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# frozen_string_literal: true
module Gitlab
module BackgroundMigration
# Backfills the `routes.namespace_id` column, by copying source_id value
# (for groups and user namespaces source_id == namespace_id)
class BackfillNamespaceIdForNamespaceRoute
include Gitlab::Database::DynamicModelHelpers
def perform(start_id, end_id, batch_table, batch_column, sub_batch_size, pause_ms)
parent_batch_relation = relation_scoped_to_range(batch_table, batch_column, start_id, end_id)
parent_batch_relation.each_batch(column: batch_column, of: sub_batch_size) do |sub_batch|
batch_metrics.time_operation(:update_all) do
sub_batch.update_all('namespace_id=source_id')
end
pause_ms = [0, pause_ms].max
sleep(pause_ms * 0.001)
end
end
def batch_metrics
@batch_metrics ||= Gitlab::Database::BackgroundMigration::BatchMetrics.new
end
private
def relation_scoped_to_range(source_table, source_key_column, start_id, stop_id)
define_batchable_model(source_table, connection: ActiveRecord::Base.connection)
.joins('inner join namespaces on routes.source_id = namespaces.id')
.where(source_key_column => start_id..stop_id)
.where(namespace_id: nil)
.where(source_type: 'Namespace')
end
end
end
end
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