sfa/openstack/osaggregate.py

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