gitlab-org--gitlab-foss/lib/gitlab/git/rugged_impl/tree.rb
John Cai 8765d53737 Wrap rugged calls with access disk block
Whenever we use the rugged implementation, we are going straight to disk
so we want to bypass the disk access check.
2019-07-16 13:54:01 -07:00

112 lines
3.7 KiB
Ruby

# frozen_string_literal: true
# NOTE: This code is legacy. Do not add/modify code here unless you have
# discussed with the Gitaly team. See
# https://docs.gitlab.com/ee/development/gitaly.html#legacy-rugged-code
# for more details.
module Gitlab
module Git
module RuggedImpl
module Tree
module ClassMethods
extend ::Gitlab::Utils::Override
include Gitlab::Git::RuggedImpl::UseRugged
override :tree_entries
def tree_entries(repository, sha, path, recursive)
if use_rugged?(repository, :rugged_tree_entries)
wrap_rugged_call { tree_entries_with_flat_path_from_rugged(repository, sha, path, recursive) }
else
super
end
end
def tree_entries_with_flat_path_from_rugged(repository, sha, path, recursive)
tree_entries_from_rugged(repository, sha, path, recursive).tap do |entries|
# This was an optimization to reduce N+1 queries for Gitaly
# (https://gitlab.com/gitlab-org/gitaly/issues/530). It
# used to be done lazily in the view via
# TreeHelper#flatten_tree, so it's possible there's a
# performance impact by loading this eagerly.
rugged_populate_flat_path(repository, sha, path, entries)
end
end
def tree_entries_from_rugged(repository, sha, path, recursive)
current_path_entries = get_tree_entries_from_rugged(repository, sha, path)
ordered_entries = []
current_path_entries.each do |entry|
ordered_entries << entry
if recursive && entry.dir?
ordered_entries.concat(tree_entries_from_rugged(repository, sha, entry.path, true))
end
end
ordered_entries
end
def rugged_populate_flat_path(repository, sha, path, entries)
entries.each do |entry|
entry.flat_path = entry.path
next unless entry.dir?
entry.flat_path =
if path
File.join(path, rugged_flatten_tree(repository, sha, entry, path))
else
rugged_flatten_tree(repository, sha, entry, path)
end
end
end
# Returns the relative path of the first subdir that doesn't have only one directory descendant
def rugged_flatten_tree(repository, sha, tree, root_path)
subtree = tree_entries_from_rugged(repository, sha, tree.path, false)
if subtree.count == 1 && subtree.first.dir?
File.join(tree.name, rugged_flatten_tree(repository, sha, subtree.first, root_path))
else
tree.name
end
end
def get_tree_entries_from_rugged(repository, sha, path)
commit = repository.lookup(sha)
root_tree = commit.tree
tree = if path
id = find_id_by_path(repository, root_tree.oid, path)
if id
repository.lookup(id)
else
[]
end
else
root_tree
end
tree.map do |entry|
current_path = path ? File.join(path, entry[:name]) : entry[:name]
new(
id: entry[:oid],
root_id: root_tree.oid,
name: entry[:name],
type: entry[:type],
mode: entry[:filemode].to_s(8),
path: current_path,
commit_id: sha
)
end
rescue Rugged::ReferenceError
[]
end
end
end
end
end
end