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# frozen_string_literal: true
module Packages
# TODO rename to BuildInfosFinder when cleaning up packages_graphql_pipelines_resolver
# https://gitlab.com/gitlab-org/gitlab/-/issues/358432
class BuildInfosForManyPackagesFinder
include ActiveRecord::ConnectionAdapters::Quoting
MAX_PAGE_SIZE = 100
def initialize(package_ids, params)
@package_ids = package_ids
@params = params
end
def execute
return Packages::BuildInfo.none if @package_ids.blank?
# This is a highly custom query that
# will not be re-used elsewhere
# rubocop: disable CodeReuse/ActiveRecord
query = Packages::Package.id_in(@package_ids)
.select('build_infos.*')
.from([Packages::Package.arel_table, lateral_query.arel.lateral.as('build_infos')])
.order('build_infos.id DESC')
# We manually select build_infos fields from the lateral query.
# Thus, we need to instruct ActiveRecord that returned rows are
# actually Packages::BuildInfo objects
Packages::BuildInfo.find_by_sql(query.to_sql)
# rubocop: enable CodeReuse/ActiveRecord
end
private
def lateral_query
order_direction = last ? :asc : :desc
# This is a highly custom query that
# will not be re-used elsewhere
# rubocop: disable CodeReuse/ActiveRecord
where_condition = Packages::BuildInfo.arel_table[:package_id]
.eq(Arel.sql("#{Packages::Package.table_name}.id"))
build_infos = ::Packages::BuildInfo.without_empty_pipelines
.where(where_condition)
.order(id: order_direction)
.limit(max_rows_per_package_id)
# rubocop: enable CodeReuse/ActiveRecord
apply_cursor(build_infos)
end
def max_rows_per_package_id
limit = [first, last, max_page_size, MAX_PAGE_SIZE].compact.min
limit += 1 if support_next_page
limit
end
def apply_cursor(build_infos)
if before
build_infos.with_pipeline_id_greater_than(before)
elsif after
build_infos.with_pipeline_id_less_than(after)
else
build_infos
end
end
def first
@params[:first]
end
def last
@params[:last]
end
def max_page_size
@params[:max_page_size]
end
def before
@params[:before]
end
def after
@params[:after]
end
def support_next_page
@params[:support_next_page]
end
end
end
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