83 lines
2.1 KiB
Ruby
83 lines
2.1 KiB
Ruby
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# frozen_string_literal: true
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module Gitlab
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module Graphql
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module Loaders
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class IssuableLoader
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attr_reader :parent, :issuable_finder
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BatchKey = Struct.new(:parent, :finder_class, :current_user)
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def initialize(parent, issuable_finder)
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@parent = parent
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@issuable_finder = issuable_finder
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end
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def batching_find_all(&with_query)
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if issuable_finder.params.keys == ['iids']
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batch_load_issuables(issuable_finder.params[:iids], with_query)
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else
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post_process(find_all, with_query)
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end
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end
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def find_all
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issuable_finder.params[parent_param] = parent if parent
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issuable_finder.execute
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end
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private
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def parent_param
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case parent
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when Project
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:project_id
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when Group
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:group_id
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else
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raise "Unexpected parent: #{parent.class}"
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end
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end
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def post_process(query, with_query)
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if with_query
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with_query.call(query)
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else
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query
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end
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end
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def batch_load_issuables(iids, with_query)
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Array.wrap(iids).map { |iid| batch_load(iid, with_query) }
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end
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def batch_load(iid, with_query)
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return if parent.nil?
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BatchLoader::GraphQL
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.for([parent_param, iid.to_s])
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.batch(key: batch_key) do |params, loader, args|
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batch_key = args[:key]
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user = batch_key.current_user
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params.group_by(&:first).each do |key, group|
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iids = group.map(&:second).uniq
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args = { key => batch_key.parent, iids: iids }
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query = batch_key.finder_class.new(user, args).execute
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post_process(query, with_query).each do |item|
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loader.call([key, item.iid.to_s], item)
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end
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end
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end
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end
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def batch_key
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BatchKey.new(parent, issuable_finder.class, issuable_finder.current_user)
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end
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end
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end
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end
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end
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