planetstack/openstack/driver.py

   1 import commands
   2 from planetstack.config import Config
   3 from openstack.client import OpenStackClient
   4
   5 class OpenStackDriver:
   6
   7     def __init__(self, config = None, client=None):
   8         if config:
   9             self.config = Config(config)
  10         else:
  11             self.config = Config()
  12
  13         self.admin_client = OpenStackClient()
  14         self.admin_user = self.admin_client.keystone.users.find(name=self.admin_client.keystone.username)
  15
  16         if client:
  17             self.shell = client
  18         else:
  19             self.shell = OpenStackClient()
  20
  21     def create_role(self, name):
  22         roles = self.shell.keystone.roles.findall(name=name)
  23         if not roles:
  24             role = self.shell.keystone.roles.create(name)
  25         else:
  26             role = roles[0]
  27         return role
  28
  29     def delete_role(self, filter):
  30         roles = self.shell.keystone.roles.findall(**filter)
  31         for role in roles:
  32             self.shell.keystone.roles.delete(role)
  33         return 1
  34
  35     def create_tenant(self, tenant_name, enabled, description):
  36         """Create keystone tenant. Suggested fields: name, description, enabled"""
  37         tenants = self.shell.keystone.tenants.findall(name=tenant_name)
  38         if not tenants:
  39             fields = {'tenant_name': tenant_name, 'enabled': enabled,
  40                       'description': description}
  41             tenant = self.shell.keystone.tenants.create(**fields)
  42         else:
  43             tenant = tenants[0]
  44
  45         # always give the admin user the admin role to any tenant created
  46         # by the driver.
  47         self.add_user_role(self.admin_user.id, tenant.id, 'admin')
  48         return tenant
  49
  50     def update_tenant(self, id, **kwds):
  51         return self.shell.keystone.tenants.update(id, **kwds)
  52
  53     def delete_tenant(self, id):
  54         ctx = self.shell.nova_db.ctx
  55         tenants = self.shell.keystone.tenants.findall(id=id)
  56         for tenant in tenants:
  57             # nova does not automatically delete the tenant's instances
  58             # so we manually delete instances before deleteing the tenant
  59             instances = self.shell.nova_db.instance_get_all_by_filters(ctx,
  60                        {'project_id': tenant.id}, 'id', 'asc')
  61             client = OpenStackClient(tenant=tenant.name)
  62             driver = OpenStackDriver(client=client)
  63             for instance in instances:
  64                 driver.destroy_instance(instance.id)
  65             self.shell.keystone.tenants.delete(tenant)
  66         return 1
  67
  68     def create_user(self, name, email, password, enabled):
  69         users = self.shell.keystone.users.findall(email=email)
  70         if not users:
  71             fields = {'name': name, 'email': email, 'password': password,
  72                       'enabled': enabled}
  73             user = self.shell.keystone.users.create(**fields)
  74         else:
  75             user = users[0]
  76         return user
  77
  78     def delete_user(self, id):
  79         users = self.shell.keystone.users.findall(id=id)
  80         for user in users:
  81             # delete users keys
  82             keys = self.shell.nova.keypairs.findall()
  83             for key in keys:
  84                 self.shell.nova.keypairs.delete(key)
  85             self.shell.keystone.users.delete(user)
  86         return 1
  87
  88     def add_user_role(self, kuser_id, tenant_id, role_name):
  89         user = self.shell.keystone.users.find(id=kuser_id)
  90         tenant = self.shell.keystone.tenants.find(id=tenant_id)
  91         role = self.shell.keystone.roles.find(name=role_name)
  92
  93         role_found = False
  94         user_roles = user.list_roles(tenant.id)
  95         for user_role in user_roles:
  96             if user_role.name == role.name:
  97                 role_found = True
  98         if not role_found:
  99             tenant.add_user(user, role)
 100
 101         return 1
 102
 103     def delete_user_role(self, kuser_id, tenant_id, role_name):
 104         user = self.shell.keystone.users.find(id=kuser_id)
 105         tenant = self.shell.keystone.tenants.find(id=tenant_id)
 106         role = self.shell.keystone.roles.find(name=role_name)
 107
 108         role_found = False
 109         user_roles = user.list_roles(tenant.id)
 110         for user_role in user_roles:
 111             if user_role.name == role.name:
 112                 role_found = True
 113         if role_found:
 114             tenant.remove_user(user, role)
 115
 116         return 1
 117
 118     def update_user(self, id, fields):
 119         if 'password' in fields:
 120             self.shell.keystone.users.update_password(id, fields['password'])
 121         if 'enabled' in fields:
 122             self.shell.keystone.users.update_enabled(id, fields['enabled'])
 123         return 1
 124
 125     def create_router(self, name, set_gateway=True):
 126         routers = self.shell.quantum.list_routers(name=name)['routers']
 127         if routers:
 128             router = routers[0]
 129         else:
 130             router = self.shell.quantum.create_router({'router': {'name': name}})['router']
 131         # add router to external network
 132         if set_gateway:
 133             nets = self.shell.quantum.list_networks()['networks']
 134             for net in nets:
 135                 if net['router:external'] == True:
 136                     self.shell.quantum.add_gateway_router(router['id'],
 137                                                           {'network_id': net['id']})
 138
 139         return router
 140
 141     def delete_router(self, id):
 142         routers = self.shell.quantum.list_routers(id=id)['routers']
 143         for router in routers:
 144             self.shell.quantum.delete_router(router['id'])
 145             # remove router form external network
 146             #nets = self.shell.quantum.list_networks()['networks']
 147             #for net in nets:
 148             #    if net['router:external'] == True:
 149             #        self.shell.quantum.remove_gateway_router(router['id'])
 150
 151     def add_router_interface(self, router_id, subnet_id):
 152         router = self.shell.quantum.show_router(router_id)['router']
 153         subnet = self.shell.quantum.show_subnet(subnet_id)['subnet']
 154         if router and subnet:
 155             self.shell.quantum.add_interface_router(router_id, {'subnet_id': subnet_id})
 156
 157     def delete_router_interface(self, router_id, subnet_id):
 158         router = self.shell.quantum.show_router(router_id)
 159         subnet = self.shell.quantum.show_subnet(subnet_id)
 160         if router and subnet:
 161             self.shell.quantum.remove_interface_router(router_id, {'subnet_id': subnet_id})
 162
 163     def create_network(self, name):
 164         nets = self.shell.quantum.list_networks(name=name)['networks']
 165         if nets:
 166             net = nets[0]
 167         else:
 168             net = self.shell.quantum.create_network({'network': {'name': name}})['network']
 169         return net
 170
 171     def delete_network(self, id):
 172         nets = self.shell.quantum.list_networks()['networks']
 173         for net in nets:
 174             if net['id'] == id:
 175                 # delete_all ports
 176                 self.delete_network_ports(net['id'])
 177                 # delete all subnets:
 178                 for subnet_id in net['subnets']:
 179                     self.delete_subnet(subnet_id)
 180                 self.shell.quantum.delete_network(net['id'])
 181         return 1
 182
 183     def delete_network_ports(self, network_id):
 184         ports = self.shell.quantum.list_ports()['ports']
 185         for port in ports:
 186             if port['network_id'] == network_id:
 187                 self.shell.quantum.delete_port(port['id'])
 188         return 1
 189
 190     def delete_subnet_ports(self, subnet_id):
 191         ports = self.shell.quantum.list_ports()['ports']
 192         for port in ports:
 193             delete = False
 194             for fixed_ip in port['fixed_ips']:
 195                 if fixed_ip['subnet_id'] == subnet_id:
 196                     delete=True
 197                     break
 198             if delete:
 199                 self.shell.quantum.delete_port(port['id'])
 200         return 1
 201
 202     def create_subnet(self, name, network_id, cidr_ip, ip_version, start, end):
 203         #nets = self.shell.quantum.list_networks(name=network_name)['networks']
 204         #if not nets:
 205         #    raise Exception, "No such network: %s" % network_name
 206         #net = nets[0]
 207
 208         subnet = None
 209         subnets = self.shell.quantum.list_subnets()['subnets']
 210         for snet in subnets:
 211             if snet['cidr'] == cidr_ip and snet['network_id'] == network_id:
 212                 subnet = snet
 213
 214         if not subnet:
 215             allocation_pools = [{'start': start, 'end': end}]
 216             subnet = {'subnet': {'name': name,
 217                                  'network_id': network_id,
 218                                  'ip_version': ip_version,
 219                                  'cidr': cidr_ip,
 220                                  'dns_nameservers': ['8.8.8.8', '8.8.4.4'],
 221                                  'allocation_pools': allocation_pools}}
 222             subnet = self.shell.quantum.create_subnet(subnet)['subnet']
 223             self.add_external_route(subnet)
 224         # TODO: Add route to external network
 225         # e.g. #  route add -net 10.0.3.0/24 dev br-ex gw 10.100.0.5
 226         return subnet
 227
 228     def update_subnet(self, id, fields):
 229         return self.shell.quantum.update_subnet(id, fields)
 230
 231     def delete_subnet(self, id):
 232         #return self.shell.quantum.delete_subnet(id=id)
 233         # inefficient but fault tolerant
 234         subnets = self.shell.quantum.list_subnets()['subnets']
 235         for subnet in subnets:
 236             if subnet['id'] == id:
 237                 self.delete_subnet_ports(subnet['id'])
 238                 self.shell.quantum.delete_subnet(id)
 239                 self.delete_external_route(subnet)
 240         return 1
 241
 242     def get_external_routes(self):
 243         status, output = commands.getstatusoutput('route')
 244         routes = output.split('\n')[3:]
 245         return routes
 246
 247     def add_external_route(self, subnet, routes=[]):
 248         if not routes:
 249             routes = self.get_external_routes()
 250
 251         ports = self.shell.quantum.list_ports()['ports']
 252
 253         gw_ip = subnet['gateway_ip']
 254         subnet_id = subnet['id']
 255
 256         # 1. Find the port associated with the subnet's gateway
 257         # 2. Find the router associated with that port
 258         # 3. Find the port associated with this router and on the external net
 259         # 4. Set up route to the subnet through the port from step 3
 260         ip_address = None
 261         for port in ports:
 262             for fixed_ip in port['fixed_ips']:
 263                 if fixed_ip['subnet_id'] == subnet_id and fixed_ip['ip_address'] == gw_ip:
 264                     gw_port = port
 265                     router_id = gw_port['device_id']
 266                     router = self.shell.quantum.show_router(router_id)['router']
 267                     if router and router.get('external_gateway_info'):
 268                         ext_net = router['external_gateway_info']['network_id']
 269                         for port in ports:
 270                             if port['device_id'] == router_id and port['network_id'] == ext_net:
 271                                 ip_address = port['fixed_ips'][0]['ip_address']
 272
 273         if ip_address:
 274             # check if external route already exists
 275             route_exists = False
 276             if routes:
 277                 for route in routes:
 278                     if subnet['cidr'] in route and ip_address in route:
 279                         route_exists = True
 280             if not route_exists:
 281                 cmd = "route add -net %s dev br-ex gw %s" % (subnet['cidr'], ip_address)
 282                 s, o = commands.getstatusoutput(cmd)
 283                 #print cmd, "\n", s, o
 284
 285         return 1
 286
 287     def delete_external_route(self, subnet):
 288         ports = self.shell.quantum.list_ports()['ports']
 289
 290         gw_ip = subnet['gateway_ip']
 291         subnet_id = subnet['id']
 292
 293         # 1. Find the port associated with the subnet's gateway
 294         # 2. Find the router associated with that port
 295         # 3. Find the port associated with this router and on the external net
 296         # 4. Set up route to the subnet through the port from step 3
 297         ip_address = None
 298         for port in ports:
 299             for fixed_ip in port['fixed_ips']:
 300                 if fixed_ip['subnet_id'] == subnet_id and fixed_ip['ip_address'] == gw_ip:
 301                     gw_port = port
 302                     router_id = gw_port['device_id']
 303                     router = self.shell.quantum.show_router(router_id)['router']
 304                     ext_net = router['external_gateway_info']['network_id']
 305                     for port in ports:
 306                         if port['device_id'] == router_id and port['network_id'] == ext_net:
 307                             ip_address = port['fixed_ips'][0]['ip_address']
 308
 309         if ip_address:
 310             cmd = "route delete -net %s" % (subnet['cidr'])
 311             commands.getstatusoutput(cmd)
 312
 313         return 1
 314
 315     def create_keypair(self, name, public_key):
 316         keys = self.shell.nova.keypairs.findall(name=name)
 317         if keys:
 318             key = keys[0]
 319             # update key
 320             if key.public_key != public_key:
 321                 self.delete_keypair(key.id)
 322                 key = self.shell.nova.keypairs.create(name=name, public_key=public_key)
 323         else:
 324             key = self.shell.nova.keypairs.create(name=name, public_key=public_key)
 325         return key
 326
 327     def delete_keypair(self, id):
 328         keys = self.shell.nova.keypairs.findall(id=id)
 329         for key in keys:
 330             self.shell.nova.keypairs.delete(key)
 331         return 1
 332
 333     def spawn_instance(self, name, key_name=None, hostname=None, image_id=None, security_group=None, pubkeys=[]):
 334         flavor_name = self.config.nova_default_flavor
 335         flavor = self.shell.nova.flavors.find(name=flavor_name)
 336         #if not image:
 337         #    image = self.config.nova_default_imave
 338         if not security_group:
 339             security_group = self.config.nova_default_security_group
 340
 341         files = {}
 342         if pubkeys:
 343             files['/root/.ssh/authorized_keys'] = "\n".join(pubkeys)
 344
 345         hints = {}
 346         availability_zone = None
 347         if hostname:
 348             availability_zone = 'nova:%s' % hostname
 349         server = self.shell.nova.servers.create(
 350                                             name=name,
 351                                             key_name = key_name,
 352                                             flavor=flavor.id,
 353                                             image=image_id,
 354                                             security_group = security_group,
 355                                             files=files,
 356                                             scheduler_hints=hints,
 357                                             availability_zone=availability_zone)
 358         return server
 359
 360     def destroy_instance(self, id):
 361         servers = self.shell.nova.servers.findall(id=id)
 362         for server in servers:
 363             self.shell.nova.servers.delete(server)
 364
 365     def update_instance_metadata(self, id, metadata):
 366         servers = self.shell.nova.servers.findall(id=id)
 367         for server in servers:
 368             self.shell.nova.servers.set_meta(server, metadata)
 369             # note: set_meta() returns a broken Server() object. Don't try to
 370             # print it in the shell or it will fail in __repr__.
 371
 372     def delete_instance_metadata(self, id, metadata):
 373         # note: metadata is a dict. Only the keys matter, not the values.
 374         servers = self.shell.nova.servers.findall(id=id)
 375         for server in servers:
 376             self.shell.nova.servers.delete_meta(server, metadata)
 377