38 lines
1.1 KiB
Ruby
38 lines
1.1 KiB
Ruby
# frozen_string_literal: true
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class MigrateAllMergeRequestUserMentionsToDb < ActiveRecord::Migration[6.0]
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include Gitlab::Database::MigrationHelpers
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DOWNTIME = false
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DELAY = 2.minutes.to_i
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BATCH_SIZE = 100_000
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MIGRATION = 'UserMentions::CreateResourceUserMention'
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JOIN = "LEFT JOIN merge_request_user_mentions on merge_requests.id = merge_request_user_mentions.merge_request_id"
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QUERY_CONDITIONS = "(description LIKE '%@%' OR title LIKE '%@%') AND merge_request_user_mentions.merge_request_id IS NULL"
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disable_ddl_transaction!
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class MergeRequest < ActiveRecord::Base
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include EachBatch
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end
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def up
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delay = DELAY
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MergeRequest.each_batch(of: BATCH_SIZE) do |batch, _|
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range = batch.pluck('MIN(merge_requests.id)', 'MAX(merge_requests.id)').first
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records_count = MergeRequest.joins(JOIN).where(QUERY_CONDITIONS).where(id: range.first..range.last).count
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if records_count > 0
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migrate_in(delay, MIGRATION, ['MergeRequest', JOIN, QUERY_CONDITIONS, false, *range])
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delay += [DELAY, (records_count / 500 + 1).minutes.to_i].max
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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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# no-op
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end
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end
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