Reintroduce Command#protected_ref?

lib/gitlab/ci/pipeline/chain/build.rb

@@ -17,6 +17,7 @@ module Gitlab
               user: @command.current_user,
               pipeline_schedule: @command.schedule,
               merge_request: @command.merge_request,
+              protected: @command.protected_ref?,
               variables_attributes: Array(@command.variables_attributes)
             )

lib/gitlab/ci/pipeline/chain/command.rb

@@ -51,6 +51,12 @@ module Gitlab
           def before_sha
             self[:before_sha] || checkout_sha || Gitlab::Git::BLANK_SHA
           end
+
+          def protected_ref?
+            strong_memoize(:protected_ref) do
+              project.protected_for?(origin_ref)
+            end
+          end
         end
       end
     end

lib/gitlab/ci/pipeline/chain/populate.rb

@@ -18,11 +18,6 @@ module Gitlab
             #
             @command.seeds_block&.call(pipeline)
-            ##
-            # Populate pipeline protected status
-            #
-            pipeline.protected = @command.project.protected_for?(@command.origin_ref)
-
             ##
             # Populate pipeline with all stages, and stages with builds.
             #

lib/gitlab/ci/pipeline/chain/validate/abilities.rb

@@ -31,7 +31,7 @@ module Gitlab
               if current_user
                 allowed_to_create?
               else # legacy triggers don't have a corresponding user
-                !@command.project.protected_for?(@command.origin_ref)
+                !@command.protected_ref?
               end
             end

lib/gitlab/git.rb

@@ -54,11 +54,11 @@ module Gitlab
       end
       def tag_ref?(ref)
-        ref.start_with?(TAG_REF_PREFIX)
+        ref =~ %r{#{TAG_REF_PREFIX}\w+}
       end
       def branch_ref?(ref)
-        ref.start_with?(BRANCH_REF_PREFIX)
+        ref =~ %r{#{BRANCH_REF_PREFIX}\w+}
       end
       def blank_ref?(ref)

spec/lib/gitlab/ci/pipeline/chain/command_spec.rb

@@ -160,4 +160,26 @@ describe Gitlab::Ci::Pipeline::Chain::Command do
       end
     end
   end
+
+  describe '#protected_ref?' do
+    let(:command) { described_class.new(project: project, origin_ref: 'my-branch') }
+
+    subject { command.protected_ref? }
+
+    context 'when a ref is protected' do
+      before do
+        expect_any_instance_of(Project).to receive(:protected_for?).with('my-branch').and_return(true)
+      end
+
+      it { is_expected.to eq(true) }
+    end
+
+    context 'when a ref is unprotected' do
+      before do
+        expect_any_instance_of(Project).to receive(:protected_for?).with('my-branch').and_return(false)
+      end
+
+      it { is_expected.to eq(false) }
+    end
+  end
 end

spec/lib/gitlab/ci/pipeline/seed/build_spec.rb

 require 'spec_helper'
 describe Gitlab::Ci::Pipeline::Seed::Build do
-  let(:pipeline) { create(:ci_empty_pipeline) }
+  let(:project) { create(:project, :repository) }
+  let(:pipeline) { create(:ci_empty_pipeline, project: project) }
   let(:attributes) do
     { name: 'rspec',

spec/lib/gitlab/ci/pipeline/seed/stage_spec.rb

 require 'spec_helper'
 describe Gitlab::Ci::Pipeline::Seed::Stage do
-  let(:pipeline) { create(:ci_empty_pipeline) }
+  let(:project) { create(:project, :repository) }
+  let(:pipeline) { create(:ci_empty_pipeline, project: project) }
   let(:attributes) do
     { name: 'test',