8c4b0830a8
When subnet associated to a pool deleted, the pool detail page will throw an exception. Fix the problem by showing a warning message when failed to get the expand resources for the pool. Change-Id: I9f853505db625527de69c8f620b988e6e42a4339 Closes-bug: #1406879
376 lines
13 KiB
Python
376 lines
13 KiB
Python
# Copyright 2013, Big Switch Networks, Inc.
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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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from __future__ import absolute_import
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from django.utils.datastructures import SortedDict
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from django.utils.translation import ugettext_lazy as _
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from horizon import messages
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from openstack_dashboard.api import neutron
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neutronclient = neutron.neutronclient
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class Vip(neutron.NeutronAPIDictWrapper):
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"""Wrapper for neutron load balancer vip."""
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def __init__(self, apiresource):
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super(Vip, self).__init__(apiresource)
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class Pool(neutron.NeutronAPIDictWrapper):
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"""Wrapper for neutron load balancer pool."""
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def __init__(self, apiresource):
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if 'provider' not in apiresource:
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apiresource['provider'] = None
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super(Pool, self).__init__(apiresource)
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class Member(neutron.NeutronAPIDictWrapper):
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"""Wrapper for neutron load balancer member."""
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def __init__(self, apiresource):
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super(Member, self).__init__(apiresource)
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class PoolStats(neutron.NeutronAPIDictWrapper):
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"""Wrapper for neutron load balancer pool stats."""
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def __init__(self, apiresource):
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super(PoolStats, self).__init__(apiresource)
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class PoolMonitor(neutron.NeutronAPIDictWrapper):
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"""Wrapper for neutron load balancer pool health monitor."""
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def __init__(self, apiresource):
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super(PoolMonitor, self).__init__(apiresource)
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def vip_create(request, **kwargs):
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"""Create a vip for a specified pool.
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:param request: request context
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:param address: virtual IP address
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:param name: name for vip
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:param description: description for vip
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:param subnet_id: subnet_id for subnet of vip
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:param protocol_port: transport layer port number for vip
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:returns: Vip object
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"""
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body = {'vip': {'name': kwargs['name'],
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'description': kwargs['description'],
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'subnet_id': kwargs['subnet_id'],
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'protocol_port': kwargs['protocol_port'],
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'protocol': kwargs['protocol'],
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'pool_id': kwargs['pool_id'],
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'session_persistence': kwargs['session_persistence'],
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'admin_state_up': kwargs['admin_state_up']
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}}
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if kwargs.get('connection_limit'):
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body['vip']['connection_limit'] = kwargs['connection_limit']
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if kwargs.get('address'):
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body['vip']['address'] = kwargs['address']
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vip = neutronclient(request).create_vip(body).get('vip')
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return Vip(vip)
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def vip_list(request, **kwargs):
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vips = neutronclient(request).list_vips(**kwargs).get('vips')
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return [Vip(v) for v in vips]
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def vip_get(request, vip_id):
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return _vip_get(request, vip_id, expand_resource=True)
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def _vip_get(request, vip_id, expand_resource=False):
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vip = neutronclient(request).show_vip(vip_id).get('vip')
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if expand_resource:
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vip['subnet'] = neutron.subnet_get(request, vip['subnet_id'])
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vip['port'] = neutron.port_get(request, vip['port_id'])
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vip['pool'] = _pool_get(request, vip['pool_id'])
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return Vip(vip)
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def vip_update(request, vip_id, **kwargs):
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vip = neutronclient(request).update_vip(vip_id, kwargs).get('vip')
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return Vip(vip)
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def vip_delete(request, vip_id):
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neutronclient(request).delete_vip(vip_id)
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def pool_create(request, **kwargs):
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"""Create a pool for specified protocol
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:param request: request context
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:param name: name for pool
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:param description: description for pool
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:param subnet_id: subnet_id for subnet of pool
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:param protocol: load balanced protocol
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:param lb_method: load balancer method
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:param admin_state_up: admin state (default on)
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"""
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body = {'pool': {'name': kwargs['name'],
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'description': kwargs['description'],
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'subnet_id': kwargs['subnet_id'],
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'protocol': kwargs['protocol'],
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'lb_method': kwargs['lb_method'],
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'admin_state_up': kwargs['admin_state_up'],
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'provider': kwargs['provider'],
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}}
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pool = neutronclient(request).create_pool(body).get('pool')
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return Pool(pool)
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def _get_vip(request, pool, vip_dict, expand_name_only=False):
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if pool['vip_id'] is not None:
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try:
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if vip_dict:
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vip = vip_dict.get(pool['vip_id'])
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else:
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vip = _vip_get(request, pool['vip_id'])
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except Exception:
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messages.warning(request, _("Unable to get VIP for pool "
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"%(pool)s.") % {"pool": pool["id"]})
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vip = Vip({'id': pool['vip_id'], 'name': ''})
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if expand_name_only:
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vip = vip.name_or_id
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return vip
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else:
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return None
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def pool_list(request, **kwargs):
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return _pool_list(request, expand_subnet=True, expand_vip=True, **kwargs)
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def _pool_list(request, expand_subnet=False, expand_vip=False, **kwargs):
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pools = neutronclient(request).list_pools(**kwargs).get('pools')
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if expand_subnet:
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subnets = neutron.subnet_list(request)
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subnet_dict = SortedDict((s.id, s) for s in subnets)
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for p in pools:
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subnet = subnet_dict.get(p['subnet_id'])
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p['subnet_name'] = subnet.cidr if subnet else None
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if expand_vip:
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vips = vip_list(request)
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vip_dict = SortedDict((v.id, v) for v in vips)
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for p in pools:
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p['vip_name'] = _get_vip(request, p, vip_dict,
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expand_name_only=True)
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return [Pool(p) for p in pools]
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def pool_get(request, pool_id):
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return _pool_get(request, pool_id, expand_resource=True)
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def _pool_get(request, pool_id, expand_resource=False):
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try:
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pool = neutronclient(request).show_pool(pool_id).get('pool')
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except Exception:
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messages.warning(request, _("Unable to get pool detail."))
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return None
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if expand_resource:
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# TODO(lyj): The expand resource(subnet, member etc.) attached
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# to a pool could be deleted without cleanup pool related database,
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# this will cause exceptions if we trying to get the deleted resources.
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# so we need to handle the situation by showing a warning message here.
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# we can safely remove the try/except once the neutron bug is fixed
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# https://bugs.launchpad.net/neutron/+bug/1406854
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try:
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pool['subnet'] = neutron.subnet_get(request, pool['subnet_id'])
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except Exception:
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messages.warning(request, _("Unable to get subnet for pool "
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"%(pool)s.") % {"pool": pool_id})
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pool['vip'] = _get_vip(request, pool, vip_dict=None,
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expand_name_only=False)
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try:
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pool['members'] = _member_list(request, expand_pool=False,
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pool_id=pool_id)
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except Exception:
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messages.warning(request, _("Unable to get members for pool "
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"%(pool)s.") % {"pool": pool_id})
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try:
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pool['health_monitors'] = pool_health_monitor_list(
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request, id=pool['health_monitors'])
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except Exception:
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messages.warning(request,
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_("Unable to get health monitors "
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"for pool %(pool)s.") % {"pool": pool_id})
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return Pool(pool)
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def pool_update(request, pool_id, **kwargs):
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pool = neutronclient(request).update_pool(pool_id, kwargs).get('pool')
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return Pool(pool)
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def pool_delete(request, pool):
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neutronclient(request).delete_pool(pool)
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# not linked to UI yet
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def pool_stats(request, pool_id, **kwargs):
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stats = neutronclient(request).retrieve_pool_stats(pool_id, **kwargs)
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return PoolStats(stats)
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def pool_health_monitor_create(request, **kwargs):
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"""Create a health monitor
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:param request: request context
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:param type: type of monitor
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:param delay: delay of monitor
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:param timeout: timeout of monitor
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:param max_retries: max retries [1..10]
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:param http_method: http method
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:param url_path: url path
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:param expected_codes: http return code
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:param admin_state_up: admin state
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"""
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monitor_type = kwargs['type'].upper()
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body = {'health_monitor': {'type': monitor_type,
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'delay': kwargs['delay'],
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'timeout': kwargs['timeout'],
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'max_retries': kwargs['max_retries'],
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'admin_state_up': kwargs['admin_state_up']
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}}
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if monitor_type in ['HTTP', 'HTTPS']:
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body['health_monitor']['http_method'] = kwargs['http_method']
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body['health_monitor']['url_path'] = kwargs['url_path']
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body['health_monitor']['expected_codes'] = kwargs['expected_codes']
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mon = neutronclient(request).create_health_monitor(body).get(
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'health_monitor')
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return PoolMonitor(mon)
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def pool_health_monitor_list(request, **kwargs):
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monitors = neutronclient(request).list_health_monitors(
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**kwargs).get('health_monitors')
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return [PoolMonitor(m) for m in monitors]
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def pool_health_monitor_get(request, monitor_id):
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return _pool_health_monitor_get(request, monitor_id, expand_resource=True)
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def _pool_health_monitor_get(request, monitor_id, expand_resource=False):
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monitor = neutronclient(request
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).show_health_monitor(monitor_id
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).get('health_monitor')
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if expand_resource:
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pool_ids = [p['pool_id'] for p in monitor['pools']]
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monitor['pools'] = _pool_list(request, id=pool_ids)
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return PoolMonitor(monitor)
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def pool_health_monitor_update(request, monitor_id, **kwargs):
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monitor = neutronclient(request).update_health_monitor(monitor_id, kwargs)
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return PoolMonitor(monitor)
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def pool_health_monitor_delete(request, mon_id):
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neutronclient(request).delete_health_monitor(mon_id)
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def member_create(request, **kwargs):
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"""Create a load balance member
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:param request: request context
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:param pool_id: pool_id of pool for member
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:param address: IP address
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:param protocol_port: transport layer port number
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:param weight: weight for member
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:param admin_state_up: admin_state
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"""
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body = {'member': {'pool_id': kwargs['pool_id'],
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'address': kwargs['address'],
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'protocol_port': kwargs['protocol_port'],
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'admin_state_up': kwargs['admin_state_up']
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}}
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if kwargs.get('weight'):
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body['member']['weight'] = kwargs['weight']
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member = neutronclient(request).create_member(body).get('member')
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return Member(member)
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def member_list(request, **kwargs):
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return _member_list(request, expand_pool=True, **kwargs)
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def _member_list(request, expand_pool, **kwargs):
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members = neutronclient(request).list_members(**kwargs).get('members')
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if expand_pool:
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pools = _pool_list(request)
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pool_dict = SortedDict((p.id, p) for p in pools)
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for m in members:
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m['pool_name'] = pool_dict.get(m['pool_id']).name_or_id
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return [Member(m) for m in members]
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def member_get(request, member_id):
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return _member_get(request, member_id, expand_pool=True)
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def _member_get(request, member_id, expand_pool):
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member = neutronclient(request).show_member(member_id).get('member')
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if expand_pool:
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member['pool'] = _pool_get(request, member['pool_id'])
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return Member(member)
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def member_update(request, member_id, **kwargs):
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member = neutronclient(request).update_member(member_id, kwargs)
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return Member(member)
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def member_delete(request, mem_id):
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neutronclient(request).delete_member(mem_id)
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def pool_monitor_association_create(request, **kwargs):
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"""Associate a health monitor with pool
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:param request: request context
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:param monitor_id: id of monitor
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:param pool_id: id of pool
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"""
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body = {'health_monitor': {'id': kwargs['monitor_id'], }}
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neutronclient(request).associate_health_monitor(
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kwargs['pool_id'], body)
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def pool_monitor_association_delete(request, **kwargs):
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"""Disassociate a health monitor from pool
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:param request: request context
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:param monitor_id: id of monitor
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:param pool_id: id of pool
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"""
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neutronclient(request).disassociate_health_monitor(
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kwargs['pool_id'], kwargs['monitor_id'])
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