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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# Copyright (C) 2020 Red Hat, Inc., Jake Hunsaker <jhunsake@redhat.com>

# This file is part of the sos project: https://github.com/sosreport/sos
#
# This copyrighted material is made available to anyone wishing to use,
# modify, copy, or redistribute it subject to the terms and conditions of
# version 2 of the GNU General Public License.
#
# See the LICENSE file in the source distribution for further information.

from sos.policies.init_systems import InitSystem
from sos.utilities import shell_out


class SystemdInit(InitSystem):
    """InitSystem abstraction for SystemD systems"""

    def __init__(self, chroot=None):
        super().__init__(
            init_cmd='systemctl',
            list_cmd='list-unit-files --type=service',
            query_cmd='status',
            chroot=chroot
        )
        self.load_all_services()

    def parse_query(self, output):
        for line in output.splitlines():
            if line.strip().startswith('Active:'):
                return line.split()[1]
        return 'unknown'

    def load_all_services(self):
        svcs = shell_out(self.list_cmd, chroot=self.chroot).splitlines()[1:]
        for line in svcs:
            try:
                name = line.split('.service')[0]
                config = line.split()[1]
                self.services[name] = {
                    'name': name,
                    'config': config
                }
            except IndexError:
                # not a valid line to extract status info from
                pass

    def is_running(self, name, default=False):
        try:
            svc = self.get_service_status(name)
            return svc['status'] == 'active'
        except Exception:
            return default

# vim: set et ts=4 sw=4 :

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