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