blob: 898a5ae15f2ec2d8661c867045fe440d7e6b7d91 (
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
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
|
module Gitlab
module Git
class DiffCollection
include Enumerable
DEFAULT_LIMITS = { max_files: 100, max_lines: 5000 }.freeze
def initialize(iterator, options = {})
@iterator = iterator
@max_files = options.fetch(:max_files, DEFAULT_LIMITS[:max_files])
@max_lines = options.fetch(:max_lines, DEFAULT_LIMITS[:max_lines])
@max_bytes = @max_files * 5120 # Average 5 KB per file
@safe_max_files = [@max_files, DEFAULT_LIMITS[:max_files]].min
@safe_max_lines = [@max_lines, DEFAULT_LIMITS[:max_lines]].min
@safe_max_bytes = @safe_max_files * 5120 # Average 5 KB per file
@all_diffs = !!options.fetch(:all_diffs, false)
@no_collapse = !!options.fetch(:no_collapse, true)
@line_count = 0
@byte_count = 0
@overflow = false
@empty = true
@array = Array.new
end
def each(&block)
Gitlab::GitalyClient.migrate(:commit_raw_diffs) do
each_patch(&block)
end
end
def empty?
any? # Make sure the iterator has been exercised
@empty
end
def overflow?
populate!
!!@overflow
end
def size
@size ||= count # forces a loop using each method
end
def real_size
populate!
if @overflow
"#{size}+"
else
size.to_s
end
end
def decorate!
collection = each_with_index do |element, i|
@array[i] = yield(element)
end
collection
end
alias_method :to_ary, :to_a
private
def populate!
return if @populated
each { nil } # force a loop through all diffs
nil
end
def over_safe_limits?(files)
files >= @safe_max_files || @line_count > @safe_max_lines || @byte_count >= @safe_max_bytes
end
def each_patch
i = 0
@array.each do |diff|
yield diff
i += 1
end
return if @overflow
return if @iterator.nil?
@iterator.each do |raw|
@empty = false
if !@all_diffs && i >= @max_files
@overflow = true
break
end
collapse = !@all_diffs && !@no_collapse
diff = Gitlab::Git::Diff.new(raw, collapse: collapse)
if collapse && over_safe_limits?(i)
diff.prune_collapsed_diff!
end
@line_count += diff.line_count
@byte_count += diff.diff.bytesize
if !@all_diffs && (@line_count >= @max_lines || @byte_count >= @max_bytes)
# This last Diff instance pushes us over the lines limit. We stop and
# discard it.
@overflow = true
break
end
yield @array[i] = diff
i += 1
end
@populated = true
# Allow iterator to be garbage-collected. It cannot be reused anyway.
@iterator = nil
end
end
end
end
|