50 lines
1.5 KiB
Ruby
50 lines
1.5 KiB
Ruby
# frozen_string_literal: true
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class EnsureTargetProjectIdIsFilled < ActiveRecord::Migration[6.0]
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include Gitlab::Database::MigrationHelpers
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BACKGROUND_MIGRATION_CLASS = 'CopyMergeRequestTargetProjectToMergeRequestMetrics'
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BATCH_SIZE = 1_000
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DOWNTIME = false
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disable_ddl_transaction!
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class MergeRequest < ActiveRecord::Base
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self.table_name = 'merge_requests'
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end
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class MergeRequestMetrics < ActiveRecord::Base
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include EachBatch
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belongs_to :merge_request
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self.table_name = 'merge_request_metrics'
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end
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def up
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Gitlab::BackgroundMigration.steal(BACKGROUND_MIGRATION_CLASS)
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# Do a manual update in case we lost BG jobs. The expected record count should be 0 or very low.
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MergeRequestMetrics.where(target_project_id: nil).each_batch do |scope|
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query_for_cte = scope.joins(:merge_request).select(
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MergeRequestMetrics.arel_table[:id].as('id'),
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MergeRequest.arel_table[:target_project_id].as('target_project_id')
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)
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MergeRequestMetrics.connection.execute <<-SQL
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WITH target_project_id_and_metrics_id as (
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#{query_for_cte.to_sql}
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)
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UPDATE #{MergeRequestMetrics.connection.quote_table_name(MergeRequestMetrics.table_name)}
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SET target_project_id = target_project_id_and_metrics_id.target_project_id
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FROM target_project_id_and_metrics_id
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WHERE merge_request_metrics.id = target_project_id_and_metrics_id.id
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SQL
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end
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end
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def down
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# no-op
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end
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end
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