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# frozen_string_literal: true
module Gitlab
module Graphql
module Limit
class FieldCallCount < ::GraphQL::Schema::FieldExtension
def resolve(object:, arguments:, context:)
raise Gitlab::Graphql::Errors::ArgumentError, 'Limit must be specified.' unless limit
raise Gitlab::Graphql::Errors::LimitError, error_message if increment_call_count(context) > limit
yield(object, arguments)
end
private
def increment_call_count(context)
query_id = fetch_query_id(context)
context[:call_count] ||= {}
context[:call_count][query_id] ||= {}
context[:call_count][query_id][field] ||= 0
context[:call_count][query_id][field] += 1
end
def fetch_query_id(context)
context.query.operation_fingerprint
rescue TypeError
''
end
def limit
options[:limit]
end
def error_message
"\"#{field.graphql_name}\" field can be requested only for #{limit} #{field.owner.graphql_name}(s) at a time."
end
end
end
end
end
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