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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Current File : //usr/lib/python3.6/site-packages/cloudinit/config/cc_scripts_vendor.py
# Copyright (C) 2014 Canonical Ltd.
#
# Author: Ben Howard <ben.howard@canonical.com>
#
# This file is part of cloud-init. See LICENSE file for license information.
"""Scripts Vendor: Run vendor scripts"""

import logging
import os
from textwrap import dedent

from cloudinit import subp, util
from cloudinit.cloud import Cloud
from cloudinit.config import Config
from cloudinit.config.schema import MetaSchema, get_meta_doc
from cloudinit.distros import ALL_DISTROS
from cloudinit.settings import PER_INSTANCE

MODULE_DESCRIPTION = """\
On select Datasources, vendors have a channel for the consumption
of all supported user data types via a special channel called
vendor data. Any scripts in the ``scripts/vendor`` directory in the datasource
will be run when a new instance is first booted. Scripts will be run in
alphabetical order. This module allows control over the execution of
vendor data.
"""

meta: MetaSchema = {
    "id": "cc_scripts_vendor",
    "name": "Scripts Vendor",
    "title": "Run vendor scripts",
    "description": MODULE_DESCRIPTION,
    "distros": [ALL_DISTROS],
    "frequency": PER_INSTANCE,
    "examples": [
        dedent(
            """\
            vendor_data:
              enabled: true
              prefix: /usr/bin/ltrace
            """
        ),
        dedent(
            """\
            vendor_data:
              enabled: true
              prefix: [timeout, 30]
            """
        ),
        dedent(
            """\
            # Vendor data will not be processed
            vendor_data:
              enabled: false
            """
        ),
    ],
    "activate_by_schema_keys": [],
}

__doc__ = get_meta_doc(meta)
LOG = logging.getLogger(__name__)


SCRIPT_SUBDIR = "vendor"


def handle(name: str, cfg: Config, cloud: Cloud, args: list) -> None:
    # This is written to by the vendor data handlers
    # any vendor data shell scripts get placed in runparts_path
    runparts_path = os.path.join(
        cloud.get_ipath_cur(), "scripts", SCRIPT_SUBDIR
    )

    prefix = util.get_cfg_by_path(cfg, ("vendor_data", "prefix"), [])

    try:
        subp.runparts(runparts_path, exe_prefix=prefix)
    except Exception:
        LOG.warning(
            "Failed to run module %s (%s in %s)",
            name,
            SCRIPT_SUBDIR,
            runparts_path,
        )
        raise

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