1 files changed, 100 insertions, 0 deletions
diff --git a/lib/gitlab/ci/config/external/file/component.rb b/lib/gitlab/ci/config/external/file/component.rb
new file mode 100644
index 00000000000..33e7724bf9b
--- /dev/null
+++ b/lib/gitlab/ci/config/external/file/component.rb
@@ -0,0 +1,100 @@
+# frozen_string_literal: true
+
+module Gitlab
+  module Ci
+    class Config
+      module External
+        module File
+          class Component < Base
+            extend ::Gitlab::Utils::Override
+            include Gitlab::Utils::StrongMemoize
+
+            def initialize(params, context)
+              @location = params[:component]
+              super
+            end
+
+            def matching?
+              super && ::Feature.enabled?(:ci_include_components, context.project)
+            end
+
+            def content
+              return unless component_result.success?
+
+              component_result.payload.fetch(:content)
+            end
+            strong_memoize_attr :content
+
+            def metadata
+              super.merge(
+                type: :component,
+                location: masked_location,
+                blob: masked_blob,
+                raw: nil,
+                extra: {}
+              )
+            end
+
+            def validate_location!
+              return unless invalid_location_type?
+
+              errors.push("Included file `#{masked_location}` needs to be a string")
+            end
+
+            def validate_context!
+              return if context.project&.repository
+
+              errors.push('Unable to use components outside of a project context')
+            end
+
+            def validate_content!
+              return if content.present?
+
+              errors.push(component_result.message)
+            end
+
+            private
+
+            attr_reader :path, :version
+
+            def component_result
+              ::Ci::Components::FetchService.new(
+                address: location,
+                current_user: context.user
+              ).execute
+            end
+            strong_memoize_attr :component_result
+
+            override :expand_context_attrs
+            def expand_context_attrs
+              {
+                project: component_path.project,
+                sha: component_path.sha,
+                user: context.user,
+                variables: context.variables
+              }
+            end
+
+            def masked_blob
+              return unless component_path
+
+              context.mask_variables_from(
+                Gitlab::Routing.url_helpers.project_blob_url(
+                  component_path.project,
+                  ::File.join(component_path.sha, component_path.project_file_path))
+              )
+            end
+            strong_memoize_attr :masked_blob
+
+            def component_path
+              return unless component_result.success?
+
+              component_result.payload.fetch(:path)
+            end
+            strong_memoize_attr :component_path
+          end
+        end
+      end
+    end
+  end
+end