342 lines
13 KiB
Python
342 lines
13 KiB
Python
# 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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import ast
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import uuid
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from oslo_log import log as logging
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from oslo_utils import timeutils
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from six import iteritems
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import sqlalchemy as sa
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from sqlalchemy import orm
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from sqlalchemy.orm import exc as orm_exc
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from tacker.db.common_services import common_services_db
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from tacker.db import db_base
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from tacker.db import model_base
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from tacker.db import models_v1
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from tacker.db import types
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from tacker.extensions import nfvo
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from tacker.extensions.nfvo_plugins import network_service
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from tacker.plugins.common import constants
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LOG = logging.getLogger(__name__)
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_ACTIVE_UPDATE = (constants.ACTIVE, constants.PENDING_UPDATE)
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_ACTIVE_UPDATE_ERROR_DEAD = (
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constants.PENDING_CREATE, constants.ACTIVE, constants.PENDING_UPDATE,
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constants.ERROR, constants.DEAD)
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CREATE_STATES = (constants.PENDING_CREATE, constants.DEAD)
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###########################################################################
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# db tables
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class NSD(model_base.BASE, models_v1.HasId, models_v1.HasTenant,
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models_v1.Audit):
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"""Represents NSD to create NS."""
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__tablename__ = 'nsd'
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# Descriptive name
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name = sa.Column(sa.String(255), nullable=False)
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description = sa.Column(sa.Text)
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vnfds = sa.Column(types.Json, nullable=True)
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# (key, value) pair to spin up
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attributes = orm.relationship('NSDAttribute',
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backref='nsd')
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class NSDAttribute(model_base.BASE, models_v1.HasId):
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"""Represents attributes necessary for creation of ns in (key, value) pair
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"""
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__tablename__ = 'nsd_attribute'
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nsd_id = sa.Column(types.Uuid, sa.ForeignKey('nsd.id'),
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nullable=False)
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key = sa.Column(sa.String(255), nullable=False)
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value = sa.Column(sa.TEXT(65535), nullable=True)
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class NS(model_base.BASE, models_v1.HasId, models_v1.HasTenant,
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models_v1.Audit):
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"""Represents network services that deploys services.
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"""
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__tablename__ = 'ns'
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nsd_id = sa.Column(types.Uuid, sa.ForeignKey('nsd.id'))
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nsd = orm.relationship('NSD')
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name = sa.Column(sa.String(255), nullable=False)
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description = sa.Column(sa.Text, nullable=True)
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# Dict of VNF details that network service launches
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vnf_ids = sa.Column(sa.TEXT(65535), nullable=True)
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# Dict of mgmt urls that network servic launches
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mgmt_urls = sa.Column(sa.TEXT(65535), nullable=True)
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status = sa.Column(sa.String(64), nullable=False)
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vim_id = sa.Column(types.Uuid, sa.ForeignKey('vims.id'), nullable=False)
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error_reason = sa.Column(sa.Text, nullable=True)
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class NSPluginDb(network_service.NSPluginBase, db_base.CommonDbMixin):
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def __init__(self):
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super(NSPluginDb, self).__init__()
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self._cos_db_plg = common_services_db.CommonServicesPluginDb()
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def _get_resource(self, context, model, id):
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try:
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return self._get_by_id(context, model, id)
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except orm_exc.NoResultFound:
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if issubclass(model, NSD):
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raise network_service.NSDNotFound(nsd_id=id)
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if issubclass(model, NS):
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raise network_service.NSNotFound(ns_id=id)
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else:
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raise
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def _get_ns_db(self, context, ns_id, current_statuses, new_status):
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try:
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ns_db = (
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self._model_query(context, NS).
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filter(NS.id == ns_id).
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filter(NS.status.in_(current_statuses)).
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with_lockmode('update').one())
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except orm_exc.NoResultFound:
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raise network_service.NSNotFound(ns_id=ns_id)
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ns_db.update({'status': new_status})
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return ns_db
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def _make_attributes_dict(self, attributes_db):
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return dict((attr.key, attr.value) for attr in attributes_db)
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def _make_nsd_dict(self, nsd, fields=None):
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res = {
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'attributes': self._make_attributes_dict(nsd['attributes']),
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}
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key_list = ('id', 'tenant_id', 'name', 'description',
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'created_at', 'updated_at', 'vnfds')
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res.update((key, nsd[key]) for key in key_list)
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return self._fields(res, fields)
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def _make_dev_attrs_dict(self, dev_attrs_db):
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return dict((arg.key, arg.value) for arg in dev_attrs_db)
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def _make_ns_dict(self, ns_db, fields=None):
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LOG.debug(_('ns_db %s'), ns_db)
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res = {}
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key_list = ('id', 'tenant_id', 'nsd_id', 'name', 'description',
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'vnf_ids', 'status', 'mgmt_urls', 'error_reason',
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'vim_id', 'created_at', 'updated_at')
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res.update((key, ns_db[key]) for key in key_list)
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return self._fields(res, fields)
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def create_nsd(self, context, nsd):
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vnfds = nsd['vnfds']
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nsd = nsd['nsd']
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LOG.debug(_('nsd %s'), nsd)
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tenant_id = self._get_tenant_id_for_create(context, nsd)
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with context.session.begin(subtransactions=True):
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nsd_id = str(uuid.uuid4())
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nsd_db = NSD(
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id=nsd_id,
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tenant_id=tenant_id,
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name=nsd.get('name'),
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vnfds=vnfds,
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description=nsd.get('description'))
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context.session.add(nsd_db)
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for (key, value) in nsd.get('attributes', {}).items():
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attribute_db = NSDAttribute(
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id=str(uuid.uuid4()),
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nsd_id=nsd_id,
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key=key,
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value=value)
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context.session.add(attribute_db)
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LOG.debug(_('nsd_db %(nsd_db)s %(attributes)s '),
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{'nsd_db': nsd_db,
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'attributes': nsd_db.attributes})
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nsd_dict = self._make_nsd_dict(nsd_db)
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LOG.debug(_('nsd_dict %s'), nsd_dict)
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self._cos_db_plg.create_event(
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context, res_id=nsd_dict['id'],
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res_type=constants.RES_TYPE_NSD,
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res_state=constants.RES_EVT_ONBOARDED,
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evt_type=constants.RES_EVT_CREATE,
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tstamp=nsd_dict[constants.RES_EVT_CREATED_FLD])
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return nsd_dict
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def delete_nsd(self,
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context,
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nsd_id,
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soft_delete=True):
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with context.session.begin(subtransactions=True):
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nss_db = context.session.query(NS).filter_by(
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nsd_id=nsd_id).first()
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if nss_db is not None and nss_db.deleted_at is None:
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raise nfvo.NSDInUse(nsd_id=nsd_id)
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nsd_db = self._get_resource(context, NSD,
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nsd_id)
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if soft_delete:
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nsd_db.update({'deleted_at': timeutils.utcnow()})
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self._cos_db_plg.create_event(
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context, res_id=nsd_db['id'],
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res_type=constants.RES_TYPE_NSD,
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res_state=constants.RES_EVT_NA_STATE,
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evt_type=constants.RES_EVT_DELETE,
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tstamp=nsd_db[constants.RES_EVT_DELETED_FLD])
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else:
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context.session.query(NSDAttribute).filter_by(
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nsd_id=nsd_id).delete()
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context.session.delete(nsd_db)
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def get_nsd(self, context, nsd_id, fields=None):
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nsd_db = self._get_resource(context, NSD, nsd_id)
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return self._make_nsd_dict(nsd_db)
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def get_nsds(self, context, filters, fields=None):
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return self._get_collection(context, NSD,
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self._make_nsd_dict,
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filters=filters, fields=fields)
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# reference implementation. needs to be overrided by subclass
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def create_ns(self, context, ns):
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LOG.debug(_('ns %s'), ns)
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ns = ns['ns']
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tenant_id = self._get_tenant_id_for_create(context, ns)
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nsd_id = ns['nsd_id']
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vim_id = ns['vim_id']
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name = ns.get('name')
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ns_id = str(uuid.uuid4())
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with context.session.begin(subtransactions=True):
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nsd_db = self._get_resource(context, NSD,
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nsd_id)
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ns_db = NS(id=ns_id,
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tenant_id=tenant_id,
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name=name,
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description=nsd_db.description,
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vnf_ids=None,
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status=constants.PENDING_CREATE,
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mgmt_urls=None,
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nsd_id=nsd_id,
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vim_id=vim_id,
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error_reason=None)
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context.session.add(ns_db)
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evt_details = "NS UUID assigned."
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self._cos_db_plg.create_event(
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context, res_id=ns_id,
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res_type=constants.RES_TYPE_NS,
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res_state=constants.PENDING_CREATE,
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evt_type=constants.RES_EVT_CREATE,
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tstamp=ns_db[constants.RES_EVT_CREATED_FLD],
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details=evt_details)
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return self._make_ns_dict(ns_db)
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def create_ns_post(self, context, ns_id, mistral_obj,
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vnfd_dict, error_reason):
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LOG.debug(_('ns ID %s'), ns_id)
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output = ast.literal_eval(mistral_obj.output)
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mgmt_urls = dict()
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vnf_ids = dict()
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if len(output) > 0:
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for vnfd_name, vnfd_val in iteritems(vnfd_dict):
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for instance in vnfd_val['instances']:
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mgmt_urls[instance] = ast.literal_eval(
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output['mgmt_url_' + instance].strip())
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vnf_ids[instance] = output['vnf_id_' + instance]
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vnf_ids = str(vnf_ids)
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mgmt_urls = str(mgmt_urls)
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if not vnf_ids:
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vnf_ids = None
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if not mgmt_urls:
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mgmt_urls = None
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status = constants.ACTIVE if mistral_obj.state == 'SUCCESS' \
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else constants.ERROR
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with context.session.begin(subtransactions=True):
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ns_db = self._get_resource(context, NS,
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ns_id)
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ns_db.update({'vnf_ids': vnf_ids})
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ns_db.update({'mgmt_urls': mgmt_urls})
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ns_db.update({'status': status})
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ns_db.update({'error_reason': error_reason})
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ns_db.update({'updated_at': timeutils.utcnow()})
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ns_dict = self._make_ns_dict(ns_db)
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self._cos_db_plg.create_event(
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context, res_id=ns_dict['id'],
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res_type=constants.RES_TYPE_NS,
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res_state=constants.RES_EVT_NA_STATE,
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evt_type=constants.RES_EVT_UPDATE,
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tstamp=ns_dict[constants.RES_EVT_UPDATED_FLD])
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return ns_dict
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# reference implementation. needs to be overrided by subclass
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def delete_ns(self, context, ns_id):
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with context.session.begin(subtransactions=True):
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ns_db = self._get_ns_db(
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context, ns_id, _ACTIVE_UPDATE_ERROR_DEAD,
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constants.PENDING_DELETE)
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deleted_ns_db = self._make_ns_dict(ns_db)
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self._cos_db_plg.create_event(
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context, res_id=ns_id,
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res_type=constants.RES_TYPE_NS,
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res_state=deleted_ns_db['status'],
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evt_type=constants.RES_EVT_DELETE,
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tstamp=timeutils.utcnow(), details="NS delete initiated")
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return deleted_ns_db
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def delete_ns_post(self, context, ns_id, mistral_obj,
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error_reason, soft_delete=True):
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with context.session.begin(subtransactions=True):
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query = (
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self._model_query(context, NS).
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filter(NS.id == ns_id).
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filter(NS.status == constants.PENDING_DELETE))
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if mistral_obj.state == 'ERROR':
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query.update({'status': constants.ERROR})
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self._cos_db_plg.create_event(
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context, res_id=ns_id,
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res_type=constants.RES_TYPE_NS,
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res_state=constants.ERROR,
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evt_type=constants.RES_EVT_DELETE,
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tstamp=timeutils.utcnow(),
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details="NS Delete ERROR")
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else:
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if soft_delete:
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deleted_time_stamp = timeutils.utcnow()
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query.update({'deleted_at': deleted_time_stamp})
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self._cos_db_plg.create_event(
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context, res_id=ns_id,
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res_type=constants.RES_TYPE_NS,
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res_state=constants.PENDING_DELETE,
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evt_type=constants.RES_EVT_DELETE,
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tstamp=deleted_time_stamp,
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details="ns Delete Complete")
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else:
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query.delete()
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def get_ns(self, context, ns_id, fields=None):
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ns_db = self._get_resource(context, NS, ns_id)
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return self._make_ns_dict(ns_db)
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def get_nss(self, context, filters=None, fields=None):
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return self._get_collection(context, NS,
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self._make_ns_dict,
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filters=filters, fields=fields)
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