38 lines
1.2 KiB
Ruby
38 lines
1.2 KiB
Ruby
# frozen_string_literal: true
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module Gitlab
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module BackgroundMigration
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# Backfills the `namespaces.type` column, replacing any
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# instances of `NULL` with `User`
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class BackfillUserNamespace
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include Gitlab::Database::DynamicModelHelpers
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def perform(start_id, end_id, batch_table, batch_column, sub_batch_size, pause_ms)
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parent_batch_relation = relation_scoped_to_range(batch_table, batch_column, start_id, end_id)
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parent_batch_relation.each_batch(column: batch_column, of: sub_batch_size, order_hint: :type) do |sub_batch|
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batch_metrics.time_operation(:update_all) do
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sub_batch.update_all(type: 'User')
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end
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pause_ms = 0 if pause_ms < 0
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sleep(pause_ms * 0.001)
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end
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end
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def batch_metrics
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@batch_metrics ||= Gitlab::Database::BackgroundMigration::BatchMetrics.new
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end
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private
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def connection
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ActiveRecord::Base.connection
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end
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def relation_scoped_to_range(source_table, source_key_column, start_id, stop_id)
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define_batchable_model(source_table, connection: connection)
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.where(source_key_column => start_id..stop_id)
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.where(type: nil)
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end
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end
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end
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end
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