doctor_tests/instance.py

   1 ##############################################################################
   2 # Copyright (c) 2017 ZTE Corporation and others.
   3 #
   4 # All rights reserved. This program and the accompanying materials
   5 # are made available under the terms of the Apache License, Version 2.0
   6 # which accompanies this distribution, and is available at
   7 # http://www.apache.org/licenses/LICENSE-2.0
   8 ##############################################################################
   9 import os
  10 import time
  11
  12 from oslo_config import cfg
  13
  14 from doctor_tests.identity_auth import get_identity_auth
  15 from doctor_tests.identity_auth import get_session
  16 from doctor_tests.os_clients import neutron_client
  17 from doctor_tests.os_clients import nova_client
  18
  19 OPTS = [
  20     cfg.StrOpt('flavor',
  21                default='m1.tiny',
  22                help='the name of flavor',
  23                required=True),
  24     cfg.IntOpt('instance_count',
  25                default=os.environ.get('VM_COUNT', 1),
  26                help='the count of instance',
  27                required=True),
  28     cfg.StrOpt('instance_basename',
  29                default='doctor_vm',
  30                help='the base name of instance',
  31                required=True),
  32 ]
  33
  34
  35 class Instance(object):
  36
  37     def __init__(self, conf, log):
  38         self.conf = conf
  39         self.log = log
  40         self.auth = get_identity_auth(username=self.conf.doctor_user,
  41                                       password=self.conf.doctor_passwd,
  42                                       project=self.conf.doctor_project)
  43         self.nova = \
  44             nova_client(conf.nova_version,
  45                         get_session(auth=self.auth))
  46         self.neutron = neutron_client(get_session(auth=self.auth))
  47         self.servers = {}
  48         self.vm_names = []
  49
  50     def create(self):
  51         self.log.info('instance create start......')
  52
  53         # get flavor, image and network for vm boot
  54         flavors = {flavor.name: flavor for flavor in self.nova.flavors.list()}
  55         flavor = flavors.get(self.conf.flavor)
  56         image = self.nova.glance.find_image(self.conf.image_name)
  57         network = self.neutron.list_networks(name=self.conf.net_name)['networks'][0]
  58         nics = {'net-id': network['id']}
  59
  60         self.servers = \
  61             {getattr(server, 'name'): server
  62              for server in self.nova.servers.list()}
  63         for i in range(0, self.conf.instance_count):
  64             vm_name = "%s%d"%(self.conf.instance_basename, i)
  65             self.vm_names.append(vm_name)
  66             if vm_name not in self.servers:
  67                 server = self.nova.servers.create(vm_name, image,
  68                                                   flavor, nics=[nics])
  69                 self.servers[vm_name] = server
  70                 time.sleep(0.1)
  71
  72         self.log.info('instance create end......')
  73
  74     def delete(self):
  75         self.log.info('instance delete start.......')
  76
  77         for vm_name in self.vm_names:
  78             if vm_name in self.servers:
  79                 self.nova.servers.delete(self.servers[vm_name])
  80                 time.sleep(0.1)
  81
  82         # check that all vms are deleted
  83         while self.nova.servers.list():
  84             time.sleep(0.1)
  85         self.servers.clear()
  86         del self.vm_names[:]
  87
  88         self.log.info('instance delete end.......')
  89
  90     def wait_for_vm_launch(self):
  91         self.log.info('wait for vm launch start......')
  92
  93         wait_time = 60
  94         count = 0
  95         while count < wait_time:
  96             active_count = 0
  97             for vm_name in self.vm_names:
  98                 server = self.nova.servers.get(self.servers[vm_name])
  99                 server_status = getattr(server, 'status').lower()
 100                 if 'active' == server_status:
 101                     active_count += 1
 102                 elif 'error' == server_status:
 103                     raise Exception('vm launched with error state')
 104                 else:
 105                     time.sleep(2)
 106                     count += 1
 107                     continue
 108             if active_count == self.conf.instance_count:
 109                 self.log.info('wait for vm launch end......')
 110                 return
 111             count += 1
 112             time.sleep(2)
 113         raise Exception('time out for vm launch')
 114