apmec/apmec/db/meo/meca_db.py

452 lines
18 KiB
Python

# Licensed under the Apache License, Version 2.0 (the "License"); you may
# not use this file except in compliance with the License. You may obtain
# a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
# License for the specific language governing permissions and limitations
# under the License.
import ast
from datetime import datetime
from oslo_db.exception import DBDuplicateEntry
from oslo_log import log as logging
from oslo_utils import timeutils
from oslo_utils import uuidutils
from six import iteritems
import sqlalchemy as sa
from sqlalchemy import orm
from sqlalchemy.orm import exc as orm_exc
from sqlalchemy import schema
from apmec.common import exceptions
from apmec.db.common_services import common_services_db_plugin
from apmec.db import db_base
from apmec.db import model_base
from apmec.db import models_v1
from apmec.db import types
from apmec.extensions import meo
from apmec.plugins.common import constants
LOG = logging.getLogger(__name__)
_ACTIVE_UPDATE = (constants.ACTIVE, constants.PENDING_UPDATE)
_ACTIVE_UPDATE_ERROR_DEAD = (
constants.PENDING_CREATE, constants.ACTIVE, constants.PENDING_UPDATE,
constants.ERROR, constants.DEAD)
CREATE_STATES = (constants.PENDING_CREATE, constants.DEAD)
###########################################################################
# db tables
class MECAD(model_base.BASE, models_v1.HasId, models_v1.HasTenant,
models_v1.Audit):
"""Represents MECAD to create MECA."""
__tablename__ = 'mecad'
# Descriptive name
name = sa.Column(sa.String(255), nullable=False)
description = sa.Column(sa.Text)
meads = sa.Column(types.Json, nullable=True)
# Mecad template source - onboarded
template_source = sa.Column(sa.String(255), server_default='onboarded')
# (key, value) pair to spin up
attributes = orm.relationship('MECADAttribute',
backref='mecad')
__table_args__ = (
schema.UniqueConstraint(
"tenant_id",
"name",
name="uniq_mecad0tenant_id0name"),
)
class MECADAttribute(model_base.BASE, models_v1.HasId):
"""Represents attributes necessary for creation of meca in (key, value) pair
"""
__tablename__ = 'mecad_attribute'
mecad_id = sa.Column(types.Uuid, sa.ForeignKey('mecad.id'),
nullable=False)
key = sa.Column(sa.String(255), nullable=False)
value = sa.Column(sa.TEXT(65535), nullable=True)
class MECA(model_base.BASE, models_v1.HasId, models_v1.HasTenant,
models_v1.Audit):
"""Represents network services that deploys services.
"""
__tablename__ = 'meca'
mecad_id = sa.Column(types.Uuid, sa.ForeignKey('mecad.id'))
mecad = orm.relationship('MECAD')
name = sa.Column(sa.String(255), nullable=False)
description = sa.Column(sa.Text, nullable=True)
# Dict of MEA details that network service launches
mea_ids = sa.Column(sa.TEXT(65535), nullable=True)
# Dict of mgmt urls that network servic launches
mgmt_urls = sa.Column(sa.TEXT(65535), nullable=True)
status = sa.Column(sa.String(64), nullable=False)
vim_id = sa.Column(types.Uuid, sa.ForeignKey('vims.id'), nullable=False)
error_reason = sa.Column(sa.Text, nullable=True)
__table_args__ = (
schema.UniqueConstraint(
"tenant_id",
"name",
name="uniq_meca0tenant_id0name"),
)
class MECAPluginDb(meo.MECAPluginBase, db_base.CommonDbMixin):
def __init__(self):
super(MECAPluginDb, self).__init__()
self._cos_db_plg = common_services_db_plugin.CommonServicesPluginDb()
def _get_resource(self, context, model, id):
try:
return self._get_by_id(context, model, id)
except orm_exc.NoResultFound:
if issubclass(model, MECAD):
raise meo.MECADNotFound(mecad_id=id)
if issubclass(model, MECA):
raise meo.MECANotFound(meca_id=id)
else:
raise
def _get_meca_db(self, context, meca_id, current_statuses, new_status):
try:
meca_db = (
self._model_query(context, MECA).
filter(MECA.id == meca_id).
filter(MECA.status.in_(current_statuses)).
with_lockmode('update').one())
except orm_exc.NoResultFound:
raise meo.MECANotFound(meca_id=meca_id)
meca_db.update({'status': new_status})
return meca_db
def _make_attributes_dict(self, attributes_db):
return dict((attr.key, attr.value) for attr in attributes_db)
def _make_mecad_dict(self, mecad, fields=None):
res = {
'attributes': self._make_attributes_dict(mecad['attributes']),
}
key_list = ('id', 'tenant_id', 'name', 'description',
'created_at', 'updated_at', 'meads', 'template_source')
res.update((key, mecad[key]) for key in key_list)
return self._fields(res, fields)
def _make_dev_attrs_dict(self, dev_attrs_db):
return dict((arg.key, arg.value) for arg in dev_attrs_db)
def _make_meca_dict(self, meca_db, fields=None):
LOG.debug('meca_db %s', meca_db)
res = {}
key_list = ('id', 'tenant_id', 'mecad_id', 'name', 'description',
'mea_ids', 'status', 'mgmt_urls', 'error_reason',
'vim_id', 'created_at', 'updated_at')
res.update((key, meca_db[key]) for key in key_list)
return self._fields(res, fields)
def create_mecad(self, context, mecad):
meads = mecad['meads']
mecad = mecad['mecad']
LOG.debug('mecad %s', mecad)
tenant_id = self._get_tenant_id_for_create(context, mecad)
template_source = mecad.get('template_source')
try:
with context.session.begin(subtransactions=True):
mecad_id = uuidutils.generate_uuid()
mecad_db = MECAD(
id=mecad_id,
tenant_id=tenant_id,
name=mecad.get('name'),
meads=meads,
description=mecad.get('description'),
deleted_at=datetime.min,
template_source=template_source)
context.session.add(mecad_db)
for (key, value) in mecad.get('attributes', {}).items():
attribute_db = MECADAttribute(
id=uuidutils.generate_uuid(),
mecad_id=mecad_id,
key=key,
value=value)
context.session.add(attribute_db)
except DBDuplicateEntry as e:
raise exceptions.DuplicateEntity(
_type="mecad",
entry=e.columns)
LOG.debug('mecad_db %(mecad_db)s %(attributes)s ',
{'mecad_db': mecad_db,
'attributes': mecad_db.attributes})
mecad_dict = self._make_mecad_dict(mecad_db)
LOG.debug('mecad_dict %s', mecad_dict)
self._cos_db_plg.create_event(
context, res_id=mecad_dict['id'],
res_type=constants.RES_TYPE_MECAD,
res_state=constants.RES_EVT_ONBOARDED,
evt_type=constants.RES_EVT_CREATE,
tstamp=mecad_dict[constants.RES_EVT_CREATED_FLD])
return mecad_dict
def delete_mecad(self,
context,
mecad_id,
soft_delete=True):
with context.session.begin(subtransactions=True):
mecas_db = context.session.query(MECA).filter_by(
mecad_id=mecad_id).first()
if mecas_db is not None and mecas_db.deleted_at is None:
raise meo.MECADInUse(mecad_id=mecad_id)
mecad_db = self._get_resource(context, MECAD,
mecad_id)
if soft_delete:
mecad_db.update({'deleted_at': timeutils.utcnow()})
self._cos_db_plg.create_event(
context, res_id=mecad_db['id'],
res_type=constants.RES_TYPE_MECAD,
res_state=constants.RES_EVT_NA_STATE,
evt_type=constants.RES_EVT_DELETE,
tstamp=mecad_db[constants.RES_EVT_DELETED_FLD])
else:
context.session.query(MECADAttribute).filter_by(
mecad_id=mecad_id).delete()
context.session.delete(mecad_db)
def get_mecad(self, context, mecad_id, fields=None):
mecad_db = self._get_resource(context, MECAD, mecad_id)
return self._make_mecad_dict(mecad_db)
def get_mecads(self, context, filters, fields=None):
if ('template_source' in filters) and \
(filters['template_source'][0] == 'all'):
filters.pop('template_source')
return self._get_collection(context, MECAD,
self._make_mecad_dict,
filters=filters, fields=fields)
# reference implementation. needs to be overrided by subclass
def create_meca(self, context, meca):
LOG.debug('meca %s', meca)
meca = meca['meca']
tenant_id = self._get_tenant_id_for_create(context, meca)
mecad_id = meca['mecad_id']
vim_id = meca['vim_id']
name = meca.get('name')
meca_id = uuidutils.generate_uuid()
try:
with context.session.begin(subtransactions=True):
mecad_db = self._get_resource(context, MECAD,
mecad_id)
meca_db = MECA(id=meca_id,
tenant_id=tenant_id,
name=name,
description=mecad_db.description,
mea_ids=None,
status=constants.PENDING_CREATE,
mgmt_urls=None,
mecad_id=mecad_id,
vim_id=vim_id,
error_reason=None,
deleted_at=datetime.min)
context.session.add(meca_db)
except DBDuplicateEntry as e:
raise exceptions.DuplicateEntity(
_type="meca",
entry=e.columns)
evt_details = "MECA UUID assigned."
self._cos_db_plg.create_event(
context, res_id=meca_id,
res_type=constants.RES_TYPE_meca,
res_state=constants.PENDING_CREATE,
evt_type=constants.RES_EVT_CREATE,
tstamp=meca_db[constants.RES_EVT_CREATED_FLD],
details=evt_details)
return self._make_meca_dict(meca_db)
def create_meca_post(self, context, meca_id, mistral_obj,
mead_dict, error_reason):
LOG.debug('meca ID %s', meca_id)
output = ast.literal_eval(mistral_obj.output)
mgmt_urls = dict()
mea_ids = dict()
if len(output) > 0:
for mead_name, mead_val in iteritems(mead_dict):
for instance in mead_val['instances']:
if 'mgmt_url_' + instance in output:
mgmt_url_dict =\
ast.literal_eval(
output['mgmt_url_' + instance].strip())
mgmt_urls[instance] = mgmt_url_dict.values()
mea_ids[instance] = list()
mea_ids[instance].append(output['mea_id_' + instance])
mea_ids = str(mea_ids)
mgmt_urls = str(mgmt_urls)
if not mea_ids:
mea_ids = None
if not mgmt_urls:
mgmt_urls = None
status = constants.ACTIVE if mistral_obj.state == 'SUCCESS' \
else constants.ERROR
with context.session.begin(subtransactions=True):
meca_db = self._get_resource(context, MECA,
meca_id)
meca_db.update({'mea_ids': mea_ids})
meca_db.update({'mgmt_urls': mgmt_urls})
meca_db.update({'status': status})
meca_db.update({'error_reason': error_reason})
meca_db.update({'updated_at': timeutils.utcnow()})
meca_dict = self._make_meca_dict(meca_db)
self._cos_db_plg.create_event(
context, res_id=meca_dict['id'],
res_type=constants.RES_TYPE_meca,
res_state=constants.RES_EVT_NA_STATE,
evt_type=constants.RES_EVT_UPDATE,
tstamp=meca_dict[constants.RES_EVT_UPDATED_FLD])
return meca_dict
# reference implementation. needs to be overrided by subclass
def delete_meca(self, context, meca_id):
with context.session.begin(subtransactions=True):
meca_db = self._get_meca_db(
context, meca_id, _ACTIVE_UPDATE_ERROR_DEAD,
constants.PENDING_DELETE)
deleted_meca_db = self._make_meca_dict(meca_db)
self._cos_db_plg.create_event(
context, res_id=meca_id,
res_type=constants.RES_TYPE_meca,
res_state=deleted_meca_db['status'],
evt_type=constants.RES_EVT_DELETE,
tstamp=timeutils.utcnow(), details="MECA delete initiated")
return deleted_meca_db
def delete_meca_post(self, context, meca_id, mistral_obj,
error_reason, soft_delete=True):
meca = self.get_meca(context, meca_id)
mecad_id = meca.get('mecad_id')
with context.session.begin(subtransactions=True):
query = (
self._model_query(context, MECA).
filter(MECA.id == meca_id).
filter(MECA.status == constants.PENDING_DELETE))
if mistral_obj and mistral_obj.state == 'ERROR':
query.update({'status': constants.ERROR})
self._cos_db_plg.create_event(
context, res_id=meca_id,
res_type=constants.RES_TYPE_meca,
res_state=constants.ERROR,
evt_type=constants.RES_EVT_DELETE,
tstamp=timeutils.utcnow(),
details="MECA Delete ERROR")
else:
if soft_delete:
deleted_time_stamp = timeutils.utcnow()
query.update({'deleted_at': deleted_time_stamp})
self._cos_db_plg.create_event(
context, res_id=meca_id,
res_type=constants.RES_TYPE_meca,
res_state=constants.PENDING_DELETE,
evt_type=constants.RES_EVT_DELETE,
tstamp=deleted_time_stamp,
details="meca Delete Complete")
else:
query.delete()
template_db = self._get_resource(context, MECAD, mecad_id)
if template_db.get('template_source') == 'inline':
self.delete_mecad(context, mecad_id)
def get_meca(self, context, meca_id, fields=None):
meca_db = self._get_resource(context, MECA, meca_id)
return self._make_meca_dict(meca_db)
def get_mecas(self, context, filters=None, fields=None):
return self._get_collection(context, MECA,
self._make_meca_dict,
filters=filters, fields=fields)
def _update_meca_pre(self, context, meca_id):
with context.session.begin(subtransactions=True):
meca_db = self._get_meca_db(
context, meca_id, _ACTIVE_UPDATE,
constants.PENDING_UPDATE)
return self._make_meca_dict(meca_db)
def _update_meca_post(self, context, meca_id, mistral_obj,
mead_dict, error_reason):
output = ast.literal_eval(mistral_obj.output)
new_mgmt_urls = dict()
new_mea_ids = dict()
if len(output) > 0:
for mead_name, mead_val in iteritems(mead_dict):
for instance in mead_val['instances']:
if 'mgmt_url_' + instance in output:
mgmt_url_dict = ast.literal_eval(
output['mgmt_url_' + instance].strip())
new_mgmt_urls[instance] = mgmt_url_dict.values()
new_mea_ids[instance] = output['mea_id_' + instance]
if not new_mea_ids:
new_mea_ids = None
if not new_mgmt_urls:
new_mgmt_urls = None
status = constants.ACTIVE if mistral_obj.state == 'SUCCESS' \
else constants.ERROR
with context.session.begin(subtransactions=True):
meca_db = self._get_resource(context, MECA, meca_id)
mgmt_urls = ast.literal_eval(meca_db.mgmt_urls)
for mea_name, mgmt_dict in mgmt_urls.items():
for new_mea_name, new_mgmt_dict in new_mgmt_urls.items():
if new_mea_name == mea_name:
extra_mgmt = new_mgmt_urls.pop(new_mea_name)
mgmt_urls[mea_name].extend(extra_mgmt)
mgmt_urls.update(new_mgmt_urls)
mgmt_urls = str(mgmt_urls)
mea_ids = ast.literal_eval(meca_db.mea_ids)
for mea_name, mea_id_list in mea_ids.items():
for new_mea_name, new_mead_id_list in new_mea_ids.items():
if new_mea_name == mea_name:
extra_id = new_mea_ids.pop(new_mea_name)
mea_ids[mea_name].append(extra_id)
mea_ids.update(new_mea_ids)
mea_ids = str(mea_ids)
meca_db.update({'mea_ids': mea_ids})
meca_db.update({'mgmt_urls': mgmt_urls})
meca_db.update({'status': status})
meca_db.update({'error_reason': error_reason})
meca_db.update({'updated_at': timeutils.utcnow()})
meca_dict = self._make_meca_dict(meca_db)
return meca_dict
def _update_meca_status(self, context, meca_id, new_status):
with context.session.begin(subtransactions=True):
meca_db = self._get_meca_db(
context, meca_id, _ACTIVE_UPDATE, new_status)
return self._make_meca_dict(meca_db)
def update_meca(self, context, meca_id, meca):
meca_dict = self._update_meca_pre(context, meca_id)
self._update_meca_post(context, meca_id,
constants.ACTIVE, meca_dict, None)