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# frozen_string_literal: true
module Namespaces
class Descendants < ApplicationRecord
self.table_name = :namespace_descendants
belongs_to :namespace
validates :namespace_id, uniqueness: true
def self.expire_for(namespace_ids)
# Union:
# - Look up all parent ids including the given ids via traversal_ids
# - Include the given ids to handle the case when the namespaces records are already deleted
sql = <<~SQL
WITH namespace_ids AS MATERIALIZED (
(
SELECT ids.id
FROM namespaces, UNNEST(traversal_ids) ids(id)
WHERE namespaces.id IN (?)
) UNION
(SELECT UNNEST(ARRAY[?]) AS id)
)
UPDATE namespace_descendants SET outdated_at = ? FROM namespace_ids WHERE namespace_descendants.namespace_id = namespace_ids.id
SQL
connection.execute(sanitize_sql_array([sql, namespace_ids, namespace_ids, Time.current]))
end
def self.load_outdated_batch(batch_size)
where
.not(outdated_at: nil)
.limit(batch_size)
.lock('FOR UPDATE SKIP LOCKED')
.pluck_primary_key
end
def self.upsert_with_consistent_data(namespace:, self_and_descendant_group_ids:, all_project_ids:)
query = <<~SQL
INSERT INTO namespace_descendants
(namespace_id, traversal_ids, self_and_descendant_group_ids, all_project_ids, outdated_at, calculated_at)
VALUES
(
?,
ARRAY[?]::bigint[],
ARRAY_REMOVE(ARRAY[?]::bigint[], NULL),
ARRAY_REMOVE(ARRAY[?]::bigint[], NULL),
NULL,
?
)
ON CONFLICT(namespace_id)
DO UPDATE SET
traversal_ids = EXCLUDED.traversal_ids,
self_and_descendant_group_ids = EXCLUDED.self_and_descendant_group_ids,
all_project_ids = EXCLUDED.all_project_ids,
outdated_at = EXCLUDED.outdated_at,
calculated_at = EXCLUDED.calculated_at
SQL
connection.execute(sanitize_sql_array([
query,
namespace.id,
namespace.traversal_ids,
self_and_descendant_group_ids,
all_project_ids,
Time.current
]))
end
end
end
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