/
virtual_machine_manager.py
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/
virtual_machine_manager.py
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# vim: tabstop=4 shiftwidth=4 softtabstop=4
# Copyright (c) 2014 Cloudwatt
# 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.
#
# @author: Rudra Rugge
from cfgm_common import svc_info
from vnc_api.vnc_api import *
from instance_manager import InstanceManager
from config_db import VirtualMachineSM
class VirtualMachineManager(InstanceManager):
def _create_service_vm(self, instance_index, si, st):
proj_name = si.fq_name[-2]
if si.flavor:
flavor = self._nc.oper('flavors', 'find', proj_name,
name=si.flavor)
else:
flavor = self._nc.oper('flavors', 'find', proj_name, ram=4096)
if not flavor:
self.logger.log_error("Flavor not found %s" %
((':').join(st.fq_name)))
return None
image = self._nc.oper('images', 'find', proj_name, name=si.image)
if not image:
self.logger.log_error("Image not found %s" % si.image)
return None
instance_name = self._get_instance_name(si, instance_index)
# create port
nics_with_port = []
for nic in si.vn_info:
nic_with_port = {}
vmi_obj = self._create_svc_vm_port(nic, instance_name, si, st)
nic_with_port['port-id'] = vmi_obj.get_uuid()
nics_with_port.append(nic_with_port)
# launch vm
self.logger.log_info('Launching VM : ' + instance_name)
nova_vm = self._nc.oper('servers', 'create', proj_name,
name=instance_name, image=image,
flavor=flavor, nics=nics_with_port,
availability_zone=si.availability_zone)
if not nova_vm:
self.logger.log_error("Nova vm create failed %s" % instance_name)
return None
nova_vm.get()
self.logger.log_info('Created VM : ' + str(nova_vm))
# link si and vm
self.link_si_to_vm(si, st, instance_index, nova_vm.id)
return nova_vm.id
def _validate_nova_objects(self, st, si):
# check image and flavor
si.flavor = st.params.get('flavor', None)
si.image = st.params.get('image_name', None)
if not si.image:
self.logger.log_error("Image not present in %s" %
((':').join(st.fq_name)))
return False
# get availability zone
if st.params.get('availability_zone_enable', None):
si.availability_zone = si.params.get('availability_zone')
elif self._args.availability_zone:
si.availability_zone = self._args.availability_zone
return True
def create_service(self, st, si):
if not self._validate_nova_objects(st, si):
return
if not self.validate_network_config(st, si):
return
# get current vm list
vm_list = [None] * si.max_instances
vm_id_list = list(si.virtual_machines)
for vm_id in vm_id_list:
vm = VirtualMachineSM.get(vm_id)
if not vm:
continue
if (vm.index + 1) > si.max_instances:
self.delete_service(vm)
continue
vm_list[vm.index] = vm
# create and launch vm
si.state = 'launching'
instances = []
for index in range(0, si.max_instances):
if vm_list[index]:
vm_uuid = vm_list[index].uuid
else:
vm_uuid = self._create_service_vm(index, si, st)
if not vm_uuid:
continue
instances.append({'uuid': vm_uuid})
# update static routes
self.update_static_routes(si)
# uve trace
si.state = 'active'
self.logger.uve_svc_instance(":".join(si.fq_name), status='CREATE',
vms=instances, st_name=st.name)
def delete_service(self, vm):
# instance ip delete
vmi_list = []
for vmi_id in vm.virtual_machine_interfaces:
vmi_list.append(vmi_id)
self.cleanup_svc_vm_ports(vmi_list)
# nova vm delete
proj_name = vm.proj_fq_name[-1]
nova_vm = self._nc.oper('servers', 'get', proj_name, id=vm.uuid)
if nova_vm:
try:
nova_vm.delete()
except Exception as e:
self.logger.log_error("%s nova delete failed with error %s" %
(vm.uuid, str(e)))
try:
self._vnc_lib.virtual_machine_delete(id=vm.uuid)
except NoIdError:
pass
except RefsExistError:
self.logger.log_error("%s vm delete RefsExist" % (vm.uuid))
def check_service(self, si):
vm_id_list = list(si.virtual_machines)
for vm_id in vm_id_list:
vm = self._nc.oper('servers', 'get', si.proj_name, id=vm_id)
if vm and vm.status == 'ERROR':
try:
vm.delete()
except Exception:
pass
return True