88 lines
2.2 KiB
Ruby
88 lines
2.2 KiB
Ruby
class MigrateUserActivitiesToUsersLastActivityOn < ActiveRecord::Migration
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include Gitlab::Database::MigrationHelpers
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disable_ddl_transaction!
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DOWNTIME = false
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USER_ACTIVITY_SET_KEY = 'user/activities'.freeze
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ACTIVITIES_PER_PAGE = 100
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TIME_WHEN_ACTIVITY_SET_WAS_INTRODUCED = Time.utc(2016, 12, 1)
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def up
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return if activities_count(TIME_WHEN_ACTIVITY_SET_WAS_INTRODUCED, Time.now).zero?
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day = Time.at(activities(TIME_WHEN_ACTIVITY_SET_WAS_INTRODUCED, Time.now).first.second)
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transaction do
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while day <= Time.now.utc.tomorrow
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persist_last_activity_on(day: day)
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day = day.tomorrow
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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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# This ensures we don't lock all users for the duration of the migration.
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update_column_in_batches(:users, :last_activity_on, nil) do |table, query|
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query.where(table[:last_activity_on].not_eq(nil))
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end
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end
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private
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def persist_last_activity_on(day:, page: 1)
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activities_count = activities_count(day.at_beginning_of_day, day.at_end_of_day)
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return if activities_count.zero?
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activities = activities(day.at_beginning_of_day, day.at_end_of_day, page: page)
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update_sql =
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Arel::UpdateManager.new(ActiveRecord::Base).
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table(users_table).
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set(users_table[:last_activity_on] => day.to_date).
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where(users_table[:username].in(activities.map(&:first))).
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to_sql
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connection.exec_update(update_sql, self.class.name, [])
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unless last_page?(page, activities_count)
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persist_last_activity_on(day: day, page: page + 1)
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end
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end
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def users_table
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@users_table ||= Arel::Table.new(:users)
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end
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def activities(from, to, page: 1)
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Gitlab::Redis.with do |redis|
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redis.zrangebyscore(USER_ACTIVITY_SET_KEY, from.to_i, to.to_i,
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with_scores: true,
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limit: limit(page))
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end
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end
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def activities_count(from, to)
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Gitlab::Redis.with do |redis|
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redis.zcount(USER_ACTIVITY_SET_KEY, from.to_i, to.to_i)
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end
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end
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def limit(page)
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[offset(page), ACTIVITIES_PER_PAGE]
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end
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def total_pages(count)
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(count.to_f / ACTIVITIES_PER_PAGE).ceil
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end
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def last_page?(page, count)
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page >= total_pages(count)
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end
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def offset(page)
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(page - 1) * ACTIVITIES_PER_PAGE
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end
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end
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