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Viewing / Editing File: 075_ips_as_int.py

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import logging

import peewee as pw
import ipaddress


logger = logging.getLogger(__name__)


def migrate(migrator, database, fake=False, **kwargs):
    """Write your migrations here."""
    IPListNew = migrator.orm["iplist_new"]
    IPList = migrator.orm["iplist"]

    def iplist_select():
        # FIXME: remove this function after migrating to peewee 3
        try:
            yield from IPList.select(IPList).dicts().iterator()
        except RuntimeError:
            return

    try:
        from im360.utils.net import pack_ip_network
    except ImportError:
        pass
    else:
        with database.atomic():
            for ip_obj in iplist_select():
                try:
                    ip = ipaddress.ip_network(ip_obj["ip"])
                except ValueError:
                    # malformed ip
                    continue

                net, mask, version = pack_ip_network(ip)

                ip_obj.update(
                    {
                        "network_address": net,
                        "netmask": mask,
                        "version": version,
                    }
                )
                try:
                    IPListNew.insert(ip_obj).execute()
                except pw.IntegrityError as e:
                    logger.warning("Error inserting IP: %s", e)

    migrator.sql("DROP TABLE iplist")
    migrator.sql("ALTER TABLE iplist_new RENAME TO iplist")
    migrator.sql('CREATE INDEX "iplist_listname" ON "iplist" ("listname")')
    migrator.sql('CREATE INDEX "iplist_expiration" ON "iplist" ("expiration")')
    migrator.sql('CREATE INDEX "iplist_ip" ON "iplist" ("ip")')


def rollback(migrator, database, fake=False, **kwargs):
    """Write your rollback migrations here."""
    pass
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