Source code for insights.specs.datasources.cloud_init

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')