planetstack/openstack/manager.py

   1 import os
   2 #os.environ.setdefault("DJANGO_SETTINGS_MODULE", "planetstack.settings")
   3 import string
   4 import random
   5
   6 from netaddr import IPAddress, IPNetwork
   7 from planetstack import settings
   8 from django.core import management
   9 from planetstack.config import Config
  10 try:
  11     from openstack.client import OpenStackClient
  12     from openstack.driver import OpenStackDriver
  13     from core.models import *
  14     has_openstack = True
  15 except:
  16     has_openstack = False
  17
  18 manager_enabled = Config().api_nova_enabled
  19
  20
  21 def random_string(size=6):
  22     return ''.join(random.choice(string.ascii_uppercase + string.digits) for x in range(size))
  23
  24 def require_enabled(callable):
  25     def wrapper(*args, **kwds):
  26         if manager_enabled and has_openstack:
  27             return callable(*args, **kwds)
  28         else:
  29             return None
  30     return wrapper
  31
  32
  33 class OpenStackManager:
  34
  35     def __init__(self, auth={}, caller=None):
  36         self.client = None
  37         self.driver = None
  38         self.caller = None
  39         self.has_openstack = has_openstack
  40         self.enabled = manager_enabled
  41
  42         if has_openstack and manager_enabled:
  43             if auth:
  44                 try:
  45                     self.init_user(auth, caller)
  46                 except:
  47                     # if this fails then it meanse the caller doesn't have a
  48                     # role at the slice's tenant. if the caller is an admin
  49                     # just use the admin client/manager.
  50                     if caller and caller.is_admin:
  51                         self.init_admin()
  52                     else: raise
  53             else:
  54                 self.init_admin()
  55
  56     @require_enabled
  57     def init_user(self, auth, caller):
  58         self.client = OpenStackClient(**auth)
  59         self.driver = OpenStackDriver(client=self.client)
  60         self.caller = caller
  61
  62     @require_enabled
  63     def init_admin(self):
  64         # use the admin credentials
  65         self.client = OpenStackClient()
  66         self.driver = OpenStackDriver(client=self.client)
  67         self.caller = self.driver.admin_user
  68         self.caller.kuser_id = self.caller.id
  69
  70     @require_enabled
  71     def save_role(self, role):
  72         if not role.role:
  73             keystone_role = self.driver.create_role(role.role_type)
  74             role.role = keystone_role.id
  75
  76     @require_enabled
  77     def delete_role(self, role):
  78         if role.role:
  79             self.driver.delete_role({'id': role.role})
  80
  81     @require_enabled
  82     def save_key(self, key):
  83         if not key.nkey_id:
  84             key_fields = {'name': random_string(8),
  85                           'key': key.key}
  86             nova_key = self.driver.create_keypair(**key_fields)
  87             key.nkey_id = nova_key.id
  88
  89     @require_enabled
  90     def delete_key(self, key):
  91         if key.nkey_id:
  92             self.driver.delete_keypair(key.nkey_id)
  93
  94     @require_enabled
  95     def save_user(self, user):
  96         if not user.kuser_id:
  97             name = user.email[:user.email.find('@')]
  98             user_fields = {'name': name,
  99                            'email': user.email,
 100                            'password': user.password,
 101                            'enabled': True}
 102             keystone_user = self.driver.create_user(**user_fields)
 103             user.kuser_id = keystone_user.id
 104         if user.site:
 105             self.driver.add_user_role(user.kuser_id, user.site.tenant_id, 'user')
 106             if user.is_admin:
 107                 self.driver.add_user_role(user.kuser_id, user.site.tenant_id, 'admin')
 108             else:
 109                 # may have admin role so attempt to remove it
 110                 self.driver.delete_user_role(user.kuser_id, user.site.tenant_id, 'admin')
 111
 112     @require_enabled
 113     def delete_user(self, user):
 114         if user.kuser_id:
 115             self.driver.delete_user(user.kuser_id)
 116
 117     @require_enabled
 118     def save_site(self, site, add_role=True):
 119         if not site.tenant_id:
 120             tenant = self.driver.create_tenant(tenant_name=site.login_base,
 121                                                description=site.name,
 122                                                enabled=site.enabled)
 123             site.tenant_id = tenant.id
 124             # give caller an admin role at the tenant they've created
 125             self.driver.add_user_role(self.caller.kuser_id, tenant.id, 'admin')
 126
 127         # update the record
 128         if site.id and site.tenant_id:
 129             self.driver.update_tenant(site.tenant_id,
 130                                       description=site.name,
 131                                       enabled=site.enabled)
 132
 133     @require_enabled
 134     def delete_site(self, site):
 135         if site.tenant_id:
 136             self.driver.delete_tenant(site.tenant_id)
 137
 138     @require_enabled
 139     def save_slice(self, slice):
 140         if not slice.tenant_id:
 141             nova_fields = {'tenant_name': slice.name,
 142                    'description': slice.description,
 143                    'enabled': slice.enabled}
 144             tenant = self.driver.create_tenant(**nova_fields)
 145             slice.tenant_id = tenant.id
 146
 147             # give caller an admin role at the tenant they've created
 148             self.driver.add_user_role(self.caller.kuser_id, tenant.id, 'admin')
 149
 150             # refresh credentials using this tenant
 151             self.driver.shell.connect(username=self.driver.shell.keystone.username,
 152                                       password=self.driver.shell.keystone.password,
 153                                       tenant=tenant.name)
 154
 155             # create network
 156             network = self.driver.create_network(slice.name)
 157             slice.network_id = network['id']
 158
 159             # create router
 160             router = self.driver.create_router(slice.name)
 161             slice.router_id = router['id']
 162
 163             # create subnet
 164             next_subnet = self.get_next_subnet()
 165             cidr = str(next_subnet.cidr)
 166             ip_version = next_subnet.version
 167             start = str(next_subnet[2])
 168             end = str(next_subnet[-2])
 169             subnet = self.driver.create_subnet(name=slice.name,
 170                                                network_id = network['id'],
 171                                                cidr_ip = cidr,
 172                                                ip_version = ip_version,
 173                                                start = start,
 174                                                end = end)
 175             slice.subnet_id = subnet['id']
 176             # add subnet as interface to slice's router
 177             self.driver.add_router_interface(router['id'], subnet['id'])
 178             # add external route
 179             self.driver.add_external_route(subnet)
 180
 181
 182         if slice.id and slice.tenant_id:
 183             self.driver.update_tenant(slice.tenant_id,
 184                                       description=slice.description,
 185                                       enabled=slice.enabled)
 186
 187     @require_enabled
 188     def delete_slice(self, slice):
 189         if slice.tenant_id:
 190             self.driver.delete_router_interface(slice.router_id, slice.subnet_id)
 191             self.driver.delete_subnet(slice.subnet_id)
 192             self.driver.delete_router(slice.router_id)
 193             self.driver.delete_network(slice.network_id)
 194             self.driver.delete_tenant(slice.tenant_id)
 195             # delete external route
 196             subnet = None
 197             subnets = self.driver.shell.quantum.list_subnets()['subnets']
 198             for snet in subnets:
 199                 if snet['id'] == slice.subnet_id:
 200                     subnet = snet
 201             if subnet:
 202                 self.driver.delete_external_route(subnet)
 203
 204
 205
 206     def get_next_subnet(self):
 207         # limit ourself to 10.0.x.x for now
 208         valid_subnet = lambda net: net.startswith('10.0')
 209         subnets = self.driver.shell.quantum.list_subnets()['subnets']
 210         ints = [int(IPNetwork(subnet['cidr']).ip) for subnet in subnets \
 211                 if valid_subnet(subnet['cidr'])]
 212         ints.sort()
 213         last_ip = IPAddress(ints[-1])
 214         last_network = IPNetwork(str(last_ip) + "/24")
 215         next_network = IPNetwork(str(IPAddress(last_network) + last_network.size) + "/24")
 216         return next_network
 217
 218     @require_enabled
 219     def save_subnet(self, subnet):
 220         if not subnet.subnet_id:
 221             quantum_subnet = self.driver.create_subnet(name= subnet.slice.name,
 222                                           network_id=subnet.slice.network_id,
 223                                           cidr_ip = subnet.cidr,
 224                                           ip_version=subnet.ip_version,
 225                                           start = subnet.start,
 226                                           end = subnet.end)
 227             subnet.subnet_id = quantum_subnet['id']
 228             # add subnet as interface to slice's router
 229             self.driver.add_router_interface(subnet.slice.router_id, subnet.subnet_id)
 230             #add_route = 'route add -net %s dev br-ex gw 10.100.0.5' % self.cidr
 231             #commands.getstatusoutput(add_route)
 232
 233
 234     @require_enabled
 235     def delete_subnet(self, subnet):
 236         if subnet.subnet_id:
 237             self.driver.delete_router_interface(subnet.slice.router_id, subnet.subnet_id)
 238             self.driver.delete_subnet(subnet.subnet_id)
 239             #del_route = 'route del -net %s' % self.cidr
 240             #commands.getstatusoutput(del_route)
 241
 242     @require_enabled
 243     def save_sliver(self, sliver):
 244         if not sliver.instance_id:
 245             instance = self.driver.spawn_instance(name=sliver.name,
 246                                    key_name = sliver.key.nkey_id,
 247                                    image_id = sliver.image.image_id,
 248                                    hostname = sliver.node.name )
 249             sliver.instance_id = instance.id
 250             sliver.instance_name = getattr(instance, 'OS-EXT-SRV-ATTR:instance_name')
 251
 252         if sliver.instance_id and ("numberCores" in sliver.changed_fields):
 253             self.driver.update_instance_metadata(sliver.instance_id, {"cpu_cores": str(sliver.numberCores)})
 254
 255     @require_enabled
 256     def delete_sliver(self, sliver):
 257         if sliver.instance_id:
 258             self.driver.destroy_instance(sliver.instance_id)
 259
 260
 261     def refresh_nodes(self):
 262         # collect local nodes
 263         nodes = Node.objects.all()
 264         nodes_dict = {}
 265         for node in nodes:
 266             if 'viccidev10' not in node.name:
 267                 nodes_dict[node.name] = node
 268
 269         deployment = Deployment.objects.filter(name='VICCI')[0]
 270         login_bases = ['princeton', 'stanford', 'gt', 'uw', 'mpisws']
 271         sites = Site.objects.filter(login_base__in=login_bases)
 272         # collect nova nodes:
 273         compute_nodes = self.client.nova.hypervisors.list()
 274
 275         compute_nodes_dict = {}
 276         for compute_node in compute_nodes:
 277             compute_nodes_dict[compute_node.hypervisor_hostname] = compute_node
 278
 279         # add new nodes:
 280         new_node_names = set(compute_nodes_dict.keys()).difference(nodes_dict.keys())
 281         i = 0
 282         max = len(sites)
 283         for name in new_node_names:
 284             if i == max:
 285                 i = 0
 286             site = sites[i]
 287             node = Node(name=compute_nodes_dict[name].hypervisor_hostname,
 288                         site=site,
 289                         deploymentNetwork=deployment)
 290             node.save()
 291             i+=1
 292
 293         # remove old nodes
 294         old_node_names = set(nodes_dict.keys()).difference(compute_nodes_dict.keys())
 295         Node.objects.filter(name__in=old_node_names).delete()
 296
 297     def refresh_images(self):
 298         from core.models.image import Image
 299         # collect local images
 300         images = Image.objects.all()
 301         images_dict = {}
 302         for image in images:
 303             images_dict[image.name] = image
 304
 305         # collect glance images
 306         glance_images = self.client.glance.get_images()
 307         glance_images_dict = {}
 308         for glance_image in glance_images:
 309             glance_images_dict[glance_image['name']] = glance_image
 310
 311         # add new images
 312         new_image_names = set(glance_images_dict.keys()).difference(images_dict.keys())
 313         for name in new_image_names:
 314             image = Image(image_id=glance_images_dict[name]['id'],
 315                           name=glance_images_dict[name]['name'],
 316                           disk_format=glance_images_dict[name]['disk_format'],
 317                           container_format=glance_images_dict[name]['container_format'])
 318             image.save()
 319
 320         # remove old images
 321         old_image_names = set(images_dict.keys()).difference(glance_images_dict.keys())
 322         Image.objects.filter(name__in=old_image_names).delete()
 323
 324