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# frozen_string_literal: true
module Gitlab
module BackgroundMigration
# Background migration to move any legacy project to Hashed Storage
class MigrateToHashedStorage
def perform
batch_size = helper.batch_size
legacy_projects_count = Project.with_unmigrated_storage.count
if storage_migrator.rollback_pending?
logger.warn(
migrator: 'MigrateToHashedStorage',
message: 'Aborting an storage rollback operation currently in progress'
)
storage_migrator.abort_rollback!
end
if legacy_projects_count == 0
logger.info(
migrator: 'MigrateToHashedStorage',
message: 'There are no projects requiring migration to Hashed Storage'
)
return
end
logger.info(
migrator: 'MigrateToHashedStorage',
message: "Enqueuing migration of #{legacy_projects_count} projects in batches of #{batch_size}"
)
helper.project_id_batches_migration do |start, finish|
storage_migrator.bulk_schedule_migration(start: start, finish: finish)
logger.info(
migrator: 'MigrateToHashedStorage',
message: "Enqueuing migration of projects in batches of #{batch_size} from ID=#{start} to ID=#{finish}",
batch_from: start,
batch_to: finish
)
end
end
private
def helper
Gitlab::HashedStorage::RakeHelper
end
def storage_migrator
@storage_migrator ||= Gitlab::HashedStorage::Migrator.new
end
def logger
@logger ||= ::Gitlab::BackgroundMigration::Logger.build
end
end
end
end
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