114 lines
3.7 KiB
Ruby
114 lines
3.7 KiB
Ruby
# 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], kwargs[:complexity])
|
|
@feature_flag = kwargs[:feature_flag]
|
|
kwargs = check_feature_flag(kwargs)
|
|
kwargs = handle_deprecated(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 handle_deprecated(kwargs)
|
|
if kwargs[:deprecation_reason].present?
|
|
raise ArgumentError, 'Use `deprecated` property instead of `deprecation_reason`. ' \
|
|
'See https://docs.gitlab.com/ee/development/api_graphql_styleguide.html#deprecating-fields'
|
|
end
|
|
|
|
deprecation = kwargs.delete(:deprecated)
|
|
return kwargs unless deprecation
|
|
|
|
milestone, reason = deprecation.values_at(:milestone, :reason).map(&:presence)
|
|
|
|
raise ArgumentError, 'Please provide a `milestone` within `deprecated`' unless milestone
|
|
raise ArgumentError, 'Please provide a `reason` within `deprecated`' unless reason
|
|
raise ArgumentError, '`milestone` must be a `String`' unless milestone.is_a?(String)
|
|
|
|
deprecated_in = "Deprecated in #{milestone}"
|
|
kwargs[:deprecation_reason] = "#{reason}. #{deprecated_in}"
|
|
kwargs[:description] += ". #{deprecated_in}: #{reason}" if kwargs[:description]
|
|
|
|
kwargs
|
|
end
|
|
|
|
def field_complexity(resolver_class, current)
|
|
return current if current.present? && current > 0
|
|
|
|
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?
|
|
complexity += complexity * connection_complexity_multiplier(ctx, args)
|
|
|
|
complexity.to_i
|
|
end
|
|
end
|
|
|
|
def connection_complexity_multiplier(ctx, args)
|
|
# Resolvers may add extra complexity depending on number of items being loaded.
|
|
field_defn = to_graphql
|
|
return 0 unless field_defn.connection?
|
|
|
|
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
|
|
limit_value * multiplier
|
|
end
|
|
end
|
|
end
|