5 from execution_environment import ExecutionEnvironment
7 exec_cmd = common.exec_cmd
10 check_dir_exists = common.check_dir_exists
11 check_file_exists = common.check_file_exists
12 check_if_root = common.check_if_root
14 NET_DIR = 'libvirt/networks'
16 class LibvirtEnvironment(ExecutionEnvironment):
18 def __init__(self, storage_dir, dha_file, dea, root_dir):
19 super(LibvirtEnvironment, self).__init__(
20 storage_dir, dha_file, root_dir)
22 self.network_dir = '%s/%s' % (self.root_dir, NET_DIR)
23 self.node_ids = self.dha.get_all_node_ids()
24 self.net_names = self.collect_net_names()
26 def create_storage(self, node_id, disk_path, disk_sizes):
27 if node_id == self.fuel_node_id:
28 disk_size = disk_sizes['fuel']
30 roles = self.dea.get_node_role(node_id)
31 role = 'controller' if 'controller' in roles else 'compute'
32 disk_size = disk_sizes[role]
33 exec_cmd('fallocate -l %s %s' % (disk_size, disk_path))
36 temp_dir = exec_cmd('mktemp -d')
37 disk_sizes = self.dha.get_disks()
38 for node_id in self.node_ids:
39 vm_name = self.dha.get_node_property(node_id, 'libvirtName')
40 vm_template = '%s/%s' % (self.root_dir,
41 self.dha.get_node_property(
42 node_id, 'libvirtTemplate'))
43 check_file_exists(vm_template)
44 disk_path = '%s/%s.raw' % (self.storage_dir, vm_name)
45 self.create_storage(node_id, disk_path, disk_sizes)
46 temp_vm_file = '%s/%s' % (temp_dir, vm_name)
47 exec_cmd('cp %s %s' % (vm_template, temp_vm_file))
48 self.define_vm(vm_name, temp_vm_file, disk_path)
49 exec_cmd('rm -fr %s' % temp_dir)
51 def create_networks(self):
52 for net_file in glob.glob('%s/*' % self.network_dir):
53 exec_cmd('virsh net-define %s' % net_file)
54 for net in self.net_names:
55 log('Creating network %s' % net)
56 exec_cmd('virsh net-autostart %s' % net)
57 exec_cmd('virsh net-start %s' % net)
59 def delete_networks(self):
60 for net in self.net_names:
61 log('Deleting network %s' % net)
62 exec_cmd('virsh net-destroy %s' % net, False)
63 exec_cmd('virsh net-undefine %s' % net, False)
65 def get_net_name(self, net_file):
66 with open(net_file) as f:
67 net_xml = etree.parse(f)
68 name_list = net_xml.xpath('/network/name')
69 for name in name_list:
73 def collect_net_names(self):
75 for net_file in glob.glob('%s/*' % self.network_dir):
76 name = self.get_net_name(net_file)
81 for node_id in self.node_ids:
82 self.delete_vm(node_id)
84 def setup_environment(self):
86 check_dir_exists(self.network_dir)
87 self.cleanup_environment()
89 self.create_networks()
91 def cleanup_environment(self):
93 self.delete_networks()