297 lines
12 KiB
Python
297 lines
12 KiB
Python
# Copyright (c) 2013 VMware, Inc. All rights reserved.
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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. See the
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# License for the specific language governing permissions and limitations
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# under the License.
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#
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from __future__ import print_function
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from __future__ import division
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from __future__ import absolute_import
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import novaclient.client
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from oslo_log import log as logging
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import six
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from congress.datasources import constants
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from congress.datasources import datasource_driver
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from congress.datasources import datasource_utils as ds_utils
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LOG = logging.getLogger(__name__)
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class NovaDriver(datasource_driver.PollingDataSourceDriver,
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datasource_driver.ExecutionDriver):
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SERVERS = "servers"
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FLAVORS = "flavors"
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HOSTS = "hosts"
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FLOATING_IPS = "floating_IPs"
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SERVICES = 'services'
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AVAILABILITY_ZONES = "availability_zones"
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# This is the most common per-value translator, so define it once here.
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value_trans = {'translation-type': 'VALUE'}
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def safe_id(x):
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if isinstance(x, six.string_types):
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return x
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try:
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return x['id']
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except Exception:
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return str(x)
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servers_translator = {
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'translation-type': 'HDICT',
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'table-name': SERVERS,
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'selector-type': 'DOT_SELECTOR',
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'field-translators':
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({'fieldname': 'id', 'desc': 'The UUID for the server',
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'translator': value_trans},
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{'fieldname': 'name', 'desc': 'Name of the server',
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'translator': value_trans},
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{'fieldname': 'hostId', 'col': 'host_id',
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'desc': 'The UUID for the host', 'translator': value_trans},
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{'fieldname': 'status', 'desc': 'The server status',
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'translator': value_trans},
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{'fieldname': 'tenant_id', 'desc': 'The tenant ID',
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'translator': value_trans},
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{'fieldname': 'user_id',
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'desc': 'The user ID of the user who owns the server',
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'translator': value_trans},
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{'fieldname': 'image', 'col': 'image_id',
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'desc': 'Name or ID of image',
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'translator': {'translation-type': 'VALUE',
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'extract-fn': safe_id}},
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{'fieldname': 'flavor', 'col': 'flavor_id',
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'desc': 'Name of the flavor',
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'translator': {'translation-type': 'VALUE',
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'extract-fn': safe_id}},
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{'fieldname': 'OS-EXT-AZ:availability_zone', 'col': 'zone',
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'desc': 'The availability zone of host',
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'translator': value_trans},
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{'fieldname': 'OS-EXT-SRV-ATTR:hypervisor_hostname',
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'desc': ('The hostname of hypervisor where the server is' +
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'running'),
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'col': 'host_name', 'translator': value_trans})}
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flavors_translator = {
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'translation-type': 'HDICT',
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'table-name': FLAVORS,
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'selector-type': 'DOT_SELECTOR',
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'field-translators':
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({'fieldname': 'id', 'desc': 'ID of the flavor',
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'translator': value_trans},
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{'fieldname': 'name', 'desc': 'Name of the flavor',
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'translator': value_trans},
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{'fieldname': 'vcpus', 'desc': 'Number of vcpus',
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'translator': value_trans},
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{'fieldname': 'ram', 'desc': 'Memory size in MB',
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'translator': value_trans},
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{'fieldname': 'disk', 'desc': 'Disk size in GB',
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'translator': value_trans},
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{'fieldname': 'ephemeral', 'desc': 'Ephemeral space size in GB',
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'translator': value_trans},
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{'fieldname': 'rxtx_factor', 'desc': 'RX/TX factor',
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'translator': value_trans})}
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hosts_translator = {
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'translation-type': 'HDICT',
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'table-name': HOSTS,
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'selector-type': 'DOT_SELECTOR',
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'field-translators':
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({'fieldname': 'host_name', 'desc': 'Name of host',
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'translator': value_trans},
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{'fieldname': 'service', 'desc': 'Enabled service',
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'translator': value_trans},
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{'fieldname': 'zone', 'desc': 'The availability zone of host',
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'translator': value_trans})}
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floating_ips_translator = {
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'translation-type': 'HDICT',
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'table-name': FLOATING_IPS,
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'selector-type': 'DOT_SELECTOR',
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'field-translators':
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({'fieldname': 'fixed_ip', 'desc': 'Fixed IP Address',
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'translator': value_trans},
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{'fieldname': 'id', 'desc': 'Unique ID',
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'translator': value_trans},
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{'fieldname': 'ip', 'desc': 'IP Address',
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'translator': value_trans},
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{'fieldname': 'instance_id',
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'desc': 'Name or ID of host', 'translator': value_trans},
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{'fieldname': 'pool', 'desc': 'Name of Floating IP Pool',
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'translator': value_trans})}
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services_translator = {
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'translation-type': 'HDICT',
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'table-name': SERVICES,
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'selector-type': 'DOT_SELECTOR',
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'field-translators':
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({'fieldname': 'id', 'col': 'service_id', 'desc': 'Service ID',
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'translator': value_trans},
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{'fieldname': 'binary', 'desc': 'Service binary',
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'translator': value_trans},
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{'fieldname': 'host', 'desc': 'Host Name',
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'translator': value_trans},
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{'fieldname': 'zone', 'desc': 'Availability Zone',
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'translator': value_trans},
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{'fieldname': 'status', 'desc': 'Status of service',
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'translator': value_trans},
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{'fieldname': 'state', 'desc': 'State of service',
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'translator': value_trans},
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{'fieldname': 'updated_at', 'desc': 'Last updated time',
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'translator': value_trans},
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{'fieldname': 'disabled_reason', 'desc': 'Disabled reason',
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'translator': value_trans})}
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availability_zones_translator = {
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'translation-type': 'HDICT',
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'table-name': AVAILABILITY_ZONES,
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'selector-type': 'DOT_SELECTOR',
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'field-translators':
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({'fieldname': 'zoneName', 'col': 'zone',
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'desc': 'Availability zone name', 'translator': value_trans},
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{'fieldname': 'zoneState', 'col': 'state',
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'desc': 'Availability zone state',
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'translator': value_trans})}
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TRANSLATORS = [servers_translator, flavors_translator, hosts_translator,
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floating_ips_translator, services_translator,
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availability_zones_translator]
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def __init__(self, name='', args=None):
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super(NovaDriver, self).__init__(name, args)
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datasource_driver.ExecutionDriver.__init__(self)
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self.creds = args
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session = ds_utils.get_keystone_session(self.creds)
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self.nova_client = novaclient.client.Client(
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version=self.creds.get('api_version', '2'), session=session)
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self.add_executable_method('servers_set_meta',
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[{'name': 'server',
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'description': 'server id'},
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{'name': 'meta',
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'description': 'metadata pairs, ' +
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'e.g. meta1=val1 meta2=val2'}],
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"A wrapper for servers.set_meta()")
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self.add_executable_client_methods(self.nova_client, 'novaclient.v2.')
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self.initialize_update_methods()
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self._init_end_start_poll()
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@staticmethod
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def get_datasource_info():
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result = {}
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result['id'] = 'nova'
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result['description'] = ('Datasource driver that interfaces with '
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'OpenStack Compute aka nova.')
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result['config'] = ds_utils.get_openstack_required_config()
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result['config']['api_version'] = constants.OPTIONAL
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result['config']['lazy_tables'] = constants.OPTIONAL
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result['secret'] = ['password']
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return result
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def initialize_update_methods(self):
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servers_method = lambda: self._translate_servers(
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self.nova_client.servers.list(
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detailed=True, search_opts={"all_tenants": 1}))
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self.add_update_method(servers_method, self.servers_translator)
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flavors_method = lambda: self._translate_flavors(
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self.nova_client.flavors.list())
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self.add_update_method(flavors_method, self.flavors_translator)
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hosts_method = lambda: self._translate_hosts(
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self.nova_client.hosts.list())
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self.add_update_method(hosts_method, self.hosts_translator)
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floating_ips_method = lambda: self._translate_floating_ips(
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self.nova_client.floating_ips.list())
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self.add_update_method(floating_ips_method,
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self.floating_ips_translator)
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services_method = lambda: self._translate_services(
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self.nova_client.services.list())
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self.add_update_method(services_method, self.services_translator)
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az_method = lambda: self._translate_availability_zones(
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self.nova_client.availability_zones.list())
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self.add_update_method(az_method, self.availability_zones_translator)
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@ds_utils.update_state_on_changed(SERVERS)
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def _translate_servers(self, obj):
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row_data = NovaDriver.convert_objs(obj, NovaDriver.servers_translator)
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return row_data
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@ds_utils.update_state_on_changed(FLAVORS)
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def _translate_flavors(self, obj):
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row_data = NovaDriver.convert_objs(obj, NovaDriver.flavors_translator)
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return row_data
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@ds_utils.update_state_on_changed(HOSTS)
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def _translate_hosts(self, obj):
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row_data = NovaDriver.convert_objs(obj, NovaDriver.hosts_translator)
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return row_data
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@ds_utils.update_state_on_changed(FLOATING_IPS)
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def _translate_floating_ips(self, obj):
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row_data = NovaDriver.convert_objs(obj,
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NovaDriver.floating_ips_translator)
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return row_data
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@ds_utils.update_state_on_changed(SERVICES)
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def _translate_services(self, obj):
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row_data = NovaDriver.convert_objs(obj, NovaDriver.services_translator)
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return row_data
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@ds_utils.update_state_on_changed(AVAILABILITY_ZONES)
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def _translate_availability_zones(self, obj):
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row_data = NovaDriver.convert_objs(
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obj,
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NovaDriver.availability_zones_translator)
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return row_data
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def execute(self, action, action_args):
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"""Overwrite ExecutionDriver.execute()."""
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# action can be written as a method or an API call.
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func = getattr(self, action, None)
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if func and self.is_executable(func):
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func(action_args)
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else:
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self._execute_api(self.nova_client, action, action_args)
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# "action" methods - to be used with "execute"
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def servers_set_meta(self, args):
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"""A wrapper for servers.set_meta().
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'execute[p(x)]' doesn't take optional args at the moment.
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Therefore, this function translates the positional ARGS
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to optional args and call the servers.set_meta() api.
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:param <list> args: expected server ID and pairs of meta
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data in positional args such as:
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{'positional': ['server_id', 'meta1', 'value1', 'meta2', 'value2']}
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Usage:
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execute[nova.servers_set_meta(svr_id, meta1, val1, meta2, val2) :-
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triggering_table(id)
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"""
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action = 'servers.set_meta'
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positional_args = args.get('positional', [])
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if not positional_args:
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LOG.error('Args not found for servers_set_meta()')
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return
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# Strip off the server_id before converting meta data pairs
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server_id = positional_args.pop(0)
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meta_data = self._convert_args(positional_args)
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action_args = {'named': {'server': server_id,
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'metadata': meta_data}}
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self._execute_api(self.nova_client, action, action_args)
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