sfa/openstack/osaggregate.py

   1 import base64
   2
   3 from nova.exception import ImageNotFound
   4 from nova.api.ec2.cloud import CloudController
   5 from sfa.util.faults import SfaAPIError
   6 from sfa.rspecs.rspec import RSpec
   7 from sfa.rspecs.elements.hardware_type import HardwareType
   8 from sfa.rspecs.elements.node import Node
   9 from sfa.rspecs.elements.sliver import Sliver
  10 from sfa.rspecs.elements.login import Login
  11 from sfa.rspecs.elements.disk_image import DiskImage
  12 from sfa.rspecs.elements.services import Services
  13 from sfa.util.xrn import Xrn
  14 from sfa.util.osxrn import OSXrn
  15 from sfa.rspecs.version_manager import VersionManager
  16 from sfa.openstack.image import Image
  17 from sfa.openstack.security_group import SecurityGroup
  18
  19
  20 def instance_to_sliver(instance, slice_xrn=None):
  21     # should include?
  22     # * instance.image_ref
  23     # * instance.kernel_id
  24     # * instance.ramdisk_id
  25     import nova.db.sqlalchemy.models
  26     name=None
  27     type=None
  28     sliver_id = None
  29     if isinstance(instance, dict):
  30         # this is an isntance type dict
  31         name = instance['name']
  32         type = instance['name']
  33     elif isinstance(instance, nova.db.sqlalchemy.models.Instance):
  34         # this is an object that describes a running instance
  35         name = instance.display_name
  36         type = instance.instance_type.name
  37     else:
  38         raise SfaAPIError("instnace must be an instance_type dict or" + \
  39                            " a nova.db.sqlalchemy.models.Instance object")
  40     if slice_xrn:
  41         xrn = Xrn(slice_xrn, 'slice')
  42         sliver_id = xrn.get_sliver_id(instance.project_id, instance.hostname, instance.id)
  43
  44     sliver = Sliver({'slice_id': sliver_id,
  45                      'name': name,
  46                      'type': 'plos-' + type,
  47                      'tags': []})
  48     return sliver
  49
  50
  51 class OSAggregate:
  52
  53     def __init__(self, driver):
  54         self.driver = driver
  55
  56     def get_rspec(self, slice_xrn=None, version=None, options={}):
  57         version_manager = VersionManager()
  58         version = version_manager.get_version(version)
  59         if not slice_xrn:
  60             rspec_version = version_manager._get_version(version.type, version.version, 'ad')
  61             nodes = self.get_aggregate_nodes()
  62         else:
  63             rspec_version = version_manager._get_version(version.type, version.version, 'manifest')
  64             nodes = self.get_slice_nodes(slice_xrn)
  65         rspec = RSpec(version=rspec_version, user_options=options)
  66         rspec.version.add_nodes(nodes)
  67         return rspec.toxml()
  68
  69     def get_slice_nodes(self, slice_xrn):
  70         image_manager = Image(self.driver)
  71         name = OSXrn(xrn = slice_xrn).name
  72         instances = self.driver.shell.db.instance_get_all_by_project(name)
  73         rspec_nodes = []
  74         for instance in instances:
  75             rspec_node = Node()
  76             xrn = OSXrn(instance.hostname, 'node')
  77             rspec_node['component_id'] = xrn.urn
  78             rspec_node['component_name'] = xrn.name
  79             rspec_node['component_manager_id'] = Xrn(self.driver.hrn, 'authority+cm').get_urn()
  80             sliver = instance_to_sliver(instance)
  81             disk_image = image_manager.get_disk_image(instance.image_ref)
  82             sliver['disk_images'] = [Image.disk_image_to_rspec_object(disk_image)]
  83             rspec_node['slivers'] = [sliver]
  84             rspec_nodes.append(rspec_node)
  85         return rspec_nodes
  86
  87     def get_aggregate_nodes(self):
  88
  89         zones = self.driver.shell.db.zone_get_all()
  90         if not zones:
  91             zones = ['cloud']
  92         else:
  93             zones = [zone.name for zone in zones]
  94
  95         # available sliver/instance/vm types
  96         instances = self.driver.shell.db.instance_type_get_all().values()
  97         # available images
  98         image_manager = Image(self.driver)
  99         disk_images = image_manager.get_available_disk_images()
 100         disk_image_objects = [Image.disk_image_to_rspec_object(image) \
 101                                for image in disk_images]
 102         rspec_nodes = []
 103         for zone in zones:
 104             rspec_node = Node()
 105             xrn = OSXrn(zone, 'node')
 106             rspec_node['component_id'] = xrn.urn
 107             rspec_node['component_name'] = xrn.name
 108             rspec_node['component_manager_id'] = Xrn(self.driver.hrn, 'authority+cm').get_urn()
 109             rspec_node['exclusive'] = 'false'
 110             rspec_node['hardware_types'] = [HardwareType({'name': 'plos-pc'}),
 111                                                 HardwareType({'name': 'pc'})]
 112             slivers = []
 113             for instance in instances:
 114                 sliver = instance_to_sliver(instance)
 115                 sliver['disk_images'] = disk_image_objects
 116                 slivers.append(sliver)
 117
 118             rspec_node['slivers'] = slivers
 119             rspec_nodes.append(rspec_node)
 120
 121         return rspec_nodes
 122
 123
 124     def create_project(self, slicename, users, options={}):
 125         """
 126         Create the slice if it doesn't alredy exist. Create user
 127         accounts that don't already exist
 128         """
 129         from nova.exception import ProjectNotFound
 130         try:
 131             slice = self.driver.shell.auth_manager.get_project(slicename)
 132         except ProjectNotFound:
 133             # assume that the first user is the project manager
 134             proj_manager = Xrn(users[0]['urn']).get_leaf()
 135             self.driver.shell.auth_manager.create_project(slicename, proj_manager)
 136
 137         for user in users:
 138             username = Xrn(user['urn']).get_leaf()
 139             try:
 140                 self.driver.shell.auth_manager.get_user(username)
 141             except nova.exception.UserNotFound:
 142                 self.driver.shell.auth_manager.create_user(username)
 143             self.verify_user_keys(username, user['keys'], options)
 144
 145     def verify_user_keys(self, username, keys, options={}):
 146         """
 147         Add requested keys.
 148         """
 149         append = options.get('append', True)
 150         existing_keys = self.driver.shell.db.key_pair_get_all_by_user(username)
 151         existing_pub_keys = [key.public_key for key in existing_keys]
 152         removed_pub_keys = set(existing_pub_keys).difference(keys)
 153         added_pub_keys = set(keys).difference(existing_pub_keys)
 154         pubkeys = []
 155         # add new keys
 156         for public_key in added_pub_keys:
 157             key = {}
 158             key['user_id'] = username
 159             key['name'] =  username
 160             key['public'] = public_key
 161             self.driver.shell.db.key_pair_create(key)
 162
 163         # remove old keys
 164         if not append:
 165             for key in existing_keys:
 166                 if key.public_key in removed_pub_keys:
 167                     self.driver.shell.db.key_pair_destroy(username, key.name)
 168
 169
 170     def create_security_group(self, group_name, fw_rules=[]):
 171         security_group = SecurityGroup(self.driver)
 172         security_group.create_security_group(group_name)
 173         for rule in fw_rules:
 174             security_group.add_rule_to_group(group_name,
 175                                              protocol = rule.get('protocol'),
 176                                              cidr_ip = rule.get('cidr_ip'),
 177                                              port_range = rule.get('port_range'),
 178                                              icmp_type_code = rule.get('icmp_type_code'))
 179
 180     def add_rule_to_security_group(self, group_name, **kwds):
 181         security_group = SecurityGroup(self.driver)
 182         security_group.add_rule_to_group(group_name=group_name,
 183                                          protocol=kwds.get('protocol'),
 184                                          cidr_ip =kwds.get('cidr_ip'),
 185                                          icmp_type_code = kwds.get('icmp_type_code'))
 186
 187
 188     def reserve_instance(self, image_id, kernel_id, ramdisk_id, \
 189                          instance_type, key_name, user_data):
 190         conn  = self.driver.euca_shell
 191         logger.info('Reserving an instance: image: %s, kernel: ' + \
 192                     '%s, ramdisk: %s, type: %s, key: %s' % \
 193                     (image_id, kernel_id, ramdisk_id,
 194                     instance_type, key_name))
 195         try:
 196             reservation = conn.run_instances(image_id=image_id,
 197                                              kernel_id=kernel_id,
 198                                              ramdisk_id=ramdisk_id,
 199                                              instance_type=instance_type,
 200                                              key_name=key_name,
 201                                              user_data = user_data,
 202                                              security_groups=group_names)
 203                                              #placement=zone,
 204                                              #min_count=min_count,
 205                                              #max_count=max_count,
 206
 207         except EC2ResponseError, ec2RespError:
 208             logger.log_exc(ec2RespError)
 209
 210     def run_instances(self, slicename, rspec, keyname, pubkeys):
 211         """
 212         Create the security groups and instances.
 213         """
 214         # the default image to use for instnaces that dont
 215         # explicitly request an image.
 216         # Just choose the first available image for now.
 217         image_manager = Image(self.driver)
 218         available_images = image_manager.get_available_disk_images()
 219         default_image = image_manager.get_disk_images()[0]
 220         default_ami_id = CloudController.image_ec2_id(default_image['ami']['id'])
 221         default_aki_id = CloudController.image_ec2_id(default_image['aki']['id'])
 222         default_ari_id = CloudController.image_ec2_id(default_image['ari']['id'])
 223
 224         # get requested slivers
 225         rspec = RSpec(rspec)
 226         requested_instances = defaultdict(list)
 227         # iterate over clouds/zones/nodes
 228         for node in rspec.version.get_nodes_with_slivers():
 229             instance_types = node.get('slivers', [])
 230             if isinstance(instance_types, list):
 231                 # iterate over sliver/instance types
 232                 for instance_type in instance_types:
 233                     fw_rules = instance_type.get('fw_rules', [])
 234                     # Each sliver get's its own security group.
 235                     # Keep security group names unique by appending some random
 236                     # characters on end.
 237                     group_name = "_".join([slicename,
 238                                            instance_type['name'],
 239                                            base64.b64encode(os.urandom(6))])
 240                     self.create_security_group(group_name, fw_rules)
 241                     ami_id = default_ami_id
 242                     aki_id = default_aki_id
 243                     ari_id = default_ari_id
 244                     req_image = instance_type.get('disk_images')
 245                     if req_image and isinstance(req_image, list):
 246                         req_image_name = req_image[0]['name']
 247                         disk_image = image_manager.get_disk_image(name=req_image_name)
 248                         if disk_image:
 249                             ami_id = CloudController.image_ec2_id(disk_image['ami']['id'])
 250                             aki_id = CloudController.image_ec2_id(disk_image['aki']['id'])
 251                             ari_id = CloudController.image_ec2_id(disk_image['ari']['id'])
 252                     # start the instance
 253                     self.reserve_instance(image_id=ami_id,
 254                                           kernel_id=aki_id,
 255                                           ramdisk_id=ari_id,
 256                                           instance_type=instance_type['name'],
 257                                           key_name=keyname,
 258                                           user_data=pubkeys,
 259                                           group_name=group_name)
 260
 261
 262     def delete_instances(self, project_name):
 263         instances = self.driver.shell.db.instance_get_all_by_project(project_name)
 264         security_group_manager = SecurityGroup(self)
 265         for instance in instances:
 266             # deleate this instance's security groups
 267             for security_group in instance.security_groups:
 268                 # dont delete the default security group
 269                 if security_group.name != 'default':
 270                     security_group_manager.delete_security_group(security_group.name)
 271             # destroy instance
 272             self.driver.shell.db.instance_destroy(instance.id)
 273         return 1
 274
 275     def stop_instances(self, project_name):
 276         instances = self.driver.shell.db.instance_get_all_by_project(project_name)
 277         for instance in instances:
 278             self.driver.shell.db.instance_stop(instance.id)
 279         return 1
 280
 281     def update_instances(self, project_name):
 282         pass