57 lines
1.9 KiB
Ruby
57 lines
1.9 KiB
Ruby
# See http://doc.gitlab.com/ce/development/migration_style_guide.html
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# for more information on how to write migrations for GitLab.
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class MigrateRemainingIssuesClosedAt < ActiveRecord::Migration[4.2]
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include Gitlab::Database::MigrationHelpers
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# Set this constant to true if this migration requires downtime.
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DOWNTIME = false
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disable_ddl_transaction!
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class Issue < ActiveRecord::Base
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self.table_name = 'issues'
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include EachBatch
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end
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def up
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Gitlab::BackgroundMigration.steal('CopyColumn')
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Gitlab::BackgroundMigration.steal('CleanupConcurrentTypeChange')
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if migrate_column_type?
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if closed_at_for_type_change_exists?
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migrate_remaining_rows
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else
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# Due to some EE merge problems some environments may not have the
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# "closed_at_for_type_change" column. If this is the case we have no
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# other option than to migrate the data _right now_.
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# rubocop:disable Migration/UpdateLargeTable
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change_column_type_concurrently(:issues, :closed_at, :datetime_with_timezone)
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cleanup_concurrent_column_type_change(:issues, :closed_at)
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end
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end
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end
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def down
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# Previous migrations already revert the changes made here.
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end
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def migrate_remaining_rows
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Issue.where('closed_at_for_type_change IS NULL AND closed_at IS NOT NULL').each_batch do |batch|
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batch.update_all('closed_at_for_type_change = closed_at')
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end
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cleanup_concurrent_column_type_change(:issues, :closed_at)
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end
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def migrate_column_type?
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# Some environments may have already executed the previous version of this
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# migration, thus we don't need to migrate those environments again.
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column_for('issues', 'closed_at').type == :datetime # rubocop:disable Migration/Datetime
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end
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def closed_at_for_type_change_exists?
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columns('issues').any? { |col| col.name == 'closed_at_for_type_change' }
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end
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end
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