Make Gitlab::Ggit::Repository#submodules private

app/models/repository.rb

@@ -605,22 +605,6 @@ class Repository
     end
   end
 
-  # Returns url for submodule
-  #
-  # Ex.
-  #   @repository.submodule_url_for('master', 'rack')
-  #   # => git@localhost:rack.git
-  #
-  def submodule_url_for(ref, path)
-    if submodules(ref).any?
-      submodule = submodules(ref)[path]
-
-      if submodule
-        submodule['url']
-      end
-    end
-  end
-
   def last_commit_for_path(sha, path)
     sha = last_commit_id_for_path(sha, path)
     commit(sha)

lib/gitlab/git/repository.rb

@@ -613,32 +613,20 @@ module Gitlab
         rugged.rev_parse(oid_or_ref_name)
       end
 
-      # Return hash with submodules info for this repository
+      # Returns url for submodule
       #
       # Ex.
-      #   {
-      #     "current_path/rack"  => {
-      #       "name" => "original_path/rack",
-      #       "id" => "c67be4624545b4263184c4a0e8f887efd0a66320",
-      #       "url" => "git://github.com/chneukirchen/rack.git"
-      #     },
-      #     "encoding" => {
-      #       "id" => ....
-      #     }
-      #   }
+      #   @repository.submodule_url_for('master', 'rack')
+      #   # => git@localhost:rack.git
       #
-      def submodules(ref)
-        commit = rev_parse_target(ref)
-        return {} unless commit
+      def submodule_url_for(ref, path)
+        if submodules(ref).any?
+          submodule = submodules(ref)[path]
 
-        begin
-          content = blob_content(commit, ".gitmodules")
-        rescue InvalidBlobName
-          return {}
+          if submodule
+            submodule['url']
+          end
         end
-
-        parser = GitmodulesParser.new(content)
-        fill_submodule_ids(commit, parser.parse)
       end
 
       # Return total commits count accessible from passed ref
@@ -976,6 +964,23 @@ module Gitlab
 
       private
 
+      # We are trying to deprecate this method because it does a lot of work
+      # but it seems to be used only to look up submodule URL's.
+      # https://gitlab.com/gitlab-org/gitaly/issues/329
+      def submodules(ref)
+        commit = rev_parse_target(ref)
+        return {} unless commit
+
+        begin
+          content = blob_content(commit, ".gitmodules")
+        rescue InvalidBlobName
+          return {}
+        end
+
+        parser = GitmodulesParser.new(content)
+        fill_submodule_ids(commit, parser.parse)
+      end
+
       def alternate_object_directories
         Gitlab::Git::Env.all.values_at(*ALLOWED_OBJECT_DIRECTORIES_VARIABLES).compact
       end

spec/lib/gitlab/git/repository_spec.rb

@@ -348,7 +348,7 @@ describe Gitlab::Git::Repository, seed_helper: true do
     let(:repository) { Gitlab::Git::Repository.new('default', TEST_REPO_PATH) }
 
     context 'where repo has submodules' do
-      let(:submodules) { repository.submodules('master') }
+      let(:submodules) { repository.send(:submodules, 'master') }
       let(:submodule) { submodules.first }
 
       it { expect(submodules).to be_kind_of Hash }
@@ -383,12 +383,12 @@ describe Gitlab::Git::Repository, seed_helper: true do
       end
 
       it 'should not have an entry for an uncommited submodule dir' do
-        submodules = repository.submodules('fix-existing-submodule-dir')
+        submodules = repository.send(:submodules, 'fix-existing-submodule-dir')
         expect(submodules).not_to have_key('submodule-existing-dir')
       end
 
       it 'should handle tags correctly' do
-        submodules = repository.submodules('v1.2.1')
+        submodules = repository.send(:submodules, 'v1.2.1')
 
         expect(submodules.first).to eq([
           "six", {
@@ -414,7 +414,7 @@ describe Gitlab::Git::Repository, seed_helper: true do
     end
 
     context 'where repo doesn\'t have submodules' do
-      let(:submodules) { repository.submodules('6d39438') }
+      let(:submodules) { repository.send(:submodules, '6d39438') }
       it 'should return an empty hash' do
         expect(submodules).to be_empty
       end