"""
Custom datasources for cloud initialization information
"""
import json
import yaml
from insights.core.context import HostContext
from insights.core.dr import SkipComponent
from insights.core.plugins import datasource
from insights.core.spec_factory import DatasourceProvider, simple_file
from insights.specs import Specs
[docs]class LocalSpecs(Specs):
""" Local specs used only by cloud_init datasources """
cloud_cfg_input = simple_file("/etc/cloud/cloud.cfg")
""" Returns the contents of the file ``/etc/cloud/cloud.cfg`` """
@datasource(LocalSpecs.cloud_cfg_input, HostContext)
def cloud_cfg(broker):
"""
This datasource provides the network configuration information collected
from ``/etc/cloud/cloud.cfg``.
Typical content of ``/etc/cloud/cloud.cfg`` file is::
#cloud-config
users:
- name: demo
ssh-authorized-keys:
- key_one
- key_two
passwd: $6$j212wezy$7H/1LT4f9/N3wpgNunhsIqtMj62OKiS3nyNwuizouQc3u7MbYCarYeAHWYPYb2FT.lbioDm2RrkJPb9BZMN1O/
network:
version: 1
config:
- type: physical
name: eth0
subnets:
- type: dhcp
- type: dhcp6
system_info:
default_user:
name: user2
plain_text_passwd: 'someP@assword'
home: /home/user2
debug:
output: /var/log/cloud-init-debug.log
verbose: true
Note:
This datasource may be executed using the following command:
``insights cat --no-header cloud_cfg``
Sample data returned includes only the ``network`` portion of the input file in JSON format::
{
"version": 1,
"config": [
{
"type": "physical",
"name": "eth0",
"subnets": [
{"type": "dhcp"},
{"type": "dhcp6"}
]
}
]
}
Returns:
str: JSON string when the ``network`` parameter includes content, else `None` is returned.
Raises:
SkipComponent: When the path does not exist or any exception occurs.
"""
relative_path = '/etc/cloud/cloud.cfg'
try:
content = broker[LocalSpecs.cloud_cfg_input].content
if content:
content = yaml.load('\n'.join(content), Loader=yaml.SafeLoader)
network_config = content.get('network', None)
if network_config:
return DatasourceProvider(content=json.dumps(network_config), relative_path=relative_path)
except Exception as e:
raise SkipComponent("Unexpected exception:{e}".format(e=str(e)))
raise SkipComponent('No network section in yaml')