vmware-nsx/quantum/db/loadbalancer/loadbalancer_db.py
Mark McClain 8acc578147 create a Quantum port to reserve VIP address
fixes bug 1129672

The API previously allowed a VIP to be created without verifying that
the tenant had access to the subnet and that the address was valid and
available.  This change modifies VIP creation behavior to create a
Quantum port with the requested address.  If an address is not provided, an
address is allocated using the normal allocation process for the subnet.

This change also renames the port attribute to protocol_port to remove the
ambiguity about which type of port it represents.

Additional tests were added to validate the change in behavior.

Change-Id: Ib19ef653887da568364b4faa0d2c0fac30970b5f
2013-02-27 15:03:02 -08:00

733 lines
30 KiB
Python

# vim: tabstop=4 shiftwidth=4 softtabstop=4
#
# Copyright 2013 OpenStack LLC. All rights reserved
#
# 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.
#
from oslo.config import cfg
import sqlalchemy as sa
from sqlalchemy import orm
from sqlalchemy.orm import exc
from sqlalchemy.sql import expression as expr
import webob.exc as w_exc
from quantum.api.v2 import attributes
from quantum.common import exceptions as q_exc
from quantum.db import db_base_plugin_v2
from quantum.db import model_base
from quantum.db import models_v2
from quantum.extensions import loadbalancer
from quantum.extensions.loadbalancer import LoadBalancerPluginBase
from quantum import manager
from quantum.openstack.common import log as logging
from quantum.openstack.common import uuidutils
from quantum.plugins.common import constants
from quantum import policy
LOG = logging.getLogger(__name__)
class SessionPersistence(model_base.BASEV2):
vip_id = sa.Column(sa.String(36),
sa.ForeignKey("vips.id"),
primary_key=True)
type = sa.Column(sa.Enum("SOURCE_IP",
"HTTP_COOKIE",
"APP_COOKIE",
name="sesssionpersistences_type"),
nullable=False)
cookie_name = sa.Column(sa.String(1024))
class PoolStatistics(model_base.BASEV2):
"""Represents pool statistics """
pool_id = sa.Column(sa.String(36), sa.ForeignKey("pools.id"),
primary_key=True)
bytes_in = sa.Column(sa.Integer, nullable=False)
bytes_out = sa.Column(sa.Integer, nullable=False)
active_connections = sa.Column(sa.Integer, nullable=False)
total_connections = sa.Column(sa.Integer, nullable=False)
class Vip(model_base.BASEV2, models_v2.HasId, models_v2.HasTenant):
"""Represents a v2 quantum loadbalancer vip."""
name = sa.Column(sa.String(255))
description = sa.Column(sa.String(255))
port_id = sa.Column(sa.String(36), sa.ForeignKey('ports.id'))
protocol_port = sa.Column(sa.Integer, nullable=False)
protocol = sa.Column(sa.Enum("HTTP", "HTTPS", "TCP", name="lb_protocols"),
nullable=False)
pool_id = sa.Column(sa.String(36), nullable=False)
session_persistence = orm.relationship(SessionPersistence,
uselist=False,
backref="vips",
cascade="all, delete-orphan")
status = sa.Column(sa.String(16), nullable=False)
admin_state_up = sa.Column(sa.Boolean(), nullable=False)
connection_limit = sa.Column(sa.Integer)
port = orm.relationship(models_v2.Port)
class Member(model_base.BASEV2, models_v2.HasId, models_v2.HasTenant):
"""Represents a v2 quantum loadbalancer member."""
pool_id = sa.Column(sa.String(36), sa.ForeignKey("pools.id"),
nullable=False)
address = sa.Column(sa.String(64), nullable=False)
protocol_port = sa.Column(sa.Integer, nullable=False)
weight = sa.Column(sa.Integer, nullable=False)
status = sa.Column(sa.String(16), nullable=False)
admin_state_up = sa.Column(sa.Boolean(), nullable=False)
class Pool(model_base.BASEV2, models_v2.HasId, models_v2.HasTenant):
"""Represents a v2 quantum loadbalancer pool."""
vip_id = sa.Column(sa.String(36), sa.ForeignKey("vips.id"))
name = sa.Column(sa.String(255))
description = sa.Column(sa.String(255))
subnet_id = sa.Column(sa.String(36), nullable=False)
protocol = sa.Column(sa.Enum("HTTP", "HTTPS", "TCP", name="lb_protocols"),
nullable=False)
lb_method = sa.Column(sa.Enum("ROUND_ROBIN",
"LEAST_CONNECTIONS",
"SOURCE_IP",
name="pools_lb_method"),
nullable=False)
status = sa.Column(sa.String(16), nullable=False)
admin_state_up = sa.Column(sa.Boolean(), nullable=False)
stats = orm.relationship(PoolStatistics,
uselist=False,
backref="pools",
cascade="all, delete-orphan")
members = orm.relationship(Member, backref="pools",
cascade="all, delete-orphan")
monitors = orm.relationship("PoolMonitorAssociation", backref="pools",
cascade="all, delete-orphan")
class HealthMonitor(model_base.BASEV2, models_v2.HasId, models_v2.HasTenant):
"""Represents a v2 quantum loadbalancer healthmonitor."""
type = sa.Column(sa.Enum("PING", "TCP", "HTTP", "HTTPS",
name="healthmontiors_type"),
nullable=False)
delay = sa.Column(sa.Integer, nullable=False)
timeout = sa.Column(sa.Integer, nullable=False)
max_retries = sa.Column(sa.Integer, nullable=False)
http_method = sa.Column(sa.String(16))
url_path = sa.Column(sa.String(255))
expected_codes = sa.Column(sa.String(64))
status = sa.Column(sa.String(16), nullable=False)
admin_state_up = sa.Column(sa.Boolean(), nullable=False)
class PoolMonitorAssociation(model_base.BASEV2):
"""
Represents the many-to-many association between pool and
healthMonitor classes
"""
pool_id = sa.Column(sa.String(36),
sa.ForeignKey("pools.id"),
primary_key=True)
monitor_id = sa.Column(sa.String(36),
sa.ForeignKey("healthmonitors.id"),
primary_key=True)
monitor = orm.relationship("HealthMonitor",
backref="pools_poolmonitorassociations")
class LoadBalancerPluginDb(LoadBalancerPluginBase):
"""
A class that wraps the implementation of the Quantum
loadbalancer plugin database access interface using SQLAlchemy models.
"""
@property
def _core_plugin(self):
return manager.QuantumManager.get_plugin()
# TODO(lcui):
# A set of internal facility methods are borrowed from QuantumDbPluginV2
# class and hence this is duplicate. We need to pull out those methods
# into a seperate class which can be used by both QuantumDbPluginV2 and
# this class (and others).
def _get_tenant_id_for_create(self, context, resource):
if context.is_admin and 'tenant_id' in resource:
tenant_id = resource['tenant_id']
elif ('tenant_id' in resource and
resource['tenant_id'] != context.tenant_id):
reason = _('Cannot create resource for another tenant')
raise q_exc.AdminRequired(reason=reason)
else:
tenant_id = context.tenant_id
return tenant_id
def _fields(self, resource, fields):
if fields:
return dict((key, item) for key, item in resource.iteritems()
if key in fields)
return resource
def _apply_filters_to_query(self, query, model, filters):
if filters:
for key, value in filters.iteritems():
column = getattr(model, key, None)
if column:
query = query.filter(column.in_(value))
return query
def _get_collection_query(self, context, model, filters=None):
collection = self._model_query(context, model)
collection = self._apply_filters_to_query(collection, model, filters)
return collection
def _get_collection(self, context, model, dict_func, filters=None,
fields=None, sorts=None, limit=None, marker_obj=None,
page_reverse=False):
query = self._get_collection_query(context, model, filters)
return [dict_func(c, fields) for c in query.all()]
def _get_collection_count(self, context, model, filters=None):
return self._get_collection_query(context, model, filters).count()
def _model_query(self, context, model):
query = context.session.query(model)
query_filter = None
if not context.is_admin and hasattr(model, 'tenant_id'):
if hasattr(model, 'shared'):
query_filter = ((model.tenant_id == context.tenant_id) |
(model.shared))
else:
query_filter = (model.tenant_id == context.tenant_id)
if query_filter is not None:
query = query.filter(query_filter)
return query
def _get_by_id(self, context, model, id):
query = self._model_query(context, model)
return query.filter(model.id == id).one()
def update_status(self, context, model, id, status):
with context.session.begin(subtransactions=True):
v_db = self._get_resource(context, model, id)
v_db.update({'status': status})
def _get_resource(self, context, model, id):
try:
r = self._get_by_id(context, model, id)
except exc.NoResultFound:
if issubclass(model, Vip):
raise loadbalancer.VipNotFound(vip_id=id)
elif issubclass(model, Pool):
raise loadbalancer.PoolNotFound(pool_id=id)
elif issubclass(model, Member):
raise loadbalancer.MemberNotFound(member_id=id)
elif issubclass(model, HealthMonitor):
raise loadbalancer.HealthMonitorNotFound(monitor_id=id)
else:
raise
return r
########################################################
# VIP DB access
def _make_vip_dict(self, vip, fields=None):
fixed_ip = (vip.port.fixed_ips or [{}])[0]
res = {'id': vip['id'],
'tenant_id': vip['tenant_id'],
'name': vip['name'],
'description': vip['description'],
'subnet_id': fixed_ip.get('subnet_id'),
'address': fixed_ip.get('ip_address'),
'port_id': vip['port_id'],
'protocol_port': vip['protocol_port'],
'protocol': vip['protocol'],
'pool_id': vip['pool_id'],
'connection_limit': vip['connection_limit'],
'admin_state_up': vip['admin_state_up'],
'status': vip['status']}
if vip['session_persistence']:
s_p = {
'type': vip['session_persistence']['type']
}
if vip['session_persistence']['type'] == 'APP_COOKIE':
s_p['cookie_name'] = vip['session_persistence']['cookie_name']
res['session_persistence'] = s_p
return self._fields(res, fields)
def _update_pool_vip_info(self, context, pool_id, vip_id):
pool_db = self._get_resource(context, Pool, pool_id)
with context.session.begin(subtransactions=True):
pool_db.update({'vip_id': vip_id})
def _check_session_persistence_info(self, info):
""" Performs sanity check on session persistence info.
:param info: Session persistence info
"""
if info['type'] == 'APP_COOKIE':
if not info.get('cookie_name'):
raise ValueError(_("'cookie_name' should be specified for this"
" type of session persistence."))
else:
if 'cookie_name' in info:
raise ValueError(_("'cookie_name' is not allowed for this type"
" of session persistence"))
def _create_session_persistence_db(self, session_info, vip_id):
self._check_session_persistence_info(session_info)
sesspersist_db = SessionPersistence(
type=session_info['type'],
cookie_name=session_info.get('cookie_name'),
vip_id=vip_id)
return sesspersist_db
def _update_vip_session_persistence(self, context, vip_id, info):
self._check_session_persistence_info(info)
vip = self._get_resource(context, Vip, vip_id)
with context.session.begin(subtransactions=True):
# Update sessionPersistence table
sess_qry = context.session.query(SessionPersistence)
sesspersist_db = sess_qry.filter_by(vip_id=vip_id).first()
# Insert a None cookie_info if it is not present to overwrite an
# an existing value in the database.
if 'cookie_name' not in info:
info['cookie_name'] = None
if sesspersist_db:
sesspersist_db.update(info)
else:
sesspersist_db = SessionPersistence(
type=info['type'],
cookie_name=info['cookie_name'],
vip_id=vip_id)
context.session.add(sesspersist_db)
# Update vip table
vip.session_persistence = sesspersist_db
context.session.add(vip)
def _delete_session_persistence(self, context, vip_id):
with context.session.begin(subtransactions=True):
sess_qry = context.session.query(SessionPersistence)
sess_qry.filter_by(vip_id=vip_id).delete()
def _create_port_for_vip(self, context, vip_db, subnet_id, ip_address):
# resolve subnet and create port
subnet = self._core_plugin.get_subnet(context, subnet_id)
fixed_ip = {'subnet_id': subnet['id']}
if ip_address and ip_address != attributes.ATTR_NOT_SPECIFIED:
fixed_ip['ip_address'] = ip_address
port_data = {
'tenant_id': vip_db.tenant_id,
'name': 'vip-' + vip_db.id,
'network_id': subnet['network_id'],
'mac_address': attributes.ATTR_NOT_SPECIFIED,
'admin_state_up': False,
'device_id': '',
'device_owner': '',
'fixed_ips': [fixed_ip]
}
port = self._core_plugin.create_port(context, {'port': port_data})
vip_db.port_id = port['id']
def create_vip(self, context, vip):
v = vip['vip']
tenant_id = self._get_tenant_id_for_create(context, v)
with context.session.begin(subtransactions=True):
vip_db = Vip(id=uuidutils.generate_uuid(),
tenant_id=tenant_id,
name=v['name'],
description=v['description'],
port_id=None,
protocol_port=v['protocol_port'],
protocol=v['protocol'],
pool_id=v['pool_id'],
connection_limit=v['connection_limit'],
admin_state_up=v['admin_state_up'],
status=constants.PENDING_CREATE)
vip_id = vip_db['id']
session_info = v['session_persistence']
if session_info:
s_p = self._create_session_persistence_db(session_info, vip_id)
vip_db.session_persistence = s_p
context.session.add(vip_db)
context.session.flush()
self._create_port_for_vip(
context,
vip_db,
v['subnet_id'],
v.get('address')
)
self._update_pool_vip_info(context, v['pool_id'], vip_id)
return self._make_vip_dict(vip_db)
def update_vip(self, context, id, vip):
v = vip['vip']
sess_persist = v.pop('session_persistence', None)
with context.session.begin(subtransactions=True):
if sess_persist:
self._update_vip_session_persistence(context, id, sess_persist)
else:
self._delete_session_persistence(context, id)
vip_db = self._get_resource(context, Vip, id)
old_pool_id = vip_db['pool_id']
if v:
vip_db.update(v)
# If the pool_id is changed, we need to update
# the associated pools
if 'pool_id' in v:
self._update_pool_vip_info(context, old_pool_id, None)
self._update_pool_vip_info(context, v['pool_id'], id)
return self._make_vip_dict(vip_db)
def delete_vip(self, context, id):
with context.session.begin(subtransactions=True):
vip = self._get_resource(context, Vip, id)
qry = context.session.query(Pool)
for pool in qry.filter_by(vip_id=id).all():
pool.update({"vip_id": None})
context.session.delete(vip)
if vip.port: # this is a Quantum port
self._core_plugin.delete_port(context, vip.port.id)
context.session.flush()
def get_vip(self, context, id, fields=None):
vip = self._get_resource(context, Vip, id)
return self._make_vip_dict(vip, fields)
def get_vips(self, context, filters=None, fields=None):
return self._get_collection(context, Vip,
self._make_vip_dict,
filters=filters, fields=fields)
########################################################
# Pool DB access
def _make_pool_dict(self, context, pool, fields=None):
res = {'id': pool['id'],
'tenant_id': pool['tenant_id'],
'name': pool['name'],
'description': pool['description'],
'subnet_id': pool['subnet_id'],
'protocol': pool['protocol'],
'vip_id': pool['vip_id'],
'lb_method': pool['lb_method'],
'admin_state_up': pool['admin_state_up'],
'status': pool['status']}
# Get the associated members
res['members'] = [member['id'] for member in pool['members']]
# Get the associated health_monitors
res['health_monitors'] = [
monitor['monitor_id'] for monitor in pool['monitors']]
return self._fields(res, fields)
def _update_pool_member_info(self, context, pool_id, membersInfo):
with context.session.begin(subtransactions=True):
member_qry = context.session.query(Member)
for member_id in membersInfo:
try:
member = member_qry.filter_by(id=member_id).one()
member.update({'pool_id': pool_id})
except exc.NoResultFound:
raise loadbalancer.MemberNotFound(member_id=member_id)
def _create_pool_stats(self, context, pool_id):
# This is internal method to add pool statistics. It won't
# be exposed to API
stats_db = PoolStatistics(
pool_id=pool_id,
bytes_in=0,
bytes_out=0,
active_connections=0,
total_connections=0
)
return stats_db
def _delete_pool_stats(self, context, pool_id):
# This is internal method to delete pool statistics. It won't
# be exposed to API
with context.session.begin(subtransactions=True):
stats_qry = context.session.query(PoolStatistics)
try:
stats = stats_qry.filter_by(pool_id=pool_id).one()
except exc.NoResultFound:
raise loadbalancer.PoolStatsNotFound(pool_id=pool_id)
context.session.delete(stats)
def create_pool(self, context, pool):
v = pool['pool']
tenant_id = self._get_tenant_id_for_create(context, v)
with context.session.begin(subtransactions=True):
pool_db = Pool(id=uuidutils.generate_uuid(),
tenant_id=tenant_id,
name=v['name'],
description=v['description'],
subnet_id=v['subnet_id'],
protocol=v['protocol'],
lb_method=v['lb_method'],
admin_state_up=v['admin_state_up'],
status=constants.PENDING_CREATE)
pool_db.stats = self._create_pool_stats(context, pool_db['id'])
context.session.add(pool_db)
pool_db = self._get_resource(context, Pool, pool_db['id'])
return self._make_pool_dict(context, pool_db)
def update_pool(self, context, id, pool):
v = pool['pool']
with context.session.begin(subtransactions=True):
pool_db = self._get_resource(context, Pool, id)
if v:
pool_db.update(v)
return self._make_pool_dict(context, pool_db)
def delete_pool(self, context, id):
# Check if the pool is in use
vip = context.session.query(Vip).filter_by(pool_id=id).first()
if vip:
raise loadbalancer.PoolInUse(pool_id=id)
with context.session.begin(subtransactions=True):
self._delete_pool_stats(context, id)
pool_db = self._get_resource(context, Pool, id)
context.session.delete(pool_db)
def get_pool(self, context, id, fields=None):
pool = self._get_resource(context, Pool, id)
return self._make_pool_dict(context, pool, fields)
def get_pools(self, context, filters=None, fields=None):
collection = self._model_query(context, Pool)
collection = self._apply_filters_to_query(collection, Pool, filters)
return [self._make_pool_dict(context, c, fields)
for c in collection.all()]
def get_stats(self, context, pool_id):
with context.session.begin(subtransactions=True):
pool_qry = context.session.query(Pool)
try:
pool = pool_qry.filter_by(id=pool_id).one()
stats = pool['stats']
except exc.NoResultFound:
raise loadbalancer.PoolStatsNotFound(pool_id=pool_id)
res = {'bytes_in': stats['bytes_in'],
'bytes_out': stats['bytes_out'],
'active_connections': stats['active_connections'],
'total_connections': stats['total_connections']}
return {'stats': res}
def create_pool_health_monitor(self, context, health_monitor, pool_id):
monitor_id = health_monitor['health_monitor']['id']
with context.session.begin(subtransactions=True):
monitor_qry = context.session.query(HealthMonitor)
try:
monitor = monitor_qry.filter_by(id=monitor_id).one()
monitor.update({'pool_id': pool_id})
except exc.NoResultFound:
raise loadbalancer.HealthMonitorNotFound(monitor_id=monitor_id)
try:
qry = context.session.query(Pool)
pool = qry.filter_by(id=pool_id).one()
except exc.NoResultFound:
raise loadbalancer.PoolNotFound(pool_id=pool_id)
assoc = PoolMonitorAssociation(pool_id=pool_id,
monitor_id=monitor_id)
assoc.monitor = monitor
pool.monitors.append(assoc)
monitors = []
try:
qry = context.session.query(Pool)
pool = qry.filter_by(id=pool_id).one()
for monitor in pool['monitors']:
monitors.append(monitor['monitor_id'])
except exc.NoResultFound:
pass
res = {"health_monitor": monitors}
return res
def delete_pool_health_monitor(self, context, id, pool_id):
with context.session.begin(subtransactions=True):
try:
pool_qry = context.session.query(Pool)
pool = pool_qry.filter_by(id=pool_id).one()
except exc.NoResultFound:
raise loadbalancer.PoolNotFound(pool_id=pool_id)
try:
monitor_qry = context.session.query(PoolMonitorAssociation)
monitor = monitor_qry.filter_by(monitor_id=id,
pool_id=pool_id).one()
pool.monitors.remove(monitor)
except exc.NoResultFound:
raise loadbalancer.HealthMonitorNotFound(monitor_id=id)
def get_pool_health_monitor(self, context, id, pool_id, fields=None):
healthmonitor = self._get_resource(context, HealthMonitor, id)
return self._make_health_monitor_dict(healthmonitor, fields)
########################################################
# Member DB access
def _make_member_dict(self, member, fields=None):
res = {'id': member['id'],
'tenant_id': member['tenant_id'],
'pool_id': member['pool_id'],
'address': member['address'],
'protocol_port': member['protocol_port'],
'weight': member['weight'],
'admin_state_up': member['admin_state_up'],
'status': member['status']}
return self._fields(res, fields)
def create_member(self, context, member):
v = member['member']
tenant_id = self._get_tenant_id_for_create(context, v)
with context.session.begin(subtransactions=True):
pool = None
try:
qry = context.session.query(Pool)
pool = qry.filter_by(id=v['pool_id']).one()
except exc.NoResultFound:
raise loadbalancer.PoolNotFound(pool_id=v['pool_id'])
member_db = Member(id=uuidutils.generate_uuid(),
tenant_id=tenant_id,
pool_id=v['pool_id'],
address=v['address'],
protocol_port=v['protocol_port'],
weight=v['weight'],
admin_state_up=v['admin_state_up'],
status=constants.PENDING_CREATE)
context.session.add(member_db)
return self._make_member_dict(member_db)
def update_member(self, context, id, member):
v = member['member']
with context.session.begin(subtransactions=True):
member_db = self._get_resource(context, Member, id)
old_pool_id = member_db['pool_id']
if v:
member_db.update(v)
return self._make_member_dict(member_db)
def delete_member(self, context, id):
with context.session.begin(subtransactions=True):
member_db = self._get_resource(context, Member, id)
context.session.delete(member_db)
def get_member(self, context, id, fields=None):
member = self._get_resource(context, Member, id)
return self._make_member_dict(member, fields)
def get_members(self, context, filters=None, fields=None):
return self._get_collection(context, Member,
self._make_member_dict,
filters=filters, fields=fields)
########################################################
# HealthMonitor DB access
def _make_health_monitor_dict(self, health_monitor, fields=None):
res = {'id': health_monitor['id'],
'tenant_id': health_monitor['tenant_id'],
'type': health_monitor['type'],
'delay': health_monitor['delay'],
'timeout': health_monitor['timeout'],
'max_retries': health_monitor['max_retries'],
'admin_state_up': health_monitor['admin_state_up'],
'status': health_monitor['status']}
# no point to add the values below to
# the result if the 'type' is not HTTP/S
if res['type'] in ['HTTP', 'HTTPS']:
for attr in ['url_path', 'http_method', 'expected_codes']:
res[attr] = health_monitor[attr]
return self._fields(res, fields)
def create_health_monitor(self, context, health_monitor):
v = health_monitor['health_monitor']
tenant_id = self._get_tenant_id_for_create(context, v)
with context.session.begin(subtransactions=True):
monitor_db = HealthMonitor(id=uuidutils.generate_uuid(),
tenant_id=tenant_id,
type=v['type'],
delay=v['delay'],
timeout=v['timeout'],
max_retries=v['max_retries'],
http_method=v['http_method'],
url_path=v['url_path'],
expected_codes=v['expected_codes'],
admin_state_up=v['admin_state_up'],
status=constants.PENDING_CREATE)
context.session.add(monitor_db)
return self._make_health_monitor_dict(monitor_db)
def update_health_monitor(self, context, id, health_monitor):
v = health_monitor['health_monitor']
with context.session.begin(subtransactions=True):
monitor_db = self._get_resource(context, HealthMonitor, id)
if v:
monitor_db.update(v)
return self._make_health_monitor_dict(monitor_db)
def delete_health_monitor(self, context, id):
with context.session.begin(subtransactions=True):
assoc_qry = context.session.query(PoolMonitorAssociation)
pool_qry = context.session.query(Pool)
for assoc in assoc_qry.filter_by(monitor_id=id).all():
try:
pool = pool_qry.filter_by(id=assoc['pool_id']).one()
except exc.NoResultFound:
raise loadbalancer.PoolNotFound(pool_id=pool['id'])
pool.monitors.remove(assoc)
monitor_db = self._get_resource(context, HealthMonitor, id)
context.session.delete(monitor_db)
def get_health_monitor(self, context, id, fields=None):
healthmonitor = self._get_resource(context, HealthMonitor, id)
return self._make_health_monitor_dict(healthmonitor, fields)
def get_health_monitors(self, context, filters=None, fields=None):
return self._get_collection(context, HealthMonitor,
self._make_health_monitor_dict,
filters=filters, fields=fields)