39 lines
948 B
Ruby
39 lines
948 B
Ruby
# frozen_string_literal: true
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class MigrateEpicMentionsToDb < ActiveRecord::Migration[5.2]
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include Gitlab::Database::MigrationHelpers
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DOWNTIME = false
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disable_ddl_transaction!
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DELAY = 2.minutes.to_i
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BATCH_SIZE = 10000
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MIGRATION = 'UserMentions::CreateResourceUserMention'
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JOIN = "LEFT JOIN epic_user_mentions on epics.id = epic_user_mentions.epic_id"
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QUERY_CONDITIONS = "(description like '%@%' OR title like '%@%') AND epic_user_mentions.epic_id is null"
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class Epic < ActiveRecord::Base
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include EachBatch
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self.table_name = 'epics'
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end
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def up
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return unless Gitlab.ee?
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Epic
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.joins(JOIN)
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.where(QUERY_CONDITIONS)
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.each_batch(of: BATCH_SIZE) do |batch, index|
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range = batch.pluck(Arel.sql('MIN(epics.id)'), Arel.sql('MAX(epics.id)')).first
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migrate_in(index * DELAY, MIGRATION, ['Epic', JOIN, QUERY_CONDITIONS, false, *range])
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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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