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# This file is part of cloud-init. See LICENSE file for license information.
"""Debug network config format conversions."""
import argparse
import json
import os
import sys
from cloudinit import distros, log, safeyaml
from cloudinit.net import eni, netplan, network_state, networkd, sysconfig
from cloudinit.sources import DataSourceAzure as azure
from cloudinit.sources import DataSourceOVF as ovf
from cloudinit.sources.helpers import openstack
NAME = "net-convert"
def get_parser(parser=None):
"""Build or extend and arg parser for net-convert utility.
@param parser: Optional existing ArgumentParser instance representing the
subcommand which will be extended to support the args of this utility.
@returns: ArgumentParser with proper argument configuration.
"""
if not parser:
parser = argparse.ArgumentParser(prog=NAME, description=__doc__)
parser.add_argument(
"-p",
"--network-data",
type=open,
metavar="PATH",
required=True,
help="The network configuration to read",
)
parser.add_argument(
"-k",
"--kind",
choices=[
"eni",
"network_data.json",
"yaml",
"azure-imds",
"vmware-imc",
],
required=True,
help="The format of the given network config",
)
parser.add_argument(
"-d",
"--directory",
metavar="PATH",
help="directory to place output in",
required=True,
)
parser.add_argument(
"-D",
"--distro",
choices=[
item for sublist in distros.OSFAMILIES.values() for item in sublist
],
required=True,
)
parser.add_argument(
"-m",
"--mac",
metavar="name,mac",
action="append",
help="interface name to mac mapping",
)
parser.add_argument(
"--debug", action="store_true", help="enable debug logging to stderr."
)
parser.add_argument(
"-O",
"--output-kind",
choices=["eni", "netplan", "networkd", "sysconfig"],
required=True,
help="The network config format to emit",
)
return parser
def handle_args(name, args):
if not args.directory.endswith("/"):
args.directory += "/"
if not os.path.isdir(args.directory):
os.makedirs(args.directory)
if args.debug:
log.setupBasicLogging(level=log.DEBUG)
else:
log.setupBasicLogging(level=log.WARN)
if args.mac:
known_macs = {}
for item in args.mac:
iface_name, iface_mac = item.split(",", 1)
known_macs[iface_mac] = iface_name
else:
known_macs = None
net_data = args.network_data.read()
if args.kind == "eni":
pre_ns = eni.convert_eni_data(net_data)
elif args.kind == "yaml":
pre_ns = safeyaml.load(net_data)
if "network" in pre_ns:
pre_ns = pre_ns.get("network")
if args.debug:
sys.stderr.write(
"\n".join(["Input YAML", safeyaml.dumps(pre_ns), ""])
)
elif args.kind == "network_data.json":
pre_ns = openstack.convert_net_json(
json.loads(net_data), known_macs=known_macs
)
elif args.kind == "azure-imds":
pre_ns = azure.parse_network_config(json.loads(net_data))
elif args.kind == "vmware-imc":
config = ovf.Config(ovf.ConfigFile(args.network_data.name))
pre_ns = ovf.get_network_config_from_conf(config, False)
ns = network_state.parse_net_config_data(pre_ns)
if args.debug:
sys.stderr.write(
"\n".join(["", "Internal State", safeyaml.dumps(ns), ""])
)
distro_cls = distros.fetch(args.distro)
distro = distro_cls(args.distro, {}, None)
config = {}
if args.output_kind == "eni":
r_cls = eni.Renderer
config = distro.renderer_configs.get("eni")
elif args.output_kind == "netplan":
r_cls = netplan.Renderer
config = distro.renderer_configs.get("netplan")
# don't run netplan generate/apply
config["postcmds"] = False
# trim leading slash
config["netplan_path"] = config["netplan_path"][1:]
# enable some netplan features
config["features"] = ["dhcp-use-domains", "ipv6-mtu"]
elif args.output_kind == "networkd":
r_cls = networkd.Renderer
config = distro.renderer_configs.get("networkd")
elif args.output_kind == "sysconfig":
r_cls = sysconfig.Renderer
config = distro.renderer_configs.get("sysconfig")
else:
raise RuntimeError("Invalid output_kind")
r = r_cls(config=config)
sys.stderr.write(
"".join(
[
"Read input format '%s' from '%s'.\n"
% (args.kind, args.network_data.name),
"Wrote output format '%s' to '%s'\n"
% (args.output_kind, args.directory),
]
)
+ "\n"
)
r.render_network_state(network_state=ns, target=args.directory)
if __name__ == "__main__":
args = get_parser().parse_args()
handle_args(NAME, args)
# vi: ts=4 expandtab
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