2 Copyright (c) 2015 SONATA-NFV and Paderborn University
5 Licensed under the Apache License, Version 2.0 (the "License");
6 you may not use this file except in compliance with the License.
7 You may obtain a copy of the License at
9 http://www.apache.org/licenses/LICENSE-2.0
11 Unless required by applicable law or agreed to in writing, software
12 distributed under the License is distributed on an "AS IS" BASIS,
13 WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
14 See the License for the specific language governing permissions and
15 limitations under the License.
17 Neither the name of the SONATA-NFV [, ANY ADDITIONAL AFFILIATION]
18 nor the names of its contributors may be used to endorse or promote
19 products derived from this software without specific prior written
22 This work has been performed in the framework of the SONATA project,
23 funded by the European Commission under Grant number 671517 through
24 the Horizon 2020 and 5G-PPP programmes. The authors would like to
25 acknowledge the contributions of their colleagues of the SONATA
26 partner consortium (www.sonata-nfv.eu).
29 This module implements a simple REST API that behaves like SONATA's gatekeeper.
31 It is only used to support the development of SONATA's SDK tools and to demonstrate
32 the year 1 version of the emulator until the integration with WP4's orchestrator is done.
42 from docker
import Client
as DockerClient
43 from flask
import Flask
, request
44 import flask_restful
as fr
45 from collections
import defaultdict
49 LOG
= logging
.getLogger("sonata-dummy-gatekeeper")
50 LOG
.setLevel(logging
.DEBUG
)
51 logging
.getLogger("werkzeug").setLevel(logging
.WARNING
)
53 GK_STORAGE
= "/tmp/son-dummy-gk/"
54 UPLOAD_FOLDER
= os
.path
.join(GK_STORAGE
, "uploads/")
55 CATALOG_FOLDER
= os
.path
.join(GK_STORAGE
, "catalog/")
57 # Enable Dockerfile build functionality
58 BUILD_DOCKERFILE
= False
60 # flag to indicate that we run without the emulator (only the bare API for integration testing)
61 GK_STANDALONE_MODE
= False
63 # should a new version of an image be pulled even if its available
66 # Automatically deploy SAPs (endpoints) of the service as new containers
67 # Attention: This is not a configuration switch but a global variable! Don't change its default value.
70 # flag to indicate if we use bidirectional forwarding rules in the automatic chaining process
71 BIDIRECTIONAL_CHAIN
= False
73 class Gatekeeper(object):
76 self
.services
= dict()
79 self
.vnf_counter
= 0 # used to generate short names for VNFs (Mininet limitation)
80 LOG
.info("Create SONATA dummy gatekeeper.")
82 def register_service_package(self
, service_uuid
, service
):
84 register new service package
88 self
.services
[service_uuid
] = service
89 # lets perform all steps needed to onboard the service
92 def get_next_vnf_name(self
):
94 return "vnf%d" % self
.vnf_counter
97 class Service(object):
99 This class represents a NS uploaded as a *.son package to the
101 Can have multiple running instances of this service.
108 self
.uuid
= service_uuid
109 self
.package_file_hash
= package_file_hash
110 self
.package_file_path
= package_file_path
111 self
.package_content_path
= os
.path
.join(CATALOG_FOLDER
, "services/%s" % self
.uuid
)
115 self
.local_docker_files
= dict()
116 self
.remote_docker_image_urls
= dict()
117 self
.instances
= dict()
118 self
.vnf_name2docker_name
= dict()
119 self
.sap_identifiers
= set()
120 # lets generate a set of subnet configurations used for e-line chaining setup
121 self
.eline_subnets_src
= generate_subnet_strings(50, start
=200, subnet_size
=24, ip
=1)
122 self
.eline_subnets_dst
= generate_subnet_strings(50, start
=200, subnet_size
=24, ip
=2)
126 Do all steps to prepare this service to be instantiated
129 # 1. extract the contents of the package and store them in our catalog
130 self
._unpack
_service
_package
()
131 # 2. read in all descriptor files
132 self
._load
_package
_descriptor
()
137 # 3. prepare container images (e.g. download or build Dockerfile)
139 self
._load
_docker
_files
()
140 self
._build
_images
_from
_dockerfiles
()
142 self
._load
_docker
_urls
()
143 self
._pull
_predefined
_dockerimages
()
144 LOG
.info("On-boarded service: %r" % self
.manifest
.get("name"))
146 def start_service(self
):
148 This methods creates and starts a new service instance.
149 It computes placements, iterates over all VNFDs, and starts
150 each VNFD as a Docker container in the data center selected
151 by the placement algorithm.
154 LOG
.info("Starting service %r" % self
.uuid
)
156 # 1. each service instance gets a new uuid to identify it
157 instance_uuid
= str(uuid
.uuid4())
158 # build a instances dict (a bit like a NSR :))
159 self
.instances
[instance_uuid
] = dict()
160 self
.instances
[instance_uuid
]["vnf_instances"] = list()
162 # 2. Configure the chaining of the network functions (currently only E-Line and E-LAN links supported)
163 vnf_id2vnf_name
= defaultdict(lambda: "NotExistingNode",
164 reduce(lambda x
, y
: dict(x
, **y
),
165 map(lambda d
: {d
["vnf_id"]: d
["vnf_name"]},
166 self
.nsd
["network_functions"])))
168 # 3. compute placement of this service instance (adds DC names to VNFDs)
169 if not GK_STANDALONE_MODE
:
170 #self._calculate_placement(FirstDcPlacement)
171 self
._calculate
_placement
(RoundRobinDcPlacement
)
172 # iterate over all vnfds that we have to start
173 for vnfd
in self
.vnfds
.itervalues():
175 if not GK_STANDALONE_MODE
:
176 vnfi
= self
._start
_vnfd
(vnfd
)
177 self
.instances
[instance_uuid
]["vnf_instances"].append(vnfi
)
179 vlinks
= self
.nsd
["virtual_links"]
180 fwd_links
= self
.nsd
["forwarding_graphs"][0]["constituent_virtual_links"]
181 eline_fwd_links
= [l
for l
in vlinks
if (l
["id"] in fwd_links
) and (l
["connectivity_type"] == "E-Line")]
182 elan_fwd_links
= [l
for l
in vlinks
if (l
["id"] in fwd_links
) and (l
["connectivity_type"] == "E-LAN")]
184 GK
.net
.deployed_elines
.extend(eline_fwd_links
)
185 GK
.net
.deployed_elans
.extend(elan_fwd_links
)
187 # 4a. deploy E-Line links
188 # cookie is used as identifier for the flowrules installed by the dummygatekeeper
189 # eg. different services get a unique cookie for their flowrules
191 for link
in eline_fwd_links
:
192 src_id
, src_if_name
= link
["connection_points_reference"][0].split(":")
193 dst_id
, dst_if_name
= link
["connection_points_reference"][1].split(":")
195 # check if there is a SAP in the link
196 if src_id
in self
.sap_identifiers
:
197 src_docker_name
= "{0}_{1}".format(src_id
, src_if_name
)
198 src_id
= src_docker_name
200 src_docker_name
= src_id
202 if dst_id
in self
.sap_identifiers
:
203 dst_docker_name
= "{0}_{1}".format(dst_id
, dst_if_name
)
204 dst_id
= dst_docker_name
206 dst_docker_name
= dst_id
208 src_name
= vnf_id2vnf_name
[src_id
]
209 dst_name
= vnf_id2vnf_name
[dst_id
]
212 "Setting up E-Line link. %s(%s:%s) -> %s(%s:%s)" % (
213 src_name
, src_id
, src_if_name
, dst_name
, dst_id
, dst_if_name
))
215 if (src_name
in self
.vnfds
) and (dst_name
in self
.vnfds
):
216 network
= self
.vnfds
[src_name
].get("dc").net
# there should be a cleaner way to find the DCNetwork
217 LOG
.debug(src_docker_name
)
218 ret
= network
.setChain(
219 src_docker_name
, dst_docker_name
,
220 vnf_src_interface
=src_if_name
, vnf_dst_interface
=dst_if_name
,
221 bidirectional
=BIDIRECTIONAL_CHAIN
, cmd
="add-flow", cookie
=cookie
, priority
=10)
223 # re-configure the VNFs IP assignment and ensure that a new subnet is used for each E-Link
224 src_vnfi
= self
._get
_vnf
_instance
(instance_uuid
, src_name
)
225 if src_vnfi
is not None:
226 self
._vnf
_reconfigure
_network
(src_vnfi
, src_if_name
, self
.eline_subnets_src
.pop(0))
227 dst_vnfi
= self
._get
_vnf
_instance
(instance_uuid
, dst_name
)
228 if dst_vnfi
is not None:
229 self
._vnf
_reconfigure
_network
(dst_vnfi
, dst_if_name
, self
.eline_subnets_dst
.pop(0))
231 # 4b. deploy E-LAN links
233 for link
in elan_fwd_links
:
237 # generate lan ip address
239 for intf
in link
["connection_points_reference"]:
240 ip_address
= generate_lan_string("10.0", base
, subnet_size
=24, ip
=ip
)
241 vnf_id
, intf_name
= intf
.split(":")
242 if vnf_id
in self
.sap_identifiers
:
243 src_docker_name
= "{0}_{1}".format(vnf_id
, intf_name
)
244 vnf_id
= src_docker_name
246 src_docker_name
= vnf_id
247 vnf_name
= vnf_id2vnf_name
[vnf_id
]
249 "Setting up E-LAN link. %s(%s:%s) -> %s" % (
250 vnf_name
, vnf_id
, intf_name
, ip_address
))
252 if vnf_name
in self
.vnfds
:
253 # re-configure the VNFs IP assignment and ensure that a new subnet is used for each E-LAN
254 # E-LAN relies on the learning switch capability of Ryu which has to be turned on in the topology
255 # (DCNetwork(controller=RemoteController, enable_learning=True)), so no explicit chaining is necessary.
256 vnfi
= self
._get
_vnf
_instance
(instance_uuid
, vnf_name
)
258 self
._vnf
_reconfigure
_network
(vnfi
, intf_name
, ip_address
)
259 # increase for the next ip address on this E-LAN
262 # add this vnf and interface to the E-LAN for tagging
263 network
= self
.vnfds
[vnf_name
].get("dc").net
# there should be a cleaner way to find the DCNetwork
264 elan_vnf_list
.append({'name':src_docker_name
,'interface':intf_name
})
267 # install the VLAN tags for this E-LAN
268 network
.setLAN(elan_vnf_list
)
269 # increase the base ip address for the next E-LAN
272 # 5. run the emulator specific entrypoint scripts in the VNFIs of this service instance
273 self
._trigger
_emulator
_start
_scripts
_in
_vnfis
(self
.instances
[instance_uuid
]["vnf_instances"])
275 LOG
.info("Service started. Instance id: %r" % instance_uuid
)
278 def _start_vnfd(self
, vnfd
):
280 Start a single VNFD of this service
281 :param vnfd: vnfd descriptor dict
284 # iterate over all deployment units within each VNFDs
285 for u
in vnfd
.get("virtual_deployment_units"):
286 # 1. get the name of the docker image to start and the assigned DC
287 vnf_name
= vnfd
.get("name")
288 if vnf_name
not in self
.remote_docker_image_urls
:
289 raise Exception("No image name for %r found. Abort." % vnf_name
)
290 docker_name
= self
.remote_docker_image_urls
.get(vnf_name
)
291 target_dc
= vnfd
.get("dc")
292 # 2. perform some checks to ensure we can start the container
293 assert(docker_name
is not None)
294 assert(target_dc
is not None)
295 if not self
._check
_docker
_image
_exists
(docker_name
):
296 raise Exception("Docker image %r not found. Abort." % docker_name
)
297 # 3. do the dc.startCompute(name="foobar") call to run the container
298 # TODO consider flavors, and other annotations
299 intfs
= vnfd
.get("connection_points")
301 # TODO: get all vnf id's from the nsd for this vnfd and use those as dockername
302 # use the vnf_id in the nsd as docker name
303 # so deployed containers can be easily mapped back to the nsd
304 vnf_name2id
= defaultdict(lambda: "NotExistingNode",
305 reduce(lambda x
, y
: dict(x
, **y
),
306 map(lambda d
: {d
["vnf_name"]: d
["vnf_id"]},
307 self
.nsd
["network_functions"])))
308 self
.vnf_name2docker_name
[vnf_name
] = vnf_name2id
[vnf_name
]
309 # self.vnf_name2docker_name[vnf_name] = GK.get_next_vnf_name()
311 LOG
.info("Starting %r as %r in DC %r" % (vnf_name
, self
.vnf_name2docker_name
[vnf_name
], vnfd
.get("dc")))
312 LOG
.debug("Interfaces for %r: %r" % (vnf_name
, intfs
))
313 vnfi
= target_dc
.startCompute(self
.vnf_name2docker_name
[vnf_name
], network
=intfs
, image
=docker_name
, flavor_name
="small")
316 def _get_vnf_instance(self
, instance_uuid
, name
):
318 Returns the Docker object for the given VNF name (or Docker name).
319 :param instance_uuid: UUID of the service instance to search in.
320 :param name: VNF name or Docker name. We are fuzzy here.
324 if name
in self
.vnf_name2docker_name
:
325 dn
= self
.vnf_name2docker_name
[name
]
326 for vnfi
in self
.instances
[instance_uuid
]["vnf_instances"]:
329 LOG
.warning("No container with name: %r found.")
333 def _vnf_reconfigure_network(vnfi
, if_name
, net_str
):
335 Reconfigure the network configuration of a specific interface
336 of a running container.
337 :param vnfi: container instacne
338 :param if_name: interface name
339 :param net_str: network configuration string, e.g., 1.2.3.4/24
342 intf
= vnfi
.intf(intf
=if_name
)
345 LOG
.debug("Reconfigured network of %s:%s to %r" % (vnfi
.name
, if_name
, net_str
))
347 LOG
.warning("Interface not found: %s:%s. Network reconfiguration skipped." % (vnfi
.name
, if_name
))
350 def _trigger_emulator_start_scripts_in_vnfis(self
, vnfi_list
):
351 for vnfi
in vnfi_list
:
352 config
= vnfi
.dcinfo
.get("Config", dict())
353 env
= config
.get("Env", list())
355 if "SON_EMU_CMD=" in env_var
:
356 cmd
= str(env_var
.split("=")[1])
357 LOG
.info("Executing entry point script in %r: %r" % (vnfi
.name
, cmd
))
358 # execute command in new thread to ensure that GK is not blocked by VNF
359 t
= threading
.Thread(target
=vnfi
.cmdPrint
, args
=(cmd
,))
363 def _unpack_service_package(self
):
365 unzip *.son file and store contents in CATALOG_FOLDER/services/<service_uuid>/
367 LOG
.info("Unzipping: %r" % self
.package_file_path
)
368 with zipfile
.ZipFile(self
.package_file_path
, "r") as z
:
369 z
.extractall(self
.package_content_path
)
372 def _load_package_descriptor(self
):
374 Load the main package descriptor YAML and keep it as dict.
377 self
.manifest
= load_yaml(
379 self
.package_content_path
, "META-INF/MANIFEST.MF"))
383 Load the entry NSD YAML and keep it as dict.
386 if "entry_service_template" in self
.manifest
:
387 nsd_path
= os
.path
.join(
388 self
.package_content_path
,
389 make_relative_path(self
.manifest
.get("entry_service_template")))
390 self
.nsd
= load_yaml(nsd_path
)
391 GK
.net
.deployed_nsds
.append(self
.nsd
)
392 LOG
.debug("Loaded NSD: %r" % self
.nsd
.get("name"))
394 def _load_vnfd(self
):
396 Load all VNFD YAML files referenced in MANIFEST.MF and keep them in dict.
399 if "package_content" in self
.manifest
:
400 for pc
in self
.manifest
.get("package_content"):
401 if pc
.get("content-type") == "application/sonata.function_descriptor":
402 vnfd_path
= os
.path
.join(
403 self
.package_content_path
,
404 make_relative_path(pc
.get("name")))
405 vnfd
= load_yaml(vnfd_path
)
406 self
.vnfds
[vnfd
.get("name")] = vnfd
407 LOG
.debug("Loaded VNFD: %r" % vnfd
.get("name"))
409 def _load_saps(self
):
410 # Each Service Access Point (connection_point) in the nsd is getting its own container
411 SAPs
= [p
["id"] for p
in self
.nsd
["connection_points"] if p
["type"] == "interface"]
413 # endpoints needed in this service
414 sap_vnf_id
, sap_vnf_interface
= sap
.split(':')
415 # set of the connection_point ids found in the nsd (in the examples this is 'ns')
416 self
.sap_identifiers
.add(sap_vnf_id
)
418 sap_docker_name
= "%s_%s" % (sap_vnf_id
, sap_vnf_interface
)
420 # add SAP to self.vnfds
421 sapfile
= pkg_resources
.resource_filename(__name__
, "sap_vnfd.yml")
422 sap_vnfd
= load_yaml(sapfile
)
423 sap_vnfd
["connection_points"][0]["id"] = sap_vnf_interface
424 sap_vnfd
["name"] = sap_docker_name
425 self
.vnfds
[sap_docker_name
] = sap_vnfd
426 # add SAP vnf to list in the NSD so it is deployed later on
427 # each SAP get a unique VNFD and vnf_id in the NSD
428 self
.nsd
["network_functions"].append({"vnf_id": sap_docker_name
, "vnf_name": sap_docker_name
})
429 LOG
.debug("Loaded SAP: %r" % sap_vnfd
.get("name"))
431 def _load_docker_files(self
):
433 Get all paths to Dockerfiles from VNFDs and store them in dict.
436 for k
, v
in self
.vnfds
.iteritems():
437 for vu
in v
.get("virtual_deployment_units"):
438 if vu
.get("vm_image_format") == "docker":
439 vm_image
= vu
.get("vm_image")
440 docker_path
= os
.path
.join(
441 self
.package_content_path
,
442 make_relative_path(vm_image
))
443 self
.local_docker_files
[k
] = docker_path
444 LOG
.debug("Found Dockerfile (%r): %r" % (k
, docker_path
))
446 def _load_docker_urls(self
):
448 Get all URLs to pre-build docker images in some repo.
451 for k
, v
in self
.vnfds
.iteritems():
452 for vu
in v
.get("virtual_deployment_units"):
453 if vu
.get("vm_image_format") == "docker":
454 url
= vu
.get("vm_image")
456 url
= url
.replace("http://", "")
457 self
.remote_docker_image_urls
[k
] = url
458 LOG
.debug("Found Docker image URL (%r): %r" % (k
, self
.remote_docker_image_urls
[k
]))
460 def _build_images_from_dockerfiles(self
):
462 Build Docker images for each local Dockerfile found in the package: self.local_docker_files
464 if GK_STANDALONE_MODE
:
465 return # do not build anything in standalone mode
467 LOG
.info("Building %d Docker images (this may take several minutes) ..." % len(self
.local_docker_files
))
468 for k
, v
in self
.local_docker_files
.iteritems():
469 for line
in dc
.build(path
=v
.replace("Dockerfile", ""), tag
=k
, rm
=False, nocache
=False):
470 LOG
.debug("DOCKER BUILD: %s" % line
)
471 LOG
.info("Docker image created: %s" % k
)
473 def _pull_predefined_dockerimages(self
):
475 If the package contains URLs to pre-build Docker images, we download them with this method.
478 for url
in self
.remote_docker_image_urls
.itervalues():
479 if not FORCE_PULL
: # only pull if not present (speedup for development)
480 if len(dc
.images(name
=url
)) > 0:
481 LOG
.debug("Image %r present. Skipping pull." % url
)
483 LOG
.info("Pulling image: %r" % url
)
485 insecure_registry
=True)
487 def _check_docker_image_exists(self
, image_name
):
489 Query the docker service and check if the given image exists
490 :param image_name: name of the docker image
493 return len(DockerClient().images(image_name
)) > 0
495 def _calculate_placement(self
, algorithm
):
497 Do placement by adding the a field "dc" to
498 each VNFD that points to one of our
499 data center objects known to the gatekeeper.
501 assert(len(self
.vnfds
) > 0)
502 assert(len(GK
.dcs
) > 0)
503 # instantiate algorithm an place
505 p
.place(self
.nsd
, self
.vnfds
, GK
.dcs
)
506 LOG
.info("Using placement algorithm: %r" % p
.__class
__.__name
__)
507 # lets print the placement result
508 for name
, vnfd
in self
.vnfds
.iteritems():
509 LOG
.info("Placed VNF %r on DC %r" % (name
, str(vnfd
.get("dc"))))
513 Some (simple) placement algorithms
517 class FirstDcPlacement(object):
519 Placement: Always use one and the same data center from the GK.dcs dict.
521 def place(self
, nsd
, vnfds
, dcs
):
522 for name
, vnfd
in vnfds
.iteritems():
523 vnfd
["dc"] = list(dcs
.itervalues())[0]
526 class RoundRobinDcPlacement(object):
528 Placement: Distribute VNFs across all available DCs in a round robin fashion.
530 def place(self
, nsd
, vnfds
, dcs
):
532 dcs_list
= list(dcs
.itervalues())
533 for name
, vnfd
in vnfds
.iteritems():
534 vnfd
["dc"] = dcs_list
[c
% len(dcs_list
)]
535 c
+= 1 # inc. c to use next DC
541 Resource definitions and API endpoints
545 class Packages(fr
.Resource
):
549 Upload a *.son service package to the dummy gatekeeper.
551 We expect request with a *.son file and store it in UPLOAD_FOLDER
557 # lets search for the package in the request
558 if "package" in request
.files
:
559 son_file
= request
.files
["package"]
560 # elif "file" in request.files:
561 # son_file = request.files["file"]
563 return {"service_uuid": None, "size": 0, "sha1": None, "error": "upload failed. file not found."}, 500
564 # generate a uuid to reference this package
565 service_uuid
= str(uuid
.uuid4())
566 file_hash
= hashlib
.sha1(str(son_file
)).hexdigest()
567 # ensure that upload folder exists
568 ensure_dir(UPLOAD_FOLDER
)
569 upload_path
= os
.path
.join(UPLOAD_FOLDER
, "%s.son" % service_uuid
)
570 # store *.son file to disk
571 son_file
.save(upload_path
)
572 size
= os
.path
.getsize(upload_path
)
573 # create a service object and register it
574 s
= Service(service_uuid
, file_hash
, upload_path
)
575 GK
.register_service_package(service_uuid
, s
)
576 # generate the JSON result
577 return {"service_uuid": service_uuid
, "size": size
, "sha1": file_hash
, "error": None}, 201
578 except Exception as ex
:
579 LOG
.exception("Service package upload failed:")
580 return {"service_uuid": None, "size": 0, "sha1": None, "error": "upload failed"}, 500
584 Return a list of UUID's of uploaded service packages.
587 LOG
.info("GET /packages")
588 return {"service_uuid_list": list(GK
.services
.iterkeys())}
591 class Instantiations(fr
.Resource
):
595 Instantiate a service specified by its UUID.
596 Will return a new UUID to identify the running service instance.
599 # try to extract the service uuid from the request
600 json_data
= request
.get_json(force
=True)
601 service_uuid
= json_data
.get("service_uuid")
603 # lets be a bit fuzzy here to make testing easier
604 if service_uuid
is None and len(GK
.services
) > 0:
605 # if we don't get a service uuid, we simple start the first service in the list
606 service_uuid
= list(GK
.services
.iterkeys())[0]
608 if service_uuid
in GK
.services
:
609 # ok, we have a service uuid, lets start the service
610 service_instance_uuid
= GK
.services
.get(service_uuid
).start_service()
611 return {"service_instance_uuid": service_instance_uuid
}
612 return "Service not found", 404
616 Returns a list of UUIDs containing all running services.
619 LOG
.info("GET /instantiations")
620 return {"service_instantiations_list": [
621 list(s
.instances
.iterkeys()) for s
in GK
.services
.itervalues()]}
624 # create a single, global GK object
627 app
= Flask(__name__
)
628 app
.config
['MAX_CONTENT_LENGTH'] = 512 * 1024 * 1024 # 512 MB max upload
631 api
.add_resource(Packages
, '/packages')
632 api
.add_resource(Instantiations
, '/instantiations')
635 def start_rest_api(host
, port
, datacenters
=dict()):
637 GK
.net
= get_dc_network()
638 # start the Flask server (not the best performance but ok for our use case)
642 use_reloader
=False # this is needed to run Flask in a non-main thread
646 def ensure_dir(name
):
647 if not os
.path
.exists(name
):
652 with
open(path
, "r") as f
:
655 except yaml
.YAMLError
as exc
:
656 LOG
.exception("YAML parse error")
661 def make_relative_path(path
):
662 if path
.startswith("file://"):
663 path
= path
.replace("file://", "", 1)
664 if path
.startswith("/"):
665 path
= path
.replace("/", "", 1)
669 def generate_lan_string(prefix
, base
, subnet_size
=24, ip
=0):
671 Helper to generate different network configuration strings.
673 r
= "%s.%d.%d/%d" % (prefix
, base
, ip
, subnet_size
)
677 def generate_subnet_strings(n
, start
=1, subnet_size
=24, ip
=0):
679 Helper to generate different network configuration strings.
682 for i
in range(start
, start
+ n
):
683 r
.append("%d.0.0.%d/%d" % (i
, ip
, subnet_size
))
686 def get_dc_network():
688 retrieve the DCnetwork where this dummygatekeeper (GK) connects to.
689 Assume at least 1 datacenter is connected to this GK, and that all datacenters belong to the same DCNetwork
692 assert (len(GK
.dcs
) > 0)
693 return GK
.dcs
.values()[0].net
695 if __name__
== '__main__':
697 Lets allow to run the API in standalone mode.
699 GK_STANDALONE_MODE
= True
700 logging
.getLogger("werkzeug").setLevel(logging
.INFO
)
701 start_rest_api("0.0.0.0", 8000)