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 if node_id == self.fuel_node_id:
38 disk_size = disk_sizes['fuel']
40 roles = self.dea.get_node_role(node_id)
41 role = 'controller' if 'controller' in roles else 'compute'
42 disk_size = disk_sizes[role]
43 exec_cmd('qemu-img create -f qcow2 %s %s' % (disk_path, disk_size))
46 temp_dir = tempfile.mkdtemp()
47 disk_sizes = self.dha.get_disks()
48 for node_id in self.node_ids:
49 vm_name = self.dha.get_node_property(node_id, 'libvirtName')
50 vm_template = '%s/%s' % (self.root_dir,
51 self.dha.get_node_property(
52 node_id, 'libvirtTemplate'))
53 check_file_exists(vm_template)
54 disk_path = '%s/%s.raw' % (self.storage_dir, vm_name)
55 self.create_storage(node_id, disk_path, disk_sizes)
56 temp_vm_file = '%s/%s' % (temp_dir, vm_name)
57 exec_cmd('cp %s %s' % (vm_template, temp_vm_file))
58 self.define_vm(vm_name, temp_vm_file, disk_path)
62 for node_id in self.node_ids:
63 self.dha.node_power_on(node_id)
65 def create_networks(self):
66 for net_file in glob.glob('%s/*' % self.network_dir):
67 exec_cmd('virsh net-define %s' % net_file)
68 for net in self.net_names:
69 log('Creating network %s' % net)
70 exec_cmd('virsh net-autostart %s' % net)
71 exec_cmd('virsh net-start %s' % net)
73 def delete_networks(self):
74 for net in self.net_names:
75 log('Deleting network %s' % net)
76 exec_cmd('virsh net-destroy %s' % net, False)
77 exec_cmd('virsh net-undefine %s' % net, False)
79 def get_net_name(self, net_file):
80 with open(net_file) as f:
81 net_xml = etree.parse(f)
82 name_list = net_xml.xpath('/network/name')
83 for name in name_list:
87 def collect_net_names(self):
89 for net_file in glob.glob('%s/*' % self.network_dir):
90 name = self.get_net_name(net_file)
95 for node_id in self.node_ids:
96 self.delete_vm(node_id)
99 def setup_environment(self):
100 check_dir_exists(self.network_dir)
101 self.cleanup_environment()
102 self.create_networks()
106 def cleanup_environment(self):
108 self.delete_networks()