Merge branch 'store-lfs-on-object-storage-by-default' into 'master'

Store lfs on object storage by default

See merge request gitlab-org/gitlab-ee!4794

GITLAB_WORKHORSE_VERSION

-3.8.0
+4.0.0

Gemfile

@@ -107,16 +107,16 @@ gem 'carrierwave', '~> 1.2'
 gem 'dropzonejs-rails', '~> 0.7.1'
 
 # for backups
-gem 'fog-aws', '~> 1.4'
+gem 'fog-aws', '~> 2.0'
 gem 'fog-core', '~> 1.44'
-gem 'fog-google', '~> 0.5'
+gem 'fog-google', '~> 1.3'
 gem 'fog-local', '~> 0.3'
 gem 'fog-openstack', '~> 0.1'
 gem 'fog-rackspace', '~> 0.1.1'
 gem 'fog-aliyun', '~> 0.2.0'
 
 # for Google storage
-gem 'google-api-client', '~> 0.13.6'
+gem 'google-api-client', '~> 0.19'
 
 # for aws storage
 gem 'unf', '~> 0.1.4'

Gemfile.lock

@@ -213,7 +213,7 @@ GEM
     et-orbi (1.0.3)
       tzinfo
     eventmachine (1.0.8)
-    excon (0.57.1)
+    excon (0.60.0)
     execjs (2.6.0)
     expression_parser (0.9.0)
     factory_bot (4.8.2)
@@ -255,19 +255,20 @@ GEM
       fog-json (~> 1.0)
       ipaddress (~> 0.8)
       xml-simple (~> 1.1)
-    fog-aws (1.4.0)
+    fog-aws (2.0.1)
       fog-core (~> 1.38)
       fog-json (~> 1.0)
       fog-xml (~> 0.1)
       ipaddress (~> 0.8)
-    fog-core (1.44.3)
+    fog-core (1.45.0)
       builder
-      excon (~> 0.49)
+      excon (~> 0.58)
       formatador (~> 0.2)
-    fog-google (0.5.3)
+    fog-google (1.3.0)
       fog-core
       fog-json
       fog-xml
+      google-api-client (~> 0.19.1)
     fog-json (1.0.2)
       fog-core (~> 1.0)
       multi_json (~> 1.10)
@@ -358,9 +359,9 @@ GEM
       json
       multi_json
       request_store (>= 1.0)
-    google-api-client (0.13.6)
+    google-api-client (0.19.8)
       addressable (~> 2.5, >= 2.5.1)
-      googleauth (~> 0.5)
+      googleauth (>= 0.5, < 0.7.0)
       httpclient (>= 2.8.1, < 3.0)
       mime-types (~> 3.0)
       representable (~> 3.0)
@@ -531,7 +532,7 @@ GEM
     mini_portile2 (2.3.0)
     minitest (5.7.0)
     mousetrap-rails (1.4.6)
-    multi_json (1.12.2)
+    multi_json (1.13.1)
     multi_xml (0.6.0)
     multipart-post (2.0.0)
     mustermann (1.0.0)
@@ -1077,9 +1078,9 @@ DEPENDENCIES
   flipper-active_record (~> 0.11.0)
   flipper-active_support_cache_store (~> 0.11.0)
   fog-aliyun (~> 0.2.0)
-  fog-aws (~> 1.4)
+  fog-aws (~> 2.0)
   fog-core (~> 1.44)
-  fog-google (~> 0.5)
+  fog-google (~> 1.3)
   fog-local (~> 0.3)
   fog-openstack (~> 0.1)
   fog-rackspace (~> 0.1.1)
@@ -1101,7 +1102,7 @@ DEPENDENCIES
   gollum-lib (~> 4.2)
   gollum-rugged_adapter (~> 0.4.4)
   gon (~> 6.1.0)
-  google-api-client (~> 0.13.6)
+  google-api-client (~> 0.19)
   google-protobuf (= 3.5.1)
   gpgme
   grape (~> 1.0)

app/controllers/projects/lfs_storage_controller.rb

@@ -17,20 +17,23 @@ class Projects::LfsStorageController < Projects::GitHttpClientController
 
   def upload_authorize
     set_workhorse_internal_api_content_type
-    render json: Gitlab::Workhorse.lfs_upload_ok(oid, size)
+
+    authorized = LfsObjectUploader.workhorse_authorize
+    authorized.merge!(LfsOid: oid, LfsSize: size)
+
+    render json: authorized
   end
 
   def upload_finalize
-    unless tmp_filename
-      render_lfs_forbidden
-      return
-    end
-
-    if store_file(oid, size, tmp_filename)
+    if store_file!(oid, size)
       head 200
     else
       render plain: 'Unprocessable entity', status: 422
     end
+  rescue ActiveRecord::RecordInvalid
+    render_400
+  rescue ObjectStorage::RemoteStoreError
+    render_lfs_forbidden
   end
 
   private
@@ -51,38 +54,28 @@ class Projects::LfsStorageController < Projects::GitHttpClientController
     params[:size].to_i
   end
 
-  def tmp_filename
-    name = request.headers['X-Gitlab-Lfs-Tmp']
-    return if name.include?('/')
-    return unless oid.present? && name.start_with?(oid)
-
-    name
-  end
+  def store_file!(oid, size)
+    object = LfsObject.find_by(oid: oid, size: size)
+    unless object&.file&.exists?
+      object = create_file!(oid, size)
+    end
 
-  def store_file(oid, size, tmp_file)
-    # Define tmp_file_path early because we use it in "ensure"
-    tmp_file_path = File.join(LfsObjectUploader.workhorse_upload_path, tmp_file)
+    return unless object
 
-    object = LfsObject.find_or_create_by(oid: oid, size: size)
-    file_exists = object.file.exists? || move_tmp_file_to_storage(object, tmp_file_path)
-    file_exists && link_to_project(object)
-  ensure
-    FileUtils.rm_f(tmp_file_path)
+    link_to_project!(object)
   end
 
-  def move_tmp_file_to_storage(object, path)
-    File.open(path) do |f|
-      object.file = f
+  def create_file!(oid, size)
+    LfsObject.new(oid: oid, size: size).tap do |object|
+      object.file.store_workhorse_file!(params, :file)
+      object.save!
     end
-
-    object.file.store!
-    object.save
   end
 
-  def link_to_project(object)
+  def link_to_project!(object)
     if object && !object.projects.exists?(storage_project.id)
       object.projects << storage_project
-      object.save
+      object.save!
     end
   end
 end

app/models/lfs_object.rb

@@ -9,6 +9,12 @@ class LfsObject < ActiveRecord::Base
 
   mount_uploader :file, LfsObjectUploader
 
+  before_save :update_file_store
+
+  def update_file_store
+    self.file_store = file.object_store
+  end
+
   def project_allowed_access?(project)
     projects.exists?(project.lfs_storage_project.id)
   end

app/uploaders/lfs_object_uploader.rb

@@ -2,11 +2,6 @@ class LfsObjectUploader < GitlabUploader
   extend Workhorse::UploadPath
   include ObjectStorage::Concern
 
-  # LfsObject are in `tmp/upload` instead of `tmp/uploads`
-  def self.workhorse_upload_path
-    File.join(root, 'tmp/upload')
-  end
-
   storage_options Gitlab.config.lfs
 
   def filename

changelogs/unreleased/upgrade-workhorse-4-0-0.yml

+---
+title: Upgrade GitLab Workhorse to 4.0.0
+merge_request:
+author:
+type: added

config/gitlab.yml.example

@@ -794,7 +794,7 @@ test:
         provider: AWS # Only AWS supported at the moment
         aws_access_key_id: AWS_ACCESS_KEY_ID
         aws_secret_access_key: AWS_SECRET_ACCESS_KEY
-        region: eu-central-1
+        region: us-east-1
   artifacts:
     path: tmp/tests/artifacts
     enabled: true
@@ -808,7 +808,7 @@ test:
         provider: AWS # Only AWS supported at the moment
         aws_access_key_id: AWS_ACCESS_KEY_ID
         aws_secret_access_key: AWS_SECRET_ACCESS_KEY
-        region: eu-central-1
+        region: us-east-1
   uploads:
     storage_path: tmp/tests/public
     enabled: true
@@ -818,7 +818,7 @@ test:
         provider: AWS # Only AWS supported at the moment
         aws_access_key_id: AWS_ACCESS_KEY_ID
         aws_secret_access_key: AWS_SECRET_ACCESS_KEY
-        region: eu-central-1
+        region: us-east-1
   gitlab:
     host: localhost
     port: 80

config/initializers/1_settings.rb

@@ -397,6 +397,7 @@ Settings.lfs['storage_path'] = Settings.absolute(Settings.lfs['storage_path'] ||
 Settings.lfs['object_store'] ||= Settingslogic.new({})
 Settings.lfs['object_store']['enabled'] = false if Settings.lfs['object_store']['enabled'].nil?
 Settings.lfs['object_store']['remote_directory'] ||= nil
+Settings.lfs['object_store']['direct_upload'] = false if Settings.lfs['object_store']['direct_upload'].nil?
 Settings.lfs['object_store']['background_upload'] = true if Settings.lfs['object_store']['background_upload'].nil?
 Settings.lfs['object_store']['proxy_download'] = false if Settings.lfs['object_store']['proxy_download'].nil?
 # Convert upload connection settings to use string keys, to make Fog happy

config/initializers/carrierwave.rb

@@ -28,16 +28,4 @@ if File.exist?(aws_file)
     # when fog_public is false and provider is AWS or Google, defaults to 600
     config.fog_authenticated_url_expiration = 1 << 29
   end
-
-  # Mocking Fog requests, based on: https://github.com/carrierwaveuploader/carrierwave/wiki/How-to%3A-Test-Fog-based-uploaders
-  if Rails.env.test?
-    Fog.mock!
-    connection = ::Fog::Storage.new(
-      aws_access_key_id: AWS_CONFIG['access_key_id'],
-      aws_secret_access_key: AWS_CONFIG['secret_access_key'],
-      provider: 'AWS',
-      region: AWS_CONFIG['region']
-    )
-    connection.directories.create(key: AWS_CONFIG['bucket'])
-  end
 end

doc/workflow/lfs/lfs_administration.md

@@ -63,6 +63,7 @@ For source installations the following settings are nested under `lfs:` and then
 |---------|-------------|---------|
 | `enabled` | Enable/disable object storage | `false` |
 | `remote_directory` | The bucket name where LFS objects will be stored| |
+| `direct_upload` | Set to true to enable direct upload of LFS without the need of local shared storage. Option may be removed once we decide to support only single storage for all files. | `false` |
 | `background_upload` | Set to false to disable automatic upload. Option may be removed once upload is direct to S3 | `true` |
 | `proxy_download` | Set to false to disable proxying all files served. Option allows to reduce egress traffic as this allows clients to download directly from remote storage instead of proxying all data | `false` |
 | `connection` | Various connection options described below | |

ee/app/uploaders/object_storage.rb

@@ -10,6 +10,9 @@ module ObjectStorage
   UnknownStoreError = Class.new(StandardError)
   ObjectStorageUnavailable = Class.new(StandardError)
 
+  DIRECT_UPLOAD_TIMEOUT = 4.hours
+  TMP_UPLOAD_PATH = 'tmp/upload'.freeze
+
   module Store
     LOCAL = 1
     REMOTE = 2
@@ -124,6 +127,10 @@ module ObjectStorage
         object_store_options.enabled
       end
 
+      def direct_upload_enabled?
+        object_store_options.direct_upload
+      end
+
       def background_upload_enabled?
         object_store_options.background_upload
       end
@@ -151,6 +158,45 @@ module ObjectStorage
       def serialization_column(model_class, mount_point)
         model_class.uploader_options.dig(mount_point, :mount_on) || mount_point
       end
+
+      def workhorse_authorize
+        if options = workhorse_remote_upload_options
+          { RemoteObject: options }
+        else
+          { TempPath: workhorse_local_upload_path }
+        end
+      end
+
+      def workhorse_local_upload_path
+        File.join(self.root, TMP_UPLOAD_PATH)
+      end
+
+      def workhorse_remote_upload_options
+        return unless self.object_store_enabled?
+        return unless self.direct_upload_enabled?
+
+        id = [CarrierWave.generate_cache_id, SecureRandom.hex].join('-')
+        upload_path = File.join(TMP_UPLOAD_PATH, id)
+        connection = ::Fog::Storage.new(self.object_store_credentials)
+        expire_at = Time.now + DIRECT_UPLOAD_TIMEOUT
+        options = { 'Content-Type' => 'application/octet-stream' }
+
+        {
+          ID: id,
+          GetURL: connection.get_object_https_url(remote_store_path, upload_path, expire_at),
+          DeleteURL: connection.delete_object_url(remote_store_path, upload_path, expire_at),
+          StoreURL: connection.put_object_url(remote_store_path, upload_path, expire_at, options)
+        }
+      end
+    end
+
+    # allow to configure and overwrite the filename
+    def filename
+      @filename || super || file&.filename # rubocop:disable Gitlab/ModuleWithInstanceVariables
+    end
+
+    def filename=(filename)
+      @filename = filename # rubocop:disable Gitlab/ModuleWithInstanceVariables
     end
 
     def file_storage?
@@ -199,10 +245,6 @@ module ObjectStorage
       end
     end
 
-    def filename
-      super || file&.filename
-    end
-
     #
     # Move the file to another store
     #
@@ -263,6 +305,18 @@ module ObjectStorage
       }
     end
 
+    def store_workhorse_file!(params, identifier)
+      filename = params["#{identifier}.name"]
+
+      if remote_object_id = params["#{identifier}.remote_id"]
+        store_remote_file!(remote_object_id, filename)
+      elsif local_path = params["#{identifier}.path"]
+        store_local_file!(local_path, filename)
+      else
+        raise RemoteStoreError, 'Bad file'
+      end
+    end
+
     private
 
     def schedule_background_upload?
@@ -272,6 +326,38 @@ module ObjectStorage
         self.file_storage?
     end
 
+    def store_remote_file!(remote_object_id, filename)
+      raise RemoteStoreError, 'Missing filename' unless filename
+
+      file_path = File.join(TMP_UPLOAD_PATH, remote_object_id)
+      file_path = Pathname.new(file_path).cleanpath.to_s
+      raise RemoteStoreError, 'Bad file path' unless file_path.start_with?(TMP_UPLOAD_PATH + '/')
+
+      self.object_store = Store::REMOTE
+
+      # TODO:
+      # This should be changed to make use of `tmp/cache` mechanism
+      # instead of using custom upload directory,
+      # using tmp/cache makes this implementation way easier than it is today
+      CarrierWave::Storage::Fog::File.new(self, storage, file_path).tap do |file|
+        raise RemoteStoreError, 'Missing file' unless file.exists?
+
+        self.filename = filename
+        self.file = storage.store!(file)
+      end
+    end
+
+    def store_local_file!(local_path, filename)
+      raise RemoteStoreError, 'Missing filename' unless filename
+
+      root_path = File.realpath(self.class.workhorse_local_upload_path)
+      file_path = File.realpath(local_path)
+      raise RemoteStoreError, 'Bad file path' unless file_path.start_with?(root_path)
+
+      self.object_store = Store::LOCAL
+      self.store!(UploadedFile.new(file_path, filename))
+    end
+
     # this is a hack around CarrierWave. The #migrate method needs to be
     # able to force the current file to the migrated file upon success.
     def file=(file)

ee/changelogs/unreleased/store-lfs-on-object-storage-by-default.yml

+---
+title: Add support for direct uploading of LFS artifacts
+merge_request:
+author:
+type: added

ee/spec/support/stub_object_storage.rb

 module StubConfiguration
-  def stub_object_storage_uploader(config:, uploader:, remote_directory:, enabled: true, licensed: true, background_upload: false)
-    Fog.mock!
-
+  def stub_object_storage_uploader(
+    config:, uploader:, remote_directory:, enabled: true, licensed: true,
+    background_upload: false, direct_upload: false
+  )
     allow(config).to receive(:enabled) { enabled }
     allow(config).to receive(:background_upload) { background_upload }
+    allow(config).to receive(:direct_upload) { direct_upload }
 
     stub_licensed_features(object_storage: licensed) unless licensed == :skip
 
     return unless enabled
 
+    Fog.mock!
+
     ::Fog::Storage.new(uploader.object_store_credentials).tap do |connection|
       begin
         connection.directories.create(key: remote_directory)

lib/gitlab/workhorse.rb

@@ -53,14 +53,6 @@ module Gitlab
         params
       end
 
-      def lfs_upload_ok(oid, size)
-        {
-          StoreLFSPath: LfsObjectUploader.workhorse_upload_path,
-          LfsOid: oid,
-          LfsSize: size
-        }
-      end
-
       def artifact_upload_ok
         { TempPath: JobArtifactUploader.workhorse_upload_path }
       end

spec/lib/backup/manager_spec.rb

@@ -278,6 +278,10 @@ describe Backup::Manager do
       connection.directories.create(key: Gitlab.config.backup.upload.remote_directory)
     end
 
+    after do
+      Fog.unmock!
+    end
+
     context 'target path' do
       it 'uses the tar filename by default' do
         expect_any_instance_of(Fog::Collection).to receive(:create)

spec/requests/lfs_http_spec.rb

@@ -990,22 +990,61 @@ describe 'Git LFS API and storage' do
           end
 
           context 'and request is sent by gitlab-workhorse to authorize the request' do
-            before do
-              put_authorize
+            shared_examples 'a valid response' do
+              before do
+                put_authorize
+              end
+
+              it 'responds with status 200' do
+                expect(response).to have_gitlab_http_status(200)
+              end
+
+              it 'uses the gitlab-workhorse content type' do
+                expect(response.content_type.to_s).to eq(Gitlab::Workhorse::INTERNAL_API_CONTENT_TYPE)
+              end
             end
 
-            it 'responds with status 200' do
-              expect(response).to have_gitlab_http_status(200)
+            shared_examples 'a local file' do
+              it_behaves_like 'a valid response' do
+                it 'responds with status 200, location of lfs store and object details' do
+                  expect(json_response['TempPath']).to eq(LfsObjectUploader.workhorse_local_upload_path)
+                  expect(json_response['RemoteObject']).to be_nil
+                  expect(json_response['LfsOid']).to eq(sample_oid)
+                  expect(json_response['LfsSize']).to eq(sample_size)
+                end
+              end
             end
 
-            it 'uses the gitlab-workhorse content type' do
-              expect(response.content_type.to_s).to eq(Gitlab::Workhorse::INTERNAL_API_CONTENT_TYPE)
+            context 'when using local storage' do
+              it_behaves_like 'a local file'
             end
 
-            it 'responds with status 200, location of lfs store and object details' do
-              expect(json_response['StoreLFSPath']).to eq(LfsObjectUploader.workhorse_upload_path)
-              expect(json_response['LfsOid']).to eq(sample_oid)
-              expect(json_response['LfsSize']).to eq(sample_size)
+            context 'when using remote storage' do
+              context 'when direct upload is enabled' do
+                before do
+                  stub_lfs_object_storage(enabled: true, direct_upload: true)
+                end
+
+                it_behaves_like 'a valid response' do
+                  it 'responds with status 200, location of lfs remote store and object details' do
+                    expect(json_response['TempPath']).to be_nil
+                    expect(json_response['RemoteObject']).to have_key('ID')
+                    expect(json_response['RemoteObject']).to have_key('GetURL')
+                    expect(json_response['RemoteObject']).to have_key('StoreURL')
+                    expect(json_response['RemoteObject']).to have_key('DeleteURL')
+                    expect(json_response['LfsOid']).to eq(sample_oid)
+                    expect(json_response['LfsSize']).to eq(sample_size)
+                  end
+                end
+              end
+
+              context 'when direct upload is disabled' do
+                before do
+                  stub_lfs_object_storage(enabled: true, direct_upload: false)
+                end
+
+                it_behaves_like 'a local file'
+              end
             end
           end
 
@@ -1037,14 +1076,70 @@ describe 'Git LFS API and storage' do
             end
 
             context 'with object storage enabled' do
-              before do
-                stub_lfs_object_storage(background_upload: true)
+              context 'and direct upload enabled' do
+                let!(:fog_connection) do
+                  stub_lfs_object_storage(direct_upload: true)
+                end
+
+                ['123123', '../../123123'].each do |remote_id|
+                  context "with invalid remote_id: #{remote_id}" do
+                    subject do
+                      put_finalize_with_args('file.remote_id' => remote_id)
+                    end
+
+                    it 'responds with status 403' do
+                      subject
+
+                      expect(response).to have_gitlab_http_status(403)
+                    end
+                  end
+                end
+
+                context 'with valid remote_id' do
+                  before do
+                    fog_connection.directories.get('lfs-objects').files.create(
+                      key: 'tmp/upload/12312300',
+                      body: 'content'
+                    )
+                  end
+
+                  subject do
+                    put_finalize_with_args(
+                      'file.remote_id' => '12312300',
+                      'file.name' => 'name')
+                  end
+
+                  it 'responds with status 200' do
+                    subject
+
+                    expect(response).to have_gitlab_http_status(200)
+                  end
+
+                  it 'schedules migration of file to object storage' do
+                    subject
+
+                    expect(LfsObject.last.projects).to include(project)
+                  end
+
+                  it 'have valid file' do
+                    subject
+
+                    expect(LfsObject.last.file_store).to eq(ObjectStorage::Store::REMOTE)
+                    expect(LfsObject.last.file).to be_exists
+                  end
+                end
               end
 
-              it 'schedules migration of file to object storage' do
-                expect(ObjectStorage::BackgroundMoveWorker).to receive(:perform_async).with('LfsObjectUploader', 'LfsObject', :file, kind_of(Numeric))
+              context 'and background upload enabled' do
+                before do
+                  stub_lfs_object_storage(background_upload: true)
+                end
 
-                put_finalize(with_tempfile: true)
+                it 'schedules migration of file to object storage' do
+                  expect(ObjectStorage::BackgroundMoveWorker).to receive(:perform_async).with('LfsObjectUploader', 'LfsObject', :file, kind_of(Numeric))
+
+                  put_finalize(with_tempfile: true)
+                end
               end
             end
           end
@@ -1064,13 +1159,12 @@ describe 'Git LFS API and storage' do
           end
 
           context 'invalid tempfiles' do
-            it 'rejects slashes in the tempfile name (path traversal' do
-              put_finalize('foo/bar')
-              expect(response).to have_gitlab_http_status(403)
+            before do
+              lfs_object.destroy
             end
 
-            it 'rejects tempfile names that do not start with the oid' do
-              put_finalize("foo#{sample_oid}")
+            it 'rejects slashes in the tempfile name (path traversal)' do
+              put_finalize('../bar', with_tempfile: true)
               expect(response).to have_gitlab_http_status(403)
             end
           end
@@ -1160,7 +1254,7 @@ describe 'Git LFS API and storage' do
             end
 
             it 'with location of lfs store and object details' do
-              expect(json_response['StoreLFSPath']).to eq(LfsObjectUploader.workhorse_upload_path)
+              expect(json_response['TempPath']).to eq(LfsObjectUploader.workhorse_local_upload_path)
               expect(json_response['LfsOid']).to eq(sample_oid)
               expect(json_response['LfsSize']).to eq(sample_size)
             end
@@ -1263,10 +1357,24 @@ describe 'Git LFS API and storage' do
     end
 
     def put_finalize(lfs_tmp = lfs_tmp_file, with_tempfile: false)
-      setup_tempfile(lfs_tmp) if with_tempfile
+      upload_path = LfsObjectUploader.workhorse_local_upload_path
+      file_path = upload_path + '/' + lfs_tmp if lfs_tmp
+
+      if with_tempfile
+        FileUtils.mkdir_p(upload_path)
+        FileUtils.touch(file_path)
+      end
+
+      args = {
+        'file.path' => file_path,
+        'file.name' => File.basename(file_path)
+      }.compact
 
-      put "#{project.http_url_to_repo}/gitlab-lfs/objects/#{sample_oid}/#{sample_size}", nil,
-          headers.merge('X-Gitlab-Lfs-Tmp' => lfs_tmp).compact
+      put_finalize_with_args(args)
+    end
+
+    def put_finalize_with_args(args)
+      put "#{project.http_url_to_repo}/gitlab-lfs/objects/#{sample_oid}/#{sample_size}", args, headers
     end
 
     def lfs_tmp_file
@@ -1274,10 +1382,6 @@ describe 'Git LFS API and storage' do
     end
 
     def setup_tempfile(lfs_tmp)
-      upload_path = LfsObjectUploader.workhorse_upload_path
-
-      FileUtils.mkdir_p(upload_path)
-      FileUtils.touch(File.join(upload_path, lfs_tmp))
     end
   end
 

spec/uploaders/gitlab_uploader_spec.rb

@@ -27,7 +27,7 @@ describe GitlabUploader do
   describe '#file_cache_storage?' do
     context 'when file storage is used' do
       before do
-        uploader_class.cache_storage(:file)
+        expect(uploader_class).to receive(:cache_storage) { CarrierWave::Storage::File }
       end
 
       it { is_expected.to be_file_cache_storage }
@@ -35,7 +35,7 @@ describe GitlabUploader do
 
     context 'when is remote storage' do
       before do
-        uploader_class.cache_storage(:fog)
+        expect(uploader_class).to receive(:cache_storage) { CarrierWave::Storage::Fog }
       end
 
       it { is_expected.not_to be_file_cache_storage }