def migrate(migrator, database, fake=False, **kwargs):
    if fake:
        return

    MalwareScan = migrator.orm["malware_scans"]
    MalwareHit = migrator.orm["malware_hits"]

    for scan in MalwareScan:
        total_malicious = (
            scan.malwarehit_set.select().where(MalwareHit.malicious).count()
        )
        scan.total_malicious = total_malicious
        scan.save()


def rollback(migrator, database, fake=False, **kwargs):
    pass