diff options
Diffstat (limited to 'cloudinit/sources/helpers/openstack.py')
| -rw-r--r-- | cloudinit/sources/helpers/openstack.py | 169 |
1 files changed, 159 insertions, 10 deletions
diff --git a/cloudinit/sources/helpers/openstack.py b/cloudinit/sources/helpers/openstack.py index 1aa6bbae..d52cb56a 100644 --- a/cloudinit/sources/helpers/openstack.py +++ b/cloudinit/sources/helpers/openstack.py @@ -28,6 +28,7 @@ import six from cloudinit import ec2_utils from cloudinit import log as logging +from cloudinit import net from cloudinit import sources from cloudinit import url_helper from cloudinit import util @@ -145,8 +146,8 @@ class SourceMixin(object): return device +@six.add_metaclass(abc.ABCMeta) class BaseReader(object): - __metaclass__ = abc.ABCMeta def __init__(self, base_path): self.base_path = base_path @@ -156,7 +157,7 @@ class BaseReader(object): pass @abc.abstractmethod - def _path_read(self, path): + def _path_read(self, path, decode=False): pass @abc.abstractmethod @@ -190,14 +191,14 @@ class BaseReader(object): versions_available) return selected_version - def _read_content_path(self, item): + def _read_content_path(self, item, decode=False): path = item.get('content_path', '').lstrip("/") path_pieces = path.split("/") valid_pieces = [p for p in path_pieces if len(p)] if not valid_pieces: raise BrokenMetadata("Item %s has no valid content path" % (item)) path = self._path_join(self.base_path, "openstack", *path_pieces) - return self._path_read(path) + return self._path_read(path, decode=decode) def read_v2(self): """Reads a version 2 formatted location. @@ -298,7 +299,8 @@ class BaseReader(object): net_item = metadata.get("network_config", None) if net_item: try: - results['network_config'] = self._read_content_path(net_item) + content = self._read_content_path(net_item, decode=True) + results['network_config'] = content except IOError as e: raise BrokenMetadata("Failed to read network" " configuration: %s" % (e)) @@ -333,8 +335,8 @@ class ConfigDriveReader(BaseReader): components = [base] + list(add_ons) return os.path.join(*components) - def _path_read(self, path): - return util.load_file(path, decode=False) + def _path_read(self, path, decode=False): + return util.load_file(path, decode=decode) def _fetch_available_versions(self): if self._versions is None: @@ -446,7 +448,7 @@ class MetadataReader(BaseReader): self._versions = found return self._versions - def _path_read(self, path): + def _path_read(self, path, decode=False): def should_retry_cb(_request_args, cause): try: @@ -463,7 +465,10 @@ class MetadataReader(BaseReader): ssl_details=self.ssl_details, timeout=self.timeout, exception_cb=should_retry_cb) - return response.contents + if decode: + return response.contents.decode() + else: + return response.contents def _path_join(self, base, *add_ons): return url_helper.combine_url(base, *add_ons) @@ -474,8 +479,152 @@ class MetadataReader(BaseReader): retries=self.retries) +# Convert OpenStack ConfigDrive NetworkData json to network_config yaml +def convert_net_json(network_json=None, known_macs=None): + """Return a dictionary of network_config by parsing provided + OpenStack ConfigDrive NetworkData json format + + OpenStack network_data.json provides a 3 element dictionary + - "links" (links are network devices, physical or virtual) + - "networks" (networks are ip network configurations for one or more + links) + - services (non-ip services, like dns) + + networks and links are combined via network items referencing specific + links via a 'link_id' which maps to a links 'id' field. + + To convert this format to network_config yaml, we first iterate over the + links and then walk the network list to determine if any of the networks + utilize the current link; if so we generate a subnet entry for the device + + We also need to map network_data.json fields to network_config fields. For + example, the network_data links 'id' field is equivalent to network_config + 'name' field for devices. We apply more of this mapping to the various + link types that we encounter. + + There are additional fields that are populated in the network_data.json + from OpenStack that are not relevant to network_config yaml, so we + enumerate a dictionary of valid keys for network_yaml and apply filtering + to drop these superflous keys from the network_config yaml. + """ + if network_json is None: + return None + + # dict of network_config key for filtering network_json + valid_keys = { + 'physical': [ + 'name', + 'type', + 'mac_address', + 'subnets', + 'params', + 'mtu', + ], + 'subnet': [ + 'type', + 'address', + 'netmask', + 'broadcast', + 'metric', + 'gateway', + 'pointopoint', + 'scope', + 'dns_nameservers', + 'dns_search', + 'routes', + ], + } + + links = network_json.get('links', []) + networks = network_json.get('networks', []) + services = network_json.get('services', []) + + config = [] + for link in links: + subnets = [] + cfg = {k: v for k, v in link.items() + if k in valid_keys['physical']} + # 'name' is not in openstack spec yet, but we will support it if it is + # present. The 'id' in the spec is currently implemented as the host + # nic's name, meaning something like 'tap-adfasdffd'. We do not want + # to name guest devices with such ugly names. + if 'name' in link: + cfg['name'] = link['name'] + + for network in [n for n in networks + if n['link'] == link['id']]: + subnet = {k: v for k, v in network.items() + if k in valid_keys['subnet']} + if 'dhcp' in network['type']: + t = 'dhcp6' if network['type'].startswith('ipv6') else 'dhcp4' + subnet.update({ + 'type': t, + }) + else: + subnet.update({ + 'type': 'static', + 'address': network.get('ip_address'), + }) + if network['type'] == 'ipv4': + subnet['ipv4'] = True + if network['type'] == 'ipv6': + subnet['ipv6'] = True + subnets.append(subnet) + cfg.update({'subnets': subnets}) + if link['type'] in ['ethernet', 'vif', 'ovs', 'phy', 'bridge']: + cfg.update({ + 'type': 'physical', + 'mac_address': link['ethernet_mac_address']}) + elif link['type'] in ['bond']: + params = {} + for k, v in link.items(): + if k == 'bond_links': + continue + elif k.startswith('bond'): + params.update({k: v}) + cfg.update({ + 'bond_interfaces': copy.deepcopy(link['bond_links']), + 'params': params, + }) + elif link['type'] in ['vlan']: + cfg.update({ + 'name': "%s.%s" % (link['vlan_link'], + link['vlan_id']), + 'vlan_link': link['vlan_link'], + 'vlan_id': link['vlan_id'], + 'mac_address': link['vlan_mac_address'], + }) + else: + raise ValueError( + 'Unknown network_data link type: %s' % link['type']) + + config.append(cfg) + + need_names = [d for d in config + if d.get('type') == 'physical' and 'name' not in d] + + if need_names: + if known_macs is None: + known_macs = net.get_interfaces_by_mac() + + for d in need_names: + mac = d.get('mac_address') + if not mac: + raise ValueError("No mac_address or name entry for %s" % d) + if mac not in known_macs: + raise ValueError("Unable to find a system nic for %s" % d) + d['name'] = known_macs[mac] + + for service in services: + cfg = service + cfg.update({'type': 'nameserver'}) + config.append(cfg) + + return {'version': 1, 'config': config} + + def convert_vendordata_json(data, recurse=True): - """ data: a loaded json *object* (strings, arrays, dicts). + """data: a loaded json *object* (strings, arrays, dicts). return something suitable for cloudinit vendordata_raw. if data is: |