        %p
+          Once the exported file is ready, you will receive a notification email with a download link.
+
+    .col-lg-9
+
+      - if @project.export_project_path
+        = link_to 'Download export',  download_export_namespace_project_path(@project.namespace, @project),
+                method: :get, class: "btn btn-default"
+        = link_to 'Generate new export',  generate_new_export_namespace_project_path(@project.namespace, @project),
+                method: :post, class: "btn btn-default"
+      - else
+        = link_to 'Export project', export_namespace_project_path(@project.namespace, @project),
+                method: :post, class: "btn btn-default"
+
+      .bs-callout.bs-callout-info
+        %p.append-bottom-0
+          %p
+            The following items will be exported:
+          %ul
+            %li Project and wiki repositories
+            %li Project uploads
+            %li Project configuration including web hooks and services
+            %li Issues with comments, merge requests with diffs and comments, labels, milestones, snippets, and other project entities
+          %p
+            The following items will NOT be exported:
+          %ul
+            %li Build traces and artifacts
+            %li LFS objects
+  %hr
   - if can? current_user, :archive_project, @project
     .row.prepend-top-default
       .col-lg-3
diff --git a/app/views/projects/imports/show.html.haml b/app/views/projects/imports/show.html.haml
index c0d1ce0d120..4d8ee562e6a 100644
--- a/app/views/projects/imports/show.html.haml
+++ b/app/views/projects/imports/show.html.haml
@@ -7,7 +7,7 @@
         Forking in progress.
       - else
         Import in progress.
-    - unless @project.forked?
+    - if @project.external_import?
       %p.monospace git clone --bare #{@project.safe_import_url}
     %p Please wait while we import the repository for you. Refresh at will.
     :javascript
diff --git a/app/views/projects/new.html.haml b/app/views/projects/new.html.haml
index 7e8b8f83467..3c1c6060504 100644
--- a/app/views/projects/new.html.haml
+++ b/app/views/projects/new.html.haml
@@ -84,7 +84,12 @@
               - if git_import_enabled?
                 = link_to "#", class: 'btn js-toggle-button import_git' do
                   %i.fa.fa-git
-                  %span Any repo by URL
+                  %span Repo by URL
+
+              - if gitlab_project_import_enabled?
+                = link_to new_import_gitlab_project_path, class: 'btn import_gitlab_project project-submit' do
+                  %i.fa.fa-gitlab
+                  %span GitLab export
 
           .js-toggle-content.hide
             = render "shared/import_form", f: f
@@ -115,6 +120,33 @@
     e.preventDefault();
     var import_modal = $(this).next(".modal").show();
   });
+
   $('.modal-header .close').bind('click', function() {
     $(".modal").hide();
   });
+
+  $('.import_gitlab_project').bind('click', function() {
+    var _href = $("a.import_gitlab_project").attr("href");
+    $(".import_gitlab_project").attr("href", _href + '?namespace_id=' + $("#project_namespace_id").val() + '&path=' + $("#project_path").val());
+  });
+
+  $('.import_gitlab_project').attr('disabled',true)
+  $('.import_gitlab_project').attr('title', 'Project path required.');
+
+  $('.import_gitlab_project').click(function( event ) {
+    if($('.import_gitlab_project').attr('disabled')) {
+      event.preventDefault();
+      new Flash("Please enter a path for the project to be imported to.");
+    }
+  });
+
+  $('#project_path').keyup(function(){
+    if($(this).val().length !=0) {
+      $('.import_gitlab_project').attr('disabled', false);
+      $('.import_gitlab_project').attr('title','');
+      $(".flash-container").html("")
+    } else {
+      $('.import_gitlab_project').attr('disabled',true);
+      $('.import_gitlab_project').attr('title', 'Project path required.');
+    }
+  })
diff --git a/app/workers/gitlab_remove_project_export_worker.rb b/app/workers/gitlab_remove_project_export_worker.rb
new file mode 100644
index 00000000000..1d91897d520
--- /dev/null
+++ b/app/workers/gitlab_remove_project_export_worker.rb
@@ -0,0 +1,9 @@
+class GitlabRemoveProjectExportWorker
+  include Sidekiq::Worker
+
+  sidekiq_options queue: :default
+
+  def perform
+    Project.remove_gitlab_exports!
+  end
+end
diff --git a/app/workers/project_export_worker.rb b/app/workers/project_export_worker.rb
new file mode 100644
index 00000000000..39f6037e077
--- /dev/null
+++ b/app/workers/project_export_worker.rb
@@ -0,0 +1,12 @@
+class ProjectExportWorker
+  include Sidekiq::Worker
+
+  sidekiq_options queue: :gitlab_shell, retry: true
+
+  def perform(current_user_id, project_id)
+    current_user = User.find(current_user_id)
+    project = Project.find(project_id)
+
+    ::Projects::ImportExport::ExportService.new(project, current_user).execute
+  end
+end