1 files changed, 43 insertions, 0 deletions
diff --git a/app/models/blob_viewer/go_mod.rb b/app/models/blob_viewer/go_mod.rb
new file mode 100644
index 00000000000..ae57e2c0526
--- /dev/null
+++ b/app/models/blob_viewer/go_mod.rb
@@ -0,0 +1,43 @@
+# frozen_string_literal: true
+
+module BlobViewer
+  class GoMod < DependencyManager
+    include ServerSide
+    include Gitlab::Utils::StrongMemoize
+
+    MODULE_REGEX = /
+      \A (?# beginning of file)
+      module\s+ (?# module directive)
+      (?<name>.*?) (?# module name)
+      \s*(?:\/\/.*)? (?# comment)
+      (?:\n|\z) (?# newline or end of file)
+    /x.freeze
+
+    self.file_types = %i(go_mod go_sum)
+
+    def manager_name
+      'Go Modules'
+    end
+
+    def manager_url
+      'https://golang.org/ref/mod'
+    end
+
+    def package_type
+      'go'
+    end
+
+    def package_name
+      strong_memoize(:package_name) do
+        next if blob.name != 'go.mod'
+        next unless match = MODULE_REGEX.match(blob.data)
+
+        match[:name]
+      end
+    end
+
+    def package_url
+      Gitlab::Golang.package_url(package_name)
+    end
+  end
+end