晋太元中,武陵人捕鱼为业。缘溪行,忘路之远近。忽逢桃花林,夹岸数百步,中无杂树,芳草鲜美,落英缤纷。渔人甚异之,复前行,欲穷其林。 林尽水源,便得一山,山有小口,仿佛若有光。便舍船,从口入。初极狭,才通人。复行数十步,豁然开朗。土地平旷,屋舍俨然,有良田、美池、桑竹之属。阡陌交通,鸡犬相闻。其中往来种作,男女衣着,悉如外人。黄发垂髫,并怡然自乐。 见渔人,乃大惊,问所从来。具答之。便要还家,设酒杀鸡作食。村中闻有此人,咸来问讯。自云先世避秦时乱,率妻子邑人来此绝境,不复出焉,遂与外人间隔。问今是何世,乃不知有汉,无论魏晋。此人一一为具言所闻,皆叹惋。余人各复延至其家,皆出酒食。停数日,辞去。此中人语云:“不足为外人道也。”(间隔 一作:隔绝) 既出,得其船,便扶向路,处处志之。及郡下,诣太守,说如此。太守即遣人随其往,寻向所志,遂迷,不复得路。 南阳刘子骥,高尚士也,闻之,欣然规往。未果,寻病终。后遂无问津者。
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import peewee as pw
class BlockedPort(pw.Model):
"""
Port + protocol for blocking data
"""
port = pw.IntegerField(null=False)
proto = pw.CharField(
null=False, constraints=[pw.Check("proto in ('tcp', 'udp', 'all')")]
)
comment = pw.CharField(null=True)
class Meta:
db_table = "blocked_port"
indexes = (
# create an unique on port/proto
(("port", "proto"), True),
)
class IgnoredByPort(pw.Model):
"""
Ignored IPs for port + protocol
"""
port_proto = pw.ForeignKeyField(
BlockedPort, null=False, on_delete="CASCADE", related_name="ips"
)
ip = pw.CharField(null=False)
comment = pw.CharField(null=True)
class Meta:
db_table = "ignored_by_port_proto"
indexes = (
# create an unique on port/ip
(("port_proto", "ip"), True),
)
def migrate(migrator, database, fake=False, **kwargs):
migrator.create_model(BlockedPort)
migrator.create_model(IgnoredByPort)
IPList = migrator.orm["iplist"]
migrator.add_fields(IPList, full_access=pw.BooleanField(null=True))
def rollback(migrator, database, fake=False, **kwargs):
BlockedPort = migrator.orm["blocked_port"]
IgnoredByPort = migrator.orm["blocked_port_ip"]
IPList = migrator.orm["iplist"]
migrator.remove_model(BlockedPort)
migrator.remove_model(IgnoredByPort)
migrator.remove_fields(IPList, "full_access")