1 from mininet
.link
import Link
3 from resources
import *
4 from docker
import DockerClient
9 import ip_handler
as IP
12 LOG
= logging
.getLogger("api.openstack.compute")
15 class HeatApiStackInvalidException(Exception):
17 Exception thrown when a submitted stack is invalid.
20 def __init__(self
, value
):
24 return repr(self
.value
)
27 class OpenstackCompute(object):
29 This class is a datacenter specific compute object that tracks all containers that are running in a datacenter,
30 as well as networks and configured ports.
31 It has some stack dependet logic and can check if a received stack is valid.
33 It also handles start and stop of containers.
39 self
.computeUnits
= dict()
45 self
.port_pairs
= dict()
46 self
.port_pair_groups
= dict()
47 self
.flow_classifiers
= dict()
48 self
.port_chains
= dict()
49 self
.compute_nets
= dict()
50 self
.dcli
= DockerClient(base_url
='unix://var/run/docker.sock')
55 Updates the known images. Asks the docker daemon for a list of all known images and returns
58 :return: Returns the new image dictionary.
61 for image
in self
.dcli
.images
.list():
62 if len(image
.tags
) > 0:
64 t
= t
.replace(":latest", "") # only use short tag names for OSM compatibility
65 if t
not in self
._images
:
66 self
._images
[t
] = Image(t
)
69 def add_stack(self
, stack
):
71 Adds a new stack to the compute node.
73 :param stack: Stack dictionary.
74 :type stack: :class:`heat.resources.stack`
76 if not self
.check_stack(stack
):
77 self
.clean_broken_stack(stack
)
78 raise HeatApiStackInvalidException("Stack did not pass validity checks")
79 self
.stacks
[stack
.id] = stack
81 def clean_broken_stack(self
, stack
):
82 for port
in stack
.ports
.values():
83 if port
.id in self
.ports
:
84 del self
.ports
[port
.id]
85 for server
in stack
.servers
.values():
86 if server
.id in self
.computeUnits
:
87 del self
.computeUnits
[server
.id]
88 for net
in stack
.nets
.values():
89 if net
.id in self
.nets
:
92 def check_stack(self
, stack
):
94 Checks all dependencies of all servers, ports and routers and their most important parameters.
96 :param stack: A reference of the stack that should be checked.
97 :type stack: :class:`heat.resources.stack`
98 :return: * *True*: If the stack is completely fine.
103 for server
in stack
.servers
.values():
104 for port_name
in server
.port_names
:
105 if port_name
not in stack
.ports
:
106 LOG
.warning("Server %s of stack %s has a port named %s that is not known." %
107 (server
.name
, stack
.stack_name
, port_name
))
108 everything_ok
= False
109 if server
.image
is None:
110 LOG
.warning("Server %s holds no image." % (server
.name
))
111 everything_ok
= False
112 if server
.command
is None:
113 LOG
.warning("Server %s holds no command." % (server
.name
))
114 everything_ok
= False
115 for port
in stack
.ports
.values():
116 if port
.net_name
not in stack
.nets
:
117 LOG
.warning("Port %s of stack %s has a network named %s that is not known." %
118 (port
.name
, stack
.stack_name
, port
.net_name
))
119 everything_ok
= False
120 if port
.intf_name
is None:
121 LOG
.warning("Port %s has no interface name." % (port
.name
))
122 everything_ok
= False
123 if port
.ip_address
is None:
124 LOG
.warning("Port %s has no IP address." % (port
.name
))
125 everything_ok
= False
126 for router
in stack
.routers
.values():
127 for subnet_name
in router
.subnet_names
:
129 for net
in stack
.nets
.values():
130 if net
.subnet_name
== subnet_name
:
134 LOG
.warning("Router %s of stack %s has a network named %s that is not known." %
135 (router
.name
, stack
.stack_name
, subnet_name
))
136 everything_ok
= False
139 def add_flavor(self
, name
, cpu
, memory
, memory_unit
, storage
, storage_unit
):
141 Adds a flavor to the stack.
143 :param name: Specifies the name of the flavor.
148 :type memory: ``str``
150 :type memory_unit: ``str``
152 :type storage: ``str``
154 :type storage_unit: ``str``
156 flavor
= InstanceFlavor(name
, cpu
, memory
, memory_unit
, storage
, storage_unit
)
157 self
.flavors
[flavor
.name
] = flavor
160 def deploy_stack(self
, stackid
):
162 Deploys the stack and starts the emulation.
164 :param stackid: An UUID str of the stack
165 :type stackid: ``str``
166 :return: * *False*: If the Datacenter is None
173 stack
= self
.stacks
[stackid
]
174 self
.update_compute_dicts(stack
)
176 # Create the networks first
177 for server
in stack
.servers
.values():
178 self
._start
_compute
(server
)
181 def delete_stack(self
, stack_id
):
183 Delete a stack and all its components.
185 :param stack_id: An UUID str of the stack
186 :type stack_id: ``str``
187 :return: * *False*: If the Datacenter is None
194 # Stop all servers and their links of this stack
195 for server
in self
.stacks
[stack_id
].servers
.values():
196 self
.stop_compute(server
)
197 self
.delete_server(server
)
198 for net
in self
.stacks
[stack_id
].nets
.values():
199 self
.delete_network(net
.id)
200 for port
in self
.stacks
[stack_id
].ports
.values():
201 self
.delete_port(port
.id)
203 del self
.stacks
[stack_id
]
206 def update_stack(self
, old_stack_id
, new_stack
):
208 Determines differences within the old and the new stack and deletes, create or changes only parts that
209 differ between the two stacks.
211 :param old_stack_id: The ID of the old stack.
212 :type old_stack_id: ``str``
213 :param new_stack: A reference of the new stack.
214 :type new_stack: :class:`heat.resources.stack`
215 :return: * *True*: if the old stack could be updated to the new stack without any error.
219 LOG
.debug("updating stack {} with new_stack {}".format(old_stack_id
, new_stack
))
220 if old_stack_id
not in self
.stacks
:
222 old_stack
= self
.stacks
[old_stack_id
]
225 for server
in old_stack
.servers
.values():
226 if server
.name
in new_stack
.servers
:
227 new_stack
.servers
[server
.name
].id = server
.id
228 for net
in old_stack
.nets
.values():
229 if net
.name
in new_stack
.nets
:
230 new_stack
.nets
[net
.name
].id = net
.id
231 for subnet
in new_stack
.nets
.values():
232 if subnet
.subnet_name
== net
.subnet_name
:
233 subnet
.subnet_id
= net
.subnet_id
235 for port
in old_stack
.ports
.values():
236 if port
.name
in new_stack
.ports
:
237 new_stack
.ports
[port
.name
].id = port
.id
238 for router
in old_stack
.routers
.values():
239 if router
.name
in new_stack
.routers
:
240 new_stack
.routers
[router
.name
].id = router
.id
242 # Update the compute dicts to now contain the new_stack components
243 self
.update_compute_dicts(new_stack
)
245 self
.update_ip_addresses(old_stack
, new_stack
)
247 # Update all interface names - after each port has the correct UUID!!
248 for port
in new_stack
.ports
.values():
249 port
.create_intf_name()
251 if not self
.check_stack(new_stack
):
254 # Remove unnecessary networks
255 for net
in old_stack
.nets
.values():
256 if not net
.name
in new_stack
.nets
:
257 self
.delete_network(net
.id)
259 # Remove all unnecessary servers
260 for server
in old_stack
.servers
.values():
261 if server
.name
in new_stack
.servers
:
262 if not server
.compare_attributes(new_stack
.servers
[server
.name
]):
263 self
.stop_compute(server
)
265 # Delete unused and changed links
266 for port_name
in server
.port_names
:
267 if port_name
in old_stack
.ports
and port_name
in new_stack
.ports
:
268 if not old_stack
.ports
.get(port_name
) == new_stack
.ports
.get(port_name
):
269 my_links
= self
.dc
.net
.links
270 for link
in my_links
:
271 if str(link
.intf1
) == old_stack
.ports
[port_name
].intf_name
and \
272 str(link
.intf1
.ip
) == \
273 old_stack
.ports
[port_name
].ip_address
.split('/')[0]:
274 self
._remove
_link
(server
.name
, link
)
277 self
._add
_link
(server
.name
,
278 new_stack
.ports
[port_name
].ip_address
,
279 new_stack
.ports
[port_name
].intf_name
,
280 new_stack
.ports
[port_name
].net_name
)
283 my_links
= self
.dc
.net
.links
284 for link
in my_links
:
285 if str(link
.intf1
) == old_stack
.ports
[port_name
].intf_name
and \
286 str(link
.intf1
.ip
) == old_stack
.ports
[port_name
].ip_address
.split('/')[0]:
287 self
._remove
_link
(server
.name
, link
)
291 for port_name
in new_stack
.servers
[server
.name
].port_names
:
292 if port_name
not in server
.port_names
:
293 self
._add
_link
(server
.name
,
294 new_stack
.ports
[port_name
].ip_address
,
295 new_stack
.ports
[port_name
].intf_name
,
296 new_stack
.ports
[port_name
].net_name
)
298 self
.stop_compute(server
)
300 # Start all new servers
301 for server
in new_stack
.servers
.values():
302 if server
.name
not in self
.dc
.containers
:
303 self
._start
_compute
(server
)
305 server
.emulator_compute
= self
.dc
.containers
.get(server
.name
)
307 del self
.stacks
[old_stack_id
]
308 self
.stacks
[new_stack
.id] = new_stack
311 def update_ip_addresses(self
, old_stack
, new_stack
):
313 Updates the subnet and the port IP addresses - which should always be in this order!
315 :param old_stack: The currently running stack
316 :type old_stack: :class:`heat.resources.stack`
317 :param new_stack: The new created stack
318 :type new_stack: :class:`heat.resources.stack`
320 self
.update_subnet_cidr(old_stack
, new_stack
)
321 self
.update_port_addresses(old_stack
, new_stack
)
323 def update_port_addresses(self
, old_stack
, new_stack
):
325 Updates the port IP addresses. First resets all issued addresses. Then get all IP addresses from the old
326 stack and sets them to the same ports in the new stack. Finally all new or changed instances will get new
329 :param old_stack: The currently running stack
330 :type old_stack: :class:`heat.resources.stack`
331 :param new_stack: The new created stack
332 :type new_stack: :class:`heat.resources.stack`
334 for net
in new_stack
.nets
.values():
335 net
.reset_issued_ip_addresses()
337 for old_port
in old_stack
.ports
.values():
338 for port
in new_stack
.ports
.values():
339 if port
.compare_attributes(old_port
):
340 for net
in new_stack
.nets
.values():
341 if net
.name
== port
.net_name
:
342 if net
.assign_ip_address(old_port
.ip_address
, port
.name
):
343 port
.ip_address
= old_port
.ip_address
344 port
.mac_address
= old_port
.mac_address
346 port
.ip_address
= net
.get_new_ip_address(port
.name
)
348 for port
in new_stack
.ports
.values():
349 for net
in new_stack
.nets
.values():
350 if port
.net_name
== net
.name
and not net
.is_my_ip(port
.ip_address
, port
.name
):
351 port
.ip_address
= net
.get_new_ip_address(port
.name
)
353 def update_subnet_cidr(self
, old_stack
, new_stack
):
355 Updates the subnet IP addresses. If the new stack contains subnets from the old stack it will take those
356 IP addresses. Otherwise it will create new IP addresses for the subnet.
358 :param old_stack: The currently running stack
359 :type old_stack: :class:`heat.resources.stack`
360 :param new_stack: The new created stack
361 :type new_stack: :class:`heat.resources.stack`
363 for old_subnet
in old_stack
.nets
.values():
364 IP
.free_cidr(old_subnet
.get_cidr(), old_subnet
.subnet_id
)
366 for subnet
in new_stack
.nets
.values():
368 for old_subnet
in old_stack
.nets
.values():
369 if subnet
.subnet_name
== old_subnet
.subnet_name
:
370 if IP
.assign_cidr(old_subnet
.get_cidr(), subnet
.subnet_id
):
371 subnet
.set_cidr(old_subnet
.get_cidr())
373 for subnet
in new_stack
.nets
.values():
374 if IP
.is_cidr_issued(subnet
.get_cidr()):
377 cird
= IP
.get_new_cidr(subnet
.subnet_id
)
378 subnet
.set_cidr(cird
)
381 def update_compute_dicts(self
, stack
):
383 Update and add all stack components tho the compute dictionaries.
385 :param stack: A stack reference, to get all required components.
386 :type stack: :class:`heat.resources.stack`
388 for server
in stack
.servers
.values():
389 self
.computeUnits
[server
.id] = server
390 if isinstance(server
.flavor
, dict):
391 self
.add_flavor(server
.flavor
['flavorName'],
392 server
.flavor
['vcpu'],
393 server
.flavor
['ram'], 'MB',
394 server
.flavor
['storage'], 'GB')
395 server
.flavor
= server
.flavor
['flavorName']
396 for router
in stack
.routers
.values():
397 self
.routers
[router
.id] = router
398 for net
in stack
.nets
.values():
399 self
.nets
[net
.id] = net
400 for port
in stack
.ports
.values():
401 self
.ports
[port
.id] = port
403 def _start_compute(self
, server
):
405 Starts a new compute object (docker container) inside the emulator.
406 Should only be called by stack modifications and not directly.
408 :param server: Specifies the compute resource.
409 :type server: :class:`heat.resources.server`
411 LOG
.debug("Starting new compute resources %s" % server
.name
)
413 network_dict
= dict()
415 for port_name
in server
.port_names
:
416 network_dict
= dict()
417 port
= self
.find_port_by_name_or_id(port_name
)
419 network_dict
['id'] = port
.intf_name
420 network_dict
['ip'] = port
.ip_address
421 network_dict
[network_dict
['id']] = self
.find_network_by_name_or_id(port
.net_name
).name
422 network
.append(network_dict
)
423 # default network dict
425 network_dict
['id'] = server
.name
+ "-eth0"
426 network_dict
[network_dict
['id']] = network_dict
['id']
427 network
.append(network_dict
)
429 self
.compute_nets
[server
.name
] = network
430 LOG
.debug("Network dict: {}".format(network
))
431 c
= self
.dc
.startCompute(server
.name
, image
=server
.image
, command
=server
.command
,
432 network
=network
, flavor_name
=server
.flavor
,
433 properties
=server
.properties
)
434 server
.emulator_compute
= c
436 for intf
in c
.intfs
.values():
437 for port_name
in server
.port_names
:
438 port
= self
.find_port_by_name_or_id(port_name
)
440 if intf
.name
== port
.intf_name
:
441 # wait up to one second for the intf to come up
442 self
.timeout_sleep(intf
.isUp
, 1)
443 if port
.mac_address
is not None:
444 intf
.setMAC(port
.mac_address
)
446 port
.mac_address
= intf
.MAC()
448 # Start the real emulator command now as specified in the dockerfile
450 config
= c
.dcinfo
.get("Config", dict())
451 env
= config
.get("Env", list())
453 if "SON_EMU_CMD=" in env_var
:
454 cmd
= str(env_var
.split("=")[1])
455 server
.son_emu_command
= cmd
456 # execute command in new thread to ensure that GK is not blocked by VNF
457 t
= threading
.Thread(target
=c
.cmdPrint
, args
=(cmd
,))
461 def stop_compute(self
, server
):
463 Determines which links should be removed before removing the server itself.
465 :param server: The server that should be removed
466 :type server: ``heat.resources.server``
468 LOG
.debug("Stopping container %s with full name %s" % (server
.name
, server
.full_name
))
470 for port_name
in server
.port_names
:
471 link_names
.append(self
.find_port_by_name_or_id(port_name
).intf_name
)
472 my_links
= self
.dc
.net
.links
473 for link
in my_links
:
474 if str(link
.intf1
) in link_names
:
475 # Remove all self created links that connect the server to the main switch
476 self
._remove
_link
(server
.name
, link
)
478 # Stop the server and the remaining connection to the datacenter switch
479 self
.dc
.stopCompute(server
.name
)
480 # Only now delete all its ports and the server itself
481 for port_name
in server
.port_names
:
482 self
.delete_port(port_name
)
483 self
.delete_server(server
)
485 def find_server_by_name_or_id(self
, name_or_id
):
487 Tries to find the server by ID and if this does not succeed then tries to find it via name.
489 :param name_or_id: UUID or name of the server.
490 :type name_or_id: ``str``
491 :return: Returns the server reference if it was found or None
492 :rtype: :class:`heat.resources.server`
494 if name_or_id
in self
.computeUnits
:
495 return self
.computeUnits
[name_or_id
]
497 if self
._shorten
_server
_name
(name_or_id
) in self
.computeUnits
:
498 return self
.computeUnits
[name_or_id
]
500 for server
in self
.computeUnits
.values():
501 if server
.name
== name_or_id
or server
.template_name
== name_or_id
or server
.full_name
== name_or_id
:
503 if (server
.name
== self
._shorten
_server
_name
(name_or_id
)
504 or server
.template_name
== self
._shorten
_server
_name
(name_or_id
)
505 or server
.full_name
== self
._shorten
_server
_name
(name_or_id
)):
509 def create_server(self
, name
, stack_operation
=False):
511 Creates a server with the specified name. Raises an exception when a server with the given name already
514 :param name: Name of the new server.
516 :param stack_operation: Allows the heat parser to create modules without adapting the current emulation.
517 :type stack_operation: ``bool``
518 :return: Returns the created server.
519 :rtype: :class:`heat.resources.server`
521 if self
.find_server_by_name_or_id(name
) is not None and not stack_operation
:
522 raise Exception("Server with name %s already exists." % name
)
523 safe_name
= self
._shorten
_server
_name
(name
)
524 server
= Server(safe_name
)
525 server
.id = str(uuid
.uuid4())
526 if not stack_operation
:
527 self
.computeUnits
[server
.id] = server
530 def _shorten_server_name(self
, name
, char_limit
=9):
532 Docker does not like too long instance names.
533 This function provides a shorter name if needed
535 # fix for NetSoft'17 demo
536 # TODO remove this after the demo
537 if "http" in name
or "apache" in name
:
539 elif "l4fw" in name
or "socat" in name
:
541 elif "proxy" in name
or "squid" in name
:
543 # this is a ugly fix, but we cannot do better for now (interface names are to long)
544 if len(name
) > char_limit
:
545 LOG
.info("Long server name: {}".format(name
))
546 # construct a short name
547 name
= name
.strip("-_ .")
548 name
= name
.replace("_vnf", "")
552 name
= name
[-char_limit
:].strip("-_ .")
553 LOG
.info("Short server name: {}".format(name
))
557 def delete_server(self
, server
):
559 Deletes the given server from the stack dictionary and the computeUnits dictionary.
561 :param server: Reference of the server that should be deleted.
562 :type server: :class:`heat.resources.server`
563 :return: * *False*: If the server name is not in the correct format ('datacentername_stackname_servername') \
564 or when no stack with the correct stackname was found.
570 name_parts
= server
.name
.split('_')
571 if len(name_parts
) < 3:
574 for stack
in self
.stacks
.values():
575 if stack
.stack_name
== name_parts
[1]:
576 stack
.servers
.pop(server
.id, None)
577 if self
.computeUnits
.pop(server
.id, None) is None:
581 def find_network_by_name_or_id(self
, name_or_id
):
583 Tries to find the network by ID and if this does not succeed then tries to find it via name.
585 :param name_or_id: UUID or name of the network.
586 :type name_or_id: ``str``
587 :return: Returns the network reference if it was found or None
588 :rtype: :class:`heat.resources.net`
590 if name_or_id
in self
.nets
:
591 return self
.nets
[name_or_id
]
592 for net
in self
.nets
.values():
593 if net
.name
== name_or_id
:
598 def create_network(self
, name
, stack_operation
=False):
600 Creates a new network with the given name. Raises an exception when a network with the given name already
603 :param name: Name of the new network.
605 :param stack_operation: Allows the heat parser to create modules without adapting the current emulation.
606 :type stack_operation: ``bool``
607 :return: :class:`heat.resources.net`
609 LOG
.debug("Creating network with name %s" % name
)
610 if self
.find_network_by_name_or_id(name
) is not None and not stack_operation
:
611 LOG
.warning("Creating network with name %s failed, as it already exists" % name
)
612 raise Exception("Network with name %s already exists." % name
)
614 network
.id = str(uuid
.uuid4())
615 if not stack_operation
:
616 self
.nets
[network
.id] = network
619 def delete_network(self
, name_or_id
):
621 Deletes the given network.
623 :param name_or_id: Name or UUID of the network.
624 :type name_or_id: ``str``
626 net
= self
.find_network_by_name_or_id(name_or_id
)
628 raise Exception("Network with name or id %s does not exists." % name_or_id
)
630 for stack
in self
.stacks
.values():
631 stack
.nets
.pop(net
.name
, None)
633 self
.nets
.pop(net
.id, None)
635 def create_port(self
, name
, stack_operation
=False):
637 Creates a new port with the given name. Raises an exception when a port with the given name already
640 :param name: Name of the new port.
642 :param stack_operation: Allows the heat parser to create modules without adapting the current emulation.
643 :type stack_operation: ``bool``
644 :return: Returns the created port.
645 :rtype: :class:`heat.resources.port`
647 port
= self
.find_port_by_name_or_id(name
)
648 if port
is not None and not stack_operation
:
649 LOG
.warning("Creating port with name %s failed, as it already exists" % name
)
650 raise Exception("Port with name %s already exists." % name
)
651 LOG
.debug("Creating port with name %s" % name
)
653 if not stack_operation
:
654 self
.ports
[port
.id] = port
655 port
.create_intf_name()
658 def find_port_by_name_or_id(self
, name_or_id
):
660 Tries to find the port by ID and if this does not succeed then tries to find it via name.
662 :param name_or_id: UUID or name of the network.
663 :type name_or_id: ``str``
664 :return: Returns the port reference if it was found or None
665 :rtype: :class:`heat.resources.port`
667 if name_or_id
in self
.ports
:
668 return self
.ports
[name_or_id
]
669 for port
in self
.ports
.values():
670 if port
.name
== name_or_id
or port
.template_name
== name_or_id
:
675 def delete_port(self
, name_or_id
):
677 Deletes the given port. Raises an exception when the port was not found!
679 :param name_or_id: UUID or name of the port.
680 :type name_or_id: ``str``
682 port
= self
.find_port_by_name_or_id(name_or_id
)
684 raise Exception("Port with name or id %s does not exists." % name_or_id
)
686 my_links
= self
.dc
.net
.links
687 for link
in my_links
:
688 if str(link
.intf1
) == port
.intf_name
and \
689 str(link
.intf1
.ip
) == port
.ip_address
.split('/')[0]:
690 self
._remove
_link
(link
.intf1
.node
.name
, link
)
693 self
.ports
.pop(port
.id, None)
694 for stack
in self
.stacks
.values():
695 stack
.ports
.pop(port
.name
, None)
697 def create_port_pair(self
, name
, stack_operation
=False):
699 Creates a new port pair with the given name. Raises an exception when a port pair with the given name already
702 :param name: Name of the new port pair.
704 :param stack_operation: Allows the heat parser to create modules without adapting the current emulation.
705 :type stack_operation: ``bool``
706 :return: Returns the created port pair.
707 :rtype: :class:`openstack.resources.port_pair`
709 port_pair
= self
.find_port_pair_by_name_or_id(name
)
710 if port_pair
is not None and not stack_operation
:
711 logging
.warning("Creating port pair with name %s failed, as it already exists" % name
)
712 raise Exception("Port pair with name %s already exists." % name
)
713 logging
.debug("Creating port pair with name %s" % name
)
714 port_pair
= PortPair(name
)
715 if not stack_operation
:
716 self
.port_pairs
[port_pair
.id] = port_pair
719 def find_port_pair_by_name_or_id(self
, name_or_id
):
721 Tries to find the port pair by ID and if this does not succeed then tries to find it via name.
723 :param name_or_id: UUID or name of the port pair.
724 :type name_or_id: ``str``
725 :return: Returns the port pair reference if it was found or None
726 :rtype: :class:`openstack.resources.port_pair`
728 if name_or_id
in self
.port_pairs
:
729 return self
.port_pairs
[name_or_id
]
730 for port_pair
in self
.port_pairs
.values():
731 if port_pair
.name
== name_or_id
:
736 def delete_port_pair(self
, name_or_id
):
738 Deletes the given port pair. Raises an exception when the port pair was not found!
740 :param name_or_id: UUID or name of the port pair.
741 :type name_or_id: ``str``
743 port_pair
= self
.find_port_pair_by_name_or_id(name_or_id
)
744 if port_pair
is None:
745 raise Exception("Port pair with name or id %s does not exists." % name_or_id
)
747 self
.port_pairs
.pop(port_pair
.id, None)
749 def create_port_pair_group(self
, name
, stack_operation
=False):
751 Creates a new port pair group with the given name. Raises an exception when a port pair group
752 with the given name already exists!
754 :param name: Name of the new port pair group.
756 :param stack_operation: Allows the heat parser to create modules without adapting the current emulation.
757 :type stack_operation: ``bool``
758 :return: Returns the created port pair group .
759 :rtype: :class:`openstack.resources.port_pair_group`
761 port_pair_group
= self
.find_port_pair_group_by_name_or_id(name
)
762 if port_pair_group
is not None and not stack_operation
:
763 logging
.warning("Creating port pair group with name %s failed, as it already exists" % name
)
764 raise Exception("Port pair group with name %s already exists." % name
)
765 logging
.debug("Creating port pair group with name %s" % name
)
766 port_pair_group
= PortPairGroup(name
)
767 if not stack_operation
:
768 self
.port_pair_groups
[port_pair_group
.id] = port_pair_group
769 return port_pair_group
771 def find_port_pair_group_by_name_or_id(self
, name_or_id
):
773 Tries to find the port pair group by ID and if this does not succeed then tries to find it via name.
775 :param name_or_id: UUID or name of the port pair group.
776 :type name_or_id: ``str``
777 :return: Returns the port pair group reference if it was found or None
778 :rtype: :class:`openstack.resources.port_pair_group`
780 if name_or_id
in self
.port_pair_groups
:
781 return self
.port_pair_groups
[name_or_id
]
782 for port_pair_group
in self
.port_pair_groups
.values():
783 if port_pair_group
.name
== name_or_id
:
784 return port_pair_group
788 def delete_port_pair_group(self
, name_or_id
):
790 Deletes the given port pair group. Raises an exception when the port pair group was not found!
792 :param name_or_id: UUID or name of the port pair group.
793 :type name_or_id: ``str``
795 port_pair_group
= self
.find_port_pair_group_by_name_or_id(name_or_id
)
796 if port_pair_group
is None:
797 raise Exception("Port pair with name or id %s does not exists." % name_or_id
)
799 self
.port_pair_groups
.pop(port_pair_group
.id, None)
801 def create_port_chain(self
, name
, stack_operation
=False):
803 Creates a new port chain with the given name. Raises an exception when a port chain with the given name already
806 :param name: Name of the new port chain
808 :param stack_operation: Allows the heat parser to create modules without adapting the current emulation.
809 :type stack_operation: ``bool``
810 :return: Returns the created port chain.
811 :rtype: :class:`openstack.resources.port_chain.PortChain`
813 port_chain
= self
.find_port_chain_by_name_or_id(name
)
814 if port_chain
is not None and not stack_operation
:
815 logging
.warning("Creating port chain with name %s failed, as it already exists" % name
)
816 raise Exception("Port chain with name %s already exists." % name
)
817 logging
.debug("Creating port chain with name %s" % name
)
818 port_chain
= PortChain(name
)
819 if not stack_operation
:
820 self
.port_chains
[port_chain
.id] = port_chain
823 def find_port_chain_by_name_or_id(self
, name_or_id
):
825 Tries to find the port chain by ID and if this does not succeed then tries to find it via name.
827 :param name_or_id: UUID or name of the port chain.
828 :type name_or_id: ``str``
829 :return: Returns the port chain reference if it was found or None
830 :rtype: :class:`openstack.resources.port_chain.PortChain`
832 if name_or_id
in self
.port_chains
:
833 return self
.port_chains
[name_or_id
]
834 for port_chain
in self
.port_chains
.values():
835 if port_chain
.name
== name_or_id
:
839 def delete_port_chain(self
, name_or_id
):
841 Deletes the given port chain. Raises an exception when the port chain was not found!
843 :param name_or_id: UUID or name of the port chain.
844 :type name_or_id: ``str``
846 port_chain
= self
.find_port_chain_by_name_or_id(name_or_id
)
847 port_chain
.uninstall(self
)
848 if port_chain
is None:
849 raise Exception("Port chain with name or id %s does not exists." % name_or_id
)
851 self
.port_chains
.pop(port_chain
.id, None)
853 def create_flow_classifier(self
, name
, stack_operation
=False):
855 Creates a new flow classifier with the given name. Raises an exception when a flow classifier with the given name already
858 :param name: Name of the new flow classifier.
860 :param stack_operation: Allows the heat parser to create modules without adapting the current emulation.
861 :type stack_operation: ``bool``
862 :return: Returns the created flow classifier.
863 :rtype: :class:`openstack.resources.flow_classifier`
865 flow_classifier
= self
.find_flow_classifier_by_name_or_id(name
)
866 if flow_classifier
is not None and not stack_operation
:
867 logging
.warning("Creating flow classifier with name %s failed, as it already exists" % name
)
868 raise Exception("Flow classifier with name %s already exists." % name
)
869 logging
.debug("Creating flow classifier with name %s" % name
)
870 flow_classifier
= FlowClassifier(name
)
871 if not stack_operation
:
872 self
.flow_classifiers
[flow_classifier
.id] = flow_classifier
873 return flow_classifier
875 def find_flow_classifier_by_name_or_id(self
, name_or_id
):
877 Tries to find the flow classifier by ID and if this does not succeed then tries to find it via name.
879 :param name_or_id: UUID or name of the flow classifier.
880 :type name_or_id: ``str``
881 :return: Returns the flow classifier reference if it was found or None
882 :rtype: :class:`openstack.resources.flow_classifier`
884 if name_or_id
in self
.flow_classifiers
:
885 return self
.flow_classifiers
[name_or_id
]
886 for flow_classifier
in self
.flow_classifiers
.values():
887 if flow_classifier
.name
== name_or_id
:
888 return flow_classifier
892 def delete_flow_classifier(self
, name_or_id
):
894 Deletes the given flow classifier. Raises an exception when the flow classifier was not found!
896 :param name_or_id: UUID or name of the flow classifier.
897 :type name_or_id: ``str``
899 flow_classifier
= self
.find_flow_classifier_by_name_or_id(name_or_id
)
900 if flow_classifier
is None:
901 raise Exception("Flow classifier with name or id %s does not exists." % name_or_id
)
903 self
.flow_classifiers
.pop(flow_classifier
.id, None)
905 def _add_link(self
, node_name
, ip_address
, link_name
, net_name
):
907 Adds a new link between datacenter switch and the node with the given name.
909 :param node_name: Name of the required node.
910 :type node_name: ``str``
911 :param ip_address: IP-Address of the node.
912 :type ip_address: ``str``
913 :param link_name: Link name.
914 :type link_name: ``str``
915 :param net_name: Network name.
916 :type net_name: ``str``
918 node
= self
.dc
.net
.get(node_name
)
919 params
= {'params1': {'ip': ip_address
,
921 link_name
: net_name
},
922 'intfName1': link_name
,
924 link
= self
.dc
.net
.addLink(node
, self
.dc
.switch
, **params
)
925 OpenstackCompute
.timeout_sleep(link
.intf1
.isUp
, 1)
927 def _remove_link(self
, server_name
, link
):
929 Removes a link between server and datacenter switch.
931 :param server_name: Specifies the server where the link starts.
932 :type server_name: ``str``
933 :param link: A reference of the link which should be removed.
934 :type link: :class:`mininet.link`
936 self
.dc
.switch
.detach(link
.intf2
)
937 del self
.dc
.switch
.intfs
[self
.dc
.switch
.ports
[link
.intf2
]]
938 del self
.dc
.switch
.ports
[link
.intf2
]
939 del self
.dc
.switch
.nameToIntf
[link
.intf2
.name
]
940 self
.dc
.net
.removeLink(link
=link
)
941 for intf_key
in self
.dc
.net
[server_name
].intfs
.keys():
942 if self
.dc
.net
[server_name
].intfs
[intf_key
].link
== link
:
943 self
.dc
.net
[server_name
].intfs
[intf_key
].delete()
944 del self
.dc
.net
[server_name
].intfs
[intf_key
]
947 def timeout_sleep(function
, max_sleep
):
949 This function will execute a function all 0.1 seconds until it successfully returns.
950 Will return after `max_sleep` seconds if not successful.
952 :param function: The function to execute. Should return true if done.
953 :type function: ``function``
954 :param max_sleep: Max seconds to sleep. 1 equals 1 second.
955 :type max_sleep: ``float``
957 current_time
= time
.time()
958 stop_time
= current_time
+ max_sleep
959 while not function() and current_time
< stop_time
:
960 current_time
= time
.time()