117 lines
4 KiB
Ruby
117 lines
4 KiB
Ruby
# frozen_string_literal: true
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module Gitlab
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module HashedStorage
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# Hashed Storage Migrator
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#
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# This is responsible for scheduling and flagging projects
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# to be migrated from Legacy to Hashed storage, either one by one or in bulk.
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class Migrator
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BATCH_SIZE = 100
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# Schedule a range of projects to be bulk migrated with #bulk_migrate asynchronously
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#
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# @param [Integer] start first project id for the range
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# @param [Integer] finish last project id for the range
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def bulk_schedule_migration(start:, finish:)
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::HashedStorage::MigratorWorker.perform_async(start, finish)
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end
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# Schedule a range of projects to be bulk rolledback with #bulk_rollback asynchronously
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#
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# @param [Integer] start first project id for the range
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# @param [Integer] finish last project id for the range
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def bulk_schedule_rollback(start:, finish:)
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::HashedStorage::RollbackerWorker.perform_async(start, finish)
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end
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# Start migration of projects from specified range
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#
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# Flagging a project to be migrated is a synchronous action
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# but the migration runs through async jobs
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#
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# @param [Integer] start first project id for the range
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# @param [Integer] finish last project id for the range
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# rubocop: disable CodeReuse/ActiveRecord
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def bulk_migrate(start:, finish:)
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projects = build_relation(start, finish)
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projects.with_route.find_each(batch_size: BATCH_SIZE) do |project|
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migrate(project)
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end
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end
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# rubocop: enable CodeReuse/ActiveRecord
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# Start rollback of projects from specified range
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#
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# Flagging a project to be rolled back is a synchronous action
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# but the rollback runs through async jobs
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#
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# @param [Integer] start first project id for the range
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# @param [Integer] finish last project id for the range
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# rubocop: disable CodeReuse/ActiveRecord
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def bulk_rollback(start:, finish:)
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projects = build_relation(start, finish)
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projects.with_route.find_each(batch_size: BATCH_SIZE) do |project|
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rollback(project)
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end
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end
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# rubocop: enable CodeReuse/ActiveRecord
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# Flag a project to be migrated to Hashed Storage
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#
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# @param [Project] project that will be migrated
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def migrate(project)
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Rails.logger.info "Starting storage migration of #{project.full_path} (ID=#{project.id})..."
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project.migrate_to_hashed_storage!
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rescue => err
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Rails.logger.error("#{err.message} migrating storage of #{project.full_path} (ID=#{project.id}), trace - #{err.backtrace}")
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end
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# Flag a project to be rolled-back to Legacy Storage
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#
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# @param [Project] project that will be rolled-back
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def rollback(project)
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Rails.logger.info "Starting storage rollback of #{project.full_path} (ID=#{project.id})..."
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project.rollback_to_legacy_storage!
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rescue => err
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Rails.logger.error("#{err.message} rolling-back storage of #{project.full_path} (ID=#{project.id}), trace - #{err.backtrace}")
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end
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# Returns whether we have any pending storage migration
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#
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def migration_pending?
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any_non_empty_queue?(::HashedStorage::MigratorWorker, ::HashedStorage::ProjectMigrateWorker)
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end
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# Returns whether we have any pending storage rollback
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#
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def rollback_pending?
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any_non_empty_queue?(::HashedStorage::RollbackerWorker, ::HashedStorage::ProjectRollbackWorker)
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end
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private
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def any_non_empty_queue?(*workers)
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workers.any? do |worker|
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!Sidekiq::Queue.new(worker.queue).size.zero?
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end
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end
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# rubocop: disable CodeReuse/ActiveRecord
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def build_relation(start, finish)
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relation = Project
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table = Project.arel_table
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relation = relation.where(table[:id].gteq(start)) if start
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relation = relation.where(table[:id].lteq(finish)) if finish
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relation
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end
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# rubocop: enable CodeReuse/ActiveRecord
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end
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end
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end
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