gitlab-org--gitlab-foss/app/graphql/resolvers/full_path_resolver.rb
Douwe Maan 5f0e4040ce
Batch load only data from same repository when lazy object is accessed
By specifying `key`, we get a different lazy batch loader for each
repository, which means that accessing a lazy object from one repository
will only result in that repository's objects being fetched, not those
of other repositories, saving us some unnecessary Gitaly lookups.
2018-11-26 11:15:18 +01:00

22 lines
667 B
Ruby

# frozen_string_literal: true
module Resolvers
module FullPathResolver
extend ActiveSupport::Concern
prepended do
argument :full_path, GraphQL::ID_TYPE,
required: true,
description: 'The full path of the project or namespace, e.g., "gitlab-org/gitlab-ce"'
end
def model_by_full_path(model, full_path)
BatchLoader.for(full_path).batch(key: model) do |full_paths, loader, args|
# `with_route` avoids an N+1 calculating full_path
args[:key].where_full_path_in(full_paths).with_route.each do |project|
loader.call(project.full_path, project)
end
end
end
end
end