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: DataSourceOpenStack.py

# Copyright (C) 2014 Yahoo! Inc.
#
# Author: Joshua Harlow <harlowja@yahoo-inc.com>
#
# This file is part of cloud-init. See LICENSE file for license information.

import logging
import time

from cloudinit import dmi, sources, url_helper, util
from cloudinit.event import EventScope, EventType
from cloudinit.net.dhcp import NoDHCPLeaseError
from cloudinit.net.ephemeral import EphemeralDHCPv4
from cloudinit.sources import DataSourceOracle as oracle
from cloudinit.sources.helpers import openstack

LOG = logging.getLogger(__name__)

# Various defaults/constants...
DEFAULT_IID = "iid-dsopenstack"
DEFAULT_METADATA = {
    "instance-id": DEFAULT_IID,
}

# OpenStack DMI constants
DMI_PRODUCT_NOVA = "OpenStack Nova"
DMI_PRODUCT_COMPUTE = "OpenStack Compute"
VALID_DMI_PRODUCT_NAMES = [DMI_PRODUCT_NOVA, DMI_PRODUCT_COMPUTE]
DMI_ASSET_TAG_OPENTELEKOM = "OpenTelekomCloud"
# See github.com/sapcc/helm-charts/blob/master/openstack/nova/values.yaml
# -> compute.defaults.vmware.smbios_asset_tag for this value
DMI_ASSET_TAG_SAPCCLOUD = "SAP CCloud VM"
DMI_ASSET_TAG_HUAWEICLOUD = "HUAWEICLOUD"
VALID_DMI_ASSET_TAGS = VALID_DMI_PRODUCT_NAMES
VALID_DMI_ASSET_TAGS += [
    DMI_ASSET_TAG_HUAWEICLOUD,
    DMI_ASSET_TAG_OPENTELEKOM,
    DMI_ASSET_TAG_SAPCCLOUD,
]

class DataSourceOpenStack(openstack.SourceMixin, sources.DataSource):

dsname = "OpenStack"

_network_config = sources.UNSET  # Used to cache calculated network cfg v1

# Whether we want to get network configuration from the metadata service.
    perform_dhcp_setup = False

supported_update_events = {
        EventScope.NETWORK: {
            EventType.BOOT_NEW_INSTANCE,
            EventType.BOOT,
            EventType.BOOT_LEGACY,
            EventType.HOTPLUG,
        }
    }

def __init__(self, sys_cfg, distro, paths):
        super(DataSourceOpenStack, self).__init__(sys_cfg, distro, paths)
        self.metadata_address = None
        self.ssl_details = util.fetch_ssl_details(self.paths)
        self.version = None
        self.files = {}
        self.ec2_metadata = sources.UNSET
        self.network_json = sources.UNSET

def __str__(self):
        root = sources.DataSource.__str__(self)
        mstr = "%s [%s,ver=%s]" % (root, self.dsmode, self.version)
        return mstr

def wait_for_metadata_service(self):
        DEF_MD_URLS = [
            "http://[fe80::a9fe:a9fe%25{iface}]".format(
                iface=self.distro.fallback_interface
            ),
            "http://169.254.169.254",
        ]
        urls = self.ds_cfg.get("metadata_urls", DEF_MD_URLS)
        filtered = [x for x in urls if util.is_resolvable_url(x)]
        if set(filtered) != set(urls):
            LOG.debug(
                "Removed the following from metadata urls: %s",
                list((set(urls) - set(filtered))),
            )
        if len(filtered):
            urls = filtered
        else:
            LOG.warning("Empty metadata url list! using default list")
            urls = DEF_MD_URLS

md_urls = []
        url2base = {}
        for url in urls:
            md_url = url_helper.combine_url(url, "openstack")
            md_urls.append(md_url)
            url2base[md_url] = url

url_params = self.get_url_params()
        start_time = time.monotonic()
        avail_url, _response = url_helper.wait_for_url(
            urls=md_urls,
            max_wait=url_params.max_wait_seconds,
            timeout=url_params.timeout_seconds,
            connect_synchronously=False,
        )
        if avail_url:
            LOG.debug("Using metadata source: '%s'", url2base[avail_url])
        else:
            LOG.debug(
                "Giving up on OpenStack md from %s after %s seconds",
                md_urls,
                int(time.monotonic() - start_time),
            )

self.metadata_address = url2base.get(avail_url)
        return bool(avail_url)

def check_instance_id(self, sys_cfg):
        # quickly (local check only) if self.instance_id is still valid
        return sources.instance_id_matches_system_uuid(self.get_instance_id())

@property
    def network_config(self):
        """Return a network config dict for rendering ENI or netplan files."""
        if self._network_config != sources.UNSET:
            return self._network_config

# RELEASE_BLOCKER: SRU to Xenial and Artful SRU should not provide
        # network_config by default unless configured in /etc/cloud/cloud.cfg*.
        # Patch Xenial and Artful before release to default to False.
        if util.is_false(self.ds_cfg.get("apply_network_config", True)):
            self._network_config = None
            return self._network_config
        if self.network_json == sources.UNSET:
            # this would happen if get_data hadn't been called. leave as UNSET
            LOG.warning(
                "Unexpected call to network_config when network_json is None."
            )
            return None

LOG.debug("network config provided via network_json")
        self._network_config = openstack.convert_net_json(
            self.network_json, known_macs=None
        )
        return self._network_config

def _get_data(self):
        """Crawl metadata, parse and persist that data for this instance.

@return: True when metadata discovered indicates OpenStack datasource.
            False when unable to contact metadata service or when metadata
            format is invalid or disabled.
        """

if self.perform_dhcp_setup:  # Setup networking in init-local stage.
            try:

with EphemeralDHCPv4(
                    self.distro, self.distro.fallback_interface
                ):
                    results = self._crawl_metadata()
            except (NoDHCPLeaseError, sources.InvalidMetaDataException) as e:
                util.logexc(LOG, str(e))
                return False
        else:
            try:
                results = self._crawl_metadata()
            except sources.InvalidMetaDataException as e:
                util.logexc(LOG, str(e))
                return False

self.dsmode = self._determine_dsmode([results.get("dsmode")])
        if self.dsmode == sources.DSMODE_DISABLED:
            return False
        md = results.get("metadata", {})
        md = util.mergemanydict([md, DEFAULT_METADATA])
        self.metadata = md
        self.ec2_metadata = results.get("ec2-metadata")
        self.network_json = results.get("networkdata")
        self.userdata_raw = results.get("userdata")
        self.version = results["version"]
        self.files.update(results.get("files", {}))

vd = results.get("vendordata")
        try:
            self.vendordata_raw = sources.convert_vendordata(vd)
        except ValueError as e:
            LOG.warning("Invalid content in vendor-data: %s", e)
            self.vendordata_raw = None

vd2 = results.get("vendordata2")
        try:
            self.vendordata2_raw = sources.convert_vendordata(vd2)
        except ValueError as e:
            LOG.warning("Invalid content in vendor-data2: %s", e)
            self.vendordata2_raw = None

return True

def _crawl_metadata(self):
        """Crawl metadata service when available.

@returns: Dictionary with all metadata discovered for this datasource.
        @raise: InvalidMetaDataException on unreadable or broken
            metadata.
        """
        try:
            if not self.wait_for_metadata_service():
                raise sources.InvalidMetaDataException(
                    "No active metadata service found"
                )
        except IOError as e:
            raise sources.InvalidMetaDataException(
                "IOError contacting metadata service: {error}".format(
                    error=str(e)
                )
            )

url_params = self.get_url_params()

try:
            result = read_metadata_service(
                self.metadata_address,
                ssl_details=self.ssl_details,
                retries=url_params.num_retries,
                timeout=url_params.timeout_seconds,
            )
        except openstack.NonReadable as e:
            raise sources.InvalidMetaDataException(str(e))
        except (openstack.BrokenMetadata, IOError) as e:
            msg = "Broken metadata address {addr}".format(
                addr=self.metadata_address
            )
            raise sources.InvalidMetaDataException(msg) from e
        return result

def ds_detect(self):
        """Return True when a potential OpenStack platform is detected."""
        accept_oracle = "Oracle" in self.sys_cfg.get("datasource_list")
        if not util.is_x86():
            # Non-Intel cpus don't properly report dmi product names
            return True

product_name = dmi.read_dmi_data("system-product-name")
        if product_name in VALID_DMI_PRODUCT_NAMES:
            return True
        elif dmi.read_dmi_data("chassis-asset-tag") in VALID_DMI_ASSET_TAGS:
            return True
        elif accept_oracle and oracle._is_platform_viable():
            return True
        elif util.get_proc_env(1).get("product_name") == DMI_PRODUCT_NOVA:
            return True
        return False

class DataSourceOpenStackLocal(DataSourceOpenStack):
    """Run in init-local using a dhcp discovery prior to metadata crawl.

In init-local, no network is available. This subclass sets up minimal
    networking with dhclient on a viable nic so that it can talk to the
    metadata service. If the metadata service provides network configuration
    then render the network configuration for that instance based on metadata.
    """

perform_dhcp_setup = True  # Get metadata network config if present

def read_metadata_service(base_url, ssl_details=None, timeout=5, retries=5):
    reader = openstack.MetadataReader(
        base_url, ssl_details=ssl_details, timeout=timeout, retries=retries
    )
    return reader.read_v2()

# Used to match classes to dependencies
datasources = [
    (DataSourceOpenStackLocal, (sources.DEP_FILESYSTEM,)),
    (DataSourceOpenStack, (sources.DEP_FILESYSTEM, sources.DEP_NETWORK)),
]

# Return a list of data sources that match this set of dependencies
def get_datasource_list(depends):
    return sources.list_from_depends(depends, datasources)

NAME	TYPE	LAST MODIFIED	SIZE	OWNER / GROUP	PERMISSIONS	ACTION
..
DataSourceAkamai.py	f!le	2025-01-15 15:24	12.66 KB	root / root	-rw-r--r--
DataSourceAliYun.py	f!le	2025-01-15 15:24	3.26 KB	root / root	-rw-r--r--
DataSourceAltCloud.py	f!le	2025-01-15 15:24	8.42 KB	root / root	-rw-r--r--
DataSourceAzure.py	f!le	2025-01-15 15:24	75.51 KB	root / root	-rw-r--r--
DataSourceBigstep.py	f!le	2025-01-15 15:24	1.9 KB	root / root	-rw-r--r--
DataSourceCloudCIX.py	f!le	2025-01-15 15:24	5.19 KB	root / root	-rw-r--r--
DataSourceCloudSigma.py	f!le	2025-01-15 15:24	3.86 KB	root / root	-rw-r--r--
DataSourceCloudStack.py	f!le	2025-01-15 15:24	11.21 KB	root / root	-rw-r--r--
DataSourceConfigDrive.py	f!le	2025-01-15 15:24	11.23 KB	root / root	-rw-r--r--
DataSourceDigitalOcean.py	f!le	2025-01-15 15:24	4.2 KB	root / root	-rw-r--r--
DataSourceEc2.py	f!le	2025-06-25 15:09	42.11 KB	root / root	-rw-r--r--
DataSourceExoscale.py	f!le	2025-01-15 15:24	8.62 KB	root / root	-rw-r--r--
DataSourceGCE.py	f!le	2025-01-15 15:24	13.33 KB	root / root	-rw-r--r--
DataSourceHetzner.py	f!le	2025-01-15 15:24	5.39 KB	root / root	-rw-r--r--
DataSourceIBMCloud.py	f!le	2025-01-15 15:24	14.65 KB	root / root	-rw-r--r--
DataSourceLXD.py	f!le	2025-01-15 15:24	17.2 KB	root / root	-rw-r--r--
DataSourceMAAS.py	f!le	2025-01-15 15:24	14.85 KB	root / root	-rw-r--r--
DataSourceNWCS.py	f!le	2025-01-15 15:24	4.41 KB	root / root	-rw-r--r--
DataSourceNoCloud.py	f!le	2025-06-25 15:09	15.93 KB	root / root	-rw-r--r--
DataSourceNone.py	f!le	2025-01-15 15:24	1.27 KB	root / root	-rw-r--r--
DataSourceOVF.py	f!le	2025-01-15 15:24	12.7 KB	root / root	-rw-r--r--
DataSourceOpenNebula.py	f!le	2025-01-15 15:24	15.67 KB	root / root	-rw-r--r--
DataSourceOpenStack.py	f!le	2025-01-15 15:24	10.1 KB	root / root	-rw-r--r--
DataSourceOracle.py	f!le	2025-01-15 15:24	21.07 KB	root / root	-rw-r--r--
DataSourceRbxCloud.py	f!le	2025-01-15 15:24	7.85 KB	root / root	-rw-r--r--
DataSourceScaleway.py	f!le	2025-01-15 15:24	14.73 KB	root / root	-rw-r--r--
DataSourceSmartOS.py	f!le	2025-01-15 15:24	34.26 KB	root / root	-rw-r--r--
DataSourceUpCloud.py	f!le	2025-01-15 15:24	5.2 KB	root / root	-rw-r--r--
DataSourceVMware.py	f!le	2025-01-15 15:24	35.31 KB	root / root	-rw-r--r--
DataSourceVultr.py	f!le	2025-01-15 15:24	4.51 KB	root / root	-rw-r--r--
DataSourceWSL.py	f!le	2025-01-15 15:24	14.37 KB	root / root	-rw-r--r--
__init__.py	f!le	2025-06-25 15:09	44.31 KB	root / root	-rw-r--r--

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