summaryrefslogtreecommitdiffstats
path: root/deploy/dha_adapters/libvirt_adapter.py
blob: 466f134ae3e03a90252f3a9529d6bb8123239221 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
###############################################################################
# Copyright (c) 2015 Ericsson AB and others.
# szilard.cserey@ericsson.com
# All rights reserved. This program and the accompanying materials
# are made available under the terms of the Apache License, Version 2.0
# which accompanies this distribution, and is available at
# http://www.apache.org/licenses/LICENSE-2.0
###############################################################################


from lxml import etree
from hardware_adapter import HardwareAdapter
import tempfile
import os

from common import (
    log,
    exec_cmd,
    err,
    delete,
)

DEV = {'pxe': 'network',
       'disk': 'hd',
       'iso': 'cdrom'}

VOL_XML_TEMPLATE = '''<volume type='file'>
  <name>{name}</name>
  <capacity unit='{unit}'>{size!s}</capacity>
  <target>
    <format type='{format_type}'/>
  </target>
</volume>'''

DEFAULT_POOL = 'jenkins'

class LibvirtAdapter(HardwareAdapter):

    def __init__(self, yaml_path):
        super(LibvirtAdapter, self).__init__(yaml_path)
        self.parser = etree.XMLParser(remove_blank_text=True)

    def node_power_off(self, node_id):
        vm_name = self.get_node_property(node_id, 'libvirtName')
        log('Power OFF Node %s' % vm_name)
        state = exec_cmd('virsh domstate %s' % vm_name)
        if state == 'running':
            exec_cmd('virsh destroy %s' % vm_name, False)

    def node_power_on(self, node_id):
        vm_name = self.get_node_property(node_id, 'libvirtName')
        log('Power ON Node %s' % vm_name)
        state = exec_cmd('virsh domstate %s' % vm_name)
        if state == 'shut off':
            exec_cmd('virsh start %s' % vm_name)

    def node_reset(self, node_id):
        vm_name = self.get_node_property(node_id, 'libvirtName')
        log('Reset Node %s' % vm_name)
        exec_cmd('virsh reset %s' % vm_name)

    def translate(self, boot_order_list):
        translated = []
        for boot_dev in boot_order_list:
            if boot_dev in DEV:
                translated.append(DEV[boot_dev])
            else:
                err('Boot device %s not recognized' % boot_dev)
        return translated

    def node_set_boot_order(self, node_id, boot_order_list):
        boot_order_list = self.translate(boot_order_list)
        vm_name = self.get_node_property(node_id, 'libvirtName')
        temp_dir = tempfile.mkdtemp()
        log('Set boot order %s on Node %s' % (boot_order_list, vm_name))
        resp = exec_cmd('virsh dumpxml %s' % vm_name)
        xml_dump = etree.fromstring(resp, self.parser)
        os = xml_dump.xpath('/domain/os')
        for o in os:
            for bootelem in ['boot', 'bootmenu']:
                boot = o.xpath(bootelem)
                for b in boot:
                    o.remove(b)
            for dev in boot_order_list:
                b = etree.Element('boot')
                b.set('dev', dev)
                o.append(b)
            bmenu = etree.Element('bootmenu')
            bmenu.set('enable', 'no')
            o.append(bmenu)
        tree = etree.ElementTree(xml_dump)
        xml_file = temp_dir + '/%s.xml' % vm_name
        with open(xml_file, 'w') as f:
            tree.write(f, pretty_print=True, xml_declaration=True)
        exec_cmd('virsh define %s' % xml_file)
        delete(temp_dir)

    def node_zero_mbr(self, node_id):
        vm_name = self.get_node_property(node_id, 'libvirtName')
        resp = exec_cmd('virsh dumpxml %s' % vm_name)
        xml_dump = etree.fromstring(resp)
        disks = xml_dump.xpath('/domain/devices/disk')
        for disk in disks:
            if disk.get('device') == 'disk':
                sources = disk.xpath('source')
                for source in sources:
                    disk_file = source.get('file')
                    disk_size = exec_cmd('qemu-img info '
                                         '%s |grep \"virtual size:\"'
                                         % disk_file).split()[2]
                    delete(disk_file)
                    exec_cmd('qemu-img create -f qcow2 %s %s' % (disk_file,
                                                                 disk_size))

    def node_eject_iso(self, node_id):
        vm_name = self.get_node_property(node_id, 'libvirtName')
        device = self.get_name_of_device(vm_name, 'cdrom')
        exec_cmd('virsh change-media %s --eject %s --config --live'
                 % (vm_name, device), False)

    def node_insert_iso(self, node_id, iso_file):
        vm_name = self.get_node_property(node_id, 'libvirtName')
        device = self.get_name_of_device(vm_name, 'cdrom')
        exec_cmd('virsh change-media %s --insert %s %s'
                 % (vm_name, device, iso_file))

    def get_node_pxe_mac(self, node_id):
        mac_list = []
        vm_name = self.get_node_property(node_id, 'libvirtName')
        resp = exec_cmd('virsh dumpxml %s' % vm_name)
        xml_dump = etree.fromstring(resp)
        interfaces = xml_dump.xpath('/domain/devices/interface')
        for interface in interfaces:
            macs = interface.xpath('mac')
            for mac in macs:
                mac_list.append(mac.get('address').lower())
        return mac_list

    def get_name_of_device(self, vm_name, device_type):
        resp = exec_cmd('virsh dumpxml %s' % vm_name)
        xml_dump = etree.fromstring(resp)
        disks = xml_dump.xpath('/domain/devices/disk')
        for disk in disks:
            if disk.get('device') == device_type:
                targets = disk.xpath('target')
                for target in targets:
                    device = target.get('dev')
                    if device:
                        return device

    def get_virt_net_conf_dir(self):
        return self.dha_struct['virtNetConfDir']

    def upload_iso(self, iso_file):
        size = os.path.getsize(iso_file)
        vol_name = os.path.basename(iso_file)
        vol_xml = VOL_XML_TEMPLATE.format(name=vol_name, unit='bytes',
                                          size=size, format_type='raw')
        fd, fname = tempfile.mkstemp(text=True, suffix='deploy')
        os.write(fd, vol_xml)
        os.close(fd)

        log(vol_xml)
        pool = DEFAULT_POOL # FIXME
        exec_cmd('virsh vol-create --pool %s %s' % (pool, fname))
        vol_path = exec_cmd('virsh vol-path --pool %s %s' % (pool, vol_name))

        exec_cmd('virsh vol-upload %s %s' % (vol_path, iso_file),
                 attempts=5, delay=10, verbose=True)

        delete(fname)

        return vol_path