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# Copyright 2016 Cisco Systems, 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.
"""Module to interface with nova and glance."""
import time
import traceback
from glanceclient import exc as glance_exception
try:
from glanceclient.openstack.common.apiclient.exceptions import NotFound as GlanceImageNotFound
except ImportError:
from glanceclient.v1.apiclient.exceptions import NotFound as GlanceImageNotFound
import keystoneauth1
import novaclient
from log import LOG
class Compute(object):
"""Class to interface with nova and glance."""
def __init__(self, nova_client, glance_client, config):
"""Create a new compute instance to interact with nova and glance."""
self.novaclient = nova_client
self.glance_client = glance_client
self.config = config
def find_image(self, image_name):
"""Find an image by name."""
try:
return next(self.glance_client.images.list(filters={'name': image_name}), None)
except (novaclient.exceptions.NotFound, keystoneauth1.exceptions.http.NotFound,
GlanceImageNotFound):
pass
return None
def upload_image_via_url(self, final_image_name, image_file, retry_count=60):
"""Directly upload image to Nova via URL if image is not present."""
retry = 0
try:
# check image is file/url based.
with open(image_file) as f_image:
img = self.glance_client.images.create(name=str(final_image_name),
disk_format="qcow2",
container_format="bare",
visibility="public")
self.glance_client.images.upload(img.id, image_data=f_image)
# Check for the image in glance
while img.status in ['queued', 'saving'] and retry < retry_count:
img = self.glance_client.images.get(img.id)
retry += 1
LOG.debug("Image not yet active, retrying %s of %s...", retry, retry_count)
time.sleep(self.config.generic_poll_sec)
if img.status != 'active':
LOG.error("Image uploaded but too long to get to active state")
raise Exception("Image update active state timeout")
except glance_exception.HTTPForbidden:
LOG.error("Cannot upload image without admin access. Please make "
"sure the image is uploaded and is either public or owned by you.")
return False
except IOError:
# catch the exception for file based errors.
LOG.error("Failed while uploading the image. Please make sure the "
"image at the specified location %s is correct.", image_file)
return False
except keystoneauth1.exceptions.http.NotFound as exc:
LOG.error("Authentication error while uploading the image: %s", str(exc))
return False
except Exception:
LOG.error(traceback.format_exc())
LOG.error("Failed to upload image %s.", image_file)
return False
return True
def delete_image(self, img_name):
"""Delete an image by name."""
try:
LOG.log("Deleting image %s...", img_name)
img = self.find_image(image_name=img_name)
self.glance_client.images.delete(img.id)
except Exception:
LOG.error("Failed to delete the image %s.", img_name)
return False
return True
def image_multiqueue_enabled(self, img):
"""Check if multiqueue property is enabled on given image."""
try:
return img['hw_vif_multiqueue_enabled'] == 'true'
except KeyError:
return False
def image_set_multiqueue(self, img, enabled):
"""Set multiqueue property as enabled or disabled on given image."""
cur_mqe = self.image_multiqueue_enabled(img)
LOG.info('Image %s hw_vif_multiqueue_enabled property is "%s"',
img.name, str(cur_mqe).lower())
if cur_mqe != enabled:
mqe = str(enabled).lower()
self.glance_client.images.update(img.id, hw_vif_multiqueue_enabled=mqe)
img['hw_vif_multiqueue_enabled'] = mqe
LOG.info('Image %s hw_vif_multiqueue_enabled property changed to "%s"', img.name, mqe)
# Create a server instance with name vmname
# and check that it gets into the ACTIVE state
def create_server(self, vmname, image, flavor, key_name,
nic, sec_group, avail_zone=None, user_data=None,
config_drive=None, files=None):
"""Create a new server."""
if sec_group:
security_groups = [sec_group['id']]
else:
security_groups = None
# Also attach the created security group for the test
LOG.info('Creating instance %s with AZ: "%s"', vmname, avail_zone)
instance = self.novaclient.servers.create(name=vmname,
image=image,
flavor=flavor,
key_name=key_name,
nics=nic,
availability_zone=avail_zone,
userdata=user_data,
config_drive=config_drive,
files=files,
security_groups=security_groups)
return instance
def poll_server(self, instance):
"""Poll a server from its reference."""
return self.novaclient.servers.get(instance.id)
def get_server_list(self):
"""Get the list of all servers."""
servers_list = self.novaclient.servers.list()
return servers_list
def delete_server(self, server):
"""Delete a server from its object reference."""
self.novaclient.servers.delete(server)
def find_flavor(self, flavor_type):
"""Find a flavor by name."""
try:
flavor = self.novaclient.flavors.find(name=flavor_type)
return flavor
except Exception:
return None
def create_flavor(self, name, ram, vcpus, disk, ephemeral=0):
"""Create a flavor."""
return self.novaclient.flavors.create(name=name, ram=ram, vcpus=vcpus, disk=disk,
ephemeral=ephemeral)
def get_hypervisor(self, hyper_name):
"""Get the hypervisor from its name.
Can raise novaclient.exceptions.NotFound
"""
# first get the id from name
hyper = self.novaclient.hypervisors.search(hyper_name)[0]
# get full hypervisor object
return self.novaclient.hypervisors.get(hyper.id)
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