/usr/lib/python2.7/dist-packages/magnum/db/sqlalchemy/api.py is in python-magnum 3.1.1-5.
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#
# 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.
"""SQLAlchemy storage backend."""
from oslo_config import cfg
from oslo_db import exception as db_exc
from oslo_db.sqlalchemy import session as db_session
from oslo_db.sqlalchemy import utils as db_utils
from oslo_utils import strutils
from oslo_utils import timeutils
from oslo_utils import uuidutils
from sqlalchemy.orm.exc import MultipleResultsFound
from sqlalchemy.orm.exc import NoResultFound
from magnum.common import clients
from magnum.common import context as request_context
from magnum.common import exception
from magnum.db import api
from magnum.db.sqlalchemy import models
from magnum.i18n import _
CONF = cfg.CONF
_FACADE = None
def _create_facade_lazily():
global _FACADE
if _FACADE is None:
_FACADE = db_session.EngineFacade.from_config(CONF)
return _FACADE
def get_engine():
facade = _create_facade_lazily()
return facade.get_engine()
def get_session(**kwargs):
facade = _create_facade_lazily()
return facade.get_session(**kwargs)
def get_backend():
"""The backend is this module itself."""
return Connection()
def model_query(model, *args, **kwargs):
"""Query helper for simpler session usage.
:param session: if present, the session to use
"""
session = kwargs.get('session') or get_session()
query = session.query(model, *args)
return query
def add_identity_filter(query, value):
"""Adds an identity filter to a query.
Filters results by ID, if supplied value is a valid integer.
Otherwise attempts to filter results by UUID.
:param query: Initial query to add filter to.
:param value: Value for filtering results by.
:return: Modified query.
"""
if strutils.is_int_like(value):
return query.filter_by(id=value)
elif uuidutils.is_uuid_like(value):
return query.filter_by(uuid=value)
else:
raise exception.InvalidIdentity(identity=value)
def _paginate_query(model, limit=None, marker=None, sort_key=None,
sort_dir=None, query=None):
if not query:
query = model_query(model)
sort_keys = ['id']
if sort_key and sort_key not in sort_keys:
sort_keys.insert(0, sort_key)
try:
query = db_utils.paginate_query(query, model, limit, sort_keys,
marker=marker, sort_dir=sort_dir)
except db_exc.InvalidSortKey:
raise exception.InvalidParameterValue(
_('The sort_key value "%(key)s" is an invalid field for sorting')
% {'key': sort_key})
return query.all()
class Connection(api.Connection):
"""SqlAlchemy connection."""
def __init__(self):
pass
def _add_tenant_filters(self, context, query):
if context.is_admin and context.all_tenants:
return query
admin_context = request_context.make_admin_context(all_tenants=True)
osc = clients.OpenStackClients(admin_context)
kst = osc.keystone()
# User in a regular project (not in the trustee domain)
if context.project_id and context.domain_id != kst.trustee_domain_id:
query = query.filter_by(project_id=context.project_id)
# Match project ID component in trustee user's user name against
# cluster's project_id to associate per-cluster trustee users who have
# no project information with the project their clusters/cluster models
# reside in. This is equivalent to the project filtering above.
elif context.domain_id == kst.trustee_domain_id:
user_name = kst.client.users.get(context.user_id).name
user_project = user_name.split('_', 2)[1]
query = query.filter_by(project_id=user_project)
else:
query = query.filter_by(user_id=context.user_id)
return query
def _add_clusters_filters(self, query, filters):
if filters is None:
filters = {}
possible_filters = ["cluster_template_id", "name", "node_count",
"master_count", "stack_id", "api_address",
"node_addresses", "project_id", "user_id"]
filter_names = set(filters).intersection(possible_filters)
filter_dict = {filter_name: filters[filter_name]
for filter_name in filter_names}
query = query.filter_by(**filter_dict)
if 'status' in filters:
query = query.filter(models.Cluster.status.in_(filters['status']))
return query
def get_cluster_list(self, context, filters=None, limit=None, marker=None,
sort_key=None, sort_dir=None):
query = model_query(models.Cluster)
query = self._add_tenant_filters(context, query)
query = self._add_clusters_filters(query, filters)
return _paginate_query(models.Cluster, limit, marker,
sort_key, sort_dir, query)
def create_cluster(self, values):
# ensure defaults are present for new clusters
if not values.get('uuid'):
values['uuid'] = uuidutils.generate_uuid()
cluster = models.Cluster()
cluster.update(values)
try:
cluster.save()
except db_exc.DBDuplicateEntry:
raise exception.ClusterAlreadyExists(uuid=values['uuid'])
return cluster
def get_cluster_by_id(self, context, cluster_id):
query = model_query(models.Cluster)
query = self._add_tenant_filters(context, query)
query = query.filter_by(id=cluster_id)
try:
return query.one()
except NoResultFound:
raise exception.ClusterNotFound(cluster=cluster_id)
def get_cluster_by_name(self, context, cluster_name):
query = model_query(models.Cluster)
query = self._add_tenant_filters(context, query)
query = query.filter_by(name=cluster_name)
try:
return query.one()
except MultipleResultsFound:
raise exception.Conflict('Multiple clusters exist with same name.'
' Please use the cluster uuid instead.')
except NoResultFound:
raise exception.ClusterNotFound(cluster=cluster_name)
def get_cluster_by_uuid(self, context, cluster_uuid):
query = model_query(models.Cluster)
query = self._add_tenant_filters(context, query)
query = query.filter_by(uuid=cluster_uuid)
try:
return query.one()
except NoResultFound:
raise exception.ClusterNotFound(cluster=cluster_uuid)
def destroy_cluster(self, cluster_id):
session = get_session()
with session.begin():
query = model_query(models.Cluster, session=session)
query = add_identity_filter(query, cluster_id)
try:
query.one()
except NoResultFound:
raise exception.ClusterNotFound(cluster=cluster_id)
query.delete()
def update_cluster(self, cluster_id, values):
# NOTE(dtantsur): this can lead to very strange errors
if 'uuid' in values:
msg = _("Cannot overwrite UUID for an existing Cluster.")
raise exception.InvalidParameterValue(err=msg)
return self._do_update_cluster(cluster_id, values)
def _do_update_cluster(self, cluster_id, values):
session = get_session()
with session.begin():
query = model_query(models.Cluster, session=session)
query = add_identity_filter(query, cluster_id)
try:
ref = query.with_lockmode('update').one()
except NoResultFound:
raise exception.ClusterNotFound(cluster=cluster_id)
if 'provision_state' in values:
values['provision_updated_at'] = timeutils.utcnow()
ref.update(values)
return ref
def _add_cluster_template_filters(self, query, filters):
if filters is None:
filters = {}
possible_filters = ["name", "image_id", "flavor_id",
"master_flavor_id", "keypair_id",
"external_network_id", "dns_nameserver",
"project_id", "user_id", "labels"]
filter_names = set(filters).intersection(possible_filters)
filter_dict = {filter_name: filters[filter_name]
for filter_name in filter_names}
return query.filter_by(**filter_dict)
def get_cluster_template_list(self, context, filters=None, limit=None,
marker=None, sort_key=None, sort_dir=None):
query = model_query(models.ClusterTemplate)
query = self._add_tenant_filters(context, query)
query = self._add_cluster_template_filters(query, filters)
# include public ClusterTemplates
public_q = model_query(models.ClusterTemplate).filter_by(public=True)
query = query.union(public_q)
return _paginate_query(models.ClusterTemplate, limit, marker,
sort_key, sort_dir, query)
def create_cluster_template(self, values):
# ensure defaults are present for new ClusterTemplates
if not values.get('uuid'):
values['uuid'] = uuidutils.generate_uuid()
cluster_template = models.ClusterTemplate()
cluster_template.update(values)
try:
cluster_template.save()
except db_exc.DBDuplicateEntry:
raise exception.ClusterTemplateAlreadyExists(uuid=values['uuid'])
return cluster_template
def get_cluster_template_by_id(self, context, cluster_template_id):
query = model_query(models.ClusterTemplate)
query = self._add_tenant_filters(context, query)
public_q = model_query(models.ClusterTemplate).filter_by(public=True)
query = query.union(public_q)
query = query.filter_by(id=cluster_template_id)
try:
return query.one()
except NoResultFound:
raise exception.ClusterTemplateNotFound(
clustertemplate=cluster_template_id)
def get_cluster_template_by_uuid(self, context, cluster_template_uuid):
query = model_query(models.ClusterTemplate)
query = self._add_tenant_filters(context, query)
public_q = model_query(models.ClusterTemplate).filter_by(public=True)
query = query.union(public_q)
query = query.filter_by(uuid=cluster_template_uuid)
try:
return query.one()
except NoResultFound:
raise exception.ClusterTemplateNotFound(
clustertemplate=cluster_template_uuid)
def get_cluster_template_by_name(self, context, cluster_template_name):
query = model_query(models.ClusterTemplate)
query = self._add_tenant_filters(context, query)
public_q = model_query(models.ClusterTemplate).filter_by(public=True)
query = query.union(public_q)
query = query.filter_by(name=cluster_template_name)
try:
return query.one()
except MultipleResultsFound:
raise exception.Conflict('Multiple ClusterTemplates exist with'
' same name. Please use the '
'ClusterTemplate uuid instead.')
except NoResultFound:
raise exception.ClusterTemplateNotFound(
clustertemplate=cluster_template_name)
def _is_cluster_template_referenced(self, session, cluster_template_uuid):
"""Checks whether the ClusterTemplate is referenced by cluster(s)."""
query = model_query(models.Cluster, session=session)
query = self._add_clusters_filters(query, {'cluster_template_id':
cluster_template_uuid})
return query.count() != 0
def _is_publishing_cluster_template(self, values):
if (len(values) == 1 and
'public' in values and values['public'] is True):
return True
return False
def destroy_cluster_template(self, cluster_template_id):
session = get_session()
with session.begin():
query = model_query(models.ClusterTemplate, session=session)
query = add_identity_filter(query, cluster_template_id)
try:
cluster_template_ref = query.one()
except NoResultFound:
raise exception.ClusterTemplateNotFound(
clustertemplate=cluster_template_id)
if self._is_cluster_template_referenced(
session, cluster_template_ref['uuid']):
raise exception.ClusterTemplateReferenced(
clustertemplate=cluster_template_id)
query.delete()
def update_cluster_template(self, cluster_template_id, values):
# NOTE(dtantsur): this can lead to very strange errors
if 'uuid' in values:
msg = _("Cannot overwrite UUID for an existing ClusterTemplate.")
raise exception.InvalidParameterValue(err=msg)
return self._do_update_cluster_template(cluster_template_id, values)
def _do_update_cluster_template(self, cluster_template_id, values):
session = get_session()
with session.begin():
query = model_query(models.ClusterTemplate, session=session)
query = add_identity_filter(query, cluster_template_id)
try:
ref = query.with_lockmode('update').one()
except NoResultFound:
raise exception.ClusterTemplateNotFound(
clustertemplate=cluster_template_id)
if self._is_cluster_template_referenced(session, ref['uuid']):
# we only allow to update ClusterTemplate to be public
if not self._is_publishing_cluster_template(values):
raise exception.ClusterTemplateReferenced(
clustertemplate=cluster_template_id)
ref.update(values)
return ref
def create_x509keypair(self, values):
# ensure defaults are present for new x509keypairs
if not values.get('uuid'):
values['uuid'] = uuidutils.generate_uuid()
x509keypair = models.X509KeyPair()
x509keypair.update(values)
try:
x509keypair.save()
except db_exc.DBDuplicateEntry:
raise exception.X509KeyPairAlreadyExists(uuid=values['uuid'])
return x509keypair
def get_x509keypair_by_id(self, context, x509keypair_id):
query = model_query(models.X509KeyPair)
query = self._add_tenant_filters(context, query)
query = query.filter_by(id=x509keypair_id)
try:
return query.one()
except NoResultFound:
raise exception.X509KeyPairNotFound(x509keypair=x509keypair_id)
def get_x509keypair_by_uuid(self, context, x509keypair_uuid):
query = model_query(models.X509KeyPair)
query = self._add_tenant_filters(context, query)
query = query.filter_by(uuid=x509keypair_uuid)
try:
return query.one()
except NoResultFound:
raise exception.X509KeyPairNotFound(x509keypair=x509keypair_uuid)
def destroy_x509keypair(self, x509keypair_id):
session = get_session()
with session.begin():
query = model_query(models.X509KeyPair, session=session)
query = add_identity_filter(query, x509keypair_id)
count = query.delete()
if count != 1:
raise exception.X509KeyPairNotFound(x509keypair_id)
def update_x509keypair(self, x509keypair_id, values):
# NOTE(dtantsur): this can lead to very strange errors
if 'uuid' in values:
msg = _("Cannot overwrite UUID for an existing X509KeyPair.")
raise exception.InvalidParameterValue(err=msg)
return self._do_update_x509keypair(x509keypair_id, values)
def _do_update_x509keypair(self, x509keypair_id, values):
session = get_session()
with session.begin():
query = model_query(models.X509KeyPair, session=session)
query = add_identity_filter(query, x509keypair_id)
try:
ref = query.with_lockmode('update').one()
except NoResultFound:
raise exception.X509KeyPairNotFound(x509keypair=x509keypair_id)
if 'provision_state' in values:
values['provision_updated_at'] = timeutils.utcnow()
ref.update(values)
return ref
def _add_x509keypairs_filters(self, query, filters):
if filters is None:
filters = {}
if 'project_id' in filters:
query = query.filter_by(project_id=filters['project_id'])
if 'user_id' in filters:
query = query.filter_by(user_id=filters['user_id'])
return query
def get_x509keypair_list(self, context, filters=None, limit=None,
marker=None, sort_key=None, sort_dir=None):
query = model_query(models.X509KeyPair)
query = self._add_tenant_filters(context, query)
query = self._add_x509keypairs_filters(query, filters)
return _paginate_query(models.X509KeyPair, limit, marker,
sort_key, sort_dir, query)
def destroy_magnum_service(self, magnum_service_id):
session = get_session()
with session.begin():
query = model_query(models.MagnumService, session=session)
query = add_identity_filter(query, magnum_service_id)
count = query.delete()
if count != 1:
raise exception.MagnumServiceNotFound(
magnum_service_id=magnum_service_id)
def update_magnum_service(self, magnum_service_id, values):
session = get_session()
with session.begin():
query = model_query(models.MagnumService, session=session)
query = add_identity_filter(query, magnum_service_id)
try:
ref = query.with_lockmode('update').one()
except NoResultFound:
raise exception.MagnumServiceNotFound(
magnum_service_id=magnum_service_id)
if 'report_count' in values:
if values['report_count'] > ref.report_count:
ref.last_seen_up = timeutils.utcnow()
ref.update(values)
return ref
def get_magnum_service_by_host_and_binary(self, context, host, binary):
query = model_query(models.MagnumService)
query = query.filter_by(host=host, binary=binary)
try:
return query.one()
except NoResultFound:
return None
def create_magnum_service(self, values):
magnum_service = models.MagnumService()
magnum_service.update(values)
try:
magnum_service.save()
except db_exc.DBDuplicateEntry:
raise exception.MagnumServiceAlreadyExists(id=magnum_service['id'])
return magnum_service
def get_magnum_service_list(self, context, disabled=None, limit=None,
marker=None, sort_key=None, sort_dir=None
):
query = model_query(models.MagnumService)
if disabled:
query = query.filter_by(disabled=disabled)
return _paginate_query(models.MagnumService, limit, marker,
sort_key, sort_dir, query)
def create_quota(self, values):
quotas = models.Quota()
quotas.update(values)
try:
quotas.save()
except db_exc.DBDuplicateEntry:
raise exception.QuotaAlreadyExists(project_id=values['project_id'],
resource=values['resource'])
return quotas
def quota_get_all_by_project_id(self, project_id):
query = model_query(models.Quota)
result = query.filter_by(project_id=project_id).all()
return result
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