0fc9f9d3e7
DB schema generated by a migration may look different in rails 4 and 5 (because rails 5 may use different default values). For this reason it's important to explicitly set for which rails version a migration was written for. See https://stackoverflow.com/questions/35929869/activerecordmigration-deprecation-warning-asks-for-rails-version-but-im-no/35930912#35930912
65 lines
1.5 KiB
Ruby
65 lines
1.5 KiB
Ruby
# frozen_string_literal: true
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class EnqueueRedactLinks < ActiveRecord::Migration[4.2]
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include Gitlab::Database::MigrationHelpers
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DOWNTIME = false
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BATCH_SIZE = 1000
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DELAY_INTERVAL = 5.minutes.to_i
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MIGRATION = 'RedactLinks'
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disable_ddl_transaction!
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class Note < ActiveRecord::Base
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include EachBatch
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self.table_name = 'notes'
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self.inheritance_column = :_type_disabled
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end
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class Issue < ActiveRecord::Base
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include EachBatch
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self.table_name = 'issues'
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self.inheritance_column = :_type_disabled
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end
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class MergeRequest < ActiveRecord::Base
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include EachBatch
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self.table_name = 'merge_requests'
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self.inheritance_column = :_type_disabled
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end
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class Snippet < ActiveRecord::Base
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include EachBatch
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self.table_name = 'snippets'
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self.inheritance_column = :_type_disabled
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end
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def up
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disable_statement_timeout do
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schedule_migration(Note, 'note')
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schedule_migration(Issue, 'description')
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schedule_migration(MergeRequest, 'description')
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schedule_migration(Snippet, 'description')
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end
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end
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def down
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# nothing to do
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end
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private
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def schedule_migration(model, field)
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link_pattern = "%/sent_notifications/" + ("_" * 32) + "/unsubscribe%"
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model.where("#{field} like ?", link_pattern).each_batch(of: BATCH_SIZE) do |batch, index|
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start_id, stop_id = batch.pluck('MIN(id)', 'MAX(id)').first
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BackgroundMigrationWorker.perform_in(index * DELAY_INTERVAL, MIGRATION, [model.name.demodulize, field, start_id, stop_id])
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end
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end
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end
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