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# Copyright (C) 2011 Canonical Ltd.
# Copyright (C) 2012 Hewlett-Packard Development Company, L.P.
#
# Author: Scott Moser <scott.moser@canonical.com>
# Author: Juerg Haefliger <juerg.haefliger@hp.com>
#
# This file is part of cloud-init. See LICENSE file for license information.
"""install and configure landscape client"""
import os
from io import BytesIO
from textwrap import dedent
from configobj import ConfigObj
from cloudinit import subp, type_utils, util
from cloudinit.config.schema import MetaSchema, get_meta_doc
from cloudinit.settings import PER_INSTANCE
LSC_CLIENT_CFG_FILE = "/etc/landscape/client.conf"
LS_DEFAULT_FILE = "/etc/default/landscape-client"
# defaults taken from stock client.conf in landscape-client 11.07.1.1-0ubuntu2
LSC_BUILTIN_CFG = {
"client": {
"log_level": "info",
"url": "https://landscape.canonical.com/message-system",
"ping_url": "http://landscape.canonical.com/ping",
"data_path": "/var/lib/landscape/client",
}
}
MODULE_DESCRIPTION = """\
This module installs and configures ``landscape-client``. The landscape client
will only be installed if the key ``landscape`` is present in config. Landscape
client configuration is given under the ``client`` key under the main
``landscape`` config key. The config parameters are not interpreted by
cloud-init, but rather are converted into a ConfigObj formatted file and
written out to the `[client]` section in ``/etc/landscape/client.conf``.
The following default client config is provided, but can be overridden::
landscape:
client:
log_level: "info"
url: "https://landscape.canonical.com/message-system"
ping_url: "http://landscape.canoncial.com/ping"
data_path: "/var/lib/landscape/client"
.. note::
see landscape documentation for client config keys
.. note::
if ``tags`` is defined, its contents should be a string delimited with
``,`` rather than a list
"""
distros = ["ubuntu"]
meta: MetaSchema = {
"id": "cc_landscape",
"name": "Landscape",
"title": "Install and configure landscape client",
"description": MODULE_DESCRIPTION,
"distros": distros,
"examples": [
dedent(
"""\
# To discover additional supported client keys, run
# man landscape-config.
landscape:
client:
url: "https://landscape.canonical.com/message-system"
ping_url: "http://landscape.canonical.com/ping"
data_path: "/var/lib/landscape/client"
http_proxy: "http://my.proxy.com/foobar"
https_proxy: "https://my.proxy.com/foobar"
tags: "server,cloud"
computer_title: "footitle"
registration_key: "fookey"
account_name: "fooaccount"
"""
),
dedent(
"""\
# Any keys below `client` are optional and the default values will
# be used.
landscape:
client: {}
"""
),
],
"frequency": PER_INSTANCE,
}
__doc__ = get_meta_doc(meta)
def handle(_name, cfg, cloud, log, _args):
"""
Basically turn a top level 'landscape' entry with a 'client' dict
and render it to ConfigObj format under '[client]' section in
/etc/landscape/client.conf
"""
ls_cloudcfg = cfg.get("landscape", {})
if not isinstance(ls_cloudcfg, (dict)):
raise RuntimeError(
"'landscape' key existed in config, but not a dictionary type,"
" is a {_type} instead".format(
_type=type_utils.obj_name(ls_cloudcfg)
)
)
if not ls_cloudcfg:
return
cloud.distro.install_packages(("landscape-client",))
# Later order config values override earlier values
merge_data = [
LSC_BUILTIN_CFG,
LSC_CLIENT_CFG_FILE,
ls_cloudcfg,
]
merged = merge_together(merge_data)
contents = BytesIO()
merged.write(contents)
util.ensure_dir(os.path.dirname(LSC_CLIENT_CFG_FILE))
util.write_file(LSC_CLIENT_CFG_FILE, contents.getvalue())
log.debug("Wrote landscape config file to %s", LSC_CLIENT_CFG_FILE)
util.write_file(LS_DEFAULT_FILE, "RUN=1\n")
subp.subp(["service", "landscape-client", "restart"])
def merge_together(objs):
"""
merge together ConfigObj objects or things that ConfigObj() will take in
later entries override earlier
"""
cfg = ConfigObj({})
for obj in objs:
if not obj:
continue
if isinstance(obj, ConfigObj):
cfg.merge(obj)
else:
cfg.merge(ConfigObj(obj))
return cfg
# vi: ts=4 expandtab
|
