1 files changed, 25 insertions, 0 deletions
diff --git a/lib/gitlab/ci/build/policy/changes.rb b/lib/gitlab/ci/build/policy/changes.rb
new file mode 100644
index 00000000000..7bf51519752
--- /dev/null
+++ b/lib/gitlab/ci/build/policy/changes.rb
@@ -0,0 +1,25 @@
+# frozen_string_literal: true
+
+module Gitlab
+  module Ci
+    module Build
+      module Policy
+        class Changes < Policy::Specification
+          def initialize(globs)
+            @globs = Array(globs)
+          end
+
+          def satisfied_by?(pipeline, seed)
+            return true unless pipeline.branch_updated?
+
+            pipeline.modified_paths.any? do |path|
+              @globs.any? do |glob|
+                File.fnmatch?(glob, path, File::FNM_PATHNAME | File::FNM_DOTMATCH)
+              end
+            end
+          end
+        end
+      end
+    end
+  end
+end