blob: a374851e8356e3300cfef8e88576f2ac16a88942 (
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
|
# frozen_string_literal: true
module Types
class BaseField < GraphQL::Schema::Field
prepend Gitlab::Graphql::Authorize
DEFAULT_COMPLEXITY = 1
def initialize(*args, **kwargs, &block)
kwargs[:complexity] ||= field_complexity(kwargs[:resolver_class])
super(*args, **kwargs, &block)
end
private
def field_complexity(resolver_class)
if resolver_class
field_resolver_complexity
else
DEFAULT_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|
page_size = @max_page_size || ctx.schema.default_max_page_size
limit_value = [args[:first], args[:last], page_size].compact.min
# Resolvers may add extra complexity depending on used arguments
complexity = child_complexity + self.resolver&.try(:resolver_complexity, args, child_complexity: child_complexity).to_i
# Resolvers may add extra complexity depending on number of items being loaded.
multiplier = self.resolver&.try(:complexity_multiplier, args).to_f
complexity += complexity * limit_value * multiplier
complexity.to_i
end
end
end
end
|