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# frozen_string_literal: true
module Resolvers
class BlobsResolver < BaseResolver
include Gitlab::Graphql::Authorize::AuthorizeResource
type Types::Tree::BlobType.connection_type, null: true
authorize :download_code
calls_gitaly!
alias_method :repository, :object
argument :paths, [GraphQL::Types::String],
required: true,
description: 'Array of desired blob paths.'
argument :ref, GraphQL::Types::String,
required: false,
default_value: nil,
description: 'Commit ref to get the blobs from. Default value is HEAD.'
# We fetch blobs from Gitaly efficiently but it still scales O(N) with the
# number of paths being fetched, so apply a scaling limit to that.
def self.resolver_complexity(args, child_complexity:)
super + (args[:paths] || []).size
end
def resolve(paths:, ref:)
authorize!(repository.container)
return [] if repository.empty?
ref ||= repository.root_ref
validate_ref(ref)
repository.blobs_at(paths.map { |path| [ref, path] })
end
private
def validate_ref(ref)
unless Gitlab::GitRefValidator.validate(ref)
raise Gitlab::Graphql::Errors::ArgumentError, 'Ref is not valid'
end
end
end
end
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