1 ###############################################################################
2 # Copyright (c) 2015 Ericsson AB and others.
3 # szilard.cserey@ericsson.com
4 # All rights reserved. This program and the accompanying materials
5 # are made available under the terms of the Apache License, Version 2.0
6 # which accompanies this distribution, and is available at
7 # http://www.apache.org/licenses/LICENSE-2.0
8 ###############################################################################
11 from lxml import etree
13 from execution_environment import ExecutionEnvironment
25 class LibvirtEnvironment(ExecutionEnvironment):
27 def __init__(self, storage_dir, dha_file, dea, root_dir):
28 super(LibvirtEnvironment, self).__init__(
29 storage_dir, dha_file, root_dir)
31 self.network_dir = '%s/%s' % (self.root_dir,
32 self.dha.get_virt_net_conf_dir())
33 self.node_ids = self.dha.get_all_node_ids()
34 self.net_names = self.collect_net_names()
36 def create_storage(self, node_id, disk_path, disk_sizes):
37 role = self.dea.get_node_main_role(node_id, self.fuel_node_id)
38 disk_size = disk_sizes[role]
39 exec_cmd('qemu-img create -f qcow2 %s %s' % (disk_path, disk_size))
42 temp_dir = tempfile.mkdtemp()
43 disk_sizes = self.dha.get_disks()
44 for node_id in self.node_ids:
45 vm_name = self.dha.get_node_property(node_id, 'libvirtName')
46 vm_template = '%s/%s' % (self.root_dir,
47 self.dha.get_node_property(
48 node_id, 'libvirtTemplate'))
49 check_file_exists(vm_template)
50 disk_path = '%s/%s.raw' % (self.storage_dir, vm_name)
51 self.create_storage(node_id, disk_path, disk_sizes)
52 number_cpus = self.dha.get_number_cpus(
53 self.dea.get_node_main_role(node_id, self.fuel_node_id))
54 temp_vm_file = '%s/%s' % (temp_dir, vm_name)
55 exec_cmd('cp %s %s' % (vm_template, temp_vm_file))
56 self.define_vm(vm_name, temp_vm_file, disk_path, number_cpus)
60 for node_id in self.node_ids:
61 self.dha.node_power_on(node_id)
63 def create_networks(self):
64 for net_file in glob.glob('%s/*' % self.network_dir):
65 exec_cmd('virsh net-define %s' % net_file)
66 for net in self.net_names:
67 log('Creating network %s' % net)
68 exec_cmd('virsh net-autostart %s' % net)
69 exec_cmd('virsh net-start %s' % net)
71 def delete_networks(self):
72 for net in self.net_names:
73 log('Deleting network %s' % net)
74 exec_cmd('virsh net-destroy %s' % net, False)
75 exec_cmd('virsh net-undefine %s' % net, False)
77 def get_net_name(self, net_file):
78 with open(net_file) as f:
79 net_xml = etree.parse(f)
80 name_list = net_xml.xpath('/network/name')
81 for name in name_list:
85 def collect_net_names(self):
87 for net_file in glob.glob('%s/*' % self.network_dir):
88 name = self.get_net_name(net_file)
93 for node_id in self.node_ids:
94 self.delete_vm(node_id)
97 def setup_environment(self):
98 check_dir_exists(self.network_dir)
99 self.cleanup_environment()
100 self.create_networks()
104 def cleanup_environment(self):
106 self.delete_networks()