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# Author: Jonas Keidel <jonas.keidel@hetzner.com>
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# Author: Markus Schade <markus.schade@hetzner.com>
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#
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# This file is part of cloud-init. See LICENSE file for license information.
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#
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"""Hetzner Cloud API Documentation.
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https://docs.hetzner.cloud/"""
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from cloudinit import log as logging
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from cloudinit import net as cloudnet
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from cloudinit import sources
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from cloudinit import util
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import cloudinit.sources.helpers.hetzner as hc_helper
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LOG = logging.getLogger(__name__)
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BASE_URL_V1 = 'http://169.254.169.254/hetzner/v1'
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BUILTIN_DS_CONFIG = {
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'metadata_url': BASE_URL_V1 + '/metadata',
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'userdata_url': BASE_URL_V1 + '/userdata',
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}
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MD_RETRIES = 60
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MD_TIMEOUT = 2
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MD_WAIT_RETRY = 2
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class DataSourceHetzner(sources.DataSource):
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dsname = 'Hetzner'
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def __init__(self, sys_cfg, distro, paths):
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sources.DataSource.__init__(self, sys_cfg, distro, paths)
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self.distro = distro
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self.metadata = dict()
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self.ds_cfg = util.mergemanydict([
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util.get_cfg_by_path(sys_cfg, ["datasource", "Hetzner"], {}),
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BUILTIN_DS_CONFIG])
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self.metadata_address = self.ds_cfg['metadata_url']
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self.userdata_address = self.ds_cfg['userdata_url']
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self.retries = self.ds_cfg.get('retries', MD_RETRIES)
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self.timeout = self.ds_cfg.get('timeout', MD_TIMEOUT)
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self.wait_retry = self.ds_cfg.get('wait_retry', MD_WAIT_RETRY)
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self._network_config = None
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self.dsmode = sources.DSMODE_NETWORK
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def get_data(self):
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if not on_hetzner():
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return False
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nic = cloudnet.find_fallback_nic()
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with cloudnet.EphemeralIPv4Network(nic, "169.254.0.1", 16,
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"169.254.255.255"):
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md = hc_helper.read_metadata(
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self.metadata_address, timeout=self.timeout,
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sec_between=self.wait_retry, retries=self.retries)
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ud = hc_helper.read_userdata(
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self.userdata_address, timeout=self.timeout,
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sec_between=self.wait_retry, retries=self.retries)
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self.userdata_raw = ud
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self.metadata_full = md
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"""hostname is name provided by user at launch. The API enforces
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it is a valid hostname, but it is not guaranteed to be resolvable
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in dns or fully qualified."""
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self.metadata['instance-id'] = md['instance-id']
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self.metadata['local-hostname'] = md['hostname']
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self.metadata['network-config'] = md.get('network-config', None)
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self.metadata['public-keys'] = md.get('public-keys', None)
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self.vendordata_raw = md.get("vendor_data", None)
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return True
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@property
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def network_config(self):
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"""Configure the networking. This needs to be done each boot, since
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the IP information may have changed due to snapshot and/or
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migration.
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"""
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if self._network_config:
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return self._network_config
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_net_config = self.metadata['network-config']
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if not _net_config:
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raise Exception("Unable to get meta-data from server....")
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self._network_config = _net_config
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return self._network_config
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def on_hetzner():
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return util.read_dmi_data('system-manufacturer') == "Hetzner"
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# Used to match classes to dependencies
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datasources = [
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(DataSourceHetzner, (sources.DEP_FILESYSTEM, )),
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]
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# Return a list of data sources that match this set of dependencies
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def get_datasource_list(depends):
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return sources.list_from_depends(depends, datasources)
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# vi: ts=4 expandtab
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