nfvbench/compute.py

   1 # Copyright 2016 Cisco Systems, Inc.  All rights reserved.
   2 #
   3 #    Licensed under the Apache License, Version 2.0 (the "License"); you may
   4 #    not use this file except in compliance with the License. You may obtain
   5 #    a copy of the License at
   6 #
   7 #         http://www.apache.org/licenses/LICENSE-2.0
   8 #
   9 #    Unless required by applicable law or agreed to in writing, software
  10 #    distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
  11 #    WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
  12 #    License for the specific language governing permissions and limitations
  13 #    under the License.
  14 """Module to interface with nova and glance."""
  15
  16 import time
  17 import traceback
  18
  19 from glanceclient import exc as glance_exception
  20 try:
  21     from glanceclient.openstack.common.apiclient.exceptions import NotFound as GlanceImageNotFound
  22 except ImportError:
  23     from glanceclient.v1.apiclient.exceptions import NotFound as GlanceImageNotFound
  24 import keystoneauth1
  25 import novaclient
  26
  27 from log import LOG
  28
  29
  30 class Compute(object):
  31     """Class to interface with nova and glance."""
  32
  33     def __init__(self, nova_client, glance_client, config):
  34         """Create a new compute instance to interact with nova and glance."""
  35         self.novaclient = nova_client
  36         self.glance_client = glance_client
  37         self.config = config
  38
  39     def find_image(self, image_name):
  40         """Find an image by name."""
  41         try:
  42             return next(self.glance_client.images.list(filters={'name': image_name}), None)
  43         except (novaclient.exceptions.NotFound, keystoneauth1.exceptions.http.NotFound,
  44                 GlanceImageNotFound):
  45             pass
  46         return None
  47
  48     def upload_image_via_url(self, final_image_name, image_file, retry_count=60):
  49         """Directly upload image to Nova via URL if image is not present."""
  50         retry = 0
  51         try:
  52             # check image is file/url based.
  53             with open(image_file) as f_image:
  54                 img = self.glance_client.images.create(name=str(final_image_name),
  55                                                        disk_format="qcow2",
  56                                                        container_format="bare",
  57                                                        visibility="public")
  58                 self.glance_client.images.upload(img.id, image_data=f_image)
  59             # Check for the image in glance
  60             while img.status in ['queued', 'saving'] and retry < retry_count:
  61                 img = self.glance_client.images.get(img.id)
  62                 retry += 1
  63                 LOG.debug("Image not yet active, retrying %s of %s...", retry, retry_count)
  64                 time.sleep(self.config.generic_poll_sec)
  65             if img.status != 'active':
  66                 LOG.error("Image uploaded but too long to get to active state")
  67                 raise Exception("Image update active state timeout")
  68         except glance_exception.HTTPForbidden:
  69             LOG.error("Cannot upload image without admin access. Please make "
  70                       "sure the image is uploaded and is either public or owned by you.")
  71             return False
  72         except IOError:
  73             # catch the exception for file based errors.
  74             LOG.error("Failed while uploading the image. Please make sure the "
  75                       "image at the specified location %s is correct.", image_file)
  76             return False
  77         except keystoneauth1.exceptions.http.NotFound as exc:
  78             LOG.error("Authentication error while uploading the image: %s", str(exc))
  79             return False
  80         except Exception:
  81             LOG.error(traceback.format_exc())
  82             LOG.error("Failed to upload image %s.", image_file)
  83             return False
  84         return True
  85
  86     def delete_image(self, img_name):
  87         """Delete an image by name."""
  88         try:
  89             LOG.log("Deleting image %s...", img_name)
  90             img = self.find_image(image_name=img_name)
  91             self.glance_client.images.delete(img.id)
  92         except Exception:
  93             LOG.error("Failed to delete the image %s.", img_name)
  94             return False
  95
  96         return True
  97
  98     # Create a server instance with name vmname
  99     # and check that it gets into the ACTIVE state
 100     def create_server(self, vmname, image, flavor, key_name,
 101                       nic, sec_group, avail_zone=None, user_data=None,
 102                       config_drive=None, files=None):
 103         """Create a new server."""
 104         if sec_group:
 105             security_groups = [sec_group['id']]
 106         else:
 107             security_groups = None
 108
 109         # Also attach the created security group for the test
 110         LOG.info('Creating instance %s with AZ %s', vmname, avail_zone)
 111         instance = self.novaclient.servers.create(name=vmname,
 112                                                   image=image,
 113                                                   flavor=flavor,
 114                                                   key_name=key_name,
 115                                                   nics=nic,
 116                                                   availability_zone=avail_zone,
 117                                                   userdata=user_data,
 118                                                   config_drive=config_drive,
 119                                                   files=files,
 120                                                   security_groups=security_groups)
 121         return instance
 122
 123     def poll_server(self, instance):
 124         """Poll a server from its reference."""
 125         return self.novaclient.servers.get(instance.id)
 126
 127     def get_server_list(self):
 128         """Get the list of all servers."""
 129         servers_list = self.novaclient.servers.list()
 130         return servers_list
 131
 132     def delete_server(self, server):
 133         """Delete a server from its object reference."""
 134         self.novaclient.servers.delete(server)
 135
 136     def find_flavor(self, flavor_type):
 137         """Find a flavor by name."""
 138         try:
 139             flavor = self.novaclient.flavors.find(name=flavor_type)
 140             return flavor
 141         except Exception:
 142             return None
 143
 144     def create_flavor(self, name, ram, vcpus, disk, ephemeral=0):
 145         """Create a flavor."""
 146         return self.novaclient.flavors.create(name=name, ram=ram, vcpus=vcpus, disk=disk,
 147                                               ephemeral=ephemeral)
 148
 149     def get_hypervisor(self, hyper_name):
 150         """Get the hypervisor from its name.
 151
 152         Can raise novaclient.exceptions.NotFound
 153         """
 154         # first get the id from name
 155         hyper = self.novaclient.hypervisors.search(hyper_name)[0]
 156         # get full hypervisor object
 157         return self.novaclient.hypervisors.get(hyper.id)