-"""
-Copyright (c) 2015 SONATA-NFV and Paderborn University
-ALL RIGHTS RESERVED.
-
-Licensed under the Apache License, Version 2.0 (the "License");
-you may not use this file except in compliance with the License.
-You may obtain a copy of the License at
-
- http://www.apache.org/licenses/LICENSE-2.0
-
-Unless required by applicable law or agreed to in writing, software
-distributed under the License is distributed on an "AS IS" BASIS,
-WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-See the License for the specific language governing permissions and
-limitations under the License.
-
-Neither the name of the SONATA-NFV, Paderborn University
-nor the names of its contributors may be used to endorse or promote
-products derived from this software without specific prior written
-permission.
-
-This work has been performed in the framework of the SONATA project,
-funded by the European Commission under Grant number 671517 through
-the Horizon 2020 and 5G-PPP programmes. The authors would like to
-acknowledge the contributions of their colleagues of the SONATA
-partner consortium (www.sonata-nfv.eu).
-"""
-"""
-This module implements a simple REST API that behaves like SONATA's gatekeeper.
-
-It is only used to support the development of SONATA's SDK tools and to demonstrate
-the year 1 version of the emulator until the integration with WP4's orchestrator is done.
-"""
-
+# Copyright (c) 2015 SONATA-NFV and Paderborn University
+# ALL RIGHTS RESERVED.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+# http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+#
+# Neither the name of the SONATA-NFV, Paderborn University
+# nor the names of its contributors may be used to endorse or promote
+# products derived from this software without specific prior written
+# permission.
+#
+# This work has been performed in the framework of the SONATA project,
+# funded by the European Commission under Grant number 671517 through
+# the Horizon 2020 and 5G-PPP programmes. The authors would like to
+# acknowledge the contributions of their colleagues of the SONATA
+# partner consortium (www.sonata-nfv.eu).
import logging
import os
import uuid
import zipfile
import yaml
import threading
-from docker import DockerClient, APIClient
+from docker import DockerClient
from flask import Flask, request
import flask_restful as fr
from collections import defaultdict
import ipaddress
import copy
import time
+from functools import reduce
logging.basicConfig()
LOG = logging.getLogger("sonata-dummy-gatekeeper")
# Enable Dockerfile build functionality
BUILD_DOCKERFILE = False
-# flag to indicate that we run without the emulator (only the bare API for integration testing)
+# flag to indicate that we run without the emulator (only the bare API for
+# integration testing)
GK_STANDALONE_MODE = False
# should a new version of an image be pulled even if its available
FORCE_PULL = False
# Automatically deploy SAPs (endpoints) of the service as new containers
-# Attention: This is not a configuration switch but a global variable! Don't change its default value.
+# Attention: This is not a configuration switch but a global variable!
+# Don't change its default value.
DEPLOY_SAP = False
-# flag to indicate if we use bidirectional forwarding rules in the automatic chaining process
+# flag to indicate if we use bidirectional forwarding rules in the
+# automatic chaining process
BIDIRECTIONAL_CHAIN = False
-# override the management interfaces in the descriptors with default docker0 interfaces in the containers
+# override the management interfaces in the descriptors with default
+# docker0 interfaces in the containers
USE_DOCKER_MGMT = False
-# automatically deploy uploaded packages (no need to execute son-access deploy --latest separately)
+# automatically deploy uploaded packages (no need to execute son-access
+# deploy --latest separately)
AUTO_DEPLOY = False
# and also automatically terminate any other running services
AUTO_DELETE = False
+
def generate_subnets(prefix, base, subnet_size=50, mask=24):
# Generate a list of ipaddress in subnets
r = list()
subnet = "{0}.{1}.0/{2}".format(prefix, net, mask)
r.append(ipaddress.ip_network(unicode(subnet)))
return r
+
+
# private subnet definitions for the generated interfaces
# 10.10.xxx.0/24
SAP_SUBNETS = generate_subnets('10.10', 0, subnet_size=50, mask=30)
ELINE_SUBNETS = generate_subnets('10.30', 0, subnet_size=50, mask=30)
# path to the VNFD for the SAP VNF that is deployed as internal SAP point
-SAP_VNFD=None
+SAP_VNFD = None
# Time in seconds to wait for vnf stop scripts to execute fully
VNF_STOP_WAIT_TIME = 5
+
class Gatekeeper(object):
def __init__(self):
self.services = dict()
self.dcs = dict()
self.net = None
- self.vnf_counter = 0 # used to generate short names for VNFs (Mininet limitation)
+ # used to generate short names for VNFs (Mininet limitation)
+ self.vnf_counter = 0
LOG.info("Create SONATA dummy gatekeeper.")
def register_service_package(self, service_uuid, service):
self.uuid = service_uuid
self.package_file_hash = package_file_hash
self.package_file_path = package_file_path
- self.package_content_path = os.path.join(CATALOG_FOLDER, "services/%s" % self.uuid)
+ self.package_content_path = os.path.join(
+ CATALOG_FOLDER, "services/%s" % self.uuid)
self.manifest = None
self.nsd = None
self.vnfds = dict()
self.instances[instance_uuid] = dict()
self.instances[instance_uuid]["vnf_instances"] = list()
- # 2. compute placement of this service instance (adds DC names to VNFDs)
+ # 2. compute placement of this service instance (adds DC names to
+ # VNFDs)
if not GK_STANDALONE_MODE:
- #self._calculate_placement(FirstDcPlacement)
+ # self._calculate_placement(FirstDcPlacement)
self._calculate_placement(RoundRobinDcPlacementWithSAPs)
# 3. start all vnfds that we have in the service (except SAPs)
for vnf_id in self.vnfds:
if "virtual_links" in self.nsd and "forwarding_graphs" in self.nsd:
vlinks = self.nsd["virtual_links"]
# constituent virtual links are not checked
- #fwd_links = self.nsd["forwarding_graphs"][0]["constituent_virtual_links"]
- eline_fwd_links = [l for l in vlinks if (l["connectivity_type"] == "E-Line")]
- elan_fwd_links = [l for l in vlinks if (l["connectivity_type"] == "E-LAN")]
+ # fwd_links = self.nsd["forwarding_graphs"][0]["constituent_virtual_links"]
+ eline_fwd_links = [l for l in vlinks if (
+ l["connectivity_type"] == "E-Line")]
+ elan_fwd_links = [l for l in vlinks if (
+ l["connectivity_type"] == "E-LAN")]
GK.net.deployed_elines.extend(eline_fwd_links)
GK.net.deployed_elans.extend(elan_fwd_links)
# 5b. deploy E-LAN links
self._connect_elans(elan_fwd_links, instance_uuid)
- # 6. run the emulator specific entrypoint scripts in the VNFIs of this service instance
- self._trigger_emulator_start_scripts_in_vnfis(self.instances[instance_uuid]["vnf_instances"])
+ # 6. run the emulator specific entrypoint scripts in the VNFIs of this
+ # service instance
+ self._trigger_emulator_start_scripts_in_vnfis(
+ self.instances[instance_uuid]["vnf_instances"])
LOG.info("Service started. Instance id: %r" % instance_uuid)
return instance_uuid
# instance_uuid = str(self.uuid.uuid4())
vnf_instances = self.instances[instance_uuid]["vnf_instances"]
- # trigger stop skripts in vnf instances and wait a few seconds for completion
+ # trigger stop skripts in vnf instances and wait a few seconds for
+ # completion
self._trigger_emulator_stop_scripts_in_vnfis(vnf_instances)
time.sleep(VNF_STOP_WAIT_TIME)
ext_sap = self.saps[sap_name]
target_dc = ext_sap.get("dc")
target_dc.removeExternalSAP(sap_name)
- LOG.info("Stopping the SAP instance: %r in DC %r" % (sap_name, target_dc))
+ LOG.info("Stopping the SAP instance: %r in DC %r" %
+ (sap_name, target_dc))
if not GK_STANDALONE_MODE:
# remove placement?
assert(docker_name is not None)
assert(target_dc is not None)
if not self._check_docker_image_exists(docker_name):
- raise Exception("Docker image %r not found. Abort." % docker_name)
+ raise Exception(
+ "Docker image %r not found. Abort." % docker_name)
# 3. get the resource limits
res_req = u.get("resource_requirements")
if cpu_list is None:
cpu_list = res_req.get("cpu").get("vcpus")
if cpu_list is None:
- cpu_list="1"
+ cpu_list = "1"
cpu_bw = res_req.get("cpu").get("cpu_bw")
if not cpu_bw:
- cpu_bw=1
+ cpu_bw = 1
mem_num = str(res_req.get("memory").get("size"))
- if len(mem_num)==0:
- mem_num="2"
+ if len(mem_num) == 0:
+ mem_num = "2"
mem_unit = str(res_req.get("memory").get("size_unit"))
- if str(mem_unit)==0:
- mem_unit="GB"
+ if str(mem_unit) == 0:
+ mem_unit = "GB"
mem_limit = float(mem_num)
- if mem_unit=="GB":
- mem_limit=mem_limit*1024*1024*1024
- elif mem_unit=="MB":
- mem_limit=mem_limit*1024*1024
- elif mem_unit=="KB":
- mem_limit=mem_limit*1024
+ if mem_unit == "GB":
+ mem_limit = mem_limit * 1024 * 1024 * 1024
+ elif mem_unit == "MB":
+ mem_limit = mem_limit * 1024 * 1024
+ elif mem_unit == "KB":
+ mem_limit = mem_limit * 1024
mem_lim = int(mem_limit)
- cpu_period, cpu_quota = self._calculate_cpu_cfs_values(float(cpu_bw))
+ cpu_period, cpu_quota = self._calculate_cpu_cfs_values(
+ float(cpu_bw))
- # check if we need to deploy the management ports (defined as type:management both on in the vnfd and nsd)
+ # check if we need to deploy the management ports (defined as
+ # type:management both on in the vnfd and nsd)
intfs = vnfd.get("connection_points", [])
mgmt_intf_names = []
if USE_DOCKER_MGMT:
- mgmt_intfs = [vnf_id + ':' + intf['id'] for intf in intfs if intf.get('type') == 'management']
- # check if any of these management interfaces are used in a management-type network in the nsd
+ mgmt_intfs = [vnf_id + ':' + intf['id']
+ for intf in intfs if intf.get('type') == 'management']
+ # check if any of these management interfaces are used in a
+ # management-type network in the nsd
for nsd_intf_name in mgmt_intfs:
- vlinks = [ l["connection_points_reference"] for l in self.nsd.get("virtual_links", [])]
+ vlinks = [l["connection_points_reference"]
+ for l in self.nsd.get("virtual_links", [])]
for link in vlinks:
- if nsd_intf_name in link and self.check_mgmt_interface(link):
- # this is indeed a management interface and can be skipped
- vnf_id, vnf_interface, vnf_sap_docker_name = parse_interface(nsd_intf_name)
- found_interfaces = [intf for intf in intfs if intf.get('id') == vnf_interface]
+ if nsd_intf_name in link and self.check_mgmt_interface(
+ link):
+ # this is indeed a management interface and can be
+ # skipped
+ vnf_id, vnf_interface, vnf_sap_docker_name = parse_interface(
+ nsd_intf_name)
+ found_interfaces = [
+ intf for intf in intfs if intf.get('id') == vnf_interface]
intfs.remove(found_interfaces[0])
mgmt_intf_names.append(vnf_interface)
# 4. generate the volume paths for the docker container
- volumes=list()
+ volumes = list()
# a volume to extract log files
- docker_log_path = "/tmp/results/%s/%s"%(self.uuid,vnf_id)
- LOG.debug("LOG path for vnf %s is %s."%(vnf_id,docker_log_path))
+ docker_log_path = "/tmp/results/%s/%s" % (self.uuid, vnf_id)
+ LOG.debug("LOG path for vnf %s is %s." % (vnf_id, docker_log_path))
if not os.path.exists(docker_log_path):
- LOG.debug("Creating folder %s"%docker_log_path)
+ LOG.debug("Creating folder %s" % docker_log_path)
os.makedirs(docker_log_path)
- volumes.append(docker_log_path+":/mnt/share/")
-
+ volumes.append(docker_log_path + ":/mnt/share/")
# 5. do the dc.startCompute(name="foobar") call to run the container
# TODO consider flavors, and other annotations
# TODO: get all vnf id's from the nsd for this vnfd and use those as dockername
# use the vnf_id in the nsd as docker name
# so deployed containers can be easily mapped back to the nsd
- LOG.info("Starting %r as %r in DC %r" % (vnf_name, vnf_id, vnfd.get("dc")))
+ LOG.info("Starting %r as %r in DC %r" %
+ (vnf_name, vnf_id, vnfd.get("dc")))
LOG.debug("Interfaces for %r: %r" % (vnf_id, intfs))
vnfi = target_dc.startCompute(
- vnf_id,
- network=intfs,
- image=docker_name,
- flavor_name="small",
- cpu_quota=cpu_quota,
- cpu_period=cpu_period,
- cpuset=cpu_list,
- mem_limit=mem_lim,
- volumes=volumes,
- type=kwargs.get('type','docker'))
-
- # rename the docker0 interfaces (eth0) to the management port name defined in the VNFD
+ vnf_id,
+ network=intfs,
+ image=docker_name,
+ flavor_name="small",
+ cpu_quota=cpu_quota,
+ cpu_period=cpu_period,
+ cpuset=cpu_list,
+ mem_limit=mem_lim,
+ volumes=volumes,
+ type=kwargs.get('type', 'docker'))
+
+ # rename the docker0 interfaces (eth0) to the management port name
+ # defined in the VNFD
if USE_DOCKER_MGMT:
for intf_name in mgmt_intf_names:
- self._vnf_reconfigure_network(vnfi, 'eth0', new_name=intf_name)
+ self._vnf_reconfigure_network(
+ vnfi, 'eth0', new_name=intf_name)
return vnfi
dc = vnfi.datacenter
# stop the vnfi
- LOG.info("Stopping the vnf instance contained in %r in DC %r" % (status["name"], dc))
+ LOG.info("Stopping the vnf instance contained in %r in DC %r" %
+ (status["name"], dc))
dc.stopCompute(status["name"])
def _get_vnf_instance(self, instance_uuid, vnf_id):
intf = vnfi.intf(intf=if_name)
if intf is not None:
intf.setIP(net_str)
- LOG.debug("Reconfigured network of %s:%s to %r" % (vnfi.name, if_name, net_str))
+ LOG.debug("Reconfigured network of %s:%s to %r" %
+ (vnfi.name, if_name, net_str))
else:
- LOG.warning("Interface not found: %s:%s. Network reconfiguration skipped." % (vnfi.name, if_name))
+ LOG.warning("Interface not found: %s:%s. Network reconfiguration skipped." % (
+ vnfi.name, if_name))
if new_name is not None:
vnfi.cmd('ip link set', if_name, 'down')
vnfi.cmd('ip link set', if_name, 'name', new_name)
vnfi.cmd('ip link set', new_name, 'up')
- LOG.debug("Reconfigured interface name of %s:%s to %s" % (vnfi.name, if_name, new_name))
-
-
+ LOG.debug("Reconfigured interface name of %s:%s to %s" %
+ (vnfi.name, if_name, new_name))
def _trigger_emulator_start_scripts_in_vnfis(self, vnfi_list):
for vnfi in vnfi_list:
env = config.get("Env", list())
for env_var in env:
var, cmd = map(str.strip, map(str, env_var.split('=', 1)))
- LOG.debug("%r = %r" % (var , cmd))
- if var=="SON_EMU_CMD":
- LOG.info("Executing entry point script in %r: %r" % (vnfi.name, cmd))
- # execute command in new thread to ensure that GK is not blocked by VNF
+ LOG.debug("%r = %r" % (var, cmd))
+ if var == "SON_EMU_CMD":
+ LOG.info("Executing entry point script in %r: %r" %
+ (vnfi.name, cmd))
+ # execute command in new thread to ensure that GK is not
+ # blocked by VNF
t = threading.Thread(target=vnfi.cmdPrint, args=(cmd,))
t.daemon = True
t.start()
env = config.get("Env", list())
for env_var in env:
var, cmd = map(str.strip, map(str, env_var.split('=', 1)))
- if var=="SON_EMU_CMD_STOP":
- LOG.info("Executing stop script in %r: %r" % (vnfi.name, cmd))
- # execute command in new thread to ensure that GK is not blocked by VNF
+ if var == "SON_EMU_CMD_STOP":
+ LOG.info("Executing stop script in %r: %r" %
+ (vnfi.name, cmd))
+ # execute command in new thread to ensure that GK is not
+ # blocked by VNF
t = threading.Thread(target=vnfi.cmdPrint, args=(cmd,))
t.daemon = True
t.start()
-
-
def _unpack_service_package(self):
"""
unzip *.son file and store contents in CATALOG_FOLDER/services/<service_uuid>/
with zipfile.ZipFile(self.package_file_path, "r") as z:
z.extractall(self.package_content_path)
-
def _load_package_descriptor(self):
"""
Load the main package descriptor YAML and keep it as dict.
GK.net.deployed_nsds.append(self.nsd)
# create dict to find the vnf_name for any vnf id
self.vnf_id2vnf_name = defaultdict(lambda: "NotExistingNode",
- reduce(lambda x, y: dict(x, **y),
+ reduce(lambda x, y: dict(x, **y),
map(lambda d: {d["vnf_id"]: d["vnf_name"]},
self.nsd["network_functions"])))
vnfd_set = dict()
if "package_content" in self.manifest:
for pc in self.manifest.get("package_content"):
- if pc.get("content-type") == "application/sonata.function_descriptor":
+ if pc.get(
+ "content-type") == "application/sonata.function_descriptor":
vnfd_path = os.path.join(
self.package_content_path,
make_relative_path(pc.get("name")))
vnfd = load_yaml(vnfd_path)
vnfd_set[vnfd.get("name")] = vnfd
# then link each vnf_id in the nsd to its vnfd
- for vnf_id in self.vnf_id2vnf_name:
+ for vnf_id in self.vnf_id2vnf_name:
vnf_name = self.vnf_id2vnf_name[vnf_id]
self.vnfds[vnf_id] = vnfd_set[vnf_name]
LOG.debug("Loaded VNFD: {0} id: {1}".format(vnf_name, vnf_id))
# create list of all SAPs
# check if we need to deploy management ports
if USE_DOCKER_MGMT:
- SAPs = [p for p in self.nsd["connection_points"] if 'management' not in p.get('type')]
+ SAPs = [p for p in self.nsd["connection_points"]
+ if 'management' not in p.get('type')]
else:
SAPs = [p for p in self.nsd["connection_points"]]
# make sure SAP has type set (default internal)
sap["type"] = sap.get("type", 'internal')
- # Each Service Access Point (connection_point) in the nsd is an IP address on the host
+ # Each Service Access Point (connection_point) in the nsd is an IP
+ # address on the host
if sap["type"] == "external":
# add to vnfds to calculate placement later on
sap_net = SAP_SUBNETS.pop(0)
- self.saps[sap_docker_name] = {"name": sap_docker_name , "type": "external", "net": sap_net}
+ self.saps[sap_docker_name] = {
+ "name": sap_docker_name, "type": "external", "net": sap_net}
# add SAP vnf to list in the NSD so it is deployed later on
- # each SAP gets a unique VNFD and vnf_id in the NSD and custom type (only defined in the dummygatekeeper)
+ # each SAP gets a unique VNFD and vnf_id in the NSD and custom
+ # type (only defined in the dummygatekeeper)
self.nsd["network_functions"].append(
{"vnf_id": sap_docker_name, "vnf_name": sap_docker_name, "vnf_type": "sap_ext"})
- # Each Service Access Point (connection_point) in the nsd is getting its own container (default)
+ # Each Service Access Point (connection_point) in the nsd is
+ # getting its own container (default)
elif sap["type"] == "internal" or sap["type"] == "management":
# add SAP to self.vnfds
if SAP_VNFD is None:
- sapfile = pkg_resources.resource_filename(__name__, "sap_vnfd.yml")
+ sapfile = pkg_resources.resource_filename(
+ __name__, "sap_vnfd.yml")
else:
sapfile = SAP_VNFD
sap_vnfd = load_yaml(sapfile)
self.nsd["network_functions"].append(
{"vnf_id": sap_docker_name, "vnf_name": sap_docker_name, "vnf_type": "sap_int"})
- LOG.debug("Loaded SAP: name: {0}, type: {1}".format(sap_docker_name, sap['type']))
+ LOG.debug("Loaded SAP: name: {0}, type: {1}".format(
+ sap_docker_name, sap['type']))
# create sap lists
- self.saps_ext = [self.saps[sap]['name'] for sap in self.saps if self.saps[sap]["type"] == "external"]
- self.saps_int = [self.saps[sap]['name'] for sap in self.saps if self.saps[sap]["type"] == "internal"]
+ self.saps_ext = [self.saps[sap]['name']
+ for sap in self.saps if self.saps[sap]["type"] == "external"]
+ self.saps_int = [self.saps[sap]['name']
+ for sap in self.saps if self.saps[sap]["type"] == "internal"]
def _start_sap(self, sap, instance_uuid):
if not DEPLOY_SAP:
return
- LOG.info('start SAP: {0} ,type: {1}'.format(sap['name'],sap['type']))
+ LOG.info('start SAP: {0} ,type: {1}'.format(sap['name'], sap['type']))
if sap["type"] == "internal":
vnfi = None
if not GK_STANDALONE_MODE:
for link in eline_fwd_links:
# check if we need to deploy this link when its a management link:
if USE_DOCKER_MGMT:
- if self.check_mgmt_interface(link["connection_points_reference"]):
+ if self.check_mgmt_interface(
+ link["connection_points_reference"]):
continue
- src_id, src_if_name, src_sap_id = parse_interface(link["connection_points_reference"][0])
- dst_id, dst_if_name, dst_sap_id = parse_interface(link["connection_points_reference"][1])
+ src_id, src_if_name, src_sap_id = parse_interface(
+ link["connection_points_reference"][0])
+ dst_id, dst_if_name, dst_sap_id = parse_interface(
+ link["connection_points_reference"][1])
setChaining = False
# check if there is a SAP in the link and chain everything together
if src_sap_id in self.saps and dst_sap_id in self.saps:
- LOG.info('2 SAPs cannot be chained together : {0} - {1}'.format(src_sap_id, dst_sap_id))
+ LOG.info(
+ '2 SAPs cannot be chained together : {0} - {1}'.format(src_sap_id, dst_sap_id))
continue
elif src_sap_id in self.saps_ext:
src_id = src_sap_id
- # set intf name to None so the chaining function will choose the first one
+ # set intf name to None so the chaining function will choose
+ # the first one
src_if_name = None
dst_vnfi = self._get_vnf_instance(instance_uuid, dst_id)
if dst_vnfi is not None:
# choose first ip address in sap subnet
sap_net = self.saps[src_sap_id]['net']
- sap_ip = "{0}/{1}".format(str(sap_net[2]), sap_net.prefixlen)
- self._vnf_reconfigure_network(dst_vnfi, dst_if_name, sap_ip)
+ sap_ip = "{0}/{1}".format(str(sap_net[2]),
+ sap_net.prefixlen)
+ self._vnf_reconfigure_network(
+ dst_vnfi, dst_if_name, sap_ip)
setChaining = True
elif dst_sap_id in self.saps_ext:
dst_id = dst_sap_id
- # set intf name to None so the chaining function will choose the first one
+ # set intf name to None so the chaining function will choose
+ # the first one
dst_if_name = None
src_vnfi = self._get_vnf_instance(instance_uuid, src_id)
if src_vnfi is not None:
sap_net = self.saps[dst_sap_id]['net']
- sap_ip = "{0}/{1}".format(str(sap_net[2]), sap_net.prefixlen)
- self._vnf_reconfigure_network(src_vnfi, src_if_name, sap_ip)
+ sap_ip = "{0}/{1}".format(str(sap_net[2]),
+ sap_net.prefixlen)
+ self._vnf_reconfigure_network(
+ src_vnfi, src_if_name, sap_ip)
setChaining = True
# Link between 2 VNFs
src_id = src_sap_id
if dst_sap_id in self.saps_int:
dst_id = dst_sap_id
- # re-configure the VNFs IP assignment and ensure that a new subnet is used for each E-Link
+ # re-configure the VNFs IP assignment and ensure that a new
+ # subnet is used for each E-Link
src_vnfi = self._get_vnf_instance(instance_uuid, src_id)
dst_vnfi = self._get_vnf_instance(instance_uuid, dst_id)
if src_vnfi is not None and dst_vnfi is not None:
eline_net = ELINE_SUBNETS.pop(0)
- ip1 = "{0}/{1}".format(str(eline_net[1]), eline_net.prefixlen)
- ip2 = "{0}/{1}".format(str(eline_net[2]), eline_net.prefixlen)
+ ip1 = "{0}/{1}".format(str(eline_net[1]),
+ eline_net.prefixlen)
+ ip2 = "{0}/{1}".format(str(eline_net[2]),
+ eline_net.prefixlen)
self._vnf_reconfigure_network(src_vnfi, src_if_name, ip1)
self._vnf_reconfigure_network(dst_vnfi, dst_if_name, ip2)
setChaining = True
# Set the chaining
if setChaining:
- ret = GK.net.setChain(
+ GK.net.setChain(
src_id, dst_id,
vnf_src_interface=src_if_name, vnf_dst_interface=dst_if_name,
bidirectional=BIDIRECTIONAL_CHAIN, cmd="add-flow", cookie=cookie, priority=10)
"Setting up E-Line link. (%s:%s) -> (%s:%s)" % (
src_id, src_if_name, dst_id, dst_if_name))
-
def _connect_elans(self, elan_fwd_links, instance_uuid):
"""
Connect all E-LAN links in the NSD
for link in elan_fwd_links:
# check if we need to deploy this link when its a management link:
if USE_DOCKER_MGMT:
- if self.check_mgmt_interface(link["connection_points_reference"]):
+ if self.check_mgmt_interface(
+ link["connection_points_reference"]):
continue
elan_vnf_list = []
- # check if an external SAP is in the E-LAN (then a subnet is already defined)
+ # check if an external SAP is in the E-LAN (then a subnet is
+ # already defined)
intfs_elan = [intf for intf in link["connection_points_reference"]]
lan_sap = self.check_ext_saps(intfs_elan)
if lan_sap:
lan_net = self.saps[lan_sap]['net']
lan_hosts = list(lan_net.hosts())
- sap_ip = str(lan_hosts.pop(0))
else:
lan_net = ELAN_SUBNETS.pop(0)
lan_hosts = list(lan_net.hosts())
for intf in link["connection_points_reference"]:
# skip external SAPs, they already have an ip
- vnf_id, vnf_interface, vnf_sap_docker_name = parse_interface(intf)
+ vnf_id, vnf_interface, vnf_sap_docker_name = parse_interface(
+ intf)
if vnf_sap_docker_name in self.saps_ext:
- elan_vnf_list.append({'name': vnf_sap_docker_name, 'interface': vnf_interface})
+ elan_vnf_list.append(
+ {'name': vnf_sap_docker_name, 'interface': vnf_interface})
continue
- ip_address = "{0}/{1}".format(str(lan_hosts.pop(0)), lan_net.prefixlen)
+ ip_address = "{0}/{1}".format(str(lan_hosts.pop(0)),
+ lan_net.prefixlen)
vnf_id, intf_name, vnf_sap_id = parse_interface(intf)
# make sure we use the correct sap vnf name
if vnfi is not None:
self._vnf_reconfigure_network(vnfi, intf_name, ip_address)
# add this vnf and interface to the E-LAN for tagging
- elan_vnf_list.append({'name': src_docker_name, 'interface': intf_name})
+ elan_vnf_list.append(
+ {'name': src_docker_name, 'interface': intf_name})
# install the VLAN tags for this E-LAN
GK.net.setLAN(elan_vnf_list)
-
def _load_docker_files(self):
"""
Get all paths to Dockerfiles from VNFDs and store them in dict.
Get all URLs to pre-build docker images in some repo.
:return:
"""
- # also merge sap dicts, because internal saps also need a docker container
+ # also merge sap dicts, because internal saps also need a docker
+ # container
all_vnfs = self.vnfds.copy()
all_vnfs.update(self.saps)
if url is not None:
url = url.replace("http://", "")
self.remote_docker_image_urls[k] = url
- LOG.debug("Found Docker image URL (%r): %r" % (k, self.remote_docker_image_urls[k]))
+ LOG.debug("Found Docker image URL (%r): %r" %
+ (k, self.remote_docker_image_urls[k]))
def _build_images_from_dockerfiles(self):
"""
if GK_STANDALONE_MODE:
return # do not build anything in standalone mode
dc = DockerClient()
- LOG.info("Building %d Docker images (this may take several minutes) ..." % len(self.local_docker_files))
+ LOG.info("Building %d Docker images (this may take several minutes) ..." % len(
+ self.local_docker_files))
for k, v in self.local_docker_files.iteritems():
- for line in dc.build(path=v.replace("Dockerfile", ""), tag=k, rm=False, nocache=False):
+ for line in dc.build(path=v.replace(
+ "Dockerfile", ""), tag=k, rm=False, nocache=False):
LOG.debug("DOCKER BUILD: %s" % line)
LOG.info("Docker image created: %s" % k)
"""
dc = DockerClient()
for url in self.remote_docker_image_urls.itervalues():
- if not FORCE_PULL: # only pull if not present (speedup for development)
+ # only pull if not present (speedup for development)
+ if not FORCE_PULL:
if len(dc.images.list(name=url)) > 0:
LOG.debug("Image %r present. Skipping pull." % url)
continue
# this seems to fail with latest docker api version 2.0.2
# dc.images.pull(url,
# insecure_registry=True)
- #using docker cli instead
+ # using docker cli instead
cmd = ["docker",
"pull",
url,
]
Popen(cmd).wait()
-
-
-
def _check_docker_image_exists(self, image_name):
"""
Query the docker service and check if the given image exists
sap_dict = self.saps[sap]
LOG.info("Placed SAP %r on DC %r" % (sap, str(sap_dict.get("dc"))))
-
def _calculate_cpu_cfs_values(self, cpu_time_percentage):
"""
Calculate cpu period and quota for CFS
# (see: https://www.kernel.org/doc/Documentation/scheduler/sched-bwc.txt)
# Attention minimum cpu_quota is 1ms (micro)
cpu_period = 1000000 # lets consider a fixed period of 1000000 microseconds for now
- LOG.debug("cpu_period is %r, cpu_percentage is %r" % (cpu_period, cpu_time_percentage))
- cpu_quota = cpu_period * cpu_time_percentage # calculate the fraction of cpu time for this container
- # ATTENTION >= 1000 to avoid a invalid argument system error ... no idea why
+ LOG.debug("cpu_period is %r, cpu_percentage is %r" %
+ (cpu_period, cpu_time_percentage))
+ # calculate the fraction of cpu time for this container
+ cpu_quota = cpu_period * cpu_time_percentage
+ # ATTENTION >= 1000 to avoid a invalid argument system error ... no
+ # idea why
if cpu_quota < 1000:
LOG.debug("cpu_quota before correcting: %r" % cpu_quota)
cpu_quota = 1000
LOG.warning("Increased CPU quota to avoid system error.")
- LOG.debug("Calculated: cpu_period=%f / cpu_quota=%f" % (cpu_period, cpu_quota))
+ LOG.debug("Calculated: cpu_period=%f / cpu_quota=%f" %
+ (cpu_period, cpu_quota))
return int(cpu_period), int(cpu_quota)
def check_ext_saps(self, intf_list):
# check if the list of interfacs contains an external SAP
- saps_ext = [self.saps[sap]['name'] for sap in self.saps if self.saps[sap]["type"] == "external"]
+ saps_ext = [self.saps[sap]['name']
+ for sap in self.saps if self.saps[sap]["type"] == "external"]
for intf_name in intf_list:
- vnf_id, vnf_interface, vnf_sap_docker_name = parse_interface(intf_name)
+ vnf_id, vnf_interface, vnf_sap_docker_name = parse_interface(
+ intf_name)
if vnf_sap_docker_name in saps_ext:
return vnf_sap_docker_name
def check_mgmt_interface(self, intf_list):
- SAPs_mgmt = [p.get('id') for p in self.nsd["connection_points"] if 'management' in p.get('type')]
+ SAPs_mgmt = [p.get('id') for p in self.nsd["connection_points"]
+ if 'management' in p.get('type')]
for intf_name in intf_list:
if intf_name in SAPs_mgmt:
return True
+
"""
Some (simple) placement algorithms
"""
"""
Placement: Always use one and the same data center from the GK.dcs dict.
"""
+
def place(self, nsd, vnfds, saps, dcs):
for id, vnfd in vnfds.iteritems():
vnfd["dc"] = list(dcs.itervalues())[0]
"""
Placement: Distribute VNFs across all available DCs in a round robin fashion.
"""
+
def place(self, nsd, vnfds, saps, dcs):
c = 0
dcs_list = list(dcs.itervalues())
vnfd["dc"] = dcs_list[c % len(dcs_list)]
c += 1 # inc. c to use next DC
+
class RoundRobinDcPlacementWithSAPs(object):
"""
Placement: Distribute VNFs across all available DCs in a round robin fashion,
every SAP is instantiated on the same DC as the connected VNF.
"""
+
def place(self, nsd, vnfds, saps, dcs):
# place vnfs
# place SAPs
vlinks = nsd.get("virtual_links", [])
- eline_fwd_links = [l for l in vlinks if (l["connectivity_type"] == "E-Line")]
- elan_fwd_links = [l for l in vlinks if (l["connectivity_type"] == "E-LAN")]
+ eline_fwd_links = [l for l in vlinks if (
+ l["connectivity_type"] == "E-Line")]
+ elan_fwd_links = [l for l in vlinks if (
+ l["connectivity_type"] == "E-LAN")]
- # SAPs on E-Line links are placed on the same DC as the VNF on the E-Line
+ # SAPs on E-Line links are placed on the same DC as the VNF on the
+ # E-Line
for link in eline_fwd_links:
- src_id, src_if_name, src_sap_id = parse_interface(link["connection_points_reference"][0])
- dst_id, dst_if_name, dst_sap_id = parse_interface(link["connection_points_reference"][1])
+ src_id, src_if_name, src_sap_id = parse_interface(
+ link["connection_points_reference"][0])
+ dst_id, dst_if_name, dst_sap_id = parse_interface(
+ link["connection_points_reference"][1])
# check if there is a SAP in the link
if src_sap_id in saps:
# find SAP interfaces
intf_id, intf_name, intf_sap_id = parse_interface(intf)
if intf_sap_id in saps:
- dc = dcs_list[randint(0, dc_len-1)]
+ dc = dcs_list[randint(0, dc_len - 1)]
saps[intf_sap_id]['dc'] = dc
-
"""
Resource definitions and API endpoints
"""
elif len(request.data) > 0:
son_file = request.data
else:
- return {"service_uuid": None, "size": 0, "sha1": None, "error": "upload failed. file not found."}, 500
+ return {"service_uuid": None, "size": 0, "sha1": None,
+ "error": "upload failed. file not found."}, 500
# generate a uuid to reference this package
service_uuid = str(uuid.uuid4())
file_hash = hashlib.sha1(str(son_file)).hexdigest()
if AUTO_DELETE:
service_list = copy.copy(GK.services)
for service_uuid in service_list:
- instances_list = copy.copy(GK.services[service_uuid].instances)
+ instances_list = copy.copy(
+ GK.services[service_uuid].instances)
for instance_uuid in instances_list:
# valid service and instance UUID, stop service
- GK.services.get(service_uuid).stop_service(instance_uuid)
- LOG.info("service instance with uuid %r stopped." % instance_uuid)
+ GK.services.get(service_uuid).stop_service(
+ instance_uuid)
+ LOG.info("service instance with uuid %r stopped." %
+ instance_uuid)
# create a service object and register it
s = Service(service_uuid, file_hash, upload_path)
if AUTO_DEPLOY:
# ok, we have a service uuid, lets start the service
reset_subnets()
- service_instance_uuid = GK.services.get(service_uuid).start_service()
+ GK.services.get(service_uuid).start_service()
# generate the JSON result
- return {"service_uuid": service_uuid, "size": size, "sha1": file_hash, "error": None}, 201
- except Exception as ex:
+ return {"service_uuid": service_uuid, "size": size,
+ "sha1": file_hash, "error": None}, 201
+ except BaseException:
LOG.exception("Service package upload failed:")
- return {"service_uuid": None, "size": 0, "sha1": None, "error": "upload failed"}, 500
+ return {"service_uuid": None, "size": 0,
+ "sha1": None, "error": "upload failed"}, 500
def get(self):
"""
service_uuid = json_data.get("service_uuid")
# lets be a bit fuzzy here to make testing easier
- if (service_uuid is None or service_uuid=="latest") and len(GK.services) > 0:
- # if we don't get a service uuid, we simple start the first service in the list
+ if (service_uuid is None or service_uuid ==
+ "latest") and len(GK.services) > 0:
+ # if we don't get a service uuid, we simple start the first service
+ # in the list
service_uuid = list(GK.services.iterkeys())[0]
if service_uuid in GK.services:
# ok, we have a service uuid, lets start the service
- service_instance_uuid = GK.services.get(service_uuid).start_service()
+ service_instance_uuid = GK.services.get(
+ service_uuid).start_service()
return {"service_instance_uuid": service_instance_uuid}, 201
return "Service not found", 404
# try to be fuzzy
if service_uuid is None and len(GK.services) > 0:
- #if we don't get a service uuid, we simply stop the last service in the list
+ # if we don't get a service uuid, we simply stop the last service
+ # in the list
service_uuid = list(GK.services.iterkeys())[0]
- if instance_uuid is None and len(GK.services[service_uuid].instances) > 0:
- instance_uuid = list(GK.services[service_uuid].instances.iterkeys())[0]
+ if instance_uuid is None and len(
+ GK.services[service_uuid].instances) > 0:
+ instance_uuid = list(
+ GK.services[service_uuid].instances.iterkeys())[0]
if service_uuid in GK.services and instance_uuid in GK.services[service_uuid].instances:
# valid service and instance UUID, stop service
GK.services.get(service_uuid).stop_service(instance_uuid)
- return "service instance with uuid %r stopped." % instance_uuid,200
+ return "service instance with uuid %r stopped." % instance_uuid, 200
return "Service not found", 404
+
class Exit(fr.Resource):
def put(self):
GK = Gatekeeper()
-
# create a single, global GK object
GK = None
initialize_GK()
api = fr.Api(app)
# define endpoints
api.add_resource(Packages, '/packages', '/api/v2/packages')
-api.add_resource(Instantiations, '/instantiations', '/api/v2/instantiations', '/api/v2/requests')
+api.add_resource(Instantiations, '/instantiations',
+ '/api/v2/instantiations', '/api/v2/requests')
api.add_resource(Exit, '/emulator/exit')
-
def start_rest_api(host, port, datacenters=dict()):
GK.dcs = datacenters
GK.net = get_dc_network()
try:
r = yaml.load(f)
except yaml.YAMLError as exc:
- LOG.exception("YAML parse error")
+ LOG.exception("YAML parse error: %r" % str(exc))
r = dict()
return r
return vnf_id, vnf_interface, vnf_sap_docker_name
+
def reset_subnets():
# private subnet definitions for the generated interfaces
# 10.10.xxx.0/24
global ELINE_SUBNETS
ELINE_SUBNETS = generate_subnets('10.30', 0, subnet_size=50, mask=30)
+
if __name__ == '__main__':
"""
Lets allow to run the API in standalone mode.
GK_STANDALONE_MODE = True
logging.getLogger("werkzeug").setLevel(logging.INFO)
start_rest_api("0.0.0.0", 8000)
-
projects / osm / vim-emu.git / blobdiff