Clean up dynamic loading of object storage gems

config/initializers/direct_upload_support.rb

@@ -17,7 +17,7 @@ class DirectUploadsValidator
 
     raise ValidationError, "No provider configured for '#{uploader_type}'. #{supported_provider_text}" if provider.blank?
 
-    return if provider_loaded?(provider)
+    return if provider_supported?(provider)
 
     raise ValidationError, "Object storage provider '#{provider}' is not supported " \
                            "when 'direct_upload' is used for '#{uploader_type}'. #{supported_provider_text}"
@@ -25,12 +25,8 @@ class DirectUploadsValidator
 
   private
 
-  def provider_loaded?(provider)
-    return false unless SUPPORTED_DIRECT_UPLOAD_PROVIDERS.include?(provider)
-
-    require 'fog/azurerm' if provider == ObjectStorage::Config::AZURE_PROVIDER
-
-    true
+  def provider_supported?(provider)
+    SUPPORTED_DIRECT_UPLOAD_PROVIDERS.include?(provider)
   end
 
   def supported_provider_text

lib/backup/manager.rb

@@ -210,9 +210,7 @@ module Backup
 
     def object_storage_config
       @object_storage_config ||= begin
-        config = ObjectStorage::Config.new(Gitlab.config.backup.upload)
-        config.load_provider
-        config
+        ObjectStorage::Config.new(Gitlab.config.backup.upload)
       end
     end
 

lib/object_storage/config.rb

@@ -12,16 +12,6 @@ module ObjectStorage
       @options = options.to_hash.deep_symbolize_keys
     end
 
-    def load_provider
-      if aws?
-        require 'fog/aws'
-      elsif google?
-        require 'fog/google'
-      elsif azure?
-        require 'fog/azurerm'
-      end
-    end
-
     def credentials
       @credentials ||= options[:connection] || {}
     end

spec/initializers/carrierwave_patch_spec.rb

@@ -15,9 +15,6 @@ RSpec.describe 'CarrierWave::Storage::Fog::File' do
   subject { CarrierWave::Storage::Fog::File.new(uploader, storage, test_filename) }
 
   before do
-    require 'fog/azurerm'
-    require 'fog/aws'
-
     stub_object_storage(connection_params: connection_options, remote_directory: bucket_name)
 
     allow(uploader).to receive(:fog_directory).and_return(bucket_name)

spec/lib/object_storage/config_spec.rb

@@ -36,46 +36,6 @@ RSpec.describe ObjectStorage::Config do
 
   subject { described_class.new(raw_config.as_json) }
 
-  describe '#load_provider' do
-    before do
-      subject.load_provider
-    end
-
-    context 'with AWS' do
-      it 'registers AWS as a provider' do
-        expect(Fog.providers.keys).to include(:aws)
-      end
-    end
-
-    context 'with Google' do
-      let(:credentials) do
-        {
-          provider: 'Google',
-          google_storage_access_key_id: 'GOOGLE_ACCESS_KEY_ID',
-          google_storage_secret_access_key: 'GOOGLE_SECRET_ACCESS_KEY'
-        }
-      end
-
-      it 'registers Google as a provider' do
-        expect(Fog.providers.keys).to include(:google)
-      end
-    end
-
-    context 'with Azure' do
-      let(:credentials) do
-        {
-          provider: 'AzureRM',
-          azure_storage_account_name: 'azuretest',
-          azure_storage_access_key: 'ABCD1234'
-        }
-      end
-
-      it 'registers AzureRM as a provider' do
-        expect(Fog.providers.keys).to include(:azurerm)
-      end
-    end
-  end
-
   describe '#credentials' do
     it { expect(subject.credentials).to eq(credentials) }
   end

spec/lib/object_storage/direct_upload_spec.rb

@@ -201,10 +201,6 @@ RSpec.describe ObjectStorage::DirectUpload do
     end
 
     shared_examples 'a valid AzureRM upload' do
-      before do
-        require 'fog/azurerm'
-      end
-
       it_behaves_like 'a valid upload'
 
       it 'enables the Workhorse client' do