Merge branch 'gitaly-write-ref-error-handling' into 'master'

Wrap Rugged-exceptions in Gitlab::Git::Repository#write_ref

See merge request gitlab-org/gitlab-ce!16570

app/models/repository.rb

@@ -259,15 +259,7 @@ class Repository
     return if kept_around?(sha)
 
     # This will still fail if the file is corrupted (e.g. 0 bytes)
-    begin
     raw_repository.write_ref(keep_around_ref_name(sha), sha, shell: false)
-    rescue Rugged::ReferenceError => ex
-      Rails.logger.error "Unable to create #{REF_KEEP_AROUND} reference for repository #{path}: #{ex}"
-    rescue Rugged::OSError => ex
-      raise unless ex.message =~ /Failed to create locked file/ && ex.message =~ /File exists/
-
-      Rails.logger.error "Unable to create #{REF_KEEP_AROUND} reference for repository #{path}: #{ex}"
-    end
   end
 
   def kept_around?(sha)

lib/gitlab/git/repository.rb

@@ -1091,19 +1091,6 @@ module Gitlab
         end
       end
 
-      def shell_write_ref(ref_path, ref, old_ref)
-        raise ArgumentError, "invalid ref_path #{ref_path.inspect}" if ref_path.include?(' ')
-        raise ArgumentError, "invalid ref #{ref.inspect}" if ref.include?("\x00")
-        raise ArgumentError, "invalid old_ref #{old_ref.inspect}" if !old_ref.nil? && old_ref.include?("\x00")
-
-        input = "update #{ref_path}\x00#{ref}\x00#{old_ref}\x00"
-        run_git!(%w[update-ref --stdin -z]) { |stdin| stdin.write(input) }
-      end
-
-      def rugged_write_ref(ref_path, ref)
-        rugged.references.create(ref_path, ref, force: true)
-      end
-
       def fetch_ref(source_repository, source_ref:, target_ref:)
         Gitlab::Git.check_namespace!(source_repository)
         source_repository = RemoteRepository.new(source_repository) unless source_repository.is_a?(RemoteRepository)
@@ -1365,6 +1352,25 @@ module Gitlab
 
       private
 
+      def shell_write_ref(ref_path, ref, old_ref)
+        raise ArgumentError, "invalid ref_path #{ref_path.inspect}" if ref_path.include?(' ')
+        raise ArgumentError, "invalid ref #{ref.inspect}" if ref.include?("\x00")
+        raise ArgumentError, "invalid old_ref #{old_ref.inspect}" if !old_ref.nil? && old_ref.include?("\x00")
+
+        input = "update #{ref_path}\x00#{ref}\x00#{old_ref}\x00"
+        run_git!(%w[update-ref --stdin -z]) { |stdin| stdin.write(input) }
+      end
+
+      def rugged_write_ref(ref_path, ref)
+        rugged.references.create(ref_path, ref, force: true)
+      rescue Rugged::ReferenceError => ex
+        Rails.logger.error "Unable to create #{ref_path} reference for repository #{path}: #{ex}"
+      rescue Rugged::OSError => ex
+        raise unless ex.message =~ /Failed to create locked file/ && ex.message =~ /File exists/
+
+        Rails.logger.error "Unable to create #{ref_path} reference for repository #{path}: #{ex}"
+      end
+
       def fresh_worktree?(path)
         File.exist?(path) && !clean_stuck_worktree(path)
       end