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-rw-r--r--config/initializers/rugged_use_gitlab_git_attributes.rb25
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diff --git a/config/initializers/rugged_use_gitlab_git_attributes.rb b/config/initializers/rugged_use_gitlab_git_attributes.rb
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+# We don't want to ever call Rugged::Repository#fetch_attributes, because it has
+# a lot of I/O overhead:
+# <https://gitlab.com/gitlab-org/gitlab_git/commit/340e111e040ae847b614d35b4d3173ec48329015>
+#
+# While we don't do this from within the GitLab source itself, the Linguist gem
+# has a dependency on Rugged and uses the gitattributes file when calculating
+# repository-wide language statistics:
+# <https://github.com/github/linguist/blob/v4.7.0/lib/linguist/lazy_blob.rb#L33-L36>
+#
+# The options passed by Linguist are those assumed by Gitlab::Git::Attributes
+# anyway, and there is no great efficiency gain from just fetching the listed
+# attributes with our implementation, so we ignore the additional arguments.
+#
+module Rugged
+ class Repository
+ module UseGitlabGitAttributes
+ def fetch_attributes(name, *)
+ @attributes ||= Gitlab::Git::Attributes.new(path)
+ @attributes.attributes(name)
+ end
+ end
+
+ prepend UseGitlabGitAttributes
+ end
+end