110 lines
3.6 KiB
Python
110 lines
3.6 KiB
Python
#
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# Copyright (c) 2014 EUROGICIEL
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#
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# Licensed under the Apache License, Version 2.0 (the "License"); you may
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# not use this file except in compliance with the License. You may obtain
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# a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
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# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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# See the License for the specific language governing permissions and
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# limitations under the License.
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#
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import functools
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from novaclient.v3 import client as nova_client
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from oslo.config import cfg
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from cerberus.openstack.common import log
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OPTS = [
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cfg.BoolOpt('nova_http_log_debug',
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default=False,
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help='Allow novaclient\'s debug log output.'),
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]
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SERVICE_OPTS = [
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cfg.StrOpt('nova',
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default='compute',
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help='Nova service type.'),
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]
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cfg.CONF.register_opts(OPTS)
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cfg.CONF.register_opts(SERVICE_OPTS, group='service_types')
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# cfg.CONF.import_opt('http_timeout', 'cerberus.service')
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cfg.CONF.import_group('service_credentials', 'cerberus.service')
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LOG = log.getLogger(__name__)
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def logged(func):
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@functools.wraps(func)
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def with_logging(*args, **kwargs):
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try:
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return func(*args, **kwargs)
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except Exception as e:
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LOG.exception(e)
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raise
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return with_logging
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class Client(object):
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"""A client which gets information via python-novaclient."""
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def __init__(self, bypass_url=None, auth_token=None):
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"""Initialize a nova client object."""
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conf = cfg.CONF.service_credentials
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tenant = conf.os_tenant_id or conf.os_tenant_name
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self.nova_client = nova_client.Client(
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username=conf.os_username,
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project_id=tenant,
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auth_url=conf.os_auth_url,
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password=conf.os_password,
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region_name=conf.os_region_name,
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endpoint_type=conf.os_endpoint_type,
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service_type=cfg.CONF.service_types.nova,
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bypass_url=bypass_url,
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cacert=conf.os_cacert,
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insecure=conf.insecure,
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http_log_debug=cfg.CONF.nova_http_log_debug,
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no_cache=True)
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@logged
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def instance_get_all(self):
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"""Returns list of all instances."""
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search_opts = {'all_tenants': True}
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return self.nova_client.servers.list(
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detailed=True,
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search_opts=search_opts)
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@logged
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def get_instance_details_from_floating_ip(self, ip):
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"""
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Get instance_id which is associated to the floating ip "ip"
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:param ip: the floating ip that should belong to an instance
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:return instance_id if ip is found, else None
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"""
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instances = self.instance_get_all()
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try:
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for instance in instances:
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# An instance can belong to many networks. An instance can
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# have two ips in a network:
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# at least a private ip and potentially a floating ip
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addresses_in_networks = instance.addresses.values()
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for addresses_in_network in addresses_in_networks:
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for address_in_network in addresses_in_network:
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if ((address_in_network.get('OS-EXT-IPS:type', None)
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== 'floating')
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and (address_in_network['addr'] == ip)):
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return instance
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except Exception as e:
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LOG.exception(e)
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raise
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return None
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