blob: e4390771db2c54cc12e320e4472db57f4a487f81 (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
|
# frozen_string_literal: true
#
module Gitlab
module Diff
class HighlightCache
delegate :diffable, to: :@diff_collection
delegate :diff_options, to: :@diff_collection
def initialize(diff_collection, backend: Rails.cache)
@backend = backend
@diff_collection = diff_collection
end
# - Reads from cache
# - Assigns DiffFile#highlighted_diff_lines for cached files
def decorate(diff_file)
if content = read_file(diff_file)
diff_file.highlighted_diff_lines = content.map do |line|
Gitlab::Diff::Line.init_from_hash(line)
end
end
end
# It populates a Hash in order to submit a single write to the memory
# cache. This avoids excessive IO generated by N+1's (1 writing for
# each highlighted line or file).
def write_if_empty
return if cached_content.present?
@diff_collection.diff_files.each do |diff_file|
next unless cacheable?(diff_file)
diff_file_id = diff_file.file_identifier
cached_content[diff_file_id] = diff_file.highlighted_diff_lines.map(&:to_hash)
end
cache.write(key, cached_content, expires_in: 1.week)
end
def clear
cache.delete(key)
end
def key
[diffable, 'highlighted-diff-files', Gitlab::Diff::Line::SERIALIZE_KEYS, diff_options]
end
private
def read_file(diff_file)
cached_content[diff_file.file_identifier]
end
def cache
@backend
end
def cached_content
@cached_content ||= cache.read(key) || {}
end
def cacheable?(diff_file)
diffable.present? && diff_file.text? && diff_file.diffable?
end
end
end
end
|
