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# vim: tabstop=4 shiftwidth=4 softtabstop=4
# Copyright (c) 2012 NTT DOCOMO, INC.
# 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.
import errno
import os
import shutil
from nova.openstack.common import log as logging
from nova.virt.disk import api as disk_api
from nova.virt.libvirt import utils as libvirt_utils
LOG = logging.getLogger(__name__)
def cache_image(context, target, image_id, user_id, project_id):
if not os.path.exists(target):
libvirt_utils.fetch_image(context, target, image_id,
user_id, project_id)
def inject_into_image(image, key, net, metadata, admin_password,
files, partition, use_cow=False):
try:
disk_api.inject_data(image, key, net, metadata, admin_password,
files, partition, use_cow)
except Exception as e:
LOG.warn(_("Failed to inject data into image %(image)s. "
"Error: %(e)s") % locals())
def unlink_without_raise(path):
try:
os.unlink(path)
except OSError as e:
if e.errno == errno.ENOENT:
return
else:
LOG.warn(_("Failed to unlink %(path)s, error: %(e)s") % locals())
def rmtree_without_raise(path):
try:
if os.path.isdir(path):
shutil.rmtree(path)
except OSError as e:
LOG.warn(_("Failed to remove dir %(path)s, error: %(e)s") % locals())
def write_to_file(path, contents):
with open(path, 'w') as f:
f.write(contents)
def create_link_without_raise(source, link):
try:
os.symlink(source, link)
except OSError as e:
if e.errno == errno.EEXIST:
return
else:
LOG.warn(_("Failed to create symlink from %(source)s to %(link)s"
", error: %(e)s") % locals())
def random_alnum(count):
import random
import string
chars = string.ascii_uppercase + string.digits
return "".join(random.choice(chars) for _ in range(count))
def map_network_interfaces(network_info, use_ipv6=False):
# TODO(deva): fix assumption that device names begin with "eth"
# and fix assumption about ordering
if not isinstance(network_info, list):
network_info = [network_info]
interfaces = []
for id, (network, mapping) in enumerate(network_info):
address_v6 = None
gateway_v6 = None
netmask_v6 = None
if use_ipv6:
address_v6 = mapping['ip6s'][0]['ip']
netmask_v6 = mapping['ip6s'][0]['netmask']
gateway_v6 = mapping['gateway_v6']
interface = {
'name': 'eth%d' % id,
'address': mapping['ips'][0]['ip'],
'gateway': mapping['gateway'],
'netmask': mapping['ips'][0]['netmask'],
'dns': ' '.join(mapping['dns']),
'address_v6': address_v6,
'gateway_v6': gateway_v6,
'netmask_v6': netmask_v6,
}
interfaces.append(interface)
return interfaces
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