34 lines
981 B
Ruby
34 lines
981 B
Ruby
# frozen_string_literal: true
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module Gitlab
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module BackgroundMigration
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# Sets the MergeRequestDiff#files_count value for old rows
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class SetMergeRequestDiffFilesCount
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# Some historic data has a *lot* of files. Apply a sentinel to these cases
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FILES_COUNT_SENTINEL = 2**15 - 1
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def self.count_subquery
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<<~SQL
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files_count = (
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SELECT LEAST(#{FILES_COUNT_SENTINEL}, count(*))
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FROM merge_request_diff_files
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WHERE merge_request_diff_files.merge_request_diff_id = merge_request_diffs.id
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)
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SQL
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end
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class MergeRequestDiff < ActiveRecord::Base # rubocop:disable Style/Documentation
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include EachBatch
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self.table_name = 'merge_request_diffs'
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end
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def perform(start_id, end_id)
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MergeRequestDiff.where(id: start_id..end_id).each_batch do |relation|
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relation.update_all(self.class.count_subquery)
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end
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end
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end
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end
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end
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