sfa/openstack/osaggregate.py

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