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
|
# frozen_string_literal: true
module Types
class BaseField < GraphQL::Schema::Field
prepend Gitlab::Graphql::Authorize
DEFAULT_COMPLEXITY = 1
def initialize(*args, **kwargs, &block)
@calls_gitaly = !!kwargs.delete(:calls_gitaly)
@constant_complexity = !!kwargs[:complexity]
kwargs[:complexity] ||= field_complexity(kwargs[:resolver_class])
@feature_flag = kwargs[:feature_flag]
kwargs = check_feature_flag(kwargs)
super(*args, **kwargs, &block)
end
def base_complexity
complexity = DEFAULT_COMPLEXITY
complexity += 1 if calls_gitaly?
complexity
end
def calls_gitaly?
@calls_gitaly
end
def constant_complexity?
@constant_complexity
end
def visible?(context)
return false if feature_flag.present? && !Feature.enabled?(feature_flag)
super
end
private
attr_reader :feature_flag
def feature_documentation_message(key, description)
"#{description}. Available only when feature flag #{key} is enabled."
end
def check_feature_flag(args)
args[:description] = feature_documentation_message(args[:feature_flag], args[:description]) if args[:feature_flag].present?
args.delete(:feature_flag)
args
end
def field_complexity(resolver_class)
if resolver_class
field_resolver_complexity
else
base_complexity
end
end
def field_resolver_complexity
# Complexity can be either integer or proc. If proc is used then it's
# called when computing a query complexity and context and query
# arguments are available for computing complexity. For resolvers we use
# proc because we set complexity depending on arguments and number of
# items which can be loaded.
proc do |ctx, args, child_complexity|
# Resolvers may add extra complexity depending on used arguments
complexity = child_complexity + self.resolver&.try(:resolver_complexity, args, child_complexity: child_complexity).to_i
complexity += 1 if calls_gitaly?
field_defn = to_graphql
if field_defn.connection?
# Resolvers may add extra complexity depending on number of items being loaded.
page_size = field_defn.connection_max_page_size || ctx.schema.default_max_page_size
limit_value = [args[:first], args[:last], page_size].compact.min
multiplier = self.resolver&.try(:complexity_multiplier, args).to_f
complexity += complexity * limit_value * multiplier
end
complexity.to_i
end
end
end
end
|