debian-mirror-gitlab/lib/gitlab/database/dynamic_model_helpers.rb

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# frozen_string_literal: true
module Gitlab
module Database
module DynamicModelHelpers
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BATCH_SIZE = 1_000
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def define_batchable_model(table_name, connection:)
klass = Class.new(ActiveRecord::Base) do
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include EachBatch
self.table_name = table_name
self.inheritance_column = :_type_disabled
end
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klass.connection = connection
klass
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end
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def each_batch(table_name, connection:, scope: ->(table) { table.all }, of: BATCH_SIZE)
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if transaction_open?
raise <<~MSG.squish
each_batch should not run inside a transaction, you can disable
transactions by calling disable_ddl_transaction! in the body of
your migration class
MSG
end
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scope.call(define_batchable_model(table_name, connection: connection))
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.each_batch(of: of) { |batch| yield batch }
end
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def each_batch_range(table_name, connection:, scope: ->(table) { table.all }, of: BATCH_SIZE)
each_batch(table_name, connection: connection, scope: scope, of: of) do |batch|
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yield batch.pluck('MIN(id), MAX(id)').first
end
end
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end
end
end